/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-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-13 18:20:18,141 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-13 18:20:18,143 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-13 18:20:18,172 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-13 18:20:18,173 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-13 18:20:18,175 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-13 18:20:18,177 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-13 18:20:18,181 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-13 18:20:18,182 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-13 18:20:18,185 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-13 18:20:18,186 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-13 18:20:18,187 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-13 18:20:18,187 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-13 18:20:18,189 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-13 18:20:18,191 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-13 18:20:18,192 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-13 18:20:18,194 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-13 18:20:18,194 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-13 18:20:18,196 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-13 18:20:18,200 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-13 18:20:18,201 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-13 18:20:18,201 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-13 18:20:18,202 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-13 18:20:18,203 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-13 18:20:18,208 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-13 18:20:18,208 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-13 18:20:18,208 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-13 18:20:18,209 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-13 18:20:18,209 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-13 18:20:18,210 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-13 18:20:18,210 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-13 18:20:18,211 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-13 18:20:18,212 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-13 18:20:18,227 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-13 18:20:18,228 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-13 18:20:18,228 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-13 18:20:18,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-13 18:20:18,229 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-13 18:20:18,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-13 18:20:18,229 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-13 18:20:18,230 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-13 18:20:18,233 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 [2021-07-13 18:20:18,262 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-13 18:20:18,262 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-13 18:20:18,263 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-13 18:20:18,263 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-13 18:20:18,265 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-13 18:20:18,265 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-13 18:20:18,265 INFO L138 SettingsManager]: * Use SBE=true [2021-07-13 18:20:18,265 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-13 18:20:18,265 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-13 18:20:18,265 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-13 18:20:18,266 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-13 18:20:18,266 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-13 18:20:18,266 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-13 18:20:18,266 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-13 18:20:18,266 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-13 18:20:18,266 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-13 18:20:18,266 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-13 18:20:18,267 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-13 18:20:18,267 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-13 18:20:18,267 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-13 18:20:18,267 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-13 18:20:18,267 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-13 18:20:18,267 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-13 18:20:18,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-13 18:20:18,267 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-13 18:20:18,267 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-13 18:20:18,267 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-13 18:20:18,268 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-13 18:20:18,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-13 18:20:18,268 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-13 18:20:18,268 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-13 18:20:18,268 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-13 18:20:18,535 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-13 18:20:18,551 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-13 18:20:18,553 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-13 18:20:18,553 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-13 18:20:18,554 INFO L275 PluginConnector]: CDTParser initialized [2021-07-13 18:20:18,555 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack-1.i [2021-07-13 18:20:18,611 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68f9382c8/aa67c4ebf09d40f9bf82b926ecc6b8c1/FLAG605043782 [2021-07-13 18:20:19,031 INFO L306 CDTParser]: Found 1 translation units. [2021-07-13 18:20:19,031 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-1.i [2021-07-13 18:20:19,045 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68f9382c8/aa67c4ebf09d40f9bf82b926ecc6b8c1/FLAG605043782 [2021-07-13 18:20:19,054 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68f9382c8/aa67c4ebf09d40f9bf82b926ecc6b8c1 [2021-07-13 18:20:19,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-13 18:20:19,057 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-07-13 18:20:19,058 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-13 18:20:19,058 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-13 18:20:19,066 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-13 18:20:19,066 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:20:19" (1/1) ... [2021-07-13 18:20:19,067 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b562b5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:20:19, skipping insertion in model container [2021-07-13 18:20:19,067 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:20:19" (1/1) ... [2021-07-13 18:20:19,071 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-13 18:20:19,104 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-13 18:20:19,353 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] [2021-07-13 18:20:19,368 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-13 18:20:19,376 INFO L203 MainTranslator]: Completed pre-run [2021-07-13 18:20:19,406 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] [2021-07-13 18:20:19,415 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-13 18:20:19,450 INFO L208 MainTranslator]: Completed translation [2021-07-13 18:20:19,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:20:19 WrapperNode [2021-07-13 18:20:19,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-13 18:20:19,451 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-13 18:20:19,451 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-13 18:20:19,451 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-13 18:20:19,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:20:19" (1/1) ... [2021-07-13 18:20:19,467 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:20:19" (1/1) ... [2021-07-13 18:20:19,484 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-13 18:20:19,487 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-13 18:20:19,487 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-13 18:20:19,487 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-13 18:20:19,492 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:20:19" (1/1) ... [2021-07-13 18:20:19,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:20:19" (1/1) ... [2021-07-13 18:20:19,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:20:19" (1/1) ... [2021-07-13 18:20:19,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:20:19" (1/1) ... [2021-07-13 18:20:19,500 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:20:19" (1/1) ... [2021-07-13 18:20:19,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:20:19" (1/1) ... [2021-07-13 18:20:19,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:20:19" (1/1) ... [2021-07-13 18:20:19,517 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-13 18:20:19,518 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-13 18:20:19,518 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-13 18:20:19,518 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-13 18:20:19,519 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:20:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-13 18:20:19,563 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-07-13 18:20:19,564 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-07-13 18:20:19,564 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-07-13 18:20:19,564 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-07-13 18:20:19,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-13 18:20:19,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-13 18:20:19,564 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-07-13 18:20:19,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-13 18:20:19,564 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-07-13 18:20:19,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-13 18:20:19,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-13 18:20:19,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-13 18:20:19,566 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-13 18:20:19,990 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-13 18:20:19,990 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2021-07-13 18:20:19,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:20:19 BoogieIcfgContainer [2021-07-13 18:20:19,992 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-13 18:20:19,993 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-13 18:20:19,993 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-13 18:20:19,995 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-13 18:20:19,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 06:20:19" (1/3) ... [2021-07-13 18:20:19,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16603c63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:20:19, skipping insertion in model container [2021-07-13 18:20:19,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:20:19" (2/3) ... [2021-07-13 18:20:19,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16603c63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:20:19, skipping insertion in model container [2021-07-13 18:20:19,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:20:19" (3/3) ... [2021-07-13 18:20:19,998 INFO L111 eAbstractionObserver]: Analyzing ICFG stack-1.i [2021-07-13 18:20:20,002 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-13 18:20:20,002 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-13 18:20:20,002 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-07-13 18:20:20,003 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-13 18:20:20,041 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,042 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,042 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,042 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,042 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,042 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,042 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,042 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,042 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,042 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,043 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,043 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,043 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,043 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,043 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,043 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,043 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,043 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,043 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,044 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,044 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,044 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,044 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,044 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,045 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,045 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,045 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,045 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,045 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,045 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,045 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,045 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,045 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,046 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,046 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,046 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,046 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,046 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,046 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,047 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,047 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,047 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,047 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,047 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,047 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,047 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,048 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,048 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,048 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,048 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,048 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,048 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,048 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,048 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,048 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,049 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,049 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,049 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,049 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,049 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,049 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,049 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,049 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,049 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,050 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,050 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,051 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,051 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,051 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,051 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,051 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,051 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,051 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,051 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,051 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,052 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,052 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,052 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,052 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,052 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,053 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,053 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,053 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,053 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,053 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,053 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,053 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,053 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,054 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,054 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,054 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,054 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,054 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,054 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,054 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,055 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,055 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,055 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,056 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,057 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,058 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,058 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,058 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,061 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,062 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,062 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,062 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,062 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,062 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,062 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,062 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,062 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,063 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,063 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,063 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,063 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,063 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,063 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,063 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,064 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,064 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,064 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,064 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,064 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,064 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,064 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,064 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,064 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,064 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,064 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,065 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,065 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,065 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,065 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,065 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,065 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,066 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,066 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,066 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,066 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,066 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,067 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,067 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,067 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,067 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,067 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,067 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,067 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,068 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,068 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,068 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,068 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,068 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,068 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,068 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,068 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,068 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,069 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,069 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,069 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,069 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,069 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,069 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,069 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,070 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,070 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,070 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,071 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,071 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,071 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,071 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,071 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,071 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,071 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,071 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,071 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,071 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,071 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,072 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,072 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,072 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,072 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,072 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,072 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,072 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,072 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,072 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,072 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,072 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,073 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,073 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,073 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,073 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,073 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,073 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,073 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,073 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,073 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,074 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,074 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,074 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,074 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,074 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,074 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,074 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,074 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,074 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,074 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,075 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,075 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,075 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,075 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,075 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,075 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,075 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,075 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,076 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,076 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,077 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,077 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,078 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,078 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,078 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,078 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,078 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,078 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,078 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,078 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,078 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,078 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,079 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,079 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,079 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,079 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,079 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,079 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,079 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,079 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,079 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,079 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,079 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,079 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,080 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,080 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,080 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,080 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,081 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,082 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,082 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,082 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,082 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,082 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,082 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,082 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,082 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,082 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,082 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,082 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,083 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,083 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,083 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,083 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,083 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,083 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,083 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,083 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,083 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,083 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,083 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,087 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,087 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,087 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,088 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,088 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,088 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,088 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,088 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,088 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,088 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,088 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,088 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,088 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,088 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,088 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,089 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,089 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,089 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:20:20,099 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-07-13 18:20:20,121 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-13 18:20:20,134 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-13 18:20:20,134 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-13 18:20:20,134 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-13 18:20:20,134 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-13 18:20:20,134 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-13 18:20:20,134 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-13 18:20:20,134 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-13 18:20:20,135 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == t1Thread1of1ForFork0======== [2021-07-13 18:20:20,143 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 149 places, 154 transitions, 330 flow [2021-07-13 18:20:20,336 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 7817 states, 7815 states have (on average 2.8632117722328854) internal successors, (22376), 7816 states have internal predecessors, (22376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:20:20,358 INFO L276 IsEmpty]: Start isEmpty. Operand has 7817 states, 7815 states have (on average 2.8632117722328854) internal successors, (22376), 7816 states have internal predecessors, (22376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:20:20,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-07-13 18:20:20,373 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:20:20,374 INFO L508 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] [2021-07-13 18:20:20,374 INFO L430 AbstractCegarLoop]: === Iteration 1 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:20:20,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:20:20,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1276574419, now seen corresponding path program 1 times [2021-07-13 18:20:20,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:20:20,383 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150126162] [2021-07-13 18:20:20,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:20:20,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:20:20,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:20:20,639 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:20:20,639 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150126162] [2021-07-13 18:20:20,640 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150126162] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:20:20,640 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:20:20,640 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-13 18:20:20,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831135264] [2021-07-13 18:20:20,643 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-13 18:20:20,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:20:20,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-13 18:20:20,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 18:20:20,669 INFO L87 Difference]: Start difference. First operand has 7817 states, 7815 states have (on average 2.8632117722328854) internal successors, (22376), 7816 states have internal predecessors, (22376), 0 states have call successors, (0), 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) [2021-07-13 18:20:20,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:20:20,798 INFO L93 Difference]: Finished difference Result 10822 states and 29694 transitions. [2021-07-13 18:20:20,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-13 18:20:20,805 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 [2021-07-13 18:20:20,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:20:20,895 INFO L225 Difference]: With dead ends: 10822 [2021-07-13 18:20:20,896 INFO L226 Difference]: Without dead ends: 10552 [2021-07-13 18:20:20,897 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 18:20:20,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10552 states. [2021-07-13 18:20:21,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10552 to 10228. [2021-07-13 18:20:21,251 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) [2021-07-13 18:20:21,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10228 states to 10228 states and 28216 transitions. [2021-07-13 18:20:21,287 INFO L78 Accepts]: Start accepts. Automaton has 10228 states and 28216 transitions. Word has length 58 [2021-07-13 18:20:21,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:20:21,288 INFO L482 AbstractCegarLoop]: Abstraction has 10228 states and 28216 transitions. [2021-07-13 18:20:21,289 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) [2021-07-13 18:20:21,289 INFO L276 IsEmpty]: Start isEmpty. Operand 10228 states and 28216 transitions. [2021-07-13 18:20:21,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-07-13 18:20:21,295 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:20:21,295 INFO L508 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] [2021-07-13 18:20:21,295 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-13 18:20:21,296 INFO L430 AbstractCegarLoop]: === Iteration 2 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:20:21,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:20:21,297 INFO L82 PathProgramCache]: Analyzing trace with hash 503754833, now seen corresponding path program 1 times [2021-07-13 18:20:21,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:20:21,298 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001451933] [2021-07-13 18:20:21,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:20:21,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:20:21,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:20:21,371 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:20:21,371 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001451933] [2021-07-13 18:20:21,371 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001451933] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:20:21,371 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:20:21,371 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 18:20:21,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740198483] [2021-07-13 18:20:21,372 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-13 18:20:21,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:20:21,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-13 18:20:21,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-13 18:20:21,373 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) [2021-07-13 18:20:21,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:20:21,467 INFO L93 Difference]: Finished difference Result 15016 states and 41364 transitions. [2021-07-13 18:20:21,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-13 18:20:21,468 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 [2021-07-13 18:20:21,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:20:21,517 INFO L225 Difference]: With dead ends: 15016 [2021-07-13 18:20:21,518 INFO L226 Difference]: Without dead ends: 15016 [2021-07-13 18:20:21,518 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 18:20:21,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15016 states. [2021-07-13 18:20:21,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15016 to 10984. [2021-07-13 18:20:21,870 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) [2021-07-13 18:20:21,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10984 states to 10984 states and 30292 transitions. [2021-07-13 18:20:21,908 INFO L78 Accepts]: Start accepts. Automaton has 10984 states and 30292 transitions. Word has length 67 [2021-07-13 18:20:21,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:20:21,908 INFO L482 AbstractCegarLoop]: Abstraction has 10984 states and 30292 transitions. [2021-07-13 18:20:21,908 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) [2021-07-13 18:20:21,908 INFO L276 IsEmpty]: Start isEmpty. Operand 10984 states and 30292 transitions. [2021-07-13 18:20:21,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-07-13 18:20:21,917 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:20:21,917 INFO L508 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] [2021-07-13 18:20:21,918 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-13 18:20:21,918 INFO L430 AbstractCegarLoop]: === Iteration 3 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:20:21,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:20:21,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1242964654, now seen corresponding path program 1 times [2021-07-13 18:20:21,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:20:21,924 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342720823] [2021-07-13 18:20:21,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:20:21,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:20:22,060 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:20:22,060 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:20:22,060 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342720823] [2021-07-13 18:20:22,060 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342720823] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:20:22,060 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402983078] [2021-07-13 18:20:22,061 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 [2021-07-13 18:20:22,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:20:22,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 4 conjunts are in the unsatisfiable core [2021-07-13 18:20:22,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:20:22,424 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:20:22,424 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402983078] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:20:22,424 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:20:22,425 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-07-13 18:20:22,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196335647] [2021-07-13 18:20:22,425 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-13 18:20:22,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:20:22,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-13 18:20:22,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-07-13 18:20:22,426 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) [2021-07-13 18:20:22,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:20:22,625 INFO L93 Difference]: Finished difference Result 18559 states and 50925 transitions. [2021-07-13 18:20:22,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-13 18:20:22,626 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 [2021-07-13 18:20:22,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:20:22,715 INFO L225 Difference]: With dead ends: 18559 [2021-07-13 18:20:22,715 INFO L226 Difference]: Without dead ends: 18559 [2021-07-13 18:20:22,715 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 47.4ms TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2021-07-13 18:20:22,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18559 states. [2021-07-13 18:20:23,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18559 to 14608. [2021-07-13 18:20:23,035 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) [2021-07-13 18:20:23,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14608 states to 14608 states and 40205 transitions. [2021-07-13 18:20:23,067 INFO L78 Accepts]: Start accepts. Automaton has 14608 states and 40205 transitions. Word has length 92 [2021-07-13 18:20:23,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:20:23,068 INFO L482 AbstractCegarLoop]: Abstraction has 14608 states and 40205 transitions. [2021-07-13 18:20:23,068 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) [2021-07-13 18:20:23,068 INFO L276 IsEmpty]: Start isEmpty. Operand 14608 states and 40205 transitions. [2021-07-13 18:20:23,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-07-13 18:20:23,088 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:20:23,088 INFO L508 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] [2021-07-13 18:20:23,307 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-07-13 18:20:23,308 INFO L430 AbstractCegarLoop]: === Iteration 4 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:20:23,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:20:23,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1421466827, now seen corresponding path program 1 times [2021-07-13 18:20:23,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:20:23,309 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968596716] [2021-07-13 18:20:23,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:20:23,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:20:23,355 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-07-13 18:20:23,356 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:20:23,356 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968596716] [2021-07-13 18:20:23,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968596716] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:20:23,356 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:20:23,356 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-13 18:20:23,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369837315] [2021-07-13 18:20:23,356 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-13 18:20:23,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:20:23,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-13 18:20:23,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 18:20:23,357 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) [2021-07-13 18:20:23,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:20:23,388 INFO L93 Difference]: Finished difference Result 6200 states and 15967 transitions. [2021-07-13 18:20:23,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-13 18:20:23,388 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 [2021-07-13 18:20:23,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:20:23,403 INFO L225 Difference]: With dead ends: 6200 [2021-07-13 18:20:23,403 INFO L226 Difference]: Without dead ends: 6080 [2021-07-13 18:20:23,403 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 18:20:23,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6080 states. [2021-07-13 18:20:23,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6080 to 5880. [2021-07-13 18:20:23,486 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) [2021-07-13 18:20:23,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5880 states to 5880 states and 15111 transitions. [2021-07-13 18:20:23,497 INFO L78 Accepts]: Start accepts. Automaton has 5880 states and 15111 transitions. Word has length 113 [2021-07-13 18:20:23,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:20:23,498 INFO L482 AbstractCegarLoop]: Abstraction has 5880 states and 15111 transitions. [2021-07-13 18:20:23,498 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) [2021-07-13 18:20:23,498 INFO L276 IsEmpty]: Start isEmpty. Operand 5880 states and 15111 transitions. [2021-07-13 18:20:23,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-07-13 18:20:23,511 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:20:23,512 INFO L508 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] [2021-07-13 18:20:23,512 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-13 18:20:23,512 INFO L430 AbstractCegarLoop]: === Iteration 5 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:20:23,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:20:23,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1978965999, now seen corresponding path program 2 times [2021-07-13 18:20:23,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:20:23,513 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517275673] [2021-07-13 18:20:23,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:20:23,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:20:23,658 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 6 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:20:23,658 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:20:23,658 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517275673] [2021-07-13 18:20:23,658 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517275673] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:20:23,658 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153294477] [2021-07-13 18:20:23,659 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 [2021-07-13 18:20:23,763 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-13 18:20:23,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:20:23,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 6 conjunts are in the unsatisfiable core [2021-07-13 18:20:23,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:20:23,958 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 6 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:20:23,958 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153294477] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:20:23,958 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:20:23,958 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-07-13 18:20:23,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877409411] [2021-07-13 18:20:23,959 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-13 18:20:23,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:20:23,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-13 18:20:23,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-07-13 18:20:23,960 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) [2021-07-13 18:20:24,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:20:24,086 INFO L93 Difference]: Finished difference Result 9599 states and 24729 transitions. [2021-07-13 18:20:24,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-13 18:20:24,087 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 [2021-07-13 18:20:24,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:20:24,106 INFO L225 Difference]: With dead ends: 9599 [2021-07-13 18:20:24,107 INFO L226 Difference]: Without dead ends: 9599 [2021-07-13 18:20:24,107 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 55.9ms TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2021-07-13 18:20:24,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9599 states. [2021-07-13 18:20:24,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9599 to 7682. [2021-07-13 18:20:24,256 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) [2021-07-13 18:20:24,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7682 states to 7682 states and 19721 transitions. [2021-07-13 18:20:24,270 INFO L78 Accepts]: Start accepts. Automaton has 7682 states and 19721 transitions. Word has length 126 [2021-07-13 18:20:24,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:20:24,270 INFO L482 AbstractCegarLoop]: Abstraction has 7682 states and 19721 transitions. [2021-07-13 18:20:24,270 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) [2021-07-13 18:20:24,270 INFO L276 IsEmpty]: Start isEmpty. Operand 7682 states and 19721 transitions. [2021-07-13 18:20:24,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-07-13 18:20:24,282 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:20:24,282 INFO L508 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] [2021-07-13 18:20:24,495 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:20:24,495 INFO L430 AbstractCegarLoop]: === Iteration 6 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:20:24,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:20:24,496 INFO L82 PathProgramCache]: Analyzing trace with hash -532868693, now seen corresponding path program 1 times [2021-07-13 18:20:24,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:20:24,496 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391812133] [2021-07-13 18:20:24,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:20:24,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:20:24,623 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:20:24,623 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:20:24,623 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391812133] [2021-07-13 18:20:24,624 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391812133] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:20:24,624 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702066885] [2021-07-13 18:20:24,624 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 [2021-07-13 18:20:24,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:20:24,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 6 conjunts are in the unsatisfiable core [2021-07-13 18:20:24,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:20:24,907 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-07-13 18:20:24,907 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702066885] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:20:24,907 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-07-13 18:20:24,907 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 8 [2021-07-13 18:20:24,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619272558] [2021-07-13 18:20:24,908 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-13 18:20:24,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:20:24,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-13 18:20:24,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-07-13 18:20:24,909 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) [2021-07-13 18:20:25,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:20:25,004 INFO L93 Difference]: Finished difference Result 10337 states and 26617 transitions. [2021-07-13 18:20:25,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-13 18:20:25,005 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 [2021-07-13 18:20:25,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:20:25,060 INFO L225 Difference]: With dead ends: 10337 [2021-07-13 18:20:25,060 INFO L226 Difference]: Without dead ends: 10337 [2021-07-13 18:20:25,060 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 51.4ms TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-07-13 18:20:25,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10337 states. [2021-07-13 18:20:25,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10337 to 8942. [2021-07-13 18:20:25,174 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) [2021-07-13 18:20:25,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8942 states to 8942 states and 23170 transitions. [2021-07-13 18:20:25,196 INFO L78 Accepts]: Start accepts. Automaton has 8942 states and 23170 transitions. Word has length 127 [2021-07-13 18:20:25,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:20:25,196 INFO L482 AbstractCegarLoop]: Abstraction has 8942 states and 23170 transitions. [2021-07-13 18:20:25,196 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) [2021-07-13 18:20:25,197 INFO L276 IsEmpty]: Start isEmpty. Operand 8942 states and 23170 transitions. [2021-07-13 18:20:25,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-07-13 18:20:25,214 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:20:25,214 INFO L508 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] [2021-07-13 18:20:25,432 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:20:25,433 INFO L430 AbstractCegarLoop]: === Iteration 7 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:20:25,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:20:25,433 INFO L82 PathProgramCache]: Analyzing trace with hash 486313200, now seen corresponding path program 3 times [2021-07-13 18:20:25,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:20:25,434 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3820086] [2021-07-13 18:20:25,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:20:25,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:20:25,512 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 9 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:20:25,512 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:20:25,512 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3820086] [2021-07-13 18:20:25,512 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3820086] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:20:25,512 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378203674] [2021-07-13 18:20:25,512 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 [2021-07-13 18:20:25,618 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-07-13 18:20:25,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:20:25,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 8 conjunts are in the unsatisfiable core [2021-07-13 18:20:25,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:20:25,792 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 9 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:20:25,792 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378203674] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:20:25,792 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:20:25,793 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-07-13 18:20:25,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179579395] [2021-07-13 18:20:25,793 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-13 18:20:25,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:20:25,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-13 18:20:25,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-07-13 18:20:25,794 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) [2021-07-13 18:20:25,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:20:25,949 INFO L93 Difference]: Finished difference Result 13941 states and 35975 transitions. [2021-07-13 18:20:25,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-13 18:20:25,950 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 [2021-07-13 18:20:25,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:20:25,979 INFO L225 Difference]: With dead ends: 13941 [2021-07-13 18:20:25,979 INFO L226 Difference]: Without dead ends: 13941 [2021-07-13 18:20:25,980 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 71.5ms TimeCoverageRelationStatistics Valid=121, Invalid=221, Unknown=0, NotChecked=0, Total=342 [2021-07-13 18:20:26,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13941 states. [2021-07-13 18:20:26,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13941 to 10744. [2021-07-13 18:20:26,170 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) [2021-07-13 18:20:26,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10744 states to 10744 states and 27780 transitions. [2021-07-13 18:20:26,192 INFO L78 Accepts]: Start accepts. Automaton has 10744 states and 27780 transitions. Word has length 160 [2021-07-13 18:20:26,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:20:26,192 INFO L482 AbstractCegarLoop]: Abstraction has 10744 states and 27780 transitions. [2021-07-13 18:20:26,192 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) [2021-07-13 18:20:26,192 INFO L276 IsEmpty]: Start isEmpty. Operand 10744 states and 27780 transitions. [2021-07-13 18:20:26,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-07-13 18:20:26,208 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:20:26,208 INFO L508 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] [2021-07-13 18:20:26,425 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:20:26,425 INFO L430 AbstractCegarLoop]: === Iteration 8 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:20:26,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:20:26,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1208875722, now seen corresponding path program 2 times [2021-07-13 18:20:26,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:20:26,426 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479581070] [2021-07-13 18:20:26,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:20:26,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:20:26,493 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 6 proven. 47 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-07-13 18:20:26,493 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:20:26,493 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479581070] [2021-07-13 18:20:26,494 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479581070] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:20:26,494 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299828089] [2021-07-13 18:20:26,494 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 [2021-07-13 18:20:26,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-13 18:20:26,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:20:26,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 8 conjunts are in the unsatisfiable core [2021-07-13 18:20:26,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:20:26,774 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 6 proven. 47 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-07-13 18:20:26,774 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299828089] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:20:26,774 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:20:26,774 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-07-13 18:20:26,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939153859] [2021-07-13 18:20:26,775 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-13 18:20:26,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:20:26,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-13 18:20:26,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-07-13 18:20:26,775 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) [2021-07-13 18:20:26,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:20:26,924 INFO L93 Difference]: Finished difference Result 15879 states and 41004 transitions. [2021-07-13 18:20:26,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-13 18:20:26,925 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 [2021-07-13 18:20:26,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:20:26,953 INFO L225 Difference]: With dead ends: 15879 [2021-07-13 18:20:26,954 INFO L226 Difference]: Without dead ends: 15879 [2021-07-13 18:20:26,954 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 59.9ms TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-07-13 18:20:26,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15879 states. [2021-07-13 18:20:27,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15879 to 12004. [2021-07-13 18:20:27,219 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) [2021-07-13 18:20:27,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12004 states to 12004 states and 31229 transitions. [2021-07-13 18:20:27,245 INFO L78 Accepts]: Start accepts. Automaton has 12004 states and 31229 transitions. Word has length 161 [2021-07-13 18:20:27,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:20:27,246 INFO L482 AbstractCegarLoop]: Abstraction has 12004 states and 31229 transitions. [2021-07-13 18:20:27,246 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) [2021-07-13 18:20:27,246 INFO L276 IsEmpty]: Start isEmpty. Operand 12004 states and 31229 transitions. [2021-07-13 18:20:27,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-07-13 18:20:27,267 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:20:27,268 INFO L508 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] [2021-07-13 18:20:27,487 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:20:27,487 INFO L430 AbstractCegarLoop]: === Iteration 9 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:20:27,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:20:27,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1386346929, now seen corresponding path program 4 times [2021-07-13 18:20:27,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:20:27,488 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815411510] [2021-07-13 18:20:27,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:20:27,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:20:27,584 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 12 proven. 264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:20:27,584 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:20:27,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815411510] [2021-07-13 18:20:27,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815411510] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:20:27,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438406049] [2021-07-13 18:20:27,585 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2021-07-13 18:20:27,676 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-13 18:20:27,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:20:27,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 10 conjunts are in the unsatisfiable core [2021-07-13 18:20:27,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:20:27,884 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 12 proven. 264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:20:27,885 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438406049] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:20:27,885 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:20:27,885 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-07-13 18:20:27,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336001283] [2021-07-13 18:20:27,885 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-07-13 18:20:27,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:20:27,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-07-13 18:20:27,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-07-13 18:20:27,886 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) [2021-07-13 18:20:28,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:20:28,072 INFO L93 Difference]: Finished difference Result 17203 states and 44584 transitions. [2021-07-13 18:20:28,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-13 18:20:28,072 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 [2021-07-13 18:20:28,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:20:28,105 INFO L225 Difference]: With dead ends: 17203 [2021-07-13 18:20:28,105 INFO L226 Difference]: Without dead ends: 17203 [2021-07-13 18:20:28,106 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 92.4ms TimeCoverageRelationStatistics Valid=176, Invalid=330, Unknown=0, NotChecked=0, Total=506 [2021-07-13 18:20:28,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17203 states. [2021-07-13 18:20:28,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17203 to 13806. [2021-07-13 18:20:28,334 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) [2021-07-13 18:20:28,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13806 states to 13806 states and 35839 transitions. [2021-07-13 18:20:28,456 INFO L78 Accepts]: Start accepts. Automaton has 13806 states and 35839 transitions. Word has length 194 [2021-07-13 18:20:28,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:20:28,456 INFO L482 AbstractCegarLoop]: Abstraction has 13806 states and 35839 transitions. [2021-07-13 18:20:28,456 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) [2021-07-13 18:20:28,457 INFO L276 IsEmpty]: Start isEmpty. Operand 13806 states and 35839 transitions. [2021-07-13 18:20:28,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-07-13 18:20:28,480 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:20:28,481 INFO L508 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] [2021-07-13 18:20:28,692 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:20:28,693 INFO L430 AbstractCegarLoop]: === Iteration 10 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:20:28,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:20:28,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1361530221, now seen corresponding path program 3 times [2021-07-13 18:20:28,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:20:28,694 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400800775] [2021-07-13 18:20:28,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:20:28,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:20:28,784 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 9 proven. 139 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-07-13 18:20:28,784 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:20:28,784 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400800775] [2021-07-13 18:20:28,784 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400800775] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:20:28,784 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188630481] [2021-07-13 18:20:28,784 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 [2021-07-13 18:20:28,917 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-07-13 18:20:28,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:20:28,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 10 conjunts are in the unsatisfiable core [2021-07-13 18:20:28,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:20:29,141 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 9 proven. 115 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-07-13 18:20:29,141 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188630481] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:20:29,141 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:20:29,141 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 10 [2021-07-13 18:20:29,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597483021] [2021-07-13 18:20:29,142 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-13 18:20:29,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:20:29,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-13 18:20:29,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-07-13 18:20:29,143 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) [2021-07-13 18:20:29,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:20:29,325 INFO L93 Difference]: Finished difference Result 17791 states and 46057 transitions. [2021-07-13 18:20:29,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-13 18:20:29,326 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 [2021-07-13 18:20:29,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:20:29,358 INFO L225 Difference]: With dead ends: 17791 [2021-07-13 18:20:29,358 INFO L226 Difference]: Without dead ends: 17791 [2021-07-13 18:20:29,358 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 64.6ms TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-07-13 18:20:29,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17791 states. [2021-07-13 18:20:29,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17791 to 13806. [2021-07-13 18:20:29,679 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) [2021-07-13 18:20:29,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13806 states to 13806 states and 35839 transitions. [2021-07-13 18:20:29,710 INFO L78 Accepts]: Start accepts. Automaton has 13806 states and 35839 transitions. Word has length 195 [2021-07-13 18:20:29,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:20:29,711 INFO L482 AbstractCegarLoop]: Abstraction has 13806 states and 35839 transitions. [2021-07-13 18:20:29,711 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) [2021-07-13 18:20:29,711 INFO L276 IsEmpty]: Start isEmpty. Operand 13806 states and 35839 transitions. [2021-07-13 18:20:29,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-07-13 18:20:29,731 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:20:29,731 INFO L508 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] [2021-07-13 18:20:29,951 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-07-13 18:20:29,954 INFO L430 AbstractCegarLoop]: === Iteration 11 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:20:29,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:20:29,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1990450217, now seen corresponding path program 4 times [2021-07-13 18:20:29,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:20:29,954 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461811620] [2021-07-13 18:20:29,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:20:29,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:20:30,039 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 9 proven. 130 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-07-13 18:20:30,040 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:20:30,040 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461811620] [2021-07-13 18:20:30,040 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461811620] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:20:30,040 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966622150] [2021-07-13 18:20:30,040 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2021-07-13 18:20:30,124 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-13 18:20:30,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:20:30,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 10 conjunts are in the unsatisfiable core [2021-07-13 18:20:30,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:20:30,340 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 9 proven. 130 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-07-13 18:20:30,340 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966622150] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:20:30,340 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:20:30,340 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-07-13 18:20:30,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326620025] [2021-07-13 18:20:30,341 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-13 18:20:30,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:20:30,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-13 18:20:30,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-07-13 18:20:30,342 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) [2021-07-13 18:20:30,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:20:30,559 INFO L93 Difference]: Finished difference Result 19141 states and 49613 transitions. [2021-07-13 18:20:30,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-13 18:20:30,559 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 [2021-07-13 18:20:30,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:20:30,594 INFO L225 Difference]: With dead ends: 19141 [2021-07-13 18:20:30,594 INFO L226 Difference]: Without dead ends: 19141 [2021-07-13 18:20:30,595 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 96.9ms TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2021-07-13 18:20:30,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19141 states. [2021-07-13 18:20:30,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19141 to 13806. [2021-07-13 18:20:30,874 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) [2021-07-13 18:20:30,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13806 states to 13806 states and 35839 transitions. [2021-07-13 18:20:30,900 INFO L78 Accepts]: Start accepts. Automaton has 13806 states and 35839 transitions. Word has length 195 [2021-07-13 18:20:30,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:20:30,901 INFO L482 AbstractCegarLoop]: Abstraction has 13806 states and 35839 transitions. [2021-07-13 18:20:30,901 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) [2021-07-13 18:20:30,901 INFO L276 IsEmpty]: Start isEmpty. Operand 13806 states and 35839 transitions. [2021-07-13 18:20:30,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-07-13 18:20:30,919 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:20:30,919 INFO L508 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] [2021-07-13 18:20:31,120 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-07-13 18:20:31,121 INFO L430 AbstractCegarLoop]: === Iteration 12 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:20:31,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:20:31,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1865452715, now seen corresponding path program 1 times [2021-07-13 18:20:31,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:20:31,121 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983545135] [2021-07-13 18:20:31,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:20:31,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:20:31,212 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 9 proven. 148 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-07-13 18:20:31,212 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:20:31,212 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983545135] [2021-07-13 18:20:31,212 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983545135] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:20:31,212 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006799844] [2021-07-13 18:20:31,213 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 [2021-07-13 18:20:31,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:20:31,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 12 conjunts are in the unsatisfiable core [2021-07-13 18:20:31,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:20:31,566 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 9 proven. 123 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-07-13 18:20:31,566 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006799844] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:20:31,566 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:20:31,566 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 11 [2021-07-13 18:20:31,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725885678] [2021-07-13 18:20:31,567 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-13 18:20:31,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:20:31,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-13 18:20:31,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-07-13 18:20:31,567 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) [2021-07-13 18:20:31,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:20:31,859 INFO L93 Difference]: Finished difference Result 25001 states and 64922 transitions. [2021-07-13 18:20:31,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-13 18:20:31,860 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 [2021-07-13 18:20:31,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:20:31,904 INFO L225 Difference]: With dead ends: 25001 [2021-07-13 18:20:31,904 INFO L226 Difference]: Without dead ends: 25001 [2021-07-13 18:20:31,905 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 77.9ms TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2021-07-13 18:20:31,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25001 states. [2021-07-13 18:20:32,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25001 to 14966. [2021-07-13 18:20:32,127 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) [2021-07-13 18:20:32,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14966 states to 14966 states and 38993 transitions. [2021-07-13 18:20:32,154 INFO L78 Accepts]: Start accepts. Automaton has 14966 states and 38993 transitions. Word has length 224 [2021-07-13 18:20:32,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:20:32,154 INFO L482 AbstractCegarLoop]: Abstraction has 14966 states and 38993 transitions. [2021-07-13 18:20:32,154 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) [2021-07-13 18:20:32,154 INFO L276 IsEmpty]: Start isEmpty. Operand 14966 states and 38993 transitions. [2021-07-13 18:20:32,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-07-13 18:20:32,173 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:20:32,173 INFO L508 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] [2021-07-13 18:20:32,389 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:20:32,389 INFO L430 AbstractCegarLoop]: === Iteration 13 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:20:32,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:20:32,389 INFO L82 PathProgramCache]: Analyzing trace with hash -648743374, now seen corresponding path program 5 times [2021-07-13 18:20:32,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:20:32,390 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706594356] [2021-07-13 18:20:32,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:20:32,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:20:32,480 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 297 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:20:32,481 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:20:32,481 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706594356] [2021-07-13 18:20:32,481 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706594356] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:20:32,481 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110246204] [2021-07-13 18:20:32,481 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 [2021-07-13 18:20:32,627 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-07-13 18:20:32,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:20:32,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 12 conjunts are in the unsatisfiable core [2021-07-13 18:20:32,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:20:32,841 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 430 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:20:32,842 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110246204] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:20:32,842 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-07-13 18:20:32,842 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 15 [2021-07-13 18:20:32,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688738449] [2021-07-13 18:20:32,842 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-07-13 18:20:32,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:20:32,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-07-13 18:20:32,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-07-13 18:20:32,843 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) [2021-07-13 18:20:33,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:20:33,172 INFO L93 Difference]: Finished difference Result 39019 states and 101754 transitions. [2021-07-13 18:20:33,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-13 18:20:33,173 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 [2021-07-13 18:20:33,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:20:33,190 INFO L225 Difference]: With dead ends: 39019 [2021-07-13 18:20:33,190 INFO L226 Difference]: Without dead ends: 11420 [2021-07-13 18:20:33,190 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 180.0ms TimeCoverageRelationStatistics Valid=184, Invalid=416, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:20:33,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11420 states. [2021-07-13 18:20:33,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11420 to 11420. [2021-07-13 18:20:33,356 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) [2021-07-13 18:20:33,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11420 states to 11420 states and 29073 transitions. [2021-07-13 18:20:33,378 INFO L78 Accepts]: Start accepts. Automaton has 11420 states and 29073 transitions. Word has length 228 [2021-07-13 18:20:33,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:20:33,379 INFO L482 AbstractCegarLoop]: Abstraction has 11420 states and 29073 transitions. [2021-07-13 18:20:33,379 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) [2021-07-13 18:20:33,379 INFO L276 IsEmpty]: Start isEmpty. Operand 11420 states and 29073 transitions. [2021-07-13 18:20:33,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-07-13 18:20:33,394 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:20:33,394 INFO L508 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] [2021-07-13 18:20:33,608 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:20:33,609 INFO L430 AbstractCegarLoop]: === Iteration 14 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:20:33,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:20:33,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1007527186, now seen corresponding path program 5 times [2021-07-13 18:20:33,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:20:33,610 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3944800] [2021-07-13 18:20:33,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:20:33,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:20:33,709 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 12 proven. 256 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-07-13 18:20:33,710 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:20:33,710 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3944800] [2021-07-13 18:20:33,710 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3944800] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:20:33,710 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488263634] [2021-07-13 18:20:33,710 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 [2021-07-13 18:20:33,913 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-07-13 18:20:33,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:20:33,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 12 conjunts are in the unsatisfiable core [2021-07-13 18:20:33,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:20:34,150 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 12 proven. 232 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-07-13 18:20:34,150 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488263634] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:20:34,150 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:20:34,150 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 12 [2021-07-13 18:20:34,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300422537] [2021-07-13 18:20:34,151 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-13 18:20:34,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:20:34,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-13 18:20:34,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-07-13 18:20:34,152 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) [2021-07-13 18:20:34,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:20:34,349 INFO L93 Difference]: Finished difference Result 14630 states and 37308 transitions. [2021-07-13 18:20:34,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-13 18:20:34,350 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 [2021-07-13 18:20:34,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:20:34,370 INFO L225 Difference]: With dead ends: 14630 [2021-07-13 18:20:34,371 INFO L226 Difference]: Without dead ends: 12570 [2021-07-13 18:20:34,371 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 113.1ms TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2021-07-13 18:20:34,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12570 states. [2021-07-13 18:20:34,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12570 to 11010. [2021-07-13 18:20:34,550 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) [2021-07-13 18:20:34,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11010 states to 11010 states and 28002 transitions. [2021-07-13 18:20:34,570 INFO L78 Accepts]: Start accepts. Automaton has 11010 states and 28002 transitions. Word has length 229 [2021-07-13 18:20:34,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:20:34,570 INFO L482 AbstractCegarLoop]: Abstraction has 11010 states and 28002 transitions. [2021-07-13 18:20:34,571 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) [2021-07-13 18:20:34,571 INFO L276 IsEmpty]: Start isEmpty. Operand 11010 states and 28002 transitions. [2021-07-13 18:20:34,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-07-13 18:20:34,583 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:20:34,583 INFO L508 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] [2021-07-13 18:20:34,783 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-07-13 18:20:34,784 INFO L430 AbstractCegarLoop]: === Iteration 15 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:20:34,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:20:34,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1165235980, now seen corresponding path program 6 times [2021-07-13 18:20:34,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:20:34,784 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449104509] [2021-07-13 18:20:34,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:20:34,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:20:34,855 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 12 proven. 230 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-07-13 18:20:34,855 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:20:34,855 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449104509] [2021-07-13 18:20:34,855 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449104509] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:20:34,855 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783640876] [2021-07-13 18:20:34,855 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 [2021-07-13 18:20:35,000 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-07-13 18:20:35,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:20:35,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 12 conjunts are in the unsatisfiable core [2021-07-13 18:20:35,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:20:35,239 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 12 proven. 230 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-07-13 18:20:35,240 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783640876] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:20:35,240 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:20:35,240 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-07-13 18:20:35,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141410797] [2021-07-13 18:20:35,240 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-13 18:20:35,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:20:35,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-13 18:20:35,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-07-13 18:20:35,241 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) [2021-07-13 18:20:35,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:20:35,377 INFO L93 Difference]: Finished difference Result 11840 states and 30117 transitions. [2021-07-13 18:20:35,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-13 18:20:35,377 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 [2021-07-13 18:20:35,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:20:35,394 INFO L225 Difference]: With dead ends: 11840 [2021-07-13 18:20:35,394 INFO L226 Difference]: Without dead ends: 10290 [2021-07-13 18:20:35,394 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 71.3ms TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2021-07-13 18:20:35,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10290 states. [2021-07-13 18:20:35,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10290 to 8630. [2021-07-13 18:20:35,509 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) [2021-07-13 18:20:35,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8630 states to 8630 states and 21882 transitions. [2021-07-13 18:20:35,523 INFO L78 Accepts]: Start accepts. Automaton has 8630 states and 21882 transitions. Word has length 229 [2021-07-13 18:20:35,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:20:35,524 INFO L482 AbstractCegarLoop]: Abstraction has 8630 states and 21882 transitions. [2021-07-13 18:20:35,524 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) [2021-07-13 18:20:35,524 INFO L276 IsEmpty]: Start isEmpty. Operand 8630 states and 21882 transitions. [2021-07-13 18:20:35,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-07-13 18:20:35,534 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:20:35,534 INFO L508 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] [2021-07-13 18:20:35,735 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-07-13 18:20:35,735 INFO L430 AbstractCegarLoop]: === Iteration 16 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:20:35,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:20:35,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1794155976, now seen corresponding path program 7 times [2021-07-13 18:20:35,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:20:35,736 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666680202] [2021-07-13 18:20:35,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:20:35,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:20:35,821 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 12 proven. 247 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-07-13 18:20:35,821 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:20:35,821 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666680202] [2021-07-13 18:20:35,821 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666680202] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:20:35,821 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53486169] [2021-07-13 18:20:35,821 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 [2021-07-13 18:20:35,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:20:35,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 12 conjunts are in the unsatisfiable core [2021-07-13 18:20:35,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:20:36,192 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 12 proven. 247 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-07-13 18:20:36,193 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53486169] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:20:36,193 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:20:36,193 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-07-13 18:20:36,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114462821] [2021-07-13 18:20:36,194 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-07-13 18:20:36,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:20:36,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-07-13 18:20:36,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-07-13 18:20:36,195 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) [2021-07-13 18:20:36,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:20:36,419 INFO L93 Difference]: Finished difference Result 12520 states and 31800 transitions. [2021-07-13 18:20:36,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-07-13 18:20:36,419 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 [2021-07-13 18:20:36,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:20:36,431 INFO L225 Difference]: With dead ends: 12520 [2021-07-13 18:20:36,431 INFO L226 Difference]: Without dead ends: 8626 [2021-07-13 18:20:36,432 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 115.9ms TimeCoverageRelationStatistics Valid=169, Invalid=481, Unknown=0, NotChecked=0, Total=650 [2021-07-13 18:20:36,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8626 states. [2021-07-13 18:20:36,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8626 to 7406. [2021-07-13 18:20:36,520 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) [2021-07-13 18:20:36,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7406 states to 7406 states and 18802 transitions. [2021-07-13 18:20:36,530 INFO L78 Accepts]: Start accepts. Automaton has 7406 states and 18802 transitions. Word has length 229 [2021-07-13 18:20:36,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:20:36,530 INFO L482 AbstractCegarLoop]: Abstraction has 7406 states and 18802 transitions. [2021-07-13 18:20:36,530 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) [2021-07-13 18:20:36,530 INFO L276 IsEmpty]: Start isEmpty. Operand 7406 states and 18802 transitions. [2021-07-13 18:20:36,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-07-13 18:20:36,539 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:20:36,539 INFO L508 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] [2021-07-13 18:20:36,752 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-07-13 18:20:36,753 INFO L430 AbstractCegarLoop]: === Iteration 17 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:20:36,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:20:36,753 INFO L82 PathProgramCache]: Analyzing trace with hash 2120398282, now seen corresponding path program 2 times [2021-07-13 18:20:36,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:20:36,753 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358835225] [2021-07-13 18:20:36,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:20:36,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:20:36,881 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 12 proven. 265 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-07-13 18:20:36,881 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:20:36,881 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358835225] [2021-07-13 18:20:36,882 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358835225] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:20:36,882 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260420908] [2021-07-13 18:20:36,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2021-07-13 18:20:37,003 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-13 18:20:37,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:20:37,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 14 conjunts are in the unsatisfiable core [2021-07-13 18:20:37,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:20:37,240 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 12 proven. 240 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-07-13 18:20:37,240 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260420908] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:20:37,240 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:20:37,240 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 13 [2021-07-13 18:20:37,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600625457] [2021-07-13 18:20:37,241 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-07-13 18:20:37,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:20:37,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-07-13 18:20:37,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-07-13 18:20:37,241 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) [2021-07-13 18:20:37,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:20:37,395 INFO L93 Difference]: Finished difference Result 10176 states and 25864 transitions. [2021-07-13 18:20:37,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-07-13 18:20:37,396 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 [2021-07-13 18:20:37,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:20:37,404 INFO L225 Difference]: With dead ends: 10176 [2021-07-13 18:20:37,405 INFO L226 Difference]: Without dead ends: 6246 [2021-07-13 18:20:37,405 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 101.2ms TimeCoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:20:37,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6246 states. [2021-07-13 18:20:37,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6246 to 6246. [2021-07-13 18:20:37,473 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) [2021-07-13 18:20:37,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6246 states to 6246 states and 15824 transitions. [2021-07-13 18:20:37,482 INFO L78 Accepts]: Start accepts. Automaton has 6246 states and 15824 transitions. Word has length 258 [2021-07-13 18:20:37,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:20:37,482 INFO L482 AbstractCegarLoop]: Abstraction has 6246 states and 15824 transitions. [2021-07-13 18:20:37,483 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) [2021-07-13 18:20:37,483 INFO L276 IsEmpty]: Start isEmpty. Operand 6246 states and 15824 transitions. [2021-07-13 18:20:37,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-07-13 18:20:37,489 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:20:37,489 INFO L508 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] [2021-07-13 18:20:37,690 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:20:37,691 INFO L430 AbstractCegarLoop]: === Iteration 18 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:20:37,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:20:37,691 INFO L82 PathProgramCache]: Analyzing trace with hash -329057428, now seen corresponding path program 3 times [2021-07-13 18:20:37,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:20:37,691 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012265231] [2021-07-13 18:20:37,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:20:37,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:20:37,779 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 12 proven. 239 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-07-13 18:20:37,780 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:20:37,780 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012265231] [2021-07-13 18:20:37,780 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012265231] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:20:37,780 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557807101] [2021-07-13 18:20:37,780 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 [2021-07-13 18:20:37,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-07-13 18:20:37,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:20:37,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 11 conjunts are in the unsatisfiable core [2021-07-13 18:20:37,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:20:38,118 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-07-13 18:20:38,119 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557807101] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:20:38,119 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-07-13 18:20:38,119 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2021-07-13 18:20:38,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184823659] [2021-07-13 18:20:38,119 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-13 18:20:38,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:20:38,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-13 18:20:38,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-07-13 18:20:38,120 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) [2021-07-13 18:20:38,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:20:38,220 INFO L93 Difference]: Finished difference Result 7556 states and 19163 transitions. [2021-07-13 18:20:38,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-13 18:20:38,220 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 [2021-07-13 18:20:38,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:20:38,229 INFO L225 Difference]: With dead ends: 7556 [2021-07-13 18:20:38,229 INFO L226 Difference]: Without dead ends: 7026 [2021-07-13 18:20:38,230 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 102.6ms TimeCoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2021-07-13 18:20:38,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7026 states. [2021-07-13 18:20:38,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7026 to 6826. [2021-07-13 18:20:38,319 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) [2021-07-13 18:20:38,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6826 states to 6826 states and 17303 transitions. [2021-07-13 18:20:38,332 INFO L78 Accepts]: Start accepts. Automaton has 6826 states and 17303 transitions. Word has length 258 [2021-07-13 18:20:38,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:20:38,332 INFO L482 AbstractCegarLoop]: Abstraction has 6826 states and 17303 transitions. [2021-07-13 18:20:38,332 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) [2021-07-13 18:20:38,332 INFO L276 IsEmpty]: Start isEmpty. Operand 6826 states and 17303 transitions. [2021-07-13 18:20:38,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-07-13 18:20:38,341 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:20:38,341 INFO L508 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] [2021-07-13 18:20:38,558 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-07-13 18:20:38,558 INFO L430 AbstractCegarLoop]: === Iteration 19 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:20:38,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:20:38,559 INFO L82 PathProgramCache]: Analyzing trace with hash -552568496, now seen corresponding path program 4 times [2021-07-13 18:20:38,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:20:38,559 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997808180] [2021-07-13 18:20:38,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:20:38,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:20:38,720 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 51 proven. 216 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-07-13 18:20:38,721 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:20:38,721 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997808180] [2021-07-13 18:20:38,721 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997808180] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:20:38,721 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171001661] [2021-07-13 18:20:38,721 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 [2021-07-13 18:20:38,893 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-13 18:20:38,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:20:38,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 16 conjunts are in the unsatisfiable core [2021-07-13 18:20:38,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:20:39,158 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 51 proven. 216 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-07-13 18:20:39,158 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171001661] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:20:39,158 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:20:39,158 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-07-13 18:20:39,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211656456] [2021-07-13 18:20:39,159 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-07-13 18:20:39,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:20:39,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-07-13 18:20:39,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-07-13 18:20:39,160 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) [2021-07-13 18:20:39,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:20:39,293 INFO L93 Difference]: Finished difference Result 6746 states and 17093 transitions. [2021-07-13 18:20:39,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-13 18:20:39,294 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 [2021-07-13 18:20:39,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:20:39,294 INFO L225 Difference]: With dead ends: 6746 [2021-07-13 18:20:39,294 INFO L226 Difference]: Without dead ends: 0 [2021-07-13 18:20:39,295 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 89.0ms TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2021-07-13 18:20:39,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-13 18:20:39,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-13 18:20:39,295 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) [2021-07-13 18:20:39,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-13 18:20:39,295 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 287 [2021-07-13 18:20:39,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:20:39,295 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-13 18:20:39,295 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) [2021-07-13 18:20:39,295 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-13 18:20:39,295 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-13 18:20:39,513 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:20:39,513 INFO L301 ceAbstractionStarter]: Result for error location t1Thread1of1ForFork0 was SAFE (1/3) [2021-07-13 18:20:39,515 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-07-13 18:20:39,515 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-13 18:20:39,515 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-13 18:20:39,515 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-13 18:20:39,515 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-13 18:20:39,515 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-13 18:20:39,515 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-13 18:20:39,515 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-13 18:20:39,515 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-13 18:20:39,517 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 149 places, 154 transitions, 330 flow [2021-07-13 18:20:39,522 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 320 states, 318 states have (on average 1.8364779874213837) internal successors, (584), 319 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:20:39,522 INFO L276 IsEmpty]: Start isEmpty. Operand has 320 states, 318 states have (on average 1.8364779874213837) internal successors, (584), 319 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:20:39,523 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-13 18:20:39,523 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (2/3) [2021-07-13 18:20:39,523 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-13 18:20:39,524 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-13 18:20:39,524 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-13 18:20:39,524 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-13 18:20:39,524 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-13 18:20:39,524 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-13 18:20:39,524 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-13 18:20:39,524 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-13 18:20:39,524 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == t2Thread1of1ForFork1======== [2021-07-13 18:20:39,525 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 149 places, 154 transitions, 330 flow [2021-07-13 18:20:39,637 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 7730 states, 7728 states have (on average 2.8619306418219463) internal successors, (22117), 7729 states have internal predecessors, (22117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:20:39,648 INFO L276 IsEmpty]: Start isEmpty. Operand has 7730 states, 7728 states have (on average 2.8619306418219463) internal successors, (22117), 7729 states have internal predecessors, (22117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:20:39,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-07-13 18:20:39,653 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:20:39,653 INFO L508 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] [2021-07-13 18:20:39,653 INFO L430 AbstractCegarLoop]: === Iteration 1 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:20:39,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:20:39,653 INFO L82 PathProgramCache]: Analyzing trace with hash -222896259, now seen corresponding path program 1 times [2021-07-13 18:20:39,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:20:39,654 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646083786] [2021-07-13 18:20:39,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:20:39,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:20:39,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:20:39,671 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:20:39,671 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646083786] [2021-07-13 18:20:39,671 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646083786] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:20:39,671 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:20:39,671 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-13 18:20:39,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781393070] [2021-07-13 18:20:39,672 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-13 18:20:39,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:20:39,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-13 18:20:39,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 18:20:39,683 INFO L87 Difference]: Start difference. First operand has 7730 states, 7728 states have (on average 2.8619306418219463) internal successors, (22117), 7729 states have internal predecessors, (22117), 0 states have call successors, (0), 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) [2021-07-13 18:20:39,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:20:39,746 INFO L93 Difference]: Finished difference Result 10453 states and 28728 transitions. [2021-07-13 18:20:39,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-13 18:20:39,746 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 [2021-07-13 18:20:39,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:20:39,766 INFO L225 Difference]: With dead ends: 10453 [2021-07-13 18:20:39,766 INFO L226 Difference]: Without dead ends: 10093 [2021-07-13 18:20:39,766 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 18:20:39,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10093 states. [2021-07-13 18:20:39,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10093 to 9892. [2021-07-13 18:20:39,908 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) [2021-07-13 18:20:39,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9892 states to 9892 states and 27309 transitions. [2021-07-13 18:20:39,929 INFO L78 Accepts]: Start accepts. Automaton has 9892 states and 27309 transitions. Word has length 57 [2021-07-13 18:20:39,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:20:39,929 INFO L482 AbstractCegarLoop]: Abstraction has 9892 states and 27309 transitions. [2021-07-13 18:20:39,929 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) [2021-07-13 18:20:39,929 INFO L276 IsEmpty]: Start isEmpty. Operand 9892 states and 27309 transitions. [2021-07-13 18:20:39,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 18:20:39,933 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:20:39,933 INFO L508 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] [2021-07-13 18:20:39,933 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-07-13 18:20:39,933 INFO L430 AbstractCegarLoop]: === Iteration 2 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:20:39,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:20:39,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1448780911, now seen corresponding path program 1 times [2021-07-13 18:20:39,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:20:39,934 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833996598] [2021-07-13 18:20:39,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:20:39,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:20:39,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:20:39,949 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:20:39,949 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833996598] [2021-07-13 18:20:39,949 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833996598] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:20:39,949 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:20:39,949 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-13 18:20:39,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084267610] [2021-07-13 18:20:39,949 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-13 18:20:39,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:20:39,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-13 18:20:39,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 18:20:39,950 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) [2021-07-13 18:20:39,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:20:39,970 INFO L93 Difference]: Finished difference Result 4122 states and 10606 transitions. [2021-07-13 18:20:39,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-13 18:20:39,970 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 [2021-07-13 18:20:39,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:20:39,975 INFO L225 Difference]: With dead ends: 4122 [2021-07-13 18:20:39,975 INFO L226 Difference]: Without dead ends: 3970 [2021-07-13 18:20:39,975 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 18:20:39,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3970 states. [2021-07-13 18:20:40,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3970 to 3568. [2021-07-13 18:20:40,013 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) [2021-07-13 18:20:40,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3568 states to 3568 states and 9213 transitions. [2021-07-13 18:20:40,018 INFO L78 Accepts]: Start accepts. Automaton has 3568 states and 9213 transitions. Word has length 85 [2021-07-13 18:20:40,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:20:40,019 INFO L482 AbstractCegarLoop]: Abstraction has 3568 states and 9213 transitions. [2021-07-13 18:20:40,019 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) [2021-07-13 18:20:40,019 INFO L276 IsEmpty]: Start isEmpty. Operand 3568 states and 9213 transitions. [2021-07-13 18:20:40,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-07-13 18:20:40,022 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:20:40,022 INFO L508 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] [2021-07-13 18:20:40,022 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-07-13 18:20:40,022 INFO L430 AbstractCegarLoop]: === Iteration 3 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:20:40,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:20:40,022 INFO L82 PathProgramCache]: Analyzing trace with hash -315494749, now seen corresponding path program 1 times [2021-07-13 18:20:40,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:20:40,022 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840762578] [2021-07-13 18:20:40,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:20:40,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:20:40,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:20:40,038 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:20:40,038 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840762578] [2021-07-13 18:20:40,038 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840762578] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:20:40,038 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:20:40,038 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-13 18:20:40,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919457078] [2021-07-13 18:20:40,038 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-13 18:20:40,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:20:40,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-13 18:20:40,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 18:20:40,039 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) [2021-07-13 18:20:40,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:20:40,063 INFO L93 Difference]: Finished difference Result 4701 states and 12051 transitions. [2021-07-13 18:20:40,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-13 18:20:40,063 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 [2021-07-13 18:20:40,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:20:40,069 INFO L225 Difference]: With dead ends: 4701 [2021-07-13 18:20:40,070 INFO L226 Difference]: Without dead ends: 4701 [2021-07-13 18:20:40,070 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 18:20:40,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4701 states. [2021-07-13 18:20:40,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4701 to 3865. [2021-07-13 18:20:40,113 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) [2021-07-13 18:20:40,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3865 states to 3865 states and 9901 transitions. [2021-07-13 18:20:40,119 INFO L78 Accepts]: Start accepts. Automaton has 3865 states and 9901 transitions. Word has length 92 [2021-07-13 18:20:40,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:20:40,120 INFO L482 AbstractCegarLoop]: Abstraction has 3865 states and 9901 transitions. [2021-07-13 18:20:40,120 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) [2021-07-13 18:20:40,120 INFO L276 IsEmpty]: Start isEmpty. Operand 3865 states and 9901 transitions. [2021-07-13 18:20:40,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-07-13 18:20:40,124 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:20:40,124 INFO L508 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] [2021-07-13 18:20:40,125 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-07-13 18:20:40,125 INFO L430 AbstractCegarLoop]: === Iteration 4 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:20:40,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:20:40,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1879841945, now seen corresponding path program 1 times [2021-07-13 18:20:40,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:20:40,125 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385865851] [2021-07-13 18:20:40,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:20:40,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:20:40,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:20:40,640 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:20:40,640 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385865851] [2021-07-13 18:20:40,640 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385865851] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:20:40,640 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:20:40,640 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-07-13 18:20:40,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319543305] [2021-07-13 18:20:40,641 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-07-13 18:20:40,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:20:40,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-07-13 18:20:40,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2021-07-13 18:20:40,641 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) [2021-07-13 18:20:42,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:20:42,940 INFO L93 Difference]: Finished difference Result 9259 states and 23813 transitions. [2021-07-13 18:20:42,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-07-13 18:20:42,941 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 [2021-07-13 18:20:42,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:20:42,953 INFO L225 Difference]: With dead ends: 9259 [2021-07-13 18:20:42,953 INFO L226 Difference]: Without dead ends: 8521 [2021-07-13 18:20:42,954 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 663 ImplicationChecksByTransitivity, 1698.8ms TimeCoverageRelationStatistics Valid=577, Invalid=2963, Unknown=0, NotChecked=0, Total=3540 [2021-07-13 18:20:42,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8521 states. [2021-07-13 18:20:43,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8521 to 5713. [2021-07-13 18:20:43,022 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) [2021-07-13 18:20:43,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5713 states to 5713 states and 14627 transitions. [2021-07-13 18:20:43,030 INFO L78 Accepts]: Start accepts. Automaton has 5713 states and 14627 transitions. Word has length 102 [2021-07-13 18:20:43,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:20:43,030 INFO L482 AbstractCegarLoop]: Abstraction has 5713 states and 14627 transitions. [2021-07-13 18:20:43,030 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) [2021-07-13 18:20:43,030 INFO L276 IsEmpty]: Start isEmpty. Operand 5713 states and 14627 transitions. [2021-07-13 18:20:43,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-07-13 18:20:43,035 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:20:43,035 INFO L508 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] [2021-07-13 18:20:43,035 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-07-13 18:20:43,035 INFO L430 AbstractCegarLoop]: === Iteration 5 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:20:43,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:20:43,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1475354589, now seen corresponding path program 2 times [2021-07-13 18:20:43,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:20:43,036 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308035159] [2021-07-13 18:20:43,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:20:43,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:20:43,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:20:43,708 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:20:43,708 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308035159] [2021-07-13 18:20:43,708 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308035159] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:20:43,708 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:20:43,708 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-13 18:20:43,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442365964] [2021-07-13 18:20:43,708 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-13 18:20:43,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:20:43,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-13 18:20:43,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2021-07-13 18:20:43,709 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) [2021-07-13 18:20:45,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:20:45,840 INFO L93 Difference]: Finished difference Result 12089 states and 31086 transitions. [2021-07-13 18:20:45,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-07-13 18:20:45,840 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 [2021-07-13 18:20:45,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:20:45,870 INFO L225 Difference]: With dead ends: 12089 [2021-07-13 18:20:45,870 INFO L226 Difference]: Without dead ends: 11546 [2021-07-13 18:20:45,871 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 1640.6ms TimeCoverageRelationStatistics Valid=399, Invalid=2463, Unknown=0, NotChecked=0, Total=2862 [2021-07-13 18:20:45,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11546 states. [2021-07-13 18:20:45,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11546 to 6669. [2021-07-13 18:20:45,982 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) [2021-07-13 18:20:45,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6669 states to 6669 states and 17096 transitions. [2021-07-13 18:20:45,994 INFO L78 Accepts]: Start accepts. Automaton has 6669 states and 17096 transitions. Word has length 102 [2021-07-13 18:20:45,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:20:45,995 INFO L482 AbstractCegarLoop]: Abstraction has 6669 states and 17096 transitions. [2021-07-13 18:20:45,995 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) [2021-07-13 18:20:45,995 INFO L276 IsEmpty]: Start isEmpty. Operand 6669 states and 17096 transitions. [2021-07-13 18:20:46,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-07-13 18:20:46,002 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:20:46,002 INFO L508 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] [2021-07-13 18:20:46,002 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-07-13 18:20:46,002 INFO L430 AbstractCegarLoop]: === Iteration 6 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:20:46,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:20:46,002 INFO L82 PathProgramCache]: Analyzing trace with hash 61773313, now seen corresponding path program 3 times [2021-07-13 18:20:46,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:20:46,002 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281021477] [2021-07-13 18:20:46,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:20:46,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:20:46,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:20:46,579 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:20:46,579 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281021477] [2021-07-13 18:20:46,579 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281021477] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:20:46,579 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:20:46,579 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-13 18:20:46,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216980839] [2021-07-13 18:20:46,579 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-13 18:20:46,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:20:46,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-13 18:20:46,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2021-07-13 18:20:46,580 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) [2021-07-13 18:20:49,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:20:49,720 INFO L93 Difference]: Finished difference Result 12531 states and 32234 transitions. [2021-07-13 18:20:49,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-07-13 18:20:49,721 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 [2021-07-13 18:20:49,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:20:49,738 INFO L225 Difference]: With dead ends: 12531 [2021-07-13 18:20:49,739 INFO L226 Difference]: Without dead ends: 11823 [2021-07-13 18:20:49,740 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 883 ImplicationChecksByTransitivity, 2455.5ms TimeCoverageRelationStatistics Valid=621, Invalid=3669, Unknown=0, NotChecked=0, Total=4290 [2021-07-13 18:20:49,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11823 states. [2021-07-13 18:20:49,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11823 to 5713. [2021-07-13 18:20:49,839 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) [2021-07-13 18:20:49,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5713 states to 5713 states and 14622 transitions. [2021-07-13 18:20:49,848 INFO L78 Accepts]: Start accepts. Automaton has 5713 states and 14622 transitions. Word has length 102 [2021-07-13 18:20:49,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:20:49,848 INFO L482 AbstractCegarLoop]: Abstraction has 5713 states and 14622 transitions. [2021-07-13 18:20:49,848 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) [2021-07-13 18:20:49,848 INFO L276 IsEmpty]: Start isEmpty. Operand 5713 states and 14622 transitions. [2021-07-13 18:20:49,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-07-13 18:20:49,857 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:20:49,857 INFO L508 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] [2021-07-13 18:20:49,857 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-07-13 18:20:49,858 INFO L430 AbstractCegarLoop]: === Iteration 7 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:20:49,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:20:49,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1884830054, now seen corresponding path program 1 times [2021-07-13 18:20:49,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:20:49,858 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248925176] [2021-07-13 18:20:49,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:20:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:20:50,314 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:20:50,314 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:20:50,314 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248925176] [2021-07-13 18:20:50,314 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248925176] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:20:50,314 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955367182] [2021-07-13 18:20:50,314 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 [2021-07-13 18:20:50,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:20:50,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 58 conjunts are in the unsatisfiable core [2021-07-13 18:20:50,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:20:50,757 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 [2021-07-13 18:20:50,758 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-13 18:20:50,772 INFO L628 ElimStorePlain]: treesize reduction 5, result has 83.3 percent of original size [2021-07-13 18:20:50,774 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-07-13 18:20:50,774 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:34, output treesize:28 [2021-07-13 18:20:51,011 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-13 18:20:51,012 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 18:20:51,013 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 [2021-07-13 18:20:51,014 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-13 18:20:51,018 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 18:20:51,020 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-07-13 18:20:51,020 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:30, output treesize:7 [2021-07-13 18:20:51,174 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:20:51,174 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955367182] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:20:51,174 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:20:51,174 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 36 [2021-07-13 18:20:51,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105486833] [2021-07-13 18:20:51,174 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-07-13 18:20:51,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:20:51,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-07-13 18:20:51,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=1167, Unknown=0, NotChecked=0, Total=1260 [2021-07-13 18:20:51,175 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) [2021-07-13 18:20:54,293 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-07-13 18:20:54,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:20:54,579 INFO L93 Difference]: Finished difference Result 12591 states and 32345 transitions. [2021-07-13 18:20:54,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-13 18:20:54,580 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 [2021-07-13 18:20:54,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:20:54,599 INFO L225 Difference]: With dead ends: 12591 [2021-07-13 18:20:54,600 INFO L226 Difference]: Without dead ends: 12591 [2021-07-13 18:20:54,601 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1200 ImplicationChecksByTransitivity, 2744.9ms TimeCoverageRelationStatistics Valid=694, Invalid=4708, Unknown=0, NotChecked=0, Total=5402 [2021-07-13 18:20:54,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12591 states. [2021-07-13 18:20:54,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12591 to 8812. [2021-07-13 18:20:54,731 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) [2021-07-13 18:20:54,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8812 states to 8812 states and 22602 transitions. [2021-07-13 18:20:54,748 INFO L78 Accepts]: Start accepts. Automaton has 8812 states and 22602 transitions. Word has length 136 [2021-07-13 18:20:54,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:20:54,749 INFO L482 AbstractCegarLoop]: Abstraction has 8812 states and 22602 transitions. [2021-07-13 18:20:54,749 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) [2021-07-13 18:20:54,749 INFO L276 IsEmpty]: Start isEmpty. Operand 8812 states and 22602 transitions. [2021-07-13 18:20:54,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-07-13 18:20:54,761 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:20:54,761 INFO L508 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] [2021-07-13 18:20:54,961 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-07-13 18:20:54,962 INFO L430 AbstractCegarLoop]: === Iteration 8 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:20:54,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:20:54,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1485268962, now seen corresponding path program 2 times [2021-07-13 18:20:54,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:20:54,962 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329986093] [2021-07-13 18:20:54,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:20:54,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:20:55,718 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:20:55,719 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:20:55,719 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329986093] [2021-07-13 18:20:55,719 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329986093] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:20:55,719 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807857226] [2021-07-13 18:20:55,719 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 [2021-07-13 18:20:55,808 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-07-13 18:20:55,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:20:55,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 60 conjunts are in the unsatisfiable core [2021-07-13 18:20:55,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:20:55,829 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 [2021-07-13 18:20:55,830 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-13 18:20:55,831 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 18:20:55,831 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-13 18:20:55,831 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2021-07-13 18:20:55,866 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-07-13 18:20:55,866 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 [2021-07-13 18:20:55,868 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-13 18:20:55,870 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 18:20:55,871 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. [2021-07-13 18:20:55,871 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:15 [2021-07-13 18:20:55,984 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-07-13 18:20:55,984 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 [2021-07-13 18:20:55,986 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-13 18:20:55,991 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 18:20:55,995 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. [2021-07-13 18:20:55,995 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:26, output treesize:28 [2021-07-13 18:20:56,071 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-07-13 18:20:56,072 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 [2021-07-13 18:20:56,074 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-13 18:20:56,080 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 18:20:56,082 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-13 18:20:56,082 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:33, output treesize:4 Received shutdown request... [2021-07-13 18:34:46,019 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-07-13 18:34:46,020 WARN L547 AbstractCegarLoop]: Verification canceled [2021-07-13 18:34:46,020 INFO L301 ceAbstractionStarter]: Result for error location t2Thread1of1ForFork1 was TIMEOUT (3/3) [2021-07-13 18:34:46,021 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-13 18:34:46,022 WARN L196 ceAbstractionStarter]: Timeout [2021-07-13 18:34:46,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 06:34:46 BasicIcfg [2021-07-13 18:34:46,023 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-13 18:34:46,023 INFO L168 Benchmark]: Toolchain (without parser) took 866966.13 ms. Allocated memory was 215.0 MB in the beginning and 3.2 GB in the end (delta: 3.0 GB). Free memory was 176.7 MB in the beginning and 1.8 GB in the end (delta: -1.6 GB). Peak memory consumption was 2.3 GB. Max. memory is 8.0 GB. [2021-07-13 18:34:46,023 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 215.0 MB. Free memory is still 195.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-13 18:34:46,023 INFO L168 Benchmark]: CACSL2BoogieTranslator took 392.15 ms. Allocated memory is still 215.0 MB. Free memory was 176.4 MB in the beginning and 178.6 MB in the end (delta: -2.2 MB). Peak memory consumption was 12.4 MB. Max. memory is 8.0 GB. [2021-07-13 18:34:46,023 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.82 ms. Allocated memory is still 215.0 MB. Free memory was 178.6 MB in the beginning and 176.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-13 18:34:46,023 INFO L168 Benchmark]: Boogie Preprocessor took 30.84 ms. Allocated memory is still 215.0 MB. Free memory was 176.0 MB in the beginning and 174.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-13 18:34:46,023 INFO L168 Benchmark]: RCFGBuilder took 473.86 ms. Allocated memory is still 215.0 MB. Free memory was 174.4 MB in the beginning and 140.4 MB in the end (delta: 34.1 MB). Peak memory consumption was 33.6 MB. Max. memory is 8.0 GB. [2021-07-13 18:34:46,023 INFO L168 Benchmark]: TraceAbstraction took 866029.47 ms. Allocated memory was 215.0 MB in the beginning and 3.2 GB in the end (delta: 3.0 GB). Free memory was 139.8 MB in the beginning and 1.8 GB in the end (delta: -1.6 GB). Peak memory consumption was 2.3 GB. Max. memory is 8.0 GB. [2021-07-13 18:34:46,024 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 215.0 MB. Free memory is still 195.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 392.15 ms. Allocated memory is still 215.0 MB. Free memory was 176.4 MB in the beginning and 178.6 MB in the end (delta: -2.2 MB). Peak memory consumption was 12.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 32.82 ms. Allocated memory is still 215.0 MB. Free memory was 178.6 MB in the beginning and 176.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 30.84 ms. Allocated memory is still 215.0 MB. Free memory was 176.0 MB in the beginning and 174.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 473.86 ms. Allocated memory is still 215.0 MB. Free memory was 174.4 MB in the beginning and 140.4 MB in the end (delta: 34.1 MB). Peak memory consumption was 33.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 866029.47 ms. Allocated memory was 215.0 MB in the beginning and 3.2 GB in the end (delta: 3.0 GB). Free memory was 139.8 MB in the beginning and 1.8 GB in the end (delta: -1.6 GB). Peak memory consumption was 2.3 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 941]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - 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: 19380.8ms, OverallIterations: 19, TraceHistogramMax: 6, EmptinessCheckTime: 292.0ms, AutomataDifference: 3796.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 201.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3590 SDtfs, 9141 SDslu, 14917 SDs, 0 SdLazy, 1525 SolverSat, 235 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 667.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3514 GetRequests, 3217 SyntacticMatches, 0 SemanticMatches, 297 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 968 ImplicationChecksByTransitivity, 1411.7ms 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: 4063.2ms AutomataMinimizationTime, 19 MinimizatonAttempts, 46283 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 398.1ms SsaConstructionTime, 1148.5ms SatisfiabilityAnalysisTime, 5079.9ms InterpolantComputationTime, 6622 NumberOfCodeBlocks, 6391 NumberOfCodeBlocksAsserted, 58 NumberOfCheckSat, 6587 ConstructedInterpolants, 0 QuantifiedInterpolants, 17962 SizeOfPredicates, 126 NumberOfNonLiveVariables, 6104 ConjunctsInSsa, 163 ConjunctsInUnsatCore, 35 InterpolantComputations, 6 PerfectInterpolantSequences, 2035/6660 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: 7.8ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.7ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=320occurred 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: 846496.1ms, OverallIterations: 8, TraceHistogramMax: 2, EmptinessCheckTime: 58.1ms, AutomataDifference: 11209.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 113.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2426 SDtfs, 4708 SDslu, 31577 SDs, 0 SdLazy, 9519 SolverSat, 119 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3427.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 393 GetRequests, 137 SyntacticMatches, 7 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3316 ImplicationChecksByTransitivity, 8544.5ms 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: 708.6ms AutomataMinimizationTime, 7 MinimizatonAttempts, 19013 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 26.0ms SsaConstructionTime, 107.1ms SatisfiabilityAnalysisTime, 2932.8ms 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown