/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-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-12 15:20:40,163 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-12 15:20:40,165 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-12 15:20:40,206 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-12 15:20:40,207 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-12 15:20:40,210 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-12 15:20:40,212 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-12 15:20:40,217 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-12 15:20:40,219 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-12 15:20:40,223 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-12 15:20:40,224 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-12 15:20:40,225 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-12 15:20:40,226 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-12 15:20:40,227 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-12 15:20:40,229 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-12 15:20:40,230 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-12 15:20:40,232 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-12 15:20:40,234 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-12 15:20:40,237 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-12 15:20:40,238 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-12 15:20:40,238 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-12 15:20:40,240 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-12 15:20:40,241 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-12 15:20:40,241 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-12 15:20:40,243 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-12 15:20:40,263 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-12 15:20:40,264 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-12 15:20:40,264 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-12 15:20:40,265 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 15:20:40,296 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-12 15:20:40,297 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-12 15:20:40,297 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-12 15:20:40,297 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-12 15:20:40,300 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-12 15:20:40,300 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-12 15:20:40,300 INFO L138 SettingsManager]: * Use SBE=true [2021-06-12 15:20:40,300 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-12 15:20:40,300 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-12 15:20:40,300 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-12 15:20:40,301 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-12 15:20:40,301 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-12 15:20:40,301 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-12 15:20:40,301 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-12 15:20:40,301 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-12 15:20:40,301 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-12 15:20:40,302 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-12 15:20:40,302 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-12 15:20:40,302 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-12 15:20:40,302 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-12 15:20:40,302 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-12 15:20:40,302 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-12 15:20:40,303 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-12 15:20:40,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-12 15:20:40,303 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-12 15:20:40,303 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-12 15:20:40,303 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-12 15:20:40,304 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-12 15:20:40,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-12 15:20:40,304 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-12 15:20:40,304 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-12 15:20:40,304 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-12 15:20:40,605 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-12 15:20:40,621 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-12 15:20:40,623 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-12 15:20:40,624 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-12 15:20:40,625 INFO L275 PluginConnector]: CDTParser initialized [2021-06-12 15:20:40,626 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack-1.i [2021-06-12 15:20:40,705 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7494c407/c8eec269ceb94bce89eb6923cbd3778b/FLAG8b4e5a7bc [2021-06-12 15:20:41,234 INFO L306 CDTParser]: Found 1 translation units. [2021-06-12 15:20:41,235 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-1.i [2021-06-12 15:20:41,254 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7494c407/c8eec269ceb94bce89eb6923cbd3778b/FLAG8b4e5a7bc [2021-06-12 15:20:41,526 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7494c407/c8eec269ceb94bce89eb6923cbd3778b [2021-06-12 15:20:41,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-12 15:20:41,530 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-12 15:20:41,531 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-12 15:20:41,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-12 15:20:41,534 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-12 15:20:41,535 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.06 03:20:41" (1/1) ... [2021-06-12 15:20:41,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64220484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:20:41, skipping insertion in model container [2021-06-12 15:20:41,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.06 03:20:41" (1/1) ... [2021-06-12 15:20:41,540 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-12 15:20:41,578 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-12 15:20:41,879 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-1.i[41520,41533] [2021-06-12 15:20:41,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-12 15:20:41,909 INFO L203 MainTranslator]: Completed pre-run [2021-06-12 15:20:41,934 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-1.i[41520,41533] [2021-06-12 15:20:41,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-12 15:20:42,072 INFO L208 MainTranslator]: Completed translation [2021-06-12 15:20:42,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:20:42 WrapperNode [2021-06-12 15:20:42,074 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-12 15:20:42,075 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-12 15:20:42,077 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-12 15:20:42,078 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-12 15:20:42,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:20:42" (1/1) ... [2021-06-12 15:20:42,115 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:20:42" (1/1) ... [2021-06-12 15:20:42,137 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-12 15:20:42,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-12 15:20:42,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-12 15:20:42,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-12 15:20:42,144 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:20:42" (1/1) ... [2021-06-12 15:20:42,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:20:42" (1/1) ... [2021-06-12 15:20:42,147 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:20:42" (1/1) ... [2021-06-12 15:20:42,148 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:20:42" (1/1) ... [2021-06-12 15:20:42,154 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:20:42" (1/1) ... [2021-06-12 15:20:42,157 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:20:42" (1/1) ... [2021-06-12 15:20:42,159 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:20:42" (1/1) ... [2021-06-12 15:20:42,162 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-12 15:20:42,162 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-12 15:20:42,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-12 15:20:42,162 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-12 15:20:42,163 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:20:42" (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 15:20:42,227 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-06-12 15:20:42,227 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-06-12 15:20:42,227 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-06-12 15:20:42,228 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-06-12 15:20:42,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-12 15:20:42,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-12 15:20:42,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-06-12 15:20:42,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-12 15:20:42,229 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-06-12 15:20:42,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-12 15:20:42,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-12 15:20:42,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-12 15:20:42,231 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 15:20:42,678 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-12 15:20:42,678 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2021-06-12 15:20:42,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 03:20:42 BoogieIcfgContainer [2021-06-12 15:20:42,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-12 15:20:42,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-12 15:20:42,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-12 15:20:42,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-12 15:20:42,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.06 03:20:41" (1/3) ... [2021-06-12 15:20:42,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77ff2f43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.06 03:20:42, skipping insertion in model container [2021-06-12 15:20:42,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:20:42" (2/3) ... [2021-06-12 15:20:42,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77ff2f43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.06 03:20:42, skipping insertion in model container [2021-06-12 15:20:42,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 03:20:42" (3/3) ... [2021-06-12 15:20:42,689 INFO L111 eAbstractionObserver]: Analyzing ICFG stack-1.i [2021-06-12 15:20:42,695 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-12 15:20:42,695 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-12 15:20:42,695 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-06-12 15:20:42,696 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-12 15:20:42,747 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,747 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,747 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,747 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,748 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,748 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,748 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,748 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,748 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,748 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,748 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,749 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,749 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,750 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,750 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,750 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,750 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,750 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,750 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,750 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,751 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,751 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,751 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,751 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,753 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,753 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,753 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,753 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,753 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,753 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,754 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,754 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,754 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,754 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,755 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,755 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,755 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,755 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,755 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,755 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,755 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,756 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,756 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,756 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,756 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,756 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,757 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,757 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,757 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,757 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,758 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,758 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,758 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,758 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,758 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,758 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,758 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,759 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,759 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,759 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,759 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,760 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,760 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,760 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,760 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,761 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,762 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,762 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,762 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,762 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,762 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,762 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,762 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,763 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,763 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,764 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,764 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,764 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,764 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,764 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,764 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,764 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,765 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,765 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,765 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,765 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,765 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,766 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,766 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,766 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,766 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,766 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,766 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,766 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,767 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,767 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,767 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,768 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,769 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,771 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,772 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,772 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,772 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,777 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,777 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,777 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,777 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,777 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,778 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,778 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,778 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,778 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,778 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,778 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,778 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,778 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,779 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,779 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,779 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,779 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,779 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,779 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,779 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,780 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,780 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,780 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,780 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,780 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,780 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,780 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,780 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,781 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,781 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,781 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,781 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,781 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,782 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,782 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,782 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,782 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,782 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,782 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,783 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,783 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,783 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,783 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,784 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,784 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,784 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,784 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,784 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,784 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,784 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,784 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,785 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,785 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,785 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,785 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,785 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,785 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,786 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,786 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,786 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,786 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,786 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,787 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,787 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,787 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,787 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,787 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,787 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,787 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,787 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,787 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,788 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,788 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,788 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,788 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,788 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,788 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,788 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,788 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,788 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,789 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,789 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,789 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,789 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,789 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,789 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,789 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,789 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,789 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,790 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,790 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,790 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,790 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,791 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,791 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,791 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,791 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,791 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,791 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,791 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,791 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,791 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,791 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,792 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,792 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,792 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,792 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,792 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,792 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,792 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,792 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,792 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,793 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,793 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,793 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,799 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,799 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,799 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,800 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,800 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,800 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,800 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,801 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,804 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,804 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,804 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,804 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,805 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,805 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,805 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,805 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,805 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,806 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,806 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,806 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,806 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,806 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,806 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,806 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,806 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,807 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,807 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,807 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,809 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,809 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,809 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,809 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,809 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,810 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,810 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,810 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,810 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,810 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,811 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,811 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,811 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,811 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,811 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,811 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,811 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,811 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,811 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,812 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,812 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,812 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,812 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,816 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,816 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,816 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,816 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,817 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,817 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,817 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,817 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,817 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,817 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,817 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,817 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,817 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,818 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,818 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,818 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,818 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,818 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:20:42,830 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-06-12 15:20:42,849 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-12 15:20:42,874 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-12 15:20:42,874 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-12 15:20:42,874 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-12 15:20:42,874 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-12 15:20:42,874 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-12 15:20:42,874 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-12 15:20:42,874 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-12 15:20:42,874 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == t1Thread1of1ForFork0======== [2021-06-12 15:20:42,887 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 149 places, 154 transitions, 330 flow [2021-06-12 15:20:43,274 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8468 states, 8464 states have (on average 2.8676748582230625) internal successors, (24272), 8467 states have internal predecessors, (24272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:20:43,313 INFO L276 IsEmpty]: Start isEmpty. Operand has 8468 states, 8464 states have (on average 2.8676748582230625) internal successors, (24272), 8467 states have internal predecessors, (24272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:20:43,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-06-12 15:20:43,350 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:20:43,354 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] [2021-06-12 15:20:43,354 INFO L430 AbstractCegarLoop]: === Iteration 1 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:20:43,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:20:43,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1276574419, now seen corresponding path program 1 times [2021-06-12 15:20:43,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:20:43,364 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055229274] [2021-06-12 15:20:43,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:20:43,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:20:43,631 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 15:20:43,631 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:20:43,631 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055229274] [2021-06-12 15:20:43,632 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055229274] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 15:20:43,632 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 15:20:43,632 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-12 15:20:43,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760822965] [2021-06-12 15:20:43,636 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-12 15:20:43,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:20:43,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-12 15:20:43,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 15:20:43,668 INFO L87 Difference]: Start difference. First operand has 8468 states, 8464 states have (on average 2.8676748582230625) internal successors, (24272), 8467 states have internal predecessors, (24272), 0 states have call successors, (0), 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 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:20:43,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:20:43,850 INFO L93 Difference]: Finished difference Result 11839 states and 32309 transitions. [2021-06-12 15:20:43,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-12 15:20:43,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2021-06-12 15:20:43,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:20:43,928 INFO L225 Difference]: With dead ends: 11839 [2021-06-12 15:20:43,928 INFO L226 Difference]: Without dead ends: 10552 [2021-06-12 15:20:43,930 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 15:20:44,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10552 states. [2021-06-12 15:20:44,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10552 to 10228. [2021-06-12 15:20:44,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10228 states, 10226 states have (on average 2.759241150009779) internal successors, (28216), 10227 states have internal predecessors, (28216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:20:44,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10228 states to 10228 states and 28216 transitions. [2021-06-12 15:20:44,446 INFO L78 Accepts]: Start accepts. Automaton has 10228 states and 28216 transitions. Word has length 58 [2021-06-12 15:20:44,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:20:44,447 INFO L482 AbstractCegarLoop]: Abstraction has 10228 states and 28216 transitions. [2021-06-12 15:20:44,448 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:20:44,448 INFO L276 IsEmpty]: Start isEmpty. Operand 10228 states and 28216 transitions. [2021-06-12 15:20:44,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-06-12 15:20:44,535 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:20:44,535 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:20:44,535 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-12 15:20:44,536 INFO L430 AbstractCegarLoop]: === Iteration 2 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:20:44,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:20:44,536 INFO L82 PathProgramCache]: Analyzing trace with hash 503754833, now seen corresponding path program 1 times [2021-06-12 15:20:44,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:20:44,536 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718234167] [2021-06-12 15:20:44,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:20:44,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:20:44,654 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 15:20:44,654 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:20:44,654 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718234167] [2021-06-12 15:20:44,654 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718234167] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 15:20:44,654 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 15:20:44,654 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-12 15:20:44,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404188574] [2021-06-12 15:20:44,655 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-12 15:20:44,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:20:44,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-12 15:20:44,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-12 15:20:44,656 INFO L87 Difference]: Start difference. First operand 10228 states and 28216 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:20:44,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:20:44,861 INFO L93 Difference]: Finished difference Result 15016 states and 41364 transitions. [2021-06-12 15:20:44,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-12 15:20:44,862 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2021-06-12 15:20:44,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:20:44,933 INFO L225 Difference]: With dead ends: 15016 [2021-06-12 15:20:44,933 INFO L226 Difference]: Without dead ends: 15016 [2021-06-12 15:20:44,934 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-12 15:20:45,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15016 states. [2021-06-12 15:20:45,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15016 to 10984. [2021-06-12 15:20:45,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10984 states, 10982 states have (on average 2.7583318156984156) internal successors, (30292), 10983 states have internal predecessors, (30292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:20:45,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10984 states to 10984 states and 30292 transitions. [2021-06-12 15:20:45,355 INFO L78 Accepts]: Start accepts. Automaton has 10984 states and 30292 transitions. Word has length 67 [2021-06-12 15:20:45,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:20:45,356 INFO L482 AbstractCegarLoop]: Abstraction has 10984 states and 30292 transitions. [2021-06-12 15:20:45,356 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:20:45,356 INFO L276 IsEmpty]: Start isEmpty. Operand 10984 states and 30292 transitions. [2021-06-12 15:20:45,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-06-12 15:20:45,369 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:20:45,370 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] [2021-06-12 15:20:45,370 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-12 15:20:45,370 INFO L430 AbstractCegarLoop]: === Iteration 3 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:20:45,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:20:45,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1242964654, now seen corresponding path program 1 times [2021-06-12 15:20:45,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:20:45,378 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954322067] [2021-06-12 15:20:45,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:20:45,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:20:45,497 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 15:20:45,498 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:20:45,498 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954322067] [2021-06-12 15:20:45,498 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954322067] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:20:45,498 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38450252] [2021-06-12 15:20:45,498 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 15:20:45,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:20:45,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 4 conjunts are in the unsatisfiable core [2021-06-12 15:20:45,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:20:45,993 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 15:20:45,994 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38450252] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:20:45,994 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:20:45,994 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-06-12 15:20:45,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390229903] [2021-06-12 15:20:45,995 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 15:20:45,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:20:45,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 15:20:45,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-12 15:20:45,996 INFO L87 Difference]: Start difference. First operand 10984 states and 30292 transitions. Second operand has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:20:46,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:20:46,235 INFO L93 Difference]: Finished difference Result 18559 states and 50925 transitions. [2021-06-12 15:20:46,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-12 15:20:46,236 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 0 states have call successors, (0), 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 92 [2021-06-12 15:20:46,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:20:46,293 INFO L225 Difference]: With dead ends: 18559 [2021-06-12 15:20:46,293 INFO L226 Difference]: Without dead ends: 18559 [2021-06-12 15:20:46,293 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 87.1ms TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2021-06-12 15:20:46,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18559 states. [2021-06-12 15:20:46,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18559 to 14608. [2021-06-12 15:20:46,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14608 states, 14606 states have (on average 2.7526359030535397) internal successors, (40205), 14607 states have internal predecessors, (40205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:20:46,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14608 states to 14608 states and 40205 transitions. [2021-06-12 15:20:46,833 INFO L78 Accepts]: Start accepts. Automaton has 14608 states and 40205 transitions. Word has length 92 [2021-06-12 15:20:46,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:20:46,834 INFO L482 AbstractCegarLoop]: Abstraction has 14608 states and 40205 transitions. [2021-06-12 15:20:46,834 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:20:46,834 INFO L276 IsEmpty]: Start isEmpty. Operand 14608 states and 40205 transitions. [2021-06-12 15:20:46,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-06-12 15:20:46,855 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:20:46,856 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] [2021-06-12 15:20:47,069 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-06-12 15:20:47,069 INFO L430 AbstractCegarLoop]: === Iteration 4 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:20:47,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:20:47,069 INFO L82 PathProgramCache]: Analyzing trace with hash 838616789, now seen corresponding path program 1 times [2021-06-12 15:20:47,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:20:47,070 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029582090] [2021-06-12 15:20:47,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:20:47,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:20:47,136 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-06-12 15:20:47,136 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:20:47,137 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029582090] [2021-06-12 15:20:47,137 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029582090] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 15:20:47,137 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 15:20:47,137 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-12 15:20:47,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138362511] [2021-06-12 15:20:47,137 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-12 15:20:47,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:20:47,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-12 15:20:47,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 15:20:47,138 INFO L87 Difference]: Start difference. First operand 14608 states and 40205 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:20:47,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:20:47,172 INFO L93 Difference]: Finished difference Result 6200 states and 15967 transitions. [2021-06-12 15:20:47,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-12 15:20:47,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 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 113 [2021-06-12 15:20:47,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:20:47,186 INFO L225 Difference]: With dead ends: 6200 [2021-06-12 15:20:47,186 INFO L226 Difference]: Without dead ends: 6080 [2021-06-12 15:20:47,186 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 15:20:47,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6080 states. [2021-06-12 15:20:47,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6080 to 5880. [2021-06-12 15:20:47,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5880 states, 5878 states have (on average 2.5707723715549506) internal successors, (15111), 5879 states have internal predecessors, (15111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:20:47,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5880 states to 5880 states and 15111 transitions. [2021-06-12 15:20:47,303 INFO L78 Accepts]: Start accepts. Automaton has 5880 states and 15111 transitions. Word has length 113 [2021-06-12 15:20:47,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:20:47,304 INFO L482 AbstractCegarLoop]: Abstraction has 5880 states and 15111 transitions. [2021-06-12 15:20:47,304 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:20:47,304 INFO L276 IsEmpty]: Start isEmpty. Operand 5880 states and 15111 transitions. [2021-06-12 15:20:47,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-06-12 15:20:47,329 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:20:47,330 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] [2021-06-12 15:20:47,330 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-12 15:20:47,330 INFO L430 AbstractCegarLoop]: === Iteration 5 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:20:47,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:20:47,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1978965999, now seen corresponding path program 2 times [2021-06-12 15:20:47,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:20:47,330 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956387959] [2021-06-12 15:20:47,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:20:47,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:20:47,551 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 15:20:47,551 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:20:47,552 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956387959] [2021-06-12 15:20:47,552 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956387959] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:20:47,552 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752537497] [2021-06-12 15:20:47,552 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 15:20:47,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-12 15:20:47,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:20:47,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 6 conjunts are in the unsatisfiable core [2021-06-12 15:20:47,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:20:47,918 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 15:20:47,919 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752537497] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:20:47,919 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:20:47,919 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-06-12 15:20:47,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375433112] [2021-06-12 15:20:47,920 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 15:20:47,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:20:47,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 15:20:47,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-06-12 15:20:47,920 INFO L87 Difference]: Start difference. First operand 5880 states and 15111 transitions. Second operand has 9 states, 9 states have (on average 19.666666666666668) internal successors, (177), 9 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:20:48,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:20:48,049 INFO L93 Difference]: Finished difference Result 9599 states and 24729 transitions. [2021-06-12 15:20:48,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-12 15:20:48,049 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 19.666666666666668) internal successors, (177), 9 states have internal predecessors, (177), 0 states have call successors, (0), 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 126 [2021-06-12 15:20:48,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:20:48,071 INFO L225 Difference]: With dead ends: 9599 [2021-06-12 15:20:48,071 INFO L226 Difference]: Without dead ends: 9599 [2021-06-12 15:20:48,072 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 132.6ms TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2021-06-12 15:20:48,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9599 states. [2021-06-12 15:20:48,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9599 to 7682. [2021-06-12 15:20:48,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7682 states, 7680 states have (on average 2.5678385416666667) internal successors, (19721), 7681 states have internal predecessors, (19721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:20:48,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7682 states to 7682 states and 19721 transitions. [2021-06-12 15:20:48,277 INFO L78 Accepts]: Start accepts. Automaton has 7682 states and 19721 transitions. Word has length 126 [2021-06-12 15:20:48,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:20:48,277 INFO L482 AbstractCegarLoop]: Abstraction has 7682 states and 19721 transitions. [2021-06-12 15:20:48,277 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 19.666666666666668) internal successors, (177), 9 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:20:48,277 INFO L276 IsEmpty]: Start isEmpty. Operand 7682 states and 19721 transitions. [2021-06-12 15:20:48,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-06-12 15:20:48,289 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:20:48,290 INFO L472 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:20:48,492 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:20:48,493 INFO L430 AbstractCegarLoop]: === Iteration 6 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:20:48,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:20:48,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1435373191, now seen corresponding path program 1 times [2021-06-12 15:20:48,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:20:48,494 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496196694] [2021-06-12 15:20:48,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:20:48,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:20:48,588 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 15:20:48,588 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:20:48,588 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496196694] [2021-06-12 15:20:48,588 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496196694] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:20:48,589 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621668574] [2021-06-12 15:20:48,589 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 15:20:48,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:20:48,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 6 conjunts are in the unsatisfiable core [2021-06-12 15:20:48,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:20:48,920 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-06-12 15:20:48,920 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621668574] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 15:20:48,920 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-06-12 15:20:48,920 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 8 [2021-06-12 15:20:48,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266830071] [2021-06-12 15:20:48,921 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-12 15:20:48,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:20:48,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-12 15:20:48,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-06-12 15:20:48,921 INFO L87 Difference]: Start difference. First operand 7682 states and 19721 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:20:49,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:20:49,043 INFO L93 Difference]: Finished difference Result 10337 states and 26617 transitions. [2021-06-12 15:20:49,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-12 15:20:49,043 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 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 127 [2021-06-12 15:20:49,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:20:49,065 INFO L225 Difference]: With dead ends: 10337 [2021-06-12 15:20:49,065 INFO L226 Difference]: Without dead ends: 10337 [2021-06-12 15:20:49,066 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 51.7ms TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-06-12 15:20:49,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10337 states. [2021-06-12 15:20:49,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10337 to 8942. [2021-06-12 15:20:49,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8942 states, 8940 states have (on average 2.5917225950783) internal successors, (23170), 8941 states have internal predecessors, (23170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:20:49,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8942 states to 8942 states and 23170 transitions. [2021-06-12 15:20:49,351 INFO L78 Accepts]: Start accepts. Automaton has 8942 states and 23170 transitions. Word has length 127 [2021-06-12 15:20:49,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:20:49,351 INFO L482 AbstractCegarLoop]: Abstraction has 8942 states and 23170 transitions. [2021-06-12 15:20:49,351 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:20:49,351 INFO L276 IsEmpty]: Start isEmpty. Operand 8942 states and 23170 transitions. [2021-06-12 15:20:49,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-06-12 15:20:49,369 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:20:49,369 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] [2021-06-12 15:20:49,593 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:20:49,593 INFO L430 AbstractCegarLoop]: === Iteration 7 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:20:49,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:20:49,594 INFO L82 PathProgramCache]: Analyzing trace with hash 486313200, now seen corresponding path program 3 times [2021-06-12 15:20:49,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:20:49,594 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579445791] [2021-06-12 15:20:49,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:20:49,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:20:49,726 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 15:20:49,726 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:20:49,726 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579445791] [2021-06-12 15:20:49,726 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579445791] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:20:49,727 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774883661] [2021-06-12 15:20:49,727 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 15:20:49,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-12 15:20:49,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:20:49,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-12 15:20:49,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:20:50,189 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 15:20:50,189 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774883661] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:20:50,189 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:20:50,190 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-06-12 15:20:50,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021306135] [2021-06-12 15:20:50,190 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-12 15:20:50,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:20:50,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-12 15:20:50,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-06-12 15:20:50,191 INFO L87 Difference]: Start difference. First operand 8942 states and 23170 transitions. Second operand has 11 states, 11 states have (on average 19.181818181818183) internal successors, (211), 11 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:20:50,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:20:50,384 INFO L93 Difference]: Finished difference Result 13941 states and 35975 transitions. [2021-06-12 15:20:50,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-12 15:20:50,385 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 19.181818181818183) internal successors, (211), 11 states have internal predecessors, (211), 0 states have call successors, (0), 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 160 [2021-06-12 15:20:50,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:20:50,413 INFO L225 Difference]: With dead ends: 13941 [2021-06-12 15:20:50,413 INFO L226 Difference]: Without dead ends: 13941 [2021-06-12 15:20:50,414 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 109.7ms TimeCoverageRelationStatistics Valid=121, Invalid=221, Unknown=0, NotChecked=0, Total=342 [2021-06-12 15:20:50,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13941 states. [2021-06-12 15:20:50,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13941 to 10744. [2021-06-12 15:20:50,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10744 states, 10742 states have (on average 2.586110593930367) internal successors, (27780), 10743 states have internal predecessors, (27780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:20:50,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10744 states to 10744 states and 27780 transitions. [2021-06-12 15:20:50,714 INFO L78 Accepts]: Start accepts. Automaton has 10744 states and 27780 transitions. Word has length 160 [2021-06-12 15:20:50,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:20:50,714 INFO L482 AbstractCegarLoop]: Abstraction has 10744 states and 27780 transitions. [2021-06-12 15:20:50,714 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 19.181818181818183) internal successors, (211), 11 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:20:50,715 INFO L276 IsEmpty]: Start isEmpty. Operand 10744 states and 27780 transitions. [2021-06-12 15:20:50,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-06-12 15:20:50,733 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:20:50,733 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, 1, 1, 1, 1] [2021-06-12 15:20:50,956 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:20:50,957 INFO L430 AbstractCegarLoop]: === Iteration 8 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:20:50,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:20:50,957 INFO L82 PathProgramCache]: Analyzing trace with hash 306371224, now seen corresponding path program 2 times [2021-06-12 15:20:50,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:20:50,957 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516020900] [2021-06-12 15:20:50,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:20:50,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:20:51,080 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 6 proven. 47 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-06-12 15:20:51,081 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:20:51,081 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516020900] [2021-06-12 15:20:51,081 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516020900] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:20:51,081 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159175347] [2021-06-12 15:20:51,081 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 15:20:51,216 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-12 15:20:51,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:20:51,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-12 15:20:51,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:20:51,544 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 6 proven. 47 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-06-12 15:20:51,545 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159175347] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:20:51,545 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:20:51,545 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-06-12 15:20:51,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854575566] [2021-06-12 15:20:51,546 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 15:20:51,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:20:51,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 15:20:51,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-06-12 15:20:51,556 INFO L87 Difference]: Start difference. First operand 10744 states and 27780 transitions. Second operand has 10 states, 10 states have (on average 20.6) internal successors, (206), 10 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:20:51,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:20:51,820 INFO L93 Difference]: Finished difference Result 15879 states and 41004 transitions. [2021-06-12 15:20:51,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-12 15:20:51,820 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 20.6) internal successors, (206), 10 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2021-06-12 15:20:51,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:20:51,849 INFO L225 Difference]: With dead ends: 15879 [2021-06-12 15:20:51,849 INFO L226 Difference]: Without dead ends: 15879 [2021-06-12 15:20:51,849 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 102.1ms TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-06-12 15:20:51,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15879 states. [2021-06-12 15:20:52,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15879 to 12004. [2021-06-12 15:20:52,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12004 states, 12002 states have (on average 2.601983002832861) internal successors, (31229), 12003 states have internal predecessors, (31229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:20:52,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12004 states to 12004 states and 31229 transitions. [2021-06-12 15:20:52,145 INFO L78 Accepts]: Start accepts. Automaton has 12004 states and 31229 transitions. Word has length 161 [2021-06-12 15:20:52,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:20:52,145 INFO L482 AbstractCegarLoop]: Abstraction has 12004 states and 31229 transitions. [2021-06-12 15:20:52,145 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 20.6) internal successors, (206), 10 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:20:52,145 INFO L276 IsEmpty]: Start isEmpty. Operand 12004 states and 31229 transitions. [2021-06-12 15:20:52,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-06-12 15:20:52,167 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:20:52,167 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] [2021-06-12 15:20:52,389 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:20:52,389 INFO L430 AbstractCegarLoop]: === Iteration 9 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:20:52,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:20:52,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1386346929, now seen corresponding path program 4 times [2021-06-12 15:20:52,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:20:52,390 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138544120] [2021-06-12 15:20:52,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:20:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:20:52,528 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 15:20:52,528 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:20:52,528 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138544120] [2021-06-12 15:20:52,528 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138544120] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:20:52,528 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3046562] [2021-06-12 15:20:52,529 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 15:20:52,650 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-12 15:20:52,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:20:52,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-12 15:20:52,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:20:52,976 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 15:20:52,976 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3046562] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:20:52,976 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:20:52,976 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-06-12 15:20:52,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257049368] [2021-06-12 15:20:52,977 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-12 15:20:52,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:20:52,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-12 15:20:52,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-06-12 15:20:52,978 INFO L87 Difference]: Start difference. First operand 12004 states and 31229 transitions. Second operand has 13 states, 13 states have (on average 18.846153846153847) internal successors, (245), 13 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:20:53,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:20:53,236 INFO L93 Difference]: Finished difference Result 17203 states and 44584 transitions. [2021-06-12 15:20:53,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-12 15:20:53,237 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 18.846153846153847) internal successors, (245), 13 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 194 [2021-06-12 15:20:53,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:20:53,263 INFO L225 Difference]: With dead ends: 17203 [2021-06-12 15:20:53,263 INFO L226 Difference]: Without dead ends: 17203 [2021-06-12 15:20:53,264 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 151.7ms TimeCoverageRelationStatistics Valid=176, Invalid=330, Unknown=0, NotChecked=0, Total=506 [2021-06-12 15:20:53,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17203 states. [2021-06-12 15:20:53,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17203 to 13806. [2021-06-12 15:20:53,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13806 states, 13804 states have (on average 2.5962764416111273) internal successors, (35839), 13805 states have internal predecessors, (35839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:20:53,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13806 states to 13806 states and 35839 transitions. [2021-06-12 15:20:53,577 INFO L78 Accepts]: Start accepts. Automaton has 13806 states and 35839 transitions. Word has length 194 [2021-06-12 15:20:53,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:20:53,578 INFO L482 AbstractCegarLoop]: Abstraction has 13806 states and 35839 transitions. [2021-06-12 15:20:53,578 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 18.846153846153847) internal successors, (245), 13 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:20:53,578 INFO L276 IsEmpty]: Start isEmpty. Operand 13806 states and 35839 transitions. [2021-06-12 15:20:53,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-06-12 15:20:53,603 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:20:53,604 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, 1, 1, 1, 1] [2021-06-12 15:20:53,826 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:20:53,827 INFO L430 AbstractCegarLoop]: === Iteration 10 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:20:53,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:20:53,827 INFO L82 PathProgramCache]: Analyzing trace with hash 2097030715, now seen corresponding path program 3 times [2021-06-12 15:20:53,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:20:53,827 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83838676] [2021-06-12 15:20:53,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:20:53,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:20:53,954 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 9 proven. 139 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-06-12 15:20:53,955 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:20:53,955 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83838676] [2021-06-12 15:20:53,955 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83838676] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:20:53,955 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286601203] [2021-06-12 15:20:53,955 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 15:20:54,131 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-12 15:20:54,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:20:54,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-12 15:20:54,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:20:54,546 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 9 proven. 115 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-06-12 15:20:54,546 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286601203] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:20:54,546 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:20:54,546 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 10 [2021-06-12 15:20:54,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690729244] [2021-06-12 15:20:54,548 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 15:20:54,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:20:54,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 15:20:54,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-06-12 15:20:54,549 INFO L87 Difference]: Start difference. First operand 13806 states and 35839 transitions. Second operand has 10 states, 10 states have (on average 22.4) internal successors, (224), 10 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:20:54,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:20:54,726 INFO L93 Difference]: Finished difference Result 17791 states and 46057 transitions. [2021-06-12 15:20:54,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-12 15:20:54,727 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 22.4) internal successors, (224), 10 states have internal predecessors, (224), 0 states have call successors, (0), 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 195 [2021-06-12 15:20:54,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:20:54,755 INFO L225 Difference]: With dead ends: 17791 [2021-06-12 15:20:54,755 INFO L226 Difference]: Without dead ends: 17791 [2021-06-12 15:20:54,755 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 87.6ms TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-06-12 15:20:54,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17791 states. [2021-06-12 15:20:54,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17791 to 13806. [2021-06-12 15:20:54,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13806 states, 13804 states have (on average 2.5962764416111273) internal successors, (35839), 13805 states have internal predecessors, (35839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:20:55,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13806 states to 13806 states and 35839 transitions. [2021-06-12 15:20:55,018 INFO L78 Accepts]: Start accepts. Automaton has 13806 states and 35839 transitions. Word has length 195 [2021-06-12 15:20:55,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:20:55,019 INFO L482 AbstractCegarLoop]: Abstraction has 13806 states and 35839 transitions. [2021-06-12 15:20:55,019 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 22.4) internal successors, (224), 10 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:20:55,019 INFO L276 IsEmpty]: Start isEmpty. Operand 13806 states and 35839 transitions. [2021-06-12 15:20:55,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-06-12 15:20:55,039 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:20:55,039 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, 1, 1, 1, 1] [2021-06-12 15:20:55,252 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-06-12 15:20:55,253 INFO L430 AbstractCegarLoop]: === Iteration 11 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:20:55,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:20:55,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1087945719, now seen corresponding path program 4 times [2021-06-12 15:20:55,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:20:55,253 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635557443] [2021-06-12 15:20:55,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:20:55,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:20:55,393 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 9 proven. 130 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-06-12 15:20:55,393 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:20:55,393 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635557443] [2021-06-12 15:20:55,393 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635557443] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:20:55,393 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144249440] [2021-06-12 15:20:55,394 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 15:20:55,520 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-12 15:20:55,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:20:55,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-12 15:20:55,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:20:55,820 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 9 proven. 130 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-06-12 15:20:55,820 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144249440] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:20:55,820 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:20:55,820 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-06-12 15:20:55,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027831163] [2021-06-12 15:20:55,822 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-12 15:20:55,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:20:55,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-12 15:20:55,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-06-12 15:20:55,822 INFO L87 Difference]: Start difference. First operand 13806 states and 35839 transitions. Second operand has 12 states, 12 states have (on average 20.0) internal successors, (240), 12 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:20:56,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:20:56,119 INFO L93 Difference]: Finished difference Result 19141 states and 49613 transitions. [2021-06-12 15:20:56,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-12 15:20:56,120 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 20.0) internal successors, (240), 12 states have internal predecessors, (240), 0 states have call successors, (0), 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 195 [2021-06-12 15:20:56,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:20:56,139 INFO L225 Difference]: With dead ends: 19141 [2021-06-12 15:20:56,139 INFO L226 Difference]: Without dead ends: 19141 [2021-06-12 15:20:56,139 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 136.3ms TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2021-06-12 15:20:56,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19141 states. [2021-06-12 15:20:56,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19141 to 13806. [2021-06-12 15:20:56,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13806 states, 13804 states have (on average 2.5962764416111273) internal successors, (35839), 13805 states have internal predecessors, (35839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:20:56,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13806 states to 13806 states and 35839 transitions. [2021-06-12 15:20:56,423 INFO L78 Accepts]: Start accepts. Automaton has 13806 states and 35839 transitions. Word has length 195 [2021-06-12 15:20:56,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:20:56,424 INFO L482 AbstractCegarLoop]: Abstraction has 13806 states and 35839 transitions. [2021-06-12 15:20:56,424 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 20.0) internal successors, (240), 12 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:20:56,424 INFO L276 IsEmpty]: Start isEmpty. Operand 13806 states and 35839 transitions. [2021-06-12 15:20:56,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-06-12 15:20:56,445 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:20:56,445 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, 1, 1, 1, 1] [2021-06-12 15:20:56,665 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-06-12 15:20:56,666 INFO L430 AbstractCegarLoop]: === Iteration 12 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:20:56,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:20:56,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1898958203, now seen corresponding path program 1 times [2021-06-12 15:20:56,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:20:56,666 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82254058] [2021-06-12 15:20:56,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:20:56,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:20:56,794 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 15:20:56,795 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:20:56,795 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82254058] [2021-06-12 15:20:56,795 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82254058] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:20:56,795 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651410478] [2021-06-12 15:20:56,795 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 15:20:56,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:20:56,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-12 15:20:56,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:20:57,258 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 9 proven. 123 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-06-12 15:20:57,258 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651410478] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:20:57,258 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:20:57,258 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 11 [2021-06-12 15:20:57,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601513360] [2021-06-12 15:20:57,259 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-12 15:20:57,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:20:57,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-12 15:20:57,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-06-12 15:20:57,260 INFO L87 Difference]: Start difference. First operand 13806 states and 35839 transitions. Second operand has 11 states, 11 states have (on average 21.454545454545453) internal successors, (236), 11 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:20:57,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:20:57,483 INFO L93 Difference]: Finished difference Result 25001 states and 64922 transitions. [2021-06-12 15:20:57,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-12 15:20:57,483 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 21.454545454545453) internal successors, (236), 11 states have internal predecessors, (236), 0 states have call successors, (0), 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 15:20:57,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:20:57,514 INFO L225 Difference]: With dead ends: 25001 [2021-06-12 15:20:57,514 INFO L226 Difference]: Without dead ends: 25001 [2021-06-12 15:20:57,514 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 116.3ms TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2021-06-12 15:20:57,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25001 states. [2021-06-12 15:20:57,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25001 to 14966. [2021-06-12 15:20:57,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14966 states, 14964 states have (on average 2.605787222667736) internal successors, (38993), 14965 states have internal predecessors, (38993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:20:57,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14966 states to 14966 states and 38993 transitions. [2021-06-12 15:20:57,799 INFO L78 Accepts]: Start accepts. Automaton has 14966 states and 38993 transitions. Word has length 224 [2021-06-12 15:20:57,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:20:57,799 INFO L482 AbstractCegarLoop]: Abstraction has 14966 states and 38993 transitions. [2021-06-12 15:20:57,799 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 21.454545454545453) internal successors, (236), 11 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:20:57,799 INFO L276 IsEmpty]: Start isEmpty. Operand 14966 states and 38993 transitions. [2021-06-12 15:20:57,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-06-12 15:20:57,820 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:20:57,821 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] [2021-06-12 15:20:58,045 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:20:58,045 INFO L430 AbstractCegarLoop]: === Iteration 13 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:20:58,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:20:58,045 INFO L82 PathProgramCache]: Analyzing trace with hash -648743374, now seen corresponding path program 5 times [2021-06-12 15:20:58,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:20:58,045 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020351457] [2021-06-12 15:20:58,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:20:58,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:20:58,190 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 297 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:20:58,190 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:20:58,190 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020351457] [2021-06-12 15:20:58,190 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020351457] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:20:58,190 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851500546] [2021-06-12 15:20:58,191 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 15:20:58,388 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-06-12 15:20:58,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:20:58,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-12 15:20:58,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:20:58,732 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 430 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:20:58,732 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851500546] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 15:20:58,732 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-06-12 15:20:58,732 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 15 [2021-06-12 15:20:58,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915609334] [2021-06-12 15:20:58,734 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-12 15:20:58,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:20:58,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-12 15:20:58,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-06-12 15:20:58,734 INFO L87 Difference]: Start difference. First operand 14966 states and 38993 transitions. Second operand has 13 states, 13 states have (on average 17.53846153846154) internal successors, (228), 13 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:20:59,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:20:59,034 INFO L93 Difference]: Finished difference Result 39019 states and 101754 transitions. [2021-06-12 15:20:59,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-12 15:20:59,035 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 17.53846153846154) internal successors, (228), 13 states have internal predecessors, (228), 0 states have call successors, (0), 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 228 [2021-06-12 15:20:59,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:20:59,049 INFO L225 Difference]: With dead ends: 39019 [2021-06-12 15:20:59,049 INFO L226 Difference]: Without dead ends: 11420 [2021-06-12 15:20:59,049 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 165.1ms TimeCoverageRelationStatistics Valid=184, Invalid=416, Unknown=0, NotChecked=0, Total=600 [2021-06-12 15:20:59,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11420 states. [2021-06-12 15:20:59,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11420 to 11420. [2021-06-12 15:20:59,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11420 states, 11418 states have (on average 2.546242774566474) internal successors, (29073), 11419 states have internal predecessors, (29073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:20:59,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11420 states to 11420 states and 29073 transitions. [2021-06-12 15:20:59,210 INFO L78 Accepts]: Start accepts. Automaton has 11420 states and 29073 transitions. Word has length 228 [2021-06-12 15:20:59,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:20:59,211 INFO L482 AbstractCegarLoop]: Abstraction has 11420 states and 29073 transitions. [2021-06-12 15:20:59,211 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 17.53846153846154) internal successors, (228), 13 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:20:59,211 INFO L276 IsEmpty]: Start isEmpty. Operand 11420 states and 29073 transitions. [2021-06-12 15:20:59,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-06-12 15:20:59,223 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:20:59,224 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, 1, 1, 1, 1] [2021-06-12 15:20:59,436 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:20:59,437 INFO L430 AbstractCegarLoop]: === Iteration 14 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:20:59,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:20:59,437 INFO L82 PathProgramCache]: Analyzing trace with hash 511541308, now seen corresponding path program 5 times [2021-06-12 15:20:59,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:20:59,437 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813334139] [2021-06-12 15:20:59,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:20:59,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:20:59,562 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 12 proven. 256 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-06-12 15:20:59,563 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:20:59,563 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813334139] [2021-06-12 15:20:59,563 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813334139] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:20:59,563 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044534899] [2021-06-12 15:20:59,563 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 15:20:59,823 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-12 15:20:59,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:20:59,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-12 15:20:59,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:21:00,211 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 12 proven. 232 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-06-12 15:21:00,211 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044534899] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:21:00,212 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:21:00,212 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 12 [2021-06-12 15:21:00,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64102027] [2021-06-12 15:21:00,213 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-12 15:21:00,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:21:00,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-12 15:21:00,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-06-12 15:21:00,214 INFO L87 Difference]: Start difference. First operand 11420 states and 29073 transitions. Second operand has 12 states, 12 states have (on average 21.5) internal successors, (258), 12 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:21:00,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:21:00,440 INFO L93 Difference]: Finished difference Result 14630 states and 37308 transitions. [2021-06-12 15:21:00,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-12 15:21:00,440 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 21.5) internal successors, (258), 12 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 229 [2021-06-12 15:21:00,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:21:00,457 INFO L225 Difference]: With dead ends: 14630 [2021-06-12 15:21:00,457 INFO L226 Difference]: Without dead ends: 12570 [2021-06-12 15:21:00,458 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 133.6ms TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2021-06-12 15:21:00,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12570 states. [2021-06-12 15:21:00,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12570 to 11010. [2021-06-12 15:21:00,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11010 states, 11008 states have (on average 2.543786337209302) internal successors, (28002), 11009 states have internal predecessors, (28002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:21:00,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11010 states to 11010 states and 28002 transitions. [2021-06-12 15:21:00,600 INFO L78 Accepts]: Start accepts. Automaton has 11010 states and 28002 transitions. Word has length 229 [2021-06-12 15:21:00,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:21:00,601 INFO L482 AbstractCegarLoop]: Abstraction has 11010 states and 28002 transitions. [2021-06-12 15:21:00,601 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 21.5) internal successors, (258), 12 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:21:00,601 INFO L276 IsEmpty]: Start isEmpty. Operand 11010 states and 28002 transitions. [2021-06-12 15:21:00,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-06-12 15:21:00,612 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:21:00,612 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, 1, 1, 1, 1] [2021-06-12 15:21:00,813 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-06-12 15:21:00,813 INFO L430 AbstractCegarLoop]: === Iteration 15 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:21:00,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:21:00,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1900736474, now seen corresponding path program 6 times [2021-06-12 15:21:00,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:21:00,814 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799671264] [2021-06-12 15:21:00,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:21:00,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:21:00,932 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 15:21:00,932 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:21:00,933 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799671264] [2021-06-12 15:21:00,933 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799671264] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:21:00,933 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588008258] [2021-06-12 15:21:00,933 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 15:21:01,115 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-06-12 15:21:01,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:21:01,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-12 15:21:01,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:21:01,445 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 15:21:01,445 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588008258] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:21:01,445 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:21:01,445 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-06-12 15:21:01,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991854287] [2021-06-12 15:21:01,446 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-12 15:21:01,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:21:01,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-12 15:21:01,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-06-12 15:21:01,446 INFO L87 Difference]: Start difference. First operand 11010 states and 28002 transitions. Second operand has 12 states, 12 states have (on average 21.333333333333332) internal successors, (256), 12 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:21:01,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:21:01,608 INFO L93 Difference]: Finished difference Result 11840 states and 30117 transitions. [2021-06-12 15:21:01,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-12 15:21:01,609 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 21.333333333333332) internal successors, (256), 12 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 229 [2021-06-12 15:21:01,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:21:01,620 INFO L225 Difference]: With dead ends: 11840 [2021-06-12 15:21:01,620 INFO L226 Difference]: Without dead ends: 10290 [2021-06-12 15:21:01,620 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 108.1ms TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2021-06-12 15:21:01,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10290 states. [2021-06-12 15:21:01,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10290 to 8630. [2021-06-12 15:21:01,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8630 states, 8628 states have (on average 2.536161335187761) internal successors, (21882), 8629 states have internal predecessors, (21882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:21:01,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8630 states to 8630 states and 21882 transitions. [2021-06-12 15:21:01,731 INFO L78 Accepts]: Start accepts. Automaton has 8630 states and 21882 transitions. Word has length 229 [2021-06-12 15:21:01,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:21:01,731 INFO L482 AbstractCegarLoop]: Abstraction has 8630 states and 21882 transitions. [2021-06-12 15:21:01,731 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 21.333333333333332) internal successors, (256), 12 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:21:01,731 INFO L276 IsEmpty]: Start isEmpty. Operand 8630 states and 21882 transitions. [2021-06-12 15:21:01,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-06-12 15:21:01,740 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:21:01,740 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, 1, 1, 1, 1] [2021-06-12 15:21:01,941 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-06-12 15:21:01,941 INFO L430 AbstractCegarLoop]: === Iteration 16 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:21:01,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:21:01,941 INFO L82 PathProgramCache]: Analyzing trace with hash 891651478, now seen corresponding path program 7 times [2021-06-12 15:21:01,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:21:01,941 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960479440] [2021-06-12 15:21:01,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:21:01,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:21:02,055 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 12 proven. 247 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-06-12 15:21:02,055 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:21:02,055 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960479440] [2021-06-12 15:21:02,056 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960479440] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:21:02,056 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707828585] [2021-06-12 15:21:02,056 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 15:21:02,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:21:02,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-12 15:21:02,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:21:02,514 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 12 proven. 247 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-06-12 15:21:02,514 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707828585] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:21:02,514 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:21:02,514 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-06-12 15:21:02,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899874246] [2021-06-12 15:21:02,515 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-12 15:21:02,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:21:02,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-12 15:21:02,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-06-12 15:21:02,516 INFO L87 Difference]: Start difference. First operand 8630 states and 21882 transitions. Second operand has 14 states, 14 states have (on average 19.571428571428573) internal successors, (274), 14 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:21:02,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:21:02,750 INFO L93 Difference]: Finished difference Result 12520 states and 31800 transitions. [2021-06-12 15:21:02,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-12 15:21:02,750 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 19.571428571428573) internal successors, (274), 14 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 229 [2021-06-12 15:21:02,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:21:02,759 INFO L225 Difference]: With dead ends: 12520 [2021-06-12 15:21:02,759 INFO L226 Difference]: Without dead ends: 8626 [2021-06-12 15:21:02,759 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 171.9ms TimeCoverageRelationStatistics Valid=169, Invalid=481, Unknown=0, NotChecked=0, Total=650 [2021-06-12 15:21:02,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8626 states. [2021-06-12 15:21:02,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8626 to 7406. [2021-06-12 15:21:02,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7406 states, 7404 states have (on average 2.539438141545111) internal successors, (18802), 7405 states have internal predecessors, (18802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:21:02,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7406 states to 7406 states and 18802 transitions. [2021-06-12 15:21:02,849 INFO L78 Accepts]: Start accepts. Automaton has 7406 states and 18802 transitions. Word has length 229 [2021-06-12 15:21:02,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:21:02,849 INFO L482 AbstractCegarLoop]: Abstraction has 7406 states and 18802 transitions. [2021-06-12 15:21:02,849 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 19.571428571428573) internal successors, (274), 14 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:21:02,849 INFO L276 IsEmpty]: Start isEmpty. Operand 7406 states and 18802 transitions. [2021-06-12 15:21:02,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-06-12 15:21:02,856 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:21:02,856 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, 1, 1, 1, 1] [2021-06-12 15:21:03,057 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-06-12 15:21:03,057 INFO L430 AbstractCegarLoop]: === Iteration 17 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:21:03,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:21:03,057 INFO L82 PathProgramCache]: Analyzing trace with hash 972675236, now seen corresponding path program 2 times [2021-06-12 15:21:03,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:21:03,058 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457296775] [2021-06-12 15:21:03,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:21:03,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:21:03,234 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 15:21:03,234 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:21:03,234 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457296775] [2021-06-12 15:21:03,234 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457296775] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:21:03,234 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932440592] [2021-06-12 15:21:03,234 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 15:21:03,370 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-12 15:21:03,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:21:03,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-12 15:21:03,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:21:03,737 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 12 proven. 240 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-06-12 15:21:03,737 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932440592] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:21:03,737 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:21:03,737 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 13 [2021-06-12 15:21:03,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954625392] [2021-06-12 15:21:03,738 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-12 15:21:03,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:21:03,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-12 15:21:03,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-12 15:21:03,739 INFO L87 Difference]: Start difference. First operand 7406 states and 18802 transitions. Second operand has 13 states, 13 states have (on average 20.76923076923077) internal successors, (270), 13 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:21:03,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:21:03,919 INFO L93 Difference]: Finished difference Result 10176 states and 25864 transitions. [2021-06-12 15:21:03,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-12 15:21:03,919 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 20.76923076923077) internal successors, (270), 13 states have internal predecessors, (270), 0 states have call successors, (0), 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 15:21:03,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:21:03,926 INFO L225 Difference]: With dead ends: 10176 [2021-06-12 15:21:03,926 INFO L226 Difference]: Without dead ends: 6246 [2021-06-12 15:21:03,926 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 144.6ms TimeCoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2021-06-12 15:21:03,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6246 states. [2021-06-12 15:21:03,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6246 to 6246. [2021-06-12 15:21:03,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6246 states, 6244 states have (on average 2.5342729019859065) internal successors, (15824), 6245 states have internal predecessors, (15824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:21:03,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6246 states to 6246 states and 15824 transitions. [2021-06-12 15:21:03,993 INFO L78 Accepts]: Start accepts. Automaton has 6246 states and 15824 transitions. Word has length 258 [2021-06-12 15:21:03,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:21:03,993 INFO L482 AbstractCegarLoop]: Abstraction has 6246 states and 15824 transitions. [2021-06-12 15:21:03,993 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 20.76923076923077) internal successors, (270), 13 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:21:03,993 INFO L276 IsEmpty]: Start isEmpty. Operand 6246 states and 15824 transitions. [2021-06-12 15:21:03,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-06-12 15:21:03,999 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:21:03,999 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, 1, 1, 1, 1] [2021-06-12 15:21:04,200 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:21:04,201 INFO L430 AbstractCegarLoop]: === Iteration 18 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:21:04,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:21:04,201 INFO L82 PathProgramCache]: Analyzing trace with hash 201498950, now seen corresponding path program 3 times [2021-06-12 15:21:04,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:21:04,201 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976443515] [2021-06-12 15:21:04,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:21:04,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:21:04,405 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 12 proven. 239 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-06-12 15:21:04,405 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:21:04,405 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976443515] [2021-06-12 15:21:04,405 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976443515] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:21:04,405 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922448866] [2021-06-12 15:21:04,405 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 15:21:04,516 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-12 15:21:04,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:21:04,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-12 15:21:04,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:21:04,904 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 15:21:04,904 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922448866] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 15:21:04,904 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-06-12 15:21:04,904 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2021-06-12 15:21:04,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907653297] [2021-06-12 15:21:04,905 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-12 15:21:04,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:21:04,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-12 15:21:04,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-06-12 15:21:04,906 INFO L87 Difference]: Start difference. First operand 6246 states and 15824 transitions. Second operand has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 6 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:21:05,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:21:05,051 INFO L93 Difference]: Finished difference Result 7556 states and 19163 transitions. [2021-06-12 15:21:05,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 15:21:05,051 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 6 states have internal predecessors, (175), 0 states have call successors, (0), 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 15:21:05,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:21:05,059 INFO L225 Difference]: With dead ends: 7556 [2021-06-12 15:21:05,060 INFO L226 Difference]: Without dead ends: 7026 [2021-06-12 15:21:05,060 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 153.2ms TimeCoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2021-06-12 15:21:05,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7026 states. [2021-06-12 15:21:05,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7026 to 6826. [2021-06-12 15:21:05,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6826 states, 6824 states have (on average 2.535609613130129) internal successors, (17303), 6825 states have internal predecessors, (17303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:21:05,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6826 states to 6826 states and 17303 transitions. [2021-06-12 15:21:05,157 INFO L78 Accepts]: Start accepts. Automaton has 6826 states and 17303 transitions. Word has length 258 [2021-06-12 15:21:05,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:21:05,158 INFO L482 AbstractCegarLoop]: Abstraction has 6826 states and 17303 transitions. [2021-06-12 15:21:05,158 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 6 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:21:05,158 INFO L276 IsEmpty]: Start isEmpty. Operand 6826 states and 17303 transitions. [2021-06-12 15:21:05,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-06-12 15:21:05,164 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:21:05,165 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, 1, 1, 1, 1] [2021-06-12 15:21:05,365 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-06-12 15:21:05,365 INFO L430 AbstractCegarLoop]: === Iteration 19 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:21:05,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:21:05,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1973337450, now seen corresponding path program 4 times [2021-06-12 15:21:05,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:21:05,366 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570438760] [2021-06-12 15:21:05,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:21:05,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:21:05,508 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 54 proven. 210 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-06-12 15:21:05,509 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:21:05,509 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570438760] [2021-06-12 15:21:05,509 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570438760] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:21:05,509 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795201549] [2021-06-12 15:21:05,509 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 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 15:21:05,648 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-12 15:21:05,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:21:05,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-12 15:21:05,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:21:06,107 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 54 proven. 210 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-06-12 15:21:06,108 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795201549] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:21:06,108 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:21:06,108 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-06-12 15:21:06,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064418066] [2021-06-12 15:21:06,109 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-12 15:21:06,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:21:06,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-12 15:21:06,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-12 15:21:06,110 INFO L87 Difference]: Start difference. First operand 6826 states and 17303 transitions. Second operand has 13 states, 13 states have (on average 21.0) internal successors, (273), 13 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:21:06,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:21:06,309 INFO L93 Difference]: Finished difference Result 6746 states and 17093 transitions. [2021-06-12 15:21:06,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-12 15:21:06,309 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 21.0) internal successors, (273), 13 states have internal predecessors, (273), 0 states have call successors, (0), 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 287 [2021-06-12 15:21:06,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:21:06,310 INFO L225 Difference]: With dead ends: 6746 [2021-06-12 15:21:06,310 INFO L226 Difference]: Without dead ends: 0 [2021-06-12 15:21:06,310 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 154.2ms TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2021-06-12 15:21:06,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-12 15:21:06,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-12 15:21:06,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:21:06,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-12 15:21:06,310 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 287 [2021-06-12 15:21:06,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:21:06,310 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-12 15:21:06,311 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 21.0) internal successors, (273), 13 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:21:06,311 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-12 15:21:06,311 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-12 15:21:06,516 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:21:06,517 INFO L301 ceAbstractionStarter]: Result for error location t1Thread1of1ForFork0 was SAFE (1/5) [2021-06-12 15:21:06,518 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-12 15:21:06,519 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-12 15:21:06,519 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-12 15:21:06,519 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-12 15:21:06,519 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-12 15:21:06,519 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-12 15:21:06,519 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-12 15:21:06,520 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-12 15:21:06,520 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-12 15:21:06,522 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 149 places, 154 transitions, 330 flow [2021-06-12 15:21:06,818 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8468 states, 8464 states have (on average 2.8676748582230625) internal successors, (24272), 8467 states have internal predecessors, (24272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:21:06,830 INFO L276 IsEmpty]: Start isEmpty. Operand has 8468 states, 8464 states have (on average 2.8676748582230625) internal successors, (24272), 8467 states have internal predecessors, (24272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:21:06,857 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-12 15:21:06,857 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (2/5) [2021-06-12 15:21:06,858 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-12 15:21:06,858 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-12 15:21:06,858 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-12 15:21:06,858 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-12 15:21:06,858 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-12 15:21:06,859 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-12 15:21:06,859 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-12 15:21:06,859 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-12 15:21:06,859 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == t2Thread1of1ForFork1======== [2021-06-12 15:21:06,864 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 149 places, 154 transitions, 330 flow [2021-06-12 15:21:07,116 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8468 states, 8464 states have (on average 2.8676748582230625) internal successors, (24272), 8467 states have internal predecessors, (24272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:21:07,125 INFO L276 IsEmpty]: Start isEmpty. Operand has 8468 states, 8464 states have (on average 2.8676748582230625) internal successors, (24272), 8467 states have internal predecessors, (24272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:21:07,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-12 15:21:07,130 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:21:07,130 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] [2021-06-12 15:21:07,130 INFO L430 AbstractCegarLoop]: === Iteration 1 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:21:07,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:21:07,131 INFO L82 PathProgramCache]: Analyzing trace with hash -222896259, now seen corresponding path program 1 times [2021-06-12 15:21:07,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:21:07,131 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358238152] [2021-06-12 15:21:07,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:21:07,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:21:07,153 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 15:21:07,153 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:21:07,153 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358238152] [2021-06-12 15:21:07,153 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358238152] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 15:21:07,153 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 15:21:07,153 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-12 15:21:07,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084299424] [2021-06-12 15:21:07,154 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-12 15:21:07,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:21:07,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-12 15:21:07,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 15:21:07,166 INFO L87 Difference]: Start difference. First operand has 8468 states, 8464 states have (on average 2.8676748582230625) internal successors, (24272), 8467 states have internal predecessors, (24272), 0 states have call successors, (0), 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 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:21:07,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:21:07,235 INFO L93 Difference]: Finished difference Result 11839 states and 32309 transitions. [2021-06-12 15:21:07,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-12 15:21:07,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2021-06-12 15:21:07,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:21:07,253 INFO L225 Difference]: With dead ends: 11839 [2021-06-12 15:21:07,253 INFO L226 Difference]: Without dead ends: 10093 [2021-06-12 15:21:07,253 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 15:21:07,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10093 states. [2021-06-12 15:21:07,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10093 to 9892. [2021-06-12 15:21:07,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9892 states, 9889 states have (on average 2.7615532409748207) internal successors, (27309), 9891 states have internal predecessors, (27309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:21:07,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9892 states to 9892 states and 27309 transitions. [2021-06-12 15:21:07,428 INFO L78 Accepts]: Start accepts. Automaton has 9892 states and 27309 transitions. Word has length 57 [2021-06-12 15:21:07,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:21:07,429 INFO L482 AbstractCegarLoop]: Abstraction has 9892 states and 27309 transitions. [2021-06-12 15:21:07,429 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:21:07,429 INFO L276 IsEmpty]: Start isEmpty. Operand 9892 states and 27309 transitions. [2021-06-12 15:21:07,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-06-12 15:21:07,432 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:21:07,432 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:21:07,433 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-06-12 15:21:07,433 INFO L430 AbstractCegarLoop]: === Iteration 2 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:21:07,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:21:07,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1707207375, now seen corresponding path program 1 times [2021-06-12 15:21:07,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:21:07,433 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730001326] [2021-06-12 15:21:07,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:21:07,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:21:07,455 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 15:21:07,455 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:21:07,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730001326] [2021-06-12 15:21:07,456 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730001326] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 15:21:07,456 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 15:21:07,456 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-12 15:21:07,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838082566] [2021-06-12 15:21:07,456 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-12 15:21:07,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:21:07,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-12 15:21:07,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 15:21:07,457 INFO L87 Difference]: Start difference. First operand 9892 states and 27309 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:21:07,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:21:07,482 INFO L93 Difference]: Finished difference Result 4122 states and 10606 transitions. [2021-06-12 15:21:07,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-12 15:21:07,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-06-12 15:21:07,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:21:07,487 INFO L225 Difference]: With dead ends: 4122 [2021-06-12 15:21:07,488 INFO L226 Difference]: Without dead ends: 3970 [2021-06-12 15:21:07,488 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 15:21:07,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3970 states. [2021-06-12 15:21:07,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3970 to 3568. [2021-06-12 15:21:07,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3568 states, 3566 states have (on average 2.583567021873247) internal successors, (9213), 3567 states have internal predecessors, (9213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:21:07,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3568 states to 3568 states and 9213 transitions. [2021-06-12 15:21:07,549 INFO L78 Accepts]: Start accepts. Automaton has 3568 states and 9213 transitions. Word has length 85 [2021-06-12 15:21:07,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:21:07,549 INFO L482 AbstractCegarLoop]: Abstraction has 3568 states and 9213 transitions. [2021-06-12 15:21:07,549 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:21:07,549 INFO L276 IsEmpty]: Start isEmpty. Operand 3568 states and 9213 transitions. [2021-06-12 15:21:07,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-06-12 15:21:07,553 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:21:07,553 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:21:07,553 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-06-12 15:21:07,553 INFO L430 AbstractCegarLoop]: === Iteration 3 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:21:07,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:21:07,554 INFO L82 PathProgramCache]: Analyzing trace with hash -315494749, now seen corresponding path program 1 times [2021-06-12 15:21:07,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:21:07,554 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203850501] [2021-06-12 15:21:07,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:21:07,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:21:07,577 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 15:21:07,577 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:21:07,578 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203850501] [2021-06-12 15:21:07,578 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203850501] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 15:21:07,578 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 15:21:07,578 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-12 15:21:07,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869533843] [2021-06-12 15:21:07,578 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-12 15:21:07,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:21:07,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-12 15:21:07,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 15:21:07,579 INFO L87 Difference]: Start difference. First operand 3568 states and 9213 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:21:07,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:21:07,609 INFO L93 Difference]: Finished difference Result 4701 states and 12051 transitions. [2021-06-12 15:21:07,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-12 15:21:07,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2021-06-12 15:21:07,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:21:07,615 INFO L225 Difference]: With dead ends: 4701 [2021-06-12 15:21:07,616 INFO L226 Difference]: Without dead ends: 4701 [2021-06-12 15:21:07,616 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 15:21:07,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4701 states. [2021-06-12 15:21:07,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4701 to 3865. [2021-06-12 15:21:07,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3865 states, 3863 states have (on average 2.5630339114677714) internal successors, (9901), 3864 states have internal predecessors, (9901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:21:07,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3865 states to 3865 states and 9901 transitions. [2021-06-12 15:21:07,681 INFO L78 Accepts]: Start accepts. Automaton has 3865 states and 9901 transitions. Word has length 92 [2021-06-12 15:21:07,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:21:07,683 INFO L482 AbstractCegarLoop]: Abstraction has 3865 states and 9901 transitions. [2021-06-12 15:21:07,683 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:21:07,683 INFO L276 IsEmpty]: Start isEmpty. Operand 3865 states and 9901 transitions. [2021-06-12 15:21:07,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-06-12 15:21:07,688 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:21:07,688 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:21:07,688 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-06-12 15:21:07,688 INFO L430 AbstractCegarLoop]: === Iteration 4 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:21:07,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:21:07,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1879841945, now seen corresponding path program 1 times [2021-06-12 15:21:07,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:21:07,688 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834646564] [2021-06-12 15:21:07,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:21:07,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:21:08,334 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 15:21:08,334 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:21:08,334 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834646564] [2021-06-12 15:21:08,334 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834646564] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 15:21:08,334 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 15:21:08,334 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-06-12 15:21:08,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067453746] [2021-06-12 15:21:08,334 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-12 15:21:08,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:21:08,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-12 15:21:08,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2021-06-12 15:21:08,335 INFO L87 Difference]: Start difference. First operand 3865 states and 9901 transitions. Second operand has 24 states, 24 states have (on average 4.25) internal successors, (102), 24 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:21:10,914 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2021-06-12 15:21:11,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:21:11,154 INFO L93 Difference]: Finished difference Result 9259 states and 23813 transitions. [2021-06-12 15:21:11,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-12 15:21:11,155 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.25) internal successors, (102), 24 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2021-06-12 15:21:11,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:21:11,165 INFO L225 Difference]: With dead ends: 9259 [2021-06-12 15:21:11,165 INFO L226 Difference]: Without dead ends: 8521 [2021-06-12 15:21:11,166 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 663 ImplicationChecksByTransitivity, 2143.3ms TimeCoverageRelationStatistics Valid=577, Invalid=2963, Unknown=0, NotChecked=0, Total=3540 [2021-06-12 15:21:11,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8521 states. [2021-06-12 15:21:11,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8521 to 5713. [2021-06-12 15:21:11,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5713 states, 5711 states have (on average 2.561197688670986) internal successors, (14627), 5712 states have internal predecessors, (14627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:21:11,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5713 states to 5713 states and 14627 transitions. [2021-06-12 15:21:11,253 INFO L78 Accepts]: Start accepts. Automaton has 5713 states and 14627 transitions. Word has length 102 [2021-06-12 15:21:11,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:21:11,254 INFO L482 AbstractCegarLoop]: Abstraction has 5713 states and 14627 transitions. [2021-06-12 15:21:11,254 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.25) internal successors, (102), 24 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:21:11,254 INFO L276 IsEmpty]: Start isEmpty. Operand 5713 states and 14627 transitions. [2021-06-12 15:21:11,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-06-12 15:21:11,258 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:21:11,259 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:21:11,259 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-06-12 15:21:11,259 INFO L430 AbstractCegarLoop]: === Iteration 5 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:21:11,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:21:11,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1475354589, now seen corresponding path program 2 times [2021-06-12 15:21:11,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:21:11,259 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005457064] [2021-06-12 15:21:11,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:21:11,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:21:12,001 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 15:21:12,001 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:21:12,001 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005457064] [2021-06-12 15:21:12,001 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005457064] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 15:21:12,002 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 15:21:12,002 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-06-12 15:21:12,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962118369] [2021-06-12 15:21:12,002 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-12 15:21:12,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:21:12,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-12 15:21:12,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2021-06-12 15:21:12,003 INFO L87 Difference]: Start difference. First operand 5713 states and 14627 transitions. Second operand has 28 states, 28 states have (on average 3.642857142857143) internal successors, (102), 28 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:21:14,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:21:14,210 INFO L93 Difference]: Finished difference Result 12089 states and 31086 transitions. [2021-06-12 15:21:14,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-12 15:21:14,210 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.642857142857143) internal successors, (102), 28 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2021-06-12 15:21:14,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:21:14,223 INFO L225 Difference]: With dead ends: 12089 [2021-06-12 15:21:14,223 INFO L226 Difference]: Without dead ends: 11546 [2021-06-12 15:21:14,223 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 1812.8ms TimeCoverageRelationStatistics Valid=399, Invalid=2463, Unknown=0, NotChecked=0, Total=2862 [2021-06-12 15:21:14,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11546 states. [2021-06-12 15:21:14,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11546 to 6669. [2021-06-12 15:21:14,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6669 states, 6667 states have (on average 2.5642717864106794) internal successors, (17096), 6668 states have internal predecessors, (17096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:21:14,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6669 states to 6669 states and 17096 transitions. [2021-06-12 15:21:14,325 INFO L78 Accepts]: Start accepts. Automaton has 6669 states and 17096 transitions. Word has length 102 [2021-06-12 15:21:14,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:21:14,325 INFO L482 AbstractCegarLoop]: Abstraction has 6669 states and 17096 transitions. [2021-06-12 15:21:14,325 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.642857142857143) internal successors, (102), 28 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:21:14,326 INFO L276 IsEmpty]: Start isEmpty. Operand 6669 states and 17096 transitions. [2021-06-12 15:21:14,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-06-12 15:21:14,331 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:21:14,331 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:21:14,331 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-06-12 15:21:14,331 INFO L430 AbstractCegarLoop]: === Iteration 6 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:21:14,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:21:14,331 INFO L82 PathProgramCache]: Analyzing trace with hash 61773313, now seen corresponding path program 3 times [2021-06-12 15:21:14,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:21:14,332 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045366870] [2021-06-12 15:21:14,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:21:14,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:21:15,065 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 15:21:15,065 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:21:15,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045366870] [2021-06-12 15:21:15,066 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045366870] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 15:21:15,066 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 15:21:15,066 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-06-12 15:21:15,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038323089] [2021-06-12 15:21:15,066 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-12 15:21:15,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:21:15,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-12 15:21:15,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2021-06-12 15:21:15,067 INFO L87 Difference]: Start difference. First operand 6669 states and 17096 transitions. Second operand has 28 states, 28 states have (on average 3.642857142857143) internal successors, (102), 28 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:21:18,270 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2021-06-12 15:21:18,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:21:18,538 INFO L93 Difference]: Finished difference Result 12531 states and 32234 transitions. [2021-06-12 15:21:18,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-12 15:21:18,538 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.642857142857143) internal successors, (102), 28 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2021-06-12 15:21:18,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:21:18,550 INFO L225 Difference]: With dead ends: 12531 [2021-06-12 15:21:18,550 INFO L226 Difference]: Without dead ends: 11823 [2021-06-12 15:21:18,551 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 883 ImplicationChecksByTransitivity, 2826.3ms TimeCoverageRelationStatistics Valid=621, Invalid=3669, Unknown=0, NotChecked=0, Total=4290 [2021-06-12 15:21:18,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11823 states. [2021-06-12 15:21:18,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11823 to 5713. [2021-06-12 15:21:18,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5713 states, 5711 states have (on average 2.5603221852565223) internal successors, (14622), 5712 states have internal predecessors, (14622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:21:18,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5713 states to 5713 states and 14622 transitions. [2021-06-12 15:21:18,647 INFO L78 Accepts]: Start accepts. Automaton has 5713 states and 14622 transitions. Word has length 102 [2021-06-12 15:21:18,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:21:18,647 INFO L482 AbstractCegarLoop]: Abstraction has 5713 states and 14622 transitions. [2021-06-12 15:21:18,648 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.642857142857143) internal successors, (102), 28 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:21:18,648 INFO L276 IsEmpty]: Start isEmpty. Operand 5713 states and 14622 transitions. [2021-06-12 15:21:18,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-06-12 15:21:18,653 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:21:18,653 INFO L472 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-06-12 15:21:18,653 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-06-12 15:21:18,653 INFO L430 AbstractCegarLoop]: === Iteration 7 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:21:18,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:21:18,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1884830054, now seen corresponding path program 1 times [2021-06-12 15:21:18,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:21:18,653 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888980466] [2021-06-12 15:21:18,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:21:18,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:21:19,269 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:21:19,269 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:21:19,269 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888980466] [2021-06-12 15:21:19,269 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888980466] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:21:19,269 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369206131] [2021-06-12 15:21:19,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 15:21:19,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:21:19,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 58 conjunts are in the unsatisfiable core [2021-06-12 15:21:19,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:21:19,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-12 15:21:19,851 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-12 15:21:19,867 INFO L628 ElimStorePlain]: treesize reduction 5, result has 83.3 percent of original size [2021-06-12 15:21:19,869 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-06-12 15:21:19,870 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:34, output treesize:28 [2021-06-12 15:21:20,158 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-12 15:21:20,160 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-12 15:21:20,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 13 [2021-06-12 15:21:20,163 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-12 15:21:20,168 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-12 15:21:20,171 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-06-12 15:21:20,171 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:30, output treesize:7 [2021-06-12 15:21:20,343 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:21:20,343 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369206131] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:21:20,343 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:21:20,343 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 36 [2021-06-12 15:21:20,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484970338] [2021-06-12 15:21:20,344 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-12 15:21:20,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:21:20,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-12 15:21:20,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=1167, Unknown=0, NotChecked=0, Total=1260 [2021-06-12 15:21:20,345 INFO L87 Difference]: Start difference. First operand 5713 states and 14622 transitions. Second operand has 36 states, 36 states have (on average 4.444444444444445) internal successors, (160), 36 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:21:23,186 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2021-06-12 15:21:23,681 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2021-06-12 15:21:23,836 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2021-06-12 15:21:24,088 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-06-12 15:21:24,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:21:24,389 INFO L93 Difference]: Finished difference Result 12591 states and 32345 transitions. [2021-06-12 15:21:24,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-12 15:21:24,389 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.444444444444445) internal successors, (160), 36 states have internal predecessors, (160), 0 states have call successors, (0), 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 136 [2021-06-12 15:21:24,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:21:24,403 INFO L225 Difference]: With dead ends: 12591 [2021-06-12 15:21:24,403 INFO L226 Difference]: Without dead ends: 12591 [2021-06-12 15:21:24,404 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1200 ImplicationChecksByTransitivity, 3279.5ms TimeCoverageRelationStatistics Valid=694, Invalid=4708, Unknown=0, NotChecked=0, Total=5402 [2021-06-12 15:21:24,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12591 states. [2021-06-12 15:21:24,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12591 to 8812. [2021-06-12 15:21:24,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8812 states, 8810 states have (on average 2.565493757094211) internal successors, (22602), 8811 states have internal predecessors, (22602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:21:24,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8812 states to 8812 states and 22602 transitions. [2021-06-12 15:21:24,528 INFO L78 Accepts]: Start accepts. Automaton has 8812 states and 22602 transitions. Word has length 136 [2021-06-12 15:21:24,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:21:24,528 INFO L482 AbstractCegarLoop]: Abstraction has 8812 states and 22602 transitions. [2021-06-12 15:21:24,529 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 4.444444444444445) internal successors, (160), 36 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:21:24,529 INFO L276 IsEmpty]: Start isEmpty. Operand 8812 states and 22602 transitions. [2021-06-12 15:21:24,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-06-12 15:21:24,537 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:21:24,537 INFO L472 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-06-12 15:21:24,737 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-06-12 15:21:24,737 INFO L430 AbstractCegarLoop]: === Iteration 8 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:21:24,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:21:24,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1485268962, now seen corresponding path program 2 times [2021-06-12 15:21:24,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:21:24,738 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441001605] [2021-06-12 15:21:24,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:21:24,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:21:25,801 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:21:25,801 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:21:25,801 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441001605] [2021-06-12 15:21:25,801 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441001605] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:21:25,801 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349008527] [2021-06-12 15:21:25,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:21:25,913 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-06-12 15:21:25,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:21:25,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 60 conjunts are in the unsatisfiable core [2021-06-12 15:21:25,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:21:25,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-06-12 15:21:25,938 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-12 15:21:25,939 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-12 15:21:25,939 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-12 15:21:25,939 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2021-06-12 15:21:25,992 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-06-12 15:21:25,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-06-12 15:21:25,995 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-12 15:21:25,999 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-12 15:21:26,001 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-06-12 15:21:26,001 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:15 [2021-06-12 15:21:26,144 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-06-12 15:21:26,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2021-06-12 15:21:26,146 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-12 15:21:26,155 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-12 15:21:26,160 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-06-12 15:21:26,161 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:26, output treesize:28 [2021-06-12 15:21:26,262 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-06-12 15:21:26,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 25 [2021-06-12 15:21:26,267 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-12 15:21:26,275 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-12 15:21:26,277 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-12 15:21:26,277 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:33, output treesize:4 Received shutdown request... [2021-06-12 15:34:56,964 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-06-12 15:34:56,964 WARN L547 AbstractCegarLoop]: Verification canceled [2021-06-12 15:34:56,964 INFO L301 ceAbstractionStarter]: Result for error location t2Thread1of1ForFork1 was TIMEOUT (3/5) [2021-06-12 15:34:56,965 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-12 15:34:56,966 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-12 15:34:56,966 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-12 15:34:56,966 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-12 15:34:56,966 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-12 15:34:56,966 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-12 15:34:56,966 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-12 15:34:56,966 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-12 15:34:56,966 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == t1======== [2021-06-12 15:34:56,968 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 149 places, 154 transitions, 330 flow [2021-06-12 15:34:56,968 WARN L547 AbstractCegarLoop]: Verification canceled [2021-06-12 15:34:56,968 INFO L301 ceAbstractionStarter]: Result for error location t1 was TIMEOUT (4/5) [2021-06-12 15:34:56,969 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-12 15:34:56,969 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-12 15:34:56,969 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-12 15:34:56,969 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-12 15:34:56,969 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-12 15:34:56,969 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-12 15:34:56,969 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-12 15:34:56,969 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-12 15:34:56,969 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == t2======== [2021-06-12 15:34:56,970 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 149 places, 154 transitions, 330 flow [2021-06-12 15:34:56,970 WARN L547 AbstractCegarLoop]: Verification canceled [2021-06-12 15:34:56,971 INFO L301 ceAbstractionStarter]: Result for error location t2 was TIMEOUT (5/5) [2021-06-12 15:34:56,971 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-12 15:34:56,973 WARN L196 ceAbstractionStarter]: Timeout [2021-06-12 15:34:56,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.06 03:34:56 BasicIcfg [2021-06-12 15:34:56,973 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-12 15:34:56,973 INFO L168 Benchmark]: Toolchain (without parser) took 855444.73 ms. Allocated memory was 232.8 MB in the beginning and 2.7 GB in the end (delta: 2.4 GB). Free memory was 195.2 MB in the beginning and 813.1 MB in the end (delta: -618.0 MB). Peak memory consumption was 1.8 GB. Max. memory is 8.0 GB. [2021-06-12 15:34:56,973 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 232.8 MB. Free memory is still 213.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-12 15:34:56,974 INFO L168 Benchmark]: CACSL2BoogieTranslator took 543.65 ms. Allocated memory is still 232.8 MB. Free memory was 195.0 MB in the beginning and 167.8 MB in the end (delta: 27.1 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. [2021-06-12 15:34:56,974 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.93 ms. Allocated memory is still 232.8 MB. Free memory was 167.8 MB in the beginning and 165.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-06-12 15:34:56,974 INFO L168 Benchmark]: Boogie Preprocessor took 24.13 ms. Allocated memory is still 232.8 MB. Free memory was 165.2 MB in the beginning and 163.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-12 15:34:56,974 INFO L168 Benchmark]: RCFGBuilder took 517.99 ms. Allocated memory is still 232.8 MB. Free memory was 163.6 MB in the beginning and 130.1 MB in the end (delta: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 8.0 GB. [2021-06-12 15:34:56,974 INFO L168 Benchmark]: TraceAbstraction took 854291.34 ms. Allocated memory was 232.8 MB in the beginning and 2.7 GB in the end (delta: 2.4 GB). Free memory was 129.6 MB in the beginning and 813.1 MB in the end (delta: -683.6 MB). Peak memory consumption was 1.7 GB. Max. memory is 8.0 GB. [2021-06-12 15:34:56,974 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 232.8 MB. Free memory is still 213.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 543.65 ms. Allocated memory is still 232.8 MB. Free memory was 195.0 MB in the beginning and 167.8 MB in the end (delta: 27.1 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 61.93 ms. Allocated memory is still 232.8 MB. Free memory was 167.8 MB in the beginning and 165.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 24.13 ms. Allocated memory is still 232.8 MB. Free memory was 165.2 MB in the beginning and 163.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 517.99 ms. Allocated memory is still 232.8 MB. Free memory was 163.6 MB in the beginning and 130.1 MB in the end (delta: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 854291.34 ms. Allocated memory was 232.8 MB in the beginning and 2.7 GB in the end (delta: 2.4 GB). Free memory was 129.6 MB in the beginning and 813.1 MB in the end (delta: -683.6 MB). Peak memory consumption was 1.7 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 941]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing initial abstraction,while PetriNet2FiniteAutomaton was constructing automaton for Petri net that has has 149 places, 154 transitions, 330 flow. Already constructed 2 states. Currently 1 states in worklist.. - TimeoutResultAtElement [Line: 941]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was analyzing trace of length 137 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while QuantifierPusher was running 1 iterations of DualJunctionQuantifierElimination. - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: t1Thread1of1ForFork0 with 1 thread instances CFG has 5 procedures, 234 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 23645.3ms, OverallIterations: 19, TraceHistogramMax: 6, EmptinessCheckTime: 430.7ms, AutomataDifference: 4318.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 399.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3604 SDtfs, 8647 SDslu, 16168 SDs, 0 SdLazy, 1566 SolverSat, 229 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 974.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3514 GetRequests, 3217 SyntacticMatches, 0 SemanticMatches, 297 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 968 ImplicationChecksByTransitivity, 2029.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=14966occurred in iteration=12, InterpolantAutomatonStates: 251, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 4478.5ms AutomataMinimizationTime, 19 MinimizatonAttempts, 46283 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 502.9ms SsaConstructionTime, 1568.9ms SatisfiabilityAnalysisTime, 7307.1ms InterpolantComputationTime, 6622 NumberOfCodeBlocks, 6391 NumberOfCodeBlocksAsserted, 58 NumberOfCheckSat, 6587 ConstructedInterpolants, 0 QuantifiedInterpolants, 17962 SizeOfPredicates, 126 NumberOfNonLiveVariables, 6104 ConjunctsInSsa, 163 ConjunctsInUnsatCore, 35 InterpolantComputations, 6 PerfectInterpolantSequences, 2047/6660 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 5 procedures, 234 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 338.1ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 39.1ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 298.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8468occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: t2Thread1of1ForFork1 with 1 thread instances CFG has 5 procedures, 234 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 830105.9ms, OverallIterations: 8, TraceHistogramMax: 2, EmptinessCheckTime: 47.9ms, AutomataDifference: 12763.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 257.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2440 SDtfs, 4786 SDslu, 32483 SDs, 0 SdLazy, 9753 SolverSat, 119 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3936.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 393 GetRequests, 137 SyntacticMatches, 7 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3316 ImplicationChecksByTransitivity, 10068.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9892occurred in iteration=1, InterpolantAutomatonStates: 178, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 710.1ms AutomataMinimizationTime, 7 MinimizatonAttempts, 19013 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 32.7ms SsaConstructionTime, 140.7ms SatisfiabilityAnalysisTime, 3648.0ms InterpolantComputationTime, 812 NumberOfCodeBlocks, 812 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 804 ConstructedInterpolants, 0 QuantifiedInterpolants, 9182 SizeOfPredicates, 29 NumberOfNonLiveVariables, 303 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 0/62 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: t1 with 1 thread instances CFG has 5 procedures, 234 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 2.4ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: t2 with 1 thread instances CFG has 5 procedures, 234 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 1.5ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown