/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/stack_longest-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-13 18:23:06,308 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-13 18:23:06,309 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-13 18:23:06,342 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-13 18:23:06,342 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-13 18:23:06,344 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-13 18:23:06,346 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-13 18:23:06,350 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-13 18:23:06,351 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-13 18:23:06,354 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-13 18:23:06,355 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-13 18:23:06,356 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-13 18:23:06,356 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-13 18:23:06,358 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-13 18:23:06,358 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-13 18:23:06,359 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-13 18:23:06,361 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-13 18:23:06,362 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-13 18:23:06,364 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-13 18:23:06,367 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-13 18:23:06,370 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-13 18:23:06,371 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-13 18:23:06,371 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-13 18:23:06,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-13 18:23:06,378 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-13 18:23:06,378 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-13 18:23:06,378 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-13 18:23:06,379 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-13 18:23:06,379 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-13 18:23:06,380 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-13 18:23:06,380 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-13 18:23:06,380 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-13 18:23:06,381 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-13 18:23:06,382 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-13 18:23:06,383 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-13 18:23:06,383 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-13 18:23:06,383 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-13 18:23:06,383 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-13 18:23:06,383 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-13 18:23:06,384 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-13 18:23:06,385 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-13 18:23:06,388 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 18:23:06,415 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-13 18:23:06,415 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-13 18:23:06,416 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-13 18:23:06,416 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-13 18:23:06,418 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-13 18:23:06,418 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-13 18:23:06,418 INFO L138 SettingsManager]: * Use SBE=true [2021-07-13 18:23:06,418 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-13 18:23:06,418 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-13 18:23:06,418 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-13 18:23:06,419 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-13 18:23:06,419 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-13 18:23:06,419 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-13 18:23:06,419 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-13 18:23:06,420 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-13 18:23:06,420 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-13 18:23:06,420 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-13 18:23:06,420 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-13 18:23:06,420 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-13 18:23:06,420 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-13 18:23:06,420 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-13 18:23:06,420 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-13 18:23:06,421 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-13 18:23:06,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-13 18:23:06,421 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-13 18:23:06,421 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-13 18:23:06,421 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-13 18:23:06,421 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-13 18:23:06,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-13 18:23:06,421 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-13 18:23:06,421 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-13 18:23:06,422 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-13 18:23:06,671 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-13 18:23:06,689 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-13 18:23:06,691 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-13 18:23:06,692 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-13 18:23:06,692 INFO L275 PluginConnector]: CDTParser initialized [2021-07-13 18:23:06,693 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack_longest-2.i [2021-07-13 18:23:06,756 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15aacce8f/223f480f11f744b48c610d309e08606b/FLAG76daa8ec3 [2021-07-13 18:23:07,188 INFO L306 CDTParser]: Found 1 translation units. [2021-07-13 18:23:07,188 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longest-2.i [2021-07-13 18:23:07,199 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15aacce8f/223f480f11f744b48c610d309e08606b/FLAG76daa8ec3 [2021-07-13 18:23:07,527 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15aacce8f/223f480f11f744b48c610d309e08606b [2021-07-13 18:23:07,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-13 18:23:07,529 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-07-13 18:23:07,533 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-13 18:23:07,533 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-13 18:23:07,538 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-13 18:23:07,539 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:23:07" (1/1) ... [2021-07-13 18:23:07,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53a71acd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:23:07, skipping insertion in model container [2021-07-13 18:23:07,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:23:07" (1/1) ... [2021-07-13 18:23:07,545 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-13 18:23:07,582 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-13 18:23:07,894 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longest-2.i[41530,41543] [2021-07-13 18:23:07,907 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-13 18:23:07,914 INFO L203 MainTranslator]: Completed pre-run [2021-07-13 18:23:07,943 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longest-2.i[41530,41543] [2021-07-13 18:23:07,960 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-13 18:23:07,997 INFO L208 MainTranslator]: Completed translation [2021-07-13 18:23:07,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:23:07 WrapperNode [2021-07-13 18:23:07,998 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-13 18:23:07,998 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-13 18:23:07,999 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-13 18:23:07,999 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-13 18:23:08,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:23:07" (1/1) ... [2021-07-13 18:23:08,014 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:23:07" (1/1) ... [2021-07-13 18:23:08,030 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-13 18:23:08,030 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-13 18:23:08,031 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-13 18:23:08,031 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-13 18:23:08,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:23:07" (1/1) ... [2021-07-13 18:23:08,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:23:07" (1/1) ... [2021-07-13 18:23:08,039 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:23:07" (1/1) ... [2021-07-13 18:23:08,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:23:07" (1/1) ... [2021-07-13 18:23:08,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:23:07" (1/1) ... [2021-07-13 18:23:08,055 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:23:07" (1/1) ... [2021-07-13 18:23:08,057 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:23:07" (1/1) ... [2021-07-13 18:23:08,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-13 18:23:08,064 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-13 18:23:08,064 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-13 18:23:08,065 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-13 18:23:08,065 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:23:07" (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 18:23:08,111 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-07-13 18:23:08,111 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-07-13 18:23:08,111 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-07-13 18:23:08,112 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-07-13 18:23:08,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-13 18:23:08,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-13 18:23:08,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-07-13 18:23:08,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-13 18:23:08,113 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-07-13 18:23:08,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-13 18:23:08,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-13 18:23:08,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-13 18:23:08,114 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 18:23:08,586 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-13 18:23:08,586 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2021-07-13 18:23:08,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:23:08 BoogieIcfgContainer [2021-07-13 18:23:08,588 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-13 18:23:08,589 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-13 18:23:08,589 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-13 18:23:08,591 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-13 18:23:08,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 06:23:07" (1/3) ... [2021-07-13 18:23:08,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e20b7e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:23:08, skipping insertion in model container [2021-07-13 18:23:08,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:23:07" (2/3) ... [2021-07-13 18:23:08,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e20b7e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:23:08, skipping insertion in model container [2021-07-13 18:23:08,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:23:08" (3/3) ... [2021-07-13 18:23:08,593 INFO L111 eAbstractionObserver]: Analyzing ICFG stack_longest-2.i [2021-07-13 18:23:08,597 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-13 18:23:08,597 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-13 18:23:08,597 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-07-13 18:23:08,598 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-13 18:23:08,625 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,626 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,626 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,626 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,626 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,626 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,626 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,626 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,626 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,626 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,627 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,627 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,627 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,627 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,627 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,627 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,627 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,627 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,628 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,628 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,628 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,628 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,628 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,628 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,628 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,628 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,628 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,629 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,629 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,629 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,629 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,629 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,629 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,629 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,629 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,629 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,630 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,630 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,630 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,630 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,630 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,630 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,630 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,630 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,630 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,631 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,631 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,631 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,631 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,631 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,631 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,631 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,631 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,631 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,632 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,632 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,632 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,632 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,632 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,632 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,632 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,632 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,632 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,633 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,633 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,633 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,633 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,633 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,633 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,633 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,633 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,633 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,633 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,633 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,634 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,634 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,634 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,634 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,634 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,634 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,634 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,634 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,635 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,635 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,635 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,635 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,635 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,635 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,635 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,635 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,635 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,635 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,636 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,636 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,636 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,636 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,636 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,636 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,648 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,649 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,649 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,649 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,649 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,649 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,649 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,649 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,649 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,650 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,650 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,650 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,650 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,650 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,650 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,650 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,650 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,650 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,651 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,651 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,651 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,651 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,651 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,651 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,651 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,652 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,652 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,652 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,652 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,652 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,652 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,652 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,652 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,652 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,653 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,653 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,653 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,653 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,654 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,654 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,654 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,654 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,654 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,654 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,654 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,654 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,654 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,654 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,655 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,655 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,655 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,655 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,655 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,655 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,655 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,655 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,655 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,656 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,656 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,656 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,656 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,656 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,656 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,656 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,657 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,657 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,657 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,657 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,657 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,657 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,657 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,657 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,657 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,658 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,658 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,658 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,658 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,658 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,658 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,658 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,658 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,658 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,658 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,659 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,659 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,659 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,659 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,659 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,659 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,659 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,659 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,659 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,659 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,660 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,660 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,660 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,660 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,660 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,660 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,668 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,669 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,669 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,669 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,669 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,669 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,669 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,669 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,669 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,670 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,670 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,670 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,670 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,670 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,670 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,670 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,670 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,671 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,671 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,671 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,671 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,671 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,671 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,671 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,671 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,671 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,672 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,672 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,672 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,672 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,672 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,672 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,672 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,672 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,673 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,673 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,673 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,673 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,673 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,673 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,673 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,673 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,673 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,673 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,674 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,674 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,674 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,674 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,674 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,683 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,685 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,685 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,685 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,685 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,685 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,685 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,685 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,686 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,686 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,687 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,688 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,688 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,688 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,688 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,688 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,688 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,688 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,691 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,691 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,692 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,692 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,692 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,692 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,692 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,692 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,692 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,692 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,693 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,693 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,693 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,693 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,693 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,693 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,693 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,693 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,693 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,694 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,694 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,694 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,694 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:23:08,699 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-07-13 18:23:08,714 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-13 18:23:08,725 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-13 18:23:08,726 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-13 18:23:08,726 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-13 18:23:08,726 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-13 18:23:08,726 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-13 18:23:08,726 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-13 18:23:08,726 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-13 18:23:08,726 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == t1Thread1of1ForFork1======== [2021-07-13 18:23:08,735 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 145 places, 150 transitions, 322 flow [2021-07-13 18:23:08,923 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 7813 states, 7811 states have (on average 2.8641659198566125) internal successors, (22372), 7812 states have internal predecessors, (22372), 0 states have call successors, (0), 0 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 18:23:08,943 INFO L276 IsEmpty]: Start isEmpty. Operand has 7813 states, 7811 states have (on average 2.8641659198566125) internal successors, (22372), 7812 states have internal predecessors, (22372), 0 states have call successors, (0), 0 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 18:23:08,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-07-13 18:23:08,964 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:23:08,965 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] [2021-07-13 18:23:08,965 INFO L430 AbstractCegarLoop]: === Iteration 1 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:23:08,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:23:08,972 INFO L82 PathProgramCache]: Analyzing trace with hash -712665903, now seen corresponding path program 1 times [2021-07-13 18:23:08,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:23:08,978 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108286164] [2021-07-13 18:23:08,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:23:09,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:23:09,242 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 18:23:09,242 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:23:09,243 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108286164] [2021-07-13 18:23:09,243 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108286164] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:23:09,243 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:23:09,243 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-13 18:23:09,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71220753] [2021-07-13 18:23:09,247 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-13 18:23:09,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:23:09,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-13 18:23:09,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 18:23:09,286 INFO L87 Difference]: Start difference. First operand has 7813 states, 7811 states have (on average 2.8641659198566125) internal successors, (22372), 7812 states have internal predecessors, (22372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:09,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:23:09,412 INFO L93 Difference]: Finished difference Result 10818 states and 29690 transitions. [2021-07-13 18:23:09,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-13 18:23:09,414 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-07-13 18:23:09,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:23:09,473 INFO L225 Difference]: With dead ends: 10818 [2021-07-13 18:23:09,473 INFO L226 Difference]: Without dead ends: 10548 [2021-07-13 18:23:09,474 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 18:23:09,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10548 states. [2021-07-13 18:23:09,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10548 to 10224. [2021-07-13 18:23:09,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10224 states, 10222 states have (on average 2.759929563686167) internal successors, (28212), 10223 states have internal predecessors, (28212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:09,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10224 states to 10224 states and 28212 transitions. [2021-07-13 18:23:09,937 INFO L78 Accepts]: Start accepts. Automaton has 10224 states and 28212 transitions. Word has length 54 [2021-07-13 18:23:09,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:23:09,938 INFO L482 AbstractCegarLoop]: Abstraction has 10224 states and 28212 transitions. [2021-07-13 18:23:09,939 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:09,939 INFO L276 IsEmpty]: Start isEmpty. Operand 10224 states and 28212 transitions. [2021-07-13 18:23:09,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-07-13 18:23:09,945 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:23:09,946 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] [2021-07-13 18:23:09,946 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-13 18:23:09,946 INFO L430 AbstractCegarLoop]: === Iteration 2 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:23:09,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:23:09,948 INFO L82 PathProgramCache]: Analyzing trace with hash -89293531, now seen corresponding path program 1 times [2021-07-13 18:23:09,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:23:09,949 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649669550] [2021-07-13 18:23:09,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:23:09,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:23:10,048 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 18:23:10,049 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:23:10,049 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649669550] [2021-07-13 18:23:10,050 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649669550] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:23:10,051 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:23:10,052 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 18:23:10,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750181310] [2021-07-13 18:23:10,055 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-13 18:23:10,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:23:10,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-13 18:23:10,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-13 18:23:10,060 INFO L87 Difference]: Start difference. First operand 10224 states and 28212 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:10,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:23:10,209 INFO L93 Difference]: Finished difference Result 15012 states and 41360 transitions. [2021-07-13 18:23:10,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-13 18:23:10,210 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-07-13 18:23:10,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:23:10,269 INFO L225 Difference]: With dead ends: 15012 [2021-07-13 18:23:10,269 INFO L226 Difference]: Without dead ends: 15012 [2021-07-13 18:23:10,270 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 18:23:10,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15012 states. [2021-07-13 18:23:10,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15012 to 10980. [2021-07-13 18:23:10,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10980 states, 10978 states have (on average 2.7589724904354163) internal successors, (30288), 10979 states have internal predecessors, (30288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:10,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10980 states to 10980 states and 30288 transitions. [2021-07-13 18:23:10,653 INFO L78 Accepts]: Start accepts. Automaton has 10980 states and 30288 transitions. Word has length 63 [2021-07-13 18:23:10,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:23:10,653 INFO L482 AbstractCegarLoop]: Abstraction has 10980 states and 30288 transitions. [2021-07-13 18:23:10,653 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:10,654 INFO L276 IsEmpty]: Start isEmpty. Operand 10980 states and 30288 transitions. [2021-07-13 18:23:10,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-13 18:23:10,664 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:23:10,664 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] [2021-07-13 18:23:10,664 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-13 18:23:10,664 INFO L430 AbstractCegarLoop]: === Iteration 3 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:23:10,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:23:10,670 INFO L82 PathProgramCache]: Analyzing trace with hash -835995566, now seen corresponding path program 1 times [2021-07-13 18:23:10,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:23:10,671 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722403665] [2021-07-13 18:23:10,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:23:10,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:23:10,757 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 18:23:10,757 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:23:10,757 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722403665] [2021-07-13 18:23:10,757 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722403665] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:10,758 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192330071] [2021-07-13 18:23:10,758 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 18:23:10,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:23:10,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 4 conjunts are in the unsatisfiable core [2021-07-13 18:23:10,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:23:11,137 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 18:23:11,137 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192330071] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:11,137 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:23:11,137 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-07-13 18:23:11,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237901620] [2021-07-13 18:23:11,138 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-13 18:23:11,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:23:11,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-13 18:23:11,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-07-13 18:23:11,139 INFO L87 Difference]: Start difference. First operand 10980 states and 30288 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:11,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:23:11,385 INFO L93 Difference]: Finished difference Result 18555 states and 50921 transitions. [2021-07-13 18:23:11,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-13 18:23:11,385 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-07-13 18:23:11,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:23:11,436 INFO L225 Difference]: With dead ends: 18555 [2021-07-13 18:23:11,436 INFO L226 Difference]: Without dead ends: 18555 [2021-07-13 18:23:11,436 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 44.2ms TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2021-07-13 18:23:11,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18555 states. [2021-07-13 18:23:11,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18555 to 14604. [2021-07-13 18:23:11,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14604 states, 14602 states have (on average 2.753116011505273) internal successors, (40201), 14603 states have internal predecessors, (40201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:11,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14604 states to 14604 states and 40201 transitions. [2021-07-13 18:23:11,882 INFO L78 Accepts]: Start accepts. Automaton has 14604 states and 40201 transitions. Word has length 88 [2021-07-13 18:23:11,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:23:11,882 INFO L482 AbstractCegarLoop]: Abstraction has 14604 states and 40201 transitions. [2021-07-13 18:23:11,882 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:11,883 INFO L276 IsEmpty]: Start isEmpty. Operand 14604 states and 40201 transitions. [2021-07-13 18:23:11,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-07-13 18:23:11,901 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:23:11,901 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] [2021-07-13 18:23:12,120 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-07-13 18:23:12,121 INFO L430 AbstractCegarLoop]: === Iteration 4 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:23:12,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:23:12,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1529144013, now seen corresponding path program 1 times [2021-07-13 18:23:12,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:23:12,122 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840419688] [2021-07-13 18:23:12,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:23:12,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:23:12,173 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-07-13 18:23:12,173 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:23:12,173 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840419688] [2021-07-13 18:23:12,173 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840419688] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:23:12,173 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:23:12,173 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-13 18:23:12,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724606023] [2021-07-13 18:23:12,174 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-13 18:23:12,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:23:12,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-13 18:23:12,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 18:23:12,175 INFO L87 Difference]: Start difference. First operand 14604 states and 40201 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 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 18:23:12,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:23:12,294 INFO L93 Difference]: Finished difference Result 6196 states and 15963 transitions. [2021-07-13 18:23:12,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-13 18:23:12,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-07-13 18:23:12,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:23:12,307 INFO L225 Difference]: With dead ends: 6196 [2021-07-13 18:23:12,307 INFO L226 Difference]: Without dead ends: 6076 [2021-07-13 18:23:12,307 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 18:23:12,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6076 states. [2021-07-13 18:23:12,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6076 to 5876. [2021-07-13 18:23:12,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5876 states, 5874 states have (on average 2.5718420156622406) internal successors, (15107), 5875 states have internal predecessors, (15107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:12,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5876 states to 5876 states and 15107 transitions. [2021-07-13 18:23:12,443 INFO L78 Accepts]: Start accepts. Automaton has 5876 states and 15107 transitions. Word has length 109 [2021-07-13 18:23:12,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:23:12,445 INFO L482 AbstractCegarLoop]: Abstraction has 5876 states and 15107 transitions. [2021-07-13 18:23:12,445 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 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 18:23:12,445 INFO L276 IsEmpty]: Start isEmpty. Operand 5876 states and 15107 transitions. [2021-07-13 18:23:12,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-07-13 18:23:12,456 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:23:12,456 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] [2021-07-13 18:23:12,456 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-13 18:23:12,456 INFO L430 AbstractCegarLoop]: === Iteration 5 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:23:12,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:23:12,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1832797293, now seen corresponding path program 2 times [2021-07-13 18:23:12,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:23:12,457 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891763629] [2021-07-13 18:23:12,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:23:12,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:23:12,548 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 18:23:12,549 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:23:12,551 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891763629] [2021-07-13 18:23:12,552 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891763629] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:12,552 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200914741] [2021-07-13 18:23:12,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:23:12,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-13 18:23:12,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:23:12,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 6 conjunts are in the unsatisfiable core [2021-07-13 18:23:12,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:23:12,860 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 18:23:12,860 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200914741] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:12,860 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:23:12,861 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-07-13 18:23:12,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512936609] [2021-07-13 18:23:12,861 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-13 18:23:12,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:23:12,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-13 18:23:12,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-07-13 18:23:12,863 INFO L87 Difference]: Start difference. First operand 5876 states and 15107 transitions. Second operand has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:12,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:23:12,987 INFO L93 Difference]: Finished difference Result 9595 states and 24725 transitions. [2021-07-13 18:23:12,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-13 18:23:12,987 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-07-13 18:23:12,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:23:13,011 INFO L225 Difference]: With dead ends: 9595 [2021-07-13 18:23:13,011 INFO L226 Difference]: Without dead ends: 9595 [2021-07-13 18:23:13,011 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 62.2ms TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2021-07-13 18:23:13,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9595 states. [2021-07-13 18:23:13,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9595 to 7678. [2021-07-13 18:23:13,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7678 states, 7676 states have (on average 2.568655549765503) internal successors, (19717), 7677 states have internal predecessors, (19717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:13,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7678 states to 7678 states and 19717 transitions. [2021-07-13 18:23:13,219 INFO L78 Accepts]: Start accepts. Automaton has 7678 states and 19717 transitions. Word has length 122 [2021-07-13 18:23:13,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:23:13,220 INFO L482 AbstractCegarLoop]: Abstraction has 7678 states and 19717 transitions. [2021-07-13 18:23:13,221 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:13,221 INFO L276 IsEmpty]: Start isEmpty. Operand 7678 states and 19717 transitions. [2021-07-13 18:23:13,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-07-13 18:23:13,233 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:23:13,233 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] [2021-07-13 18:23:13,451 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:23:13,452 INFO L430 AbstractCegarLoop]: === Iteration 6 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:23:13,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:23:13,452 INFO L82 PathProgramCache]: Analyzing trace with hash 989155091, now seen corresponding path program 1 times [2021-07-13 18:23:13,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:23:13,453 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623663000] [2021-07-13 18:23:13,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:23:13,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:23:13,533 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 18:23:13,533 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:23:13,533 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623663000] [2021-07-13 18:23:13,533 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623663000] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:13,533 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585516590] [2021-07-13 18:23:13,533 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 18:23:13,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:23:13,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 6 conjunts are in the unsatisfiable core [2021-07-13 18:23:13,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:23:13,784 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-07-13 18:23:13,785 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585516590] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:13,785 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:23:13,785 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-07-13 18:23:13,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580086568] [2021-07-13 18:23:13,785 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-13 18:23:13,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:23:13,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-13 18:23:13,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-07-13 18:23:13,786 INFO L87 Difference]: Start difference. First operand 7678 states and 19717 transitions. Second operand has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:13,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:23:13,906 INFO L93 Difference]: Finished difference Result 11373 states and 29306 transitions. [2021-07-13 18:23:13,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-13 18:23:13,906 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2021-07-13 18:23:13,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:23:13,928 INFO L225 Difference]: With dead ends: 11373 [2021-07-13 18:23:13,928 INFO L226 Difference]: Without dead ends: 11373 [2021-07-13 18:23:13,929 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 48.3ms TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-07-13 18:23:13,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11373 states. [2021-07-13 18:23:14,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11373 to 8938. [2021-07-13 18:23:14,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8938 states, 8936 states have (on average 2.5924350940017904) internal successors, (23166), 8937 states have internal predecessors, (23166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:14,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8938 states to 8938 states and 23166 transitions. [2021-07-13 18:23:14,133 INFO L78 Accepts]: Start accepts. Automaton has 8938 states and 23166 transitions. Word has length 123 [2021-07-13 18:23:14,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:23:14,134 INFO L482 AbstractCegarLoop]: Abstraction has 8938 states and 23166 transitions. [2021-07-13 18:23:14,134 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:14,134 INFO L276 IsEmpty]: Start isEmpty. Operand 8938 states and 23166 transitions. [2021-07-13 18:23:14,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-07-13 18:23:14,158 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:23:14,158 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] [2021-07-13 18:23:14,367 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:23:14,368 INFO L430 AbstractCegarLoop]: === Iteration 7 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:23:14,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:23:14,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1495248532, now seen corresponding path program 3 times [2021-07-13 18:23:14,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:23:14,368 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415416350] [2021-07-13 18:23:14,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:23:14,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:23:14,460 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 18:23:14,461 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:23:14,461 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415416350] [2021-07-13 18:23:14,461 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415416350] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:14,461 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469961579] [2021-07-13 18:23:14,461 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 18:23:14,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-07-13 18:23:14,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:23:14,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 8 conjunts are in the unsatisfiable core [2021-07-13 18:23:14,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:23:14,800 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 18:23:14,800 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469961579] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:14,800 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:23:14,801 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-07-13 18:23:14,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186926501] [2021-07-13 18:23:14,801 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-13 18:23:14,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:23:14,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-13 18:23:14,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-07-13 18:23:14,803 INFO L87 Difference]: Start difference. First operand 8938 states and 23166 transitions. Second operand has 11 states, 11 states have (on average 18.454545454545453) internal successors, (203), 11 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:14,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:23:14,960 INFO L93 Difference]: Finished difference Result 13937 states and 35971 transitions. [2021-07-13 18:23:14,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-13 18:23:14,961 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 18.454545454545453) internal successors, (203), 11 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2021-07-13 18:23:14,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:23:14,986 INFO L225 Difference]: With dead ends: 13937 [2021-07-13 18:23:14,986 INFO L226 Difference]: Without dead ends: 13937 [2021-07-13 18:23:14,987 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 73.9ms TimeCoverageRelationStatistics Valid=121, Invalid=221, Unknown=0, NotChecked=0, Total=342 [2021-07-13 18:23:15,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13937 states. [2021-07-13 18:23:15,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13937 to 10740. [2021-07-13 18:23:15,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10740 states, 10738 states have (on average 2.5867014341590613) internal successors, (27776), 10739 states have internal predecessors, (27776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:15,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10740 states to 10740 states and 27776 transitions. [2021-07-13 18:23:15,232 INFO L78 Accepts]: Start accepts. Automaton has 10740 states and 27776 transitions. Word has length 156 [2021-07-13 18:23:15,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:23:15,233 INFO L482 AbstractCegarLoop]: Abstraction has 10740 states and 27776 transitions. [2021-07-13 18:23:15,233 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 18.454545454545453) internal successors, (203), 11 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:15,233 INFO L276 IsEmpty]: Start isEmpty. Operand 10740 states and 27776 transitions. [2021-07-13 18:23:15,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-07-13 18:23:15,250 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:23:15,250 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] [2021-07-13 18:23:15,455 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:23:15,456 INFO L430 AbstractCegarLoop]: === Iteration 8 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:23:15,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:23:15,456 INFO L82 PathProgramCache]: Analyzing trace with hash 43164722, now seen corresponding path program 2 times [2021-07-13 18:23:15,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:23:15,456 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881265800] [2021-07-13 18:23:15,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:23:15,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:23:15,548 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 6 proven. 50 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-07-13 18:23:15,548 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:23:15,548 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881265800] [2021-07-13 18:23:15,548 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881265800] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:15,549 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115082152] [2021-07-13 18:23:15,549 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 18:23:15,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-13 18:23:15,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:23:15,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 8 conjunts are in the unsatisfiable core [2021-07-13 18:23:15,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:23:15,869 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 6 proven. 50 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-07-13 18:23:15,869 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115082152] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:15,869 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:23:15,869 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-07-13 18:23:15,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138266234] [2021-07-13 18:23:15,870 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-13 18:23:15,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:23:15,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-13 18:23:15,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-07-13 18:23:15,871 INFO L87 Difference]: Start difference. First operand 10740 states and 27776 transitions. Second operand has 10 states, 10 states have (on average 20.1) internal successors, (201), 10 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:16,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:23:16,044 INFO L93 Difference]: Finished difference Result 15875 states and 41000 transitions. [2021-07-13 18:23:16,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-13 18:23:16,045 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 20.1) internal successors, (201), 10 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2021-07-13 18:23:16,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:23:16,072 INFO L225 Difference]: With dead ends: 15875 [2021-07-13 18:23:16,072 INFO L226 Difference]: Without dead ends: 15875 [2021-07-13 18:23:16,072 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 72.1ms TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-07-13 18:23:16,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15875 states. [2021-07-13 18:23:16,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15875 to 12000. [2021-07-13 18:23:16,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12000 states, 11998 states have (on average 2.60251708618103) internal successors, (31225), 11999 states have internal predecessors, (31225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:16,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12000 states to 12000 states and 31225 transitions. [2021-07-13 18:23:16,334 INFO L78 Accepts]: Start accepts. Automaton has 12000 states and 31225 transitions. Word has length 157 [2021-07-13 18:23:16,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:23:16,334 INFO L482 AbstractCegarLoop]: Abstraction has 12000 states and 31225 transitions. [2021-07-13 18:23:16,335 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 20.1) internal successors, (201), 10 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:16,335 INFO L276 IsEmpty]: Start isEmpty. Operand 12000 states and 31225 transitions. [2021-07-13 18:23:16,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-07-13 18:23:16,357 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:23:16,357 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] [2021-07-13 18:23:16,573 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:23:16,573 INFO L430 AbstractCegarLoop]: === Iteration 9 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:23:16,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:23:16,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1830396245, now seen corresponding path program 4 times [2021-07-13 18:23:16,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:23:16,574 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936150697] [2021-07-13 18:23:16,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:23:16,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:23:16,667 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 18:23:16,667 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:23:16,667 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936150697] [2021-07-13 18:23:16,667 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936150697] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:16,667 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378198000] [2021-07-13 18:23:16,667 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 18:23:16,815 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-13 18:23:16,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:23:16,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 10 conjunts are in the unsatisfiable core [2021-07-13 18:23:16,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:23:17,050 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 18:23:17,051 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378198000] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:17,051 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:23:17,051 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-07-13 18:23:17,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665747647] [2021-07-13 18:23:17,051 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-07-13 18:23:17,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:23:17,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-07-13 18:23:17,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-07-13 18:23:17,052 INFO L87 Difference]: Start difference. First operand 12000 states and 31225 transitions. Second operand has 13 states, 13 states have (on average 18.23076923076923) internal successors, (237), 13 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:17,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:23:17,279 INFO L93 Difference]: Finished difference Result 17199 states and 44580 transitions. [2021-07-13 18:23:17,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-13 18:23:17,279 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 18.23076923076923) internal successors, (237), 13 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-07-13 18:23:17,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:23:17,313 INFO L225 Difference]: With dead ends: 17199 [2021-07-13 18:23:17,313 INFO L226 Difference]: Without dead ends: 17199 [2021-07-13 18:23:17,313 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 113.0ms TimeCoverageRelationStatistics Valid=176, Invalid=330, Unknown=0, NotChecked=0, Total=506 [2021-07-13 18:23:17,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17199 states. [2021-07-13 18:23:17,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17199 to 13802. [2021-07-13 18:23:17,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13802 states, 13800 states have (on average 2.5967391304347824) internal successors, (35835), 13801 states have internal predecessors, (35835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:17,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13802 states to 13802 states and 35835 transitions. [2021-07-13 18:23:17,610 INFO L78 Accepts]: Start accepts. Automaton has 13802 states and 35835 transitions. Word has length 190 [2021-07-13 18:23:17,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:23:17,610 INFO L482 AbstractCegarLoop]: Abstraction has 13802 states and 35835 transitions. [2021-07-13 18:23:17,611 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 18.23076923076923) internal successors, (237), 13 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:17,611 INFO L276 IsEmpty]: Start isEmpty. Operand 13802 states and 35835 transitions. [2021-07-13 18:23:17,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-07-13 18:23:17,632 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:23:17,633 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] [2021-07-13 18:23:17,849 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:23:17,849 INFO L430 AbstractCegarLoop]: === Iteration 10 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:23:17,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:23:17,850 INFO L82 PathProgramCache]: Analyzing trace with hash 704345301, now seen corresponding path program 3 times [2021-07-13 18:23:17,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:23:17,850 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107139947] [2021-07-13 18:23:17,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:23:17,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:23:17,934 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 9 proven. 136 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-07-13 18:23:17,934 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:23:17,934 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107139947] [2021-07-13 18:23:17,934 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107139947] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:17,934 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139541637] [2021-07-13 18:23:17,934 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 18:23:18,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-07-13 18:23:18,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:23:18,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 10 conjunts are in the unsatisfiable core [2021-07-13 18:23:18,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:23:18,283 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 9 proven. 113 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-07-13 18:23:18,283 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139541637] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:18,283 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:23:18,283 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 10 [2021-07-13 18:23:18,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585772665] [2021-07-13 18:23:18,284 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-13 18:23:18,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:23:18,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-13 18:23:18,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-07-13 18:23:18,284 INFO L87 Difference]: Start difference. First operand 13802 states and 35835 transitions. Second operand has 10 states, 10 states have (on average 21.4) internal successors, (214), 10 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:18,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:23:18,441 INFO L93 Difference]: Finished difference Result 17787 states and 46053 transitions. [2021-07-13 18:23:18,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-13 18:23:18,441 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 21.4) internal successors, (214), 10 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 191 [2021-07-13 18:23:18,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:23:18,470 INFO L225 Difference]: With dead ends: 17787 [2021-07-13 18:23:18,470 INFO L226 Difference]: Without dead ends: 17787 [2021-07-13 18:23:18,470 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 67.5ms TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-07-13 18:23:18,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17787 states. [2021-07-13 18:23:18,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17787 to 13802. [2021-07-13 18:23:18,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13802 states, 13800 states have (on average 2.5967391304347824) internal successors, (35835), 13801 states have internal predecessors, (35835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:18,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13802 states to 13802 states and 35835 transitions. [2021-07-13 18:23:18,771 INFO L78 Accepts]: Start accepts. Automaton has 13802 states and 35835 transitions. Word has length 191 [2021-07-13 18:23:18,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:23:18,772 INFO L482 AbstractCegarLoop]: Abstraction has 13802 states and 35835 transitions. [2021-07-13 18:23:18,772 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 21.4) internal successors, (214), 10 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:18,772 INFO L276 IsEmpty]: Start isEmpty. Operand 13802 states and 35835 transitions. [2021-07-13 18:23:18,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-07-13 18:23:18,793 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:23:18,793 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] [2021-07-13 18:23:19,008 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-07-13 18:23:19,009 INFO L430 AbstractCegarLoop]: === Iteration 11 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:23:19,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:23:19,010 INFO L82 PathProgramCache]: Analyzing trace with hash 249164177, now seen corresponding path program 4 times [2021-07-13 18:23:19,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:23:19,010 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263968033] [2021-07-13 18:23:19,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:23:19,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:23:19,104 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 9 proven. 133 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-07-13 18:23:19,104 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:23:19,104 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263968033] [2021-07-13 18:23:19,104 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263968033] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:19,104 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102998980] [2021-07-13 18:23:19,104 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 18:23:19,256 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-13 18:23:19,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:23:19,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 10 conjunts are in the unsatisfiable core [2021-07-13 18:23:19,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:23:19,476 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 9 proven. 133 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-07-13 18:23:19,476 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102998980] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:19,476 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:23:19,476 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-07-13 18:23:19,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293561397] [2021-07-13 18:23:19,477 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-13 18:23:19,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:23:19,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-13 18:23:19,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-07-13 18:23:19,477 INFO L87 Difference]: Start difference. First operand 13802 states and 35835 transitions. Second operand has 12 states, 12 states have (on average 19.583333333333332) internal successors, (235), 12 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:19,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:23:19,715 INFO L93 Difference]: Finished difference Result 19137 states and 49609 transitions. [2021-07-13 18:23:19,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-13 18:23:19,716 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 19.583333333333332) internal successors, (235), 12 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 191 [2021-07-13 18:23:19,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:23:19,748 INFO L225 Difference]: With dead ends: 19137 [2021-07-13 18:23:19,748 INFO L226 Difference]: Without dead ends: 19137 [2021-07-13 18:23:19,749 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 109.3ms TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2021-07-13 18:23:19,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19137 states. [2021-07-13 18:23:19,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19137 to 13802. [2021-07-13 18:23:20,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13802 states, 13800 states have (on average 2.5967391304347824) internal successors, (35835), 13801 states have internal predecessors, (35835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:20,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13802 states to 13802 states and 35835 transitions. [2021-07-13 18:23:20,031 INFO L78 Accepts]: Start accepts. Automaton has 13802 states and 35835 transitions. Word has length 191 [2021-07-13 18:23:20,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:23:20,031 INFO L482 AbstractCegarLoop]: Abstraction has 13802 states and 35835 transitions. [2021-07-13 18:23:20,031 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 19.583333333333332) internal successors, (235), 12 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:20,031 INFO L276 IsEmpty]: Start isEmpty. Operand 13802 states and 35835 transitions. [2021-07-13 18:23:20,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-07-13 18:23:20,051 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:23:20,051 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] [2021-07-13 18:23:20,264 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-07-13 18:23:20,265 INFO L430 AbstractCegarLoop]: === Iteration 12 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:23:20,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:23:20,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1316096157, now seen corresponding path program 1 times [2021-07-13 18:23:20,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:23:20,266 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465283453] [2021-07-13 18:23:20,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:23:20,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:23:20,378 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 18:23:20,378 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:23:20,378 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465283453] [2021-07-13 18:23:20,378 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465283453] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:20,378 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854611419] [2021-07-13 18:23:20,378 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 18:23:20,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:23:20,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 12 conjunts are in the unsatisfiable core [2021-07-13 18:23:20,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:23:20,781 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 9 proven. 125 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-07-13 18:23:20,782 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854611419] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:20,782 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:23:20,782 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 11 [2021-07-13 18:23:20,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537807988] [2021-07-13 18:23:20,782 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-13 18:23:20,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:23:20,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-13 18:23:20,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-07-13 18:23:20,783 INFO L87 Difference]: Start difference. First operand 13802 states and 35835 transitions. Second operand has 11 states, 11 states have (on average 20.90909090909091) internal successors, (230), 11 states have internal predecessors, (230), 0 states have call successors, (0), 0 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 18:23:21,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:23:21,002 INFO L93 Difference]: Finished difference Result 24997 states and 64918 transitions. [2021-07-13 18:23:21,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-13 18:23:21,002 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 20.90909090909091) internal successors, (230), 11 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 220 [2021-07-13 18:23:21,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:23:21,052 INFO L225 Difference]: With dead ends: 24997 [2021-07-13 18:23:21,052 INFO L226 Difference]: Without dead ends: 24997 [2021-07-13 18:23:21,052 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 94.8ms TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2021-07-13 18:23:21,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24997 states. [2021-07-13 18:23:21,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24997 to 14962. [2021-07-13 18:23:21,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14962 states, 14960 states have (on average 2.606216577540107) internal successors, (38989), 14961 states have internal predecessors, (38989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:21,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14962 states to 14962 states and 38989 transitions. [2021-07-13 18:23:21,364 INFO L78 Accepts]: Start accepts. Automaton has 14962 states and 38989 transitions. Word has length 220 [2021-07-13 18:23:21,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:23:21,364 INFO L482 AbstractCegarLoop]: Abstraction has 14962 states and 38989 transitions. [2021-07-13 18:23:21,365 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 20.90909090909091) internal successors, (230), 11 states have internal predecessors, (230), 0 states have call successors, (0), 0 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 18:23:21,365 INFO L276 IsEmpty]: Start isEmpty. Operand 14962 states and 38989 transitions. [2021-07-13 18:23:21,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-07-13 18:23:21,388 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:23:21,388 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] [2021-07-13 18:23:21,599 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:23:21,599 INFO L430 AbstractCegarLoop]: === Iteration 13 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:23:21,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:23:21,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1317035050, now seen corresponding path program 5 times [2021-07-13 18:23:21,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:23:21,600 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338638961] [2021-07-13 18:23:21,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:23:21,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:23:21,738 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 15 proven. 415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:23:21,738 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:23:21,738 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338638961] [2021-07-13 18:23:21,738 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338638961] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:21,738 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842827154] [2021-07-13 18:23:21,738 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 18:23:21,901 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-07-13 18:23:21,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:23:21,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 12 conjunts are in the unsatisfiable core [2021-07-13 18:23:21,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:23:22,198 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 15 proven. 415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:23:22,199 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842827154] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:22,199 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:23:22,199 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-07-13 18:23:22,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739968477] [2021-07-13 18:23:22,199 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-07-13 18:23:22,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:23:22,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-07-13 18:23:22,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-07-13 18:23:22,200 INFO L87 Difference]: Start difference. First operand 14962 states and 38989 transitions. Second operand has 15 states, 15 states have (on average 18.066666666666666) internal successors, (271), 15 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:22,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:23:22,478 INFO L93 Difference]: Finished difference Result 20871 states and 54084 transitions. [2021-07-13 18:23:22,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-07-13 18:23:22,478 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 18.066666666666666) internal successors, (271), 15 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 224 [2021-07-13 18:23:22,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:23:22,515 INFO L225 Difference]: With dead ends: 20871 [2021-07-13 18:23:22,515 INFO L226 Difference]: Without dead ends: 20871 [2021-07-13 18:23:22,515 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 159.0ms TimeCoverageRelationStatistics Valid=241, Invalid=461, Unknown=0, NotChecked=0, Total=702 [2021-07-13 18:23:22,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20871 states. [2021-07-13 18:23:22,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20871 to 16764. [2021-07-13 18:23:22,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16764 states, 16762 states have (on average 2.6010619257845127) internal successors, (43599), 16763 states have internal predecessors, (43599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:22,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16764 states to 16764 states and 43599 transitions. [2021-07-13 18:23:22,793 INFO L78 Accepts]: Start accepts. Automaton has 16764 states and 43599 transitions. Word has length 224 [2021-07-13 18:23:22,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:23:22,794 INFO L482 AbstractCegarLoop]: Abstraction has 16764 states and 43599 transitions. [2021-07-13 18:23:22,794 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 18.066666666666666) internal successors, (271), 15 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:22,794 INFO L276 IsEmpty]: Start isEmpty. Operand 16764 states and 43599 transitions. [2021-07-13 18:23:22,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-07-13 18:23:22,818 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:23:22,818 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] [2021-07-13 18:23:23,035 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:23:23,035 INFO L430 AbstractCegarLoop]: === Iteration 14 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:23:23,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:23:23,036 INFO L82 PathProgramCache]: Analyzing trace with hash 143431510, now seen corresponding path program 5 times [2021-07-13 18:23:23,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:23:23,036 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061024290] [2021-07-13 18:23:23,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:23:23,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:23:23,125 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 12 proven. 253 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-07-13 18:23:23,126 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:23:23,126 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061024290] [2021-07-13 18:23:23,126 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061024290] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:23,126 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97137851] [2021-07-13 18:23:23,126 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 18:23:23,301 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-07-13 18:23:23,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:23:23,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 12 conjunts are in the unsatisfiable core [2021-07-13 18:23:23,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:23:23,538 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 18:23:23,538 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97137851] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:23,538 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:23:23,538 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 12 [2021-07-13 18:23:23,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810023059] [2021-07-13 18:23:23,539 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-13 18:23:23,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:23:23,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-13 18:23:23,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-07-13 18:23:23,539 INFO L87 Difference]: Start difference. First operand 16764 states and 43599 transitions. Second operand has 12 states, 12 states have (on average 20.666666666666668) internal successors, (248), 12 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:23,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:23:23,746 INFO L93 Difference]: Finished difference Result 23844 states and 61943 transitions. [2021-07-13 18:23:23,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-13 18:23:23,747 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 20.666666666666668) internal successors, (248), 12 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 225 [2021-07-13 18:23:23,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:23:23,793 INFO L225 Difference]: With dead ends: 23844 [2021-07-13 18:23:23,793 INFO L226 Difference]: Without dead ends: 23844 [2021-07-13 18:23:23,794 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 93.1ms TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2021-07-13 18:23:23,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23844 states. [2021-07-13 18:23:24,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23844 to 18704. [2021-07-13 18:23:24,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18704 states, 18702 states have (on average 2.6167254839054648) internal successors, (48938), 18703 states have internal predecessors, (48938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:24,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18704 states to 18704 states and 48938 transitions. [2021-07-13 18:23:24,181 INFO L78 Accepts]: Start accepts. Automaton has 18704 states and 48938 transitions. Word has length 225 [2021-07-13 18:23:24,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:23:24,182 INFO L482 AbstractCegarLoop]: Abstraction has 18704 states and 48938 transitions. [2021-07-13 18:23:24,182 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 20.666666666666668) internal successors, (248), 12 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:24,182 INFO L276 IsEmpty]: Start isEmpty. Operand 18704 states and 48938 transitions. [2021-07-13 18:23:24,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-07-13 18:23:24,205 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:23:24,205 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] [2021-07-13 18:23:24,406 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-07-13 18:23:24,407 INFO L430 AbstractCegarLoop]: === Iteration 15 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:23:24,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:23:24,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1063343500, now seen corresponding path program 6 times [2021-07-13 18:23:24,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:23:24,408 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745858634] [2021-07-13 18:23:24,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:23:24,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:23:24,511 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 18:23:24,512 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:23:24,512 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745858634] [2021-07-13 18:23:24,512 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745858634] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:24,512 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560081508] [2021-07-13 18:23:24,512 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 18:23:24,735 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-07-13 18:23:24,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:23:24,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 12 conjunts are in the unsatisfiable core [2021-07-13 18:23:24,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:23:24,980 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 18:23:24,980 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560081508] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:24,980 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:23:24,980 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-07-13 18:23:24,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909179417] [2021-07-13 18:23:24,980 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-13 18:23:24,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:23:24,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-13 18:23:24,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-07-13 18:23:24,981 INFO L87 Difference]: Start difference. First operand 18704 states and 48938 transitions. Second operand has 12 states, 12 states have (on average 20.666666666666668) internal successors, (248), 12 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:25,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:23:25,213 INFO L93 Difference]: Finished difference Result 30389 states and 79003 transitions. [2021-07-13 18:23:25,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-13 18:23:25,214 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 20.666666666666668) internal successors, (248), 12 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 225 [2021-07-13 18:23:25,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:23:25,271 INFO L225 Difference]: With dead ends: 30389 [2021-07-13 18:23:25,271 INFO L226 Difference]: Without dead ends: 30389 [2021-07-13 18:23:25,271 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 89.4ms TimeCoverageRelationStatistics Valid=135, Invalid=327, Unknown=0, NotChecked=0, Total=462 [2021-07-13 18:23:25,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30389 states. [2021-07-13 18:23:25,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30389 to 19964. [2021-07-13 18:23:25,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19964 states, 19962 states have (on average 2.624336238853822) internal successors, (52387), 19963 states have internal predecessors, (52387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:25,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19964 states to 19964 states and 52387 transitions. [2021-07-13 18:23:25,678 INFO L78 Accepts]: Start accepts. Automaton has 19964 states and 52387 transitions. Word has length 225 [2021-07-13 18:23:25,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:23:25,680 INFO L482 AbstractCegarLoop]: Abstraction has 19964 states and 52387 transitions. [2021-07-13 18:23:25,680 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 20.666666666666668) internal successors, (248), 12 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:25,680 INFO L276 IsEmpty]: Start isEmpty. Operand 19964 states and 52387 transitions. [2021-07-13 18:23:25,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-07-13 18:23:25,704 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:23:25,704 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] [2021-07-13 18:23:25,905 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-07-13 18:23:25,905 INFO L430 AbstractCegarLoop]: === Iteration 16 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:23:25,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:23:25,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1518524624, now seen corresponding path program 7 times [2021-07-13 18:23:25,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:23:25,906 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676329694] [2021-07-13 18:23:25,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:23:25,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:23:25,993 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 12 proven. 250 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-07-13 18:23:25,994 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:23:25,994 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676329694] [2021-07-13 18:23:25,994 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676329694] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:25,994 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793806846] [2021-07-13 18:23:25,994 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 18:23:26,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:23:26,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 12 conjunts are in the unsatisfiable core [2021-07-13 18:23:26,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:23:26,367 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 12 proven. 250 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-07-13 18:23:26,367 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793806846] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:26,367 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:23:26,368 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-07-13 18:23:26,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696710175] [2021-07-13 18:23:26,368 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-07-13 18:23:26,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:23:26,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-07-13 18:23:26,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-07-13 18:23:26,369 INFO L87 Difference]: Start difference. First operand 19964 states and 52387 transitions. Second operand has 14 states, 14 states have (on average 19.214285714285715) internal successors, (269), 14 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:26,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:23:26,636 INFO L93 Difference]: Finished difference Result 29709 states and 77502 transitions. [2021-07-13 18:23:26,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-07-13 18:23:26,637 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 19.214285714285715) internal successors, (269), 14 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 225 [2021-07-13 18:23:26,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:23:26,689 INFO L225 Difference]: With dead ends: 29709 [2021-07-13 18:23:26,689 INFO L226 Difference]: Without dead ends: 29709 [2021-07-13 18:23:26,690 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 148.4ms TimeCoverageRelationStatistics Valid=206, Invalid=550, Unknown=0, NotChecked=0, Total=756 [2021-07-13 18:23:26,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29709 states. [2021-07-13 18:23:26,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29709 to 19964. [2021-07-13 18:23:27,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19964 states, 19962 states have (on average 2.624336238853822) internal successors, (52387), 19963 states have internal predecessors, (52387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:27,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19964 states to 19964 states and 52387 transitions. [2021-07-13 18:23:27,060 INFO L78 Accepts]: Start accepts. Automaton has 19964 states and 52387 transitions. Word has length 225 [2021-07-13 18:23:27,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:23:27,060 INFO L482 AbstractCegarLoop]: Abstraction has 19964 states and 52387 transitions. [2021-07-13 18:23:27,060 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 19.214285714285715) internal successors, (269), 14 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:27,061 INFO L276 IsEmpty]: Start isEmpty. Operand 19964 states and 52387 transitions. [2021-07-13 18:23:27,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2021-07-13 18:23:27,089 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:23:27,089 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] [2021-07-13 18:23:27,290 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-07-13 18:23:27,290 INFO L430 AbstractCegarLoop]: === Iteration 17 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:23:27,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:23:27,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1023520124, now seen corresponding path program 2 times [2021-07-13 18:23:27,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:23:27,290 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737923388] [2021-07-13 18:23:27,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:23:27,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:23:27,386 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 18:23:27,386 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:23:27,386 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737923388] [2021-07-13 18:23:27,387 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737923388] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:27,387 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299516327] [2021-07-13 18:23:27,387 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 18:23:27,512 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-13 18:23:27,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:23:27,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 14 conjunts are in the unsatisfiable core [2021-07-13 18:23:27,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:23:27,763 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 12 proven. 242 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-07-13 18:23:27,763 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299516327] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:27,763 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:23:27,763 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 13 [2021-07-13 18:23:27,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757520413] [2021-07-13 18:23:27,764 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-07-13 18:23:27,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:23:27,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-07-13 18:23:27,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-07-13 18:23:27,764 INFO L87 Difference]: Start difference. First operand 19964 states and 52387 transitions. Second operand has 13 states, 13 states have (on average 20.307692307692307) internal successors, (264), 13 states have internal predecessors, (264), 0 states have call successors, (0), 0 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 18:23:28,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:23:28,040 INFO L93 Difference]: Finished difference Result 33419 states and 87480 transitions. [2021-07-13 18:23:28,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-07-13 18:23:28,040 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 20.307692307692307) internal successors, (264), 13 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 254 [2021-07-13 18:23:28,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:23:28,106 INFO L225 Difference]: With dead ends: 33419 [2021-07-13 18:23:28,106 INFO L226 Difference]: Without dead ends: 33419 [2021-07-13 18:23:28,107 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 112.6ms TimeCoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:23:28,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33419 states. [2021-07-13 18:23:28,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33419 to 19964. [2021-07-13 18:23:28,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19964 states, 19962 states have (on average 2.624336238853822) internal successors, (52387), 19963 states have internal predecessors, (52387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:28,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19964 states to 19964 states and 52387 transitions. [2021-07-13 18:23:28,649 INFO L78 Accepts]: Start accepts. Automaton has 19964 states and 52387 transitions. Word has length 254 [2021-07-13 18:23:28,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:23:28,650 INFO L482 AbstractCegarLoop]: Abstraction has 19964 states and 52387 transitions. [2021-07-13 18:23:28,650 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 20.307692307692307) internal successors, (264), 13 states have internal predecessors, (264), 0 states have call successors, (0), 0 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 18:23:28,650 INFO L276 IsEmpty]: Start isEmpty. Operand 19964 states and 52387 transitions. [2021-07-13 18:23:28,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2021-07-13 18:23:28,675 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:23:28,675 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] [2021-07-13 18:23:28,876 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:23:28,877 INFO L430 AbstractCegarLoop]: === Iteration 18 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:23:28,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:23:28,877 INFO L82 PathProgramCache]: Analyzing trace with hash -378172578, now seen corresponding path program 3 times [2021-07-13 18:23:28,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:23:28,877 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445136998] [2021-07-13 18:23:28,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:23:28,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:23:28,963 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 12 proven. 242 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-07-13 18:23:28,963 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:23:28,963 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445136998] [2021-07-13 18:23:28,963 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445136998] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:28,963 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043347025] [2021-07-13 18:23:28,963 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 18:23:29,061 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-07-13 18:23:29,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:23:29,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 11 conjunts are in the unsatisfiable core [2021-07-13 18:23:29,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:23:29,340 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-07-13 18:23:29,341 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043347025] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:23:29,341 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-07-13 18:23:29,341 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2021-07-13 18:23:29,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568577589] [2021-07-13 18:23:29,341 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-13 18:23:29,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:23:29,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-13 18:23:29,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-07-13 18:23:29,342 INFO L87 Difference]: Start difference. First operand 19964 states and 52387 transitions. Second operand has 6 states, 6 states have (on average 28.666666666666668) internal successors, (172), 6 states have internal predecessors, (172), 0 states have call successors, (0), 0 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 18:23:29,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:23:29,512 INFO L93 Difference]: Finished difference Result 26914 states and 70438 transitions. [2021-07-13 18:23:29,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-13 18:23:29,512 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.666666666666668) internal successors, (172), 6 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 254 [2021-07-13 18:23:29,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:23:29,563 INFO L225 Difference]: With dead ends: 26914 [2021-07-13 18:23:29,564 INFO L226 Difference]: Without dead ends: 26914 [2021-07-13 18:23:29,564 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 260 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 108.4ms TimeCoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2021-07-13 18:23:29,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26914 states. [2021-07-13 18:23:29,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26914 to 20644. [2021-07-13 18:23:29,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20644 states, 20642 states have (on average 2.627700804185641) internal successors, (54241), 20643 states have internal predecessors, (54241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:29,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20644 states to 20644 states and 54241 transitions. [2021-07-13 18:23:29,956 INFO L78 Accepts]: Start accepts. Automaton has 20644 states and 54241 transitions. Word has length 254 [2021-07-13 18:23:29,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:23:29,957 INFO L482 AbstractCegarLoop]: Abstraction has 20644 states and 54241 transitions. [2021-07-13 18:23:29,957 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 28.666666666666668) internal successors, (172), 6 states have internal predecessors, (172), 0 states have call successors, (0), 0 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 18:23:29,957 INFO L276 IsEmpty]: Start isEmpty. Operand 20644 states and 54241 transitions. [2021-07-13 18:23:29,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-07-13 18:23:29,984 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:23:29,985 INFO L508 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:23:30,193 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-07-13 18:23:30,193 INFO L430 AbstractCegarLoop]: === Iteration 19 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:23:30,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:23:30,193 INFO L82 PathProgramCache]: Analyzing trace with hash -518142441, now seen corresponding path program 6 times [2021-07-13 18:23:30,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:23:30,194 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344467447] [2021-07-13 18:23:30,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:23:30,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:23:30,304 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 18 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:23:30,304 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:23:30,304 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344467447] [2021-07-13 18:23:30,304 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344467447] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:30,305 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236652495] [2021-07-13 18:23:30,305 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:23:30,647 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-07-13 18:23:30,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:23:30,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 14 conjunts are in the unsatisfiable core [2021-07-13 18:23:30,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:23:30,932 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 18 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:23:30,932 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236652495] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:30,932 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:23:30,932 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-07-13 18:23:30,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345199928] [2021-07-13 18:23:30,932 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 18:23:30,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:23:30,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 18:23:30,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-07-13 18:23:30,933 INFO L87 Difference]: Start difference. First operand 20644 states and 54241 transitions. Second operand has 17 states, 17 states have (on average 17.941176470588236) internal successors, (305), 17 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:31,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:23:31,235 INFO L93 Difference]: Finished difference Result 27943 states and 72966 transitions. [2021-07-13 18:23:31,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-07-13 18:23:31,235 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 17.941176470588236) internal successors, (305), 17 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 258 [2021-07-13 18:23:31,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:23:31,287 INFO L225 Difference]: With dead ends: 27943 [2021-07-13 18:23:31,288 INFO L226 Difference]: Without dead ends: 27943 [2021-07-13 18:23:31,288 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 169.1ms TimeCoverageRelationStatistics Valid=316, Invalid=614, Unknown=0, NotChecked=0, Total=930 [2021-07-13 18:23:31,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27943 states. [2021-07-13 18:23:31,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27943 to 22446. [2021-07-13 18:23:31,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22446 states, 22444 states have (on average 2.62212618071645) internal successors, (58851), 22445 states have internal predecessors, (58851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:31,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22446 states to 22446 states and 58851 transitions. [2021-07-13 18:23:31,741 INFO L78 Accepts]: Start accepts. Automaton has 22446 states and 58851 transitions. Word has length 258 [2021-07-13 18:23:31,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:23:31,741 INFO L482 AbstractCegarLoop]: Abstraction has 22446 states and 58851 transitions. [2021-07-13 18:23:31,741 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 17.941176470588236) internal successors, (305), 17 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:31,742 INFO L276 IsEmpty]: Start isEmpty. Operand 22446 states and 58851 transitions. [2021-07-13 18:23:31,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-07-13 18:23:31,771 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:23:31,771 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, 1, 1, 1, 1, 1, 1, 1, 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 18:23:31,972 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:23:31,972 INFO L430 AbstractCegarLoop]: === Iteration 20 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:23:31,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:23:31,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1618093673, now seen corresponding path program 8 times [2021-07-13 18:23:31,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:23:31,973 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494809445] [2021-07-13 18:23:31,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:23:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:23:32,078 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 15 proven. 404 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-07-13 18:23:32,078 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:23:32,078 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494809445] [2021-07-13 18:23:32,078 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494809445] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:32,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441951977] [2021-07-13 18:23:32,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:23:32,197 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-13 18:23:32,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:23:32,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 14 conjunts are in the unsatisfiable core [2021-07-13 18:23:32,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:23:32,474 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 15 proven. 381 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-07-13 18:23:32,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441951977] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:32,474 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:23:32,475 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 14 [2021-07-13 18:23:32,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153493885] [2021-07-13 18:23:32,475 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-07-13 18:23:32,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:23:32,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-07-13 18:23:32,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-07-13 18:23:32,476 INFO L87 Difference]: Start difference. First operand 22446 states and 58851 transitions. Second operand has 14 states, 14 states have (on average 20.142857142857142) internal successors, (282), 14 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:32,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:23:32,741 INFO L93 Difference]: Finished difference Result 29176 states and 76036 transitions. [2021-07-13 18:23:32,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-13 18:23:32,741 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 20.142857142857142) internal successors, (282), 14 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 259 [2021-07-13 18:23:32,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:23:32,795 INFO L225 Difference]: With dead ends: 29176 [2021-07-13 18:23:32,795 INFO L226 Difference]: Without dead ends: 29176 [2021-07-13 18:23:32,795 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 123.2ms TimeCoverageRelationStatistics Valid=194, Invalid=456, Unknown=0, NotChecked=0, Total=650 [2021-07-13 18:23:32,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29176 states. [2021-07-13 18:23:33,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29176 to 23126. [2021-07-13 18:23:33,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23126 states, 23124 states have (on average 2.626751427088739) internal successors, (60741), 23125 states have internal predecessors, (60741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:33,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23126 states to 23126 states and 60741 transitions. [2021-07-13 18:23:33,349 INFO L78 Accepts]: Start accepts. Automaton has 23126 states and 60741 transitions. Word has length 259 [2021-07-13 18:23:33,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:23:33,350 INFO L482 AbstractCegarLoop]: Abstraction has 23126 states and 60741 transitions. [2021-07-13 18:23:33,350 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 20.142857142857142) internal successors, (282), 14 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:33,350 INFO L276 IsEmpty]: Start isEmpty. Operand 23126 states and 60741 transitions. [2021-07-13 18:23:33,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-07-13 18:23:33,376 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:23:33,376 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, 1, 1, 1, 1, 1, 1, 1, 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 18:23:33,577 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:23:33,577 INFO L430 AbstractCegarLoop]: === Iteration 21 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:23:33,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:23:33,577 INFO L82 PathProgramCache]: Analyzing trace with hash -155081419, now seen corresponding path program 9 times [2021-07-13 18:23:33,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:23:33,578 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627308786] [2021-07-13 18:23:33,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:23:33,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:23:33,989 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 15 proven. 381 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-07-13 18:23:33,989 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:23:33,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627308786] [2021-07-13 18:23:33,990 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627308786] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:33,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688842842] [2021-07-13 18:23:33,990 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:23:34,257 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-07-13 18:23:34,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:23:34,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 14 conjunts are in the unsatisfiable core [2021-07-13 18:23:34,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:23:34,623 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 15 proven. 381 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-07-13 18:23:34,623 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688842842] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:34,623 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:23:34,624 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-07-13 18:23:34,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803579249] [2021-07-13 18:23:34,625 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-07-13 18:23:34,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:23:34,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-07-13 18:23:34,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-07-13 18:23:34,641 INFO L87 Difference]: Start difference. First operand 23126 states and 60741 transitions. Second operand has 14 states, 14 states have (on average 20.142857142857142) internal successors, (282), 14 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:35,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:23:35,039 INFO L93 Difference]: Finished difference Result 34101 states and 89002 transitions. [2021-07-13 18:23:35,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-13 18:23:35,039 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 20.142857142857142) internal successors, (282), 14 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 259 [2021-07-13 18:23:35,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:23:35,107 INFO L225 Difference]: With dead ends: 34101 [2021-07-13 18:23:35,107 INFO L226 Difference]: Without dead ends: 34101 [2021-07-13 18:23:35,107 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 168.6ms TimeCoverageRelationStatistics Valid=192, Invalid=458, Unknown=0, NotChecked=0, Total=650 [2021-07-13 18:23:35,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34101 states. [2021-07-13 18:23:35,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34101 to 25066. [2021-07-13 18:23:35,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25066 states, 25064 states have (on average 2.6364506862432173) internal successors, (66080), 25065 states have internal predecessors, (66080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:35,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25066 states to 25066 states and 66080 transitions. [2021-07-13 18:23:35,848 INFO L78 Accepts]: Start accepts. Automaton has 25066 states and 66080 transitions. Word has length 259 [2021-07-13 18:23:35,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:23:35,865 INFO L482 AbstractCegarLoop]: Abstraction has 25066 states and 66080 transitions. [2021-07-13 18:23:35,865 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 20.142857142857142) internal successors, (282), 14 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:35,865 INFO L276 IsEmpty]: Start isEmpty. Operand 25066 states and 66080 transitions. [2021-07-13 18:23:35,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-07-13 18:23:35,937 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:23:35,937 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, 1, 1, 1, 1, 1, 1, 1, 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 18:23:36,154 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-07-13 18:23:36,154 INFO L430 AbstractCegarLoop]: === Iteration 22 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:23:36,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:23:36,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1361856429, now seen corresponding path program 10 times [2021-07-13 18:23:36,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:23:36,155 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247712193] [2021-07-13 18:23:36,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:23:36,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:23:36,338 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 15 proven. 381 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-07-13 18:23:36,339 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:23:36,339 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247712193] [2021-07-13 18:23:36,339 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247712193] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:36,339 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436453576] [2021-07-13 18:23:36,339 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:23:36,723 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-13 18:23:36,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:23:36,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 14 conjunts are in the unsatisfiable core [2021-07-13 18:23:36,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:23:37,037 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 15 proven. 381 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-07-13 18:23:37,037 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436453576] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:37,037 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:23:37,037 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-07-13 18:23:37,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216136870] [2021-07-13 18:23:37,038 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-07-13 18:23:37,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:23:37,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-07-13 18:23:37,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-07-13 18:23:37,038 INFO L87 Difference]: Start difference. First operand 25066 states and 66080 transitions. Second operand has 14 states, 14 states have (on average 20.142857142857142) internal successors, (282), 14 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:37,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:23:37,388 INFO L93 Difference]: Finished difference Result 34341 states and 90071 transitions. [2021-07-13 18:23:37,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-07-13 18:23:37,388 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 20.142857142857142) internal successors, (282), 14 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 259 [2021-07-13 18:23:37,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:23:37,462 INFO L225 Difference]: With dead ends: 34341 [2021-07-13 18:23:37,463 INFO L226 Difference]: Without dead ends: 34341 [2021-07-13 18:23:37,463 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 184.6ms TimeCoverageRelationStatistics Valid=199, Invalid=503, Unknown=0, NotChecked=0, Total=702 [2021-07-13 18:23:37,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34341 states. [2021-07-13 18:23:37,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34341 to 26326. [2021-07-13 18:23:37,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26326 states, 26324 states have (on average 2.641277921288558) internal successors, (69529), 26325 states have internal predecessors, (69529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:38,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26326 states to 26326 states and 69529 transitions. [2021-07-13 18:23:38,063 INFO L78 Accepts]: Start accepts. Automaton has 26326 states and 69529 transitions. Word has length 259 [2021-07-13 18:23:38,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:23:38,064 INFO L482 AbstractCegarLoop]: Abstraction has 26326 states and 69529 transitions. [2021-07-13 18:23:38,064 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 20.142857142857142) internal successors, (282), 14 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:38,064 INFO L276 IsEmpty]: Start isEmpty. Operand 26326 states and 69529 transitions. [2021-07-13 18:23:38,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2021-07-13 18:23:38,108 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:23:38,108 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] [2021-07-13 18:23:38,309 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:23:38,309 INFO L430 AbstractCegarLoop]: === Iteration 23 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:23:38,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:23:38,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1010690922, now seen corresponding path program 4 times [2021-07-13 18:23:38,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:23:38,310 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412768063] [2021-07-13 18:23:38,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:23:38,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:23:38,409 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 53 proven. 217 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-07-13 18:23:38,410 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:23:38,410 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412768063] [2021-07-13 18:23:38,410 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412768063] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:38,410 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333580462] [2021-07-13 18:23:38,410 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:23:38,609 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-13 18:23:38,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:23:38,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 16 conjunts are in the unsatisfiable core [2021-07-13 18:23:38,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:23:38,992 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 53 proven. 217 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-07-13 18:23:38,992 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333580462] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:38,992 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:23:38,993 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-07-13 18:23:38,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790903608] [2021-07-13 18:23:38,993 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-07-13 18:23:38,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:23:38,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-07-13 18:23:38,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-07-13 18:23:38,994 INFO L87 Difference]: Start difference. First operand 26326 states and 69529 transitions. Second operand has 13 states, 13 states have (on average 20.615384615384617) internal successors, (268), 13 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:39,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:23:39,360 INFO L93 Difference]: Finished difference Result 41691 states and 109020 transitions. [2021-07-13 18:23:39,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-07-13 18:23:39,361 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 20.615384615384617) internal successors, (268), 13 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 283 [2021-07-13 18:23:39,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:23:39,434 INFO L225 Difference]: With dead ends: 41691 [2021-07-13 18:23:39,435 INFO L226 Difference]: Without dead ends: 41691 [2021-07-13 18:23:39,435 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 180.7ms TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:23:39,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41691 states. [2021-07-13 18:23:39,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41691 to 29426. [2021-07-13 18:23:39,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29426 states, 29424 states have (on average 2.6516449157150626) internal successors, (78022), 29425 states have internal predecessors, (78022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:40,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29426 states to 29426 states and 78022 transitions. [2021-07-13 18:23:40,009 INFO L78 Accepts]: Start accepts. Automaton has 29426 states and 78022 transitions. Word has length 283 [2021-07-13 18:23:40,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:23:40,010 INFO L482 AbstractCegarLoop]: Abstraction has 29426 states and 78022 transitions. [2021-07-13 18:23:40,010 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 20.615384615384617) internal successors, (268), 13 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:40,010 INFO L276 IsEmpty]: Start isEmpty. Operand 29426 states and 78022 transitions. [2021-07-13 18:23:40,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2021-07-13 18:23:40,057 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:23:40,057 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:23:40,258 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-07-13 18:23:40,258 INFO L430 AbstractCegarLoop]: === Iteration 24 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:23:40,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:23:40,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1176701279, now seen corresponding path program 5 times [2021-07-13 18:23:40,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:23:40,259 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705226230] [2021-07-13 18:23:40,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:23:40,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:23:40,377 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 15 proven. 396 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-07-13 18:23:40,377 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:23:40,377 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705226230] [2021-07-13 18:23:40,377 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705226230] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:40,377 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479243106] [2021-07-13 18:23:40,377 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:23:40,722 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-07-13 18:23:40,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:23:40,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 16 conjunts are in the unsatisfiable core [2021-07-13 18:23:40,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:23:41,021 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 15 proven. 373 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-07-13 18:23:41,022 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479243106] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:41,022 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:23:41,022 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 13 [2021-07-13 18:23:41,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269482302] [2021-07-13 18:23:41,022 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-07-13 18:23:41,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:23:41,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-07-13 18:23:41,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-07-13 18:23:41,023 INFO L87 Difference]: Start difference. First operand 29426 states and 78022 transitions. Second operand has 13 states, 13 states have (on average 21.307692307692307) internal successors, (277), 13 states have internal predecessors, (277), 0 states have call successors, (0), 0 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 18:23:41,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:23:41,357 INFO L93 Difference]: Finished difference Result 39436 states and 103060 transitions. [2021-07-13 18:23:41,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-07-13 18:23:41,361 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 21.307692307692307) internal successors, (277), 13 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 288 [2021-07-13 18:23:41,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:23:41,431 INFO L225 Difference]: With dead ends: 39436 [2021-07-13 18:23:41,431 INFO L226 Difference]: Without dead ends: 39436 [2021-07-13 18:23:41,431 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 111.9ms TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:23:41,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39436 states. [2021-07-13 18:23:41,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39436 to 27486. [2021-07-13 18:23:41,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27486 states, 27484 states have (on average 2.6445568330665115) internal successors, (72683), 27485 states have internal predecessors, (72683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:41,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27486 states to 27486 states and 72683 transitions. [2021-07-13 18:23:41,988 INFO L78 Accepts]: Start accepts. Automaton has 27486 states and 72683 transitions. Word has length 288 [2021-07-13 18:23:41,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:23:41,989 INFO L482 AbstractCegarLoop]: Abstraction has 27486 states and 72683 transitions. [2021-07-13 18:23:41,989 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 21.307692307692307) internal successors, (277), 13 states have internal predecessors, (277), 0 states have call successors, (0), 0 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 18:23:41,989 INFO L276 IsEmpty]: Start isEmpty. Operand 27486 states and 72683 transitions. [2021-07-13 18:23:42,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2021-07-13 18:23:42,030 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:23:42,030 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:23:42,231 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-07-13 18:23:42,231 INFO L430 AbstractCegarLoop]: === Iteration 25 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:23:42,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:23:42,231 INFO L82 PathProgramCache]: Analyzing trace with hash 129283205, now seen corresponding path program 6 times [2021-07-13 18:23:42,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:23:42,231 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213059424] [2021-07-13 18:23:42,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:23:42,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:23:42,449 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 54 proven. 388 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-07-13 18:23:42,449 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:23:42,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213059424] [2021-07-13 18:23:42,449 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213059424] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:42,450 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893150346] [2021-07-13 18:23:42,450 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:23:42,638 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-07-13 18:23:42,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:23:42,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 19 conjunts are in the unsatisfiable core [2021-07-13 18:23:42,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:23:43,034 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 250 proven. 59 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-07-13 18:23:43,035 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893150346] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:43,035 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:23:43,035 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 22 [2021-07-13 18:23:43,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785400557] [2021-07-13 18:23:43,035 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-07-13 18:23:43,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:23:43,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-07-13 18:23:43,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-07-13 18:23:43,036 INFO L87 Difference]: Start difference. First operand 27486 states and 72683 transitions. Second operand has 22 states, 22 states have (on average 21.136363636363637) internal successors, (465), 22 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:43,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:23:43,765 INFO L93 Difference]: Finished difference Result 56766 states and 149064 transitions. [2021-07-13 18:23:43,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-07-13 18:23:43,765 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 21.136363636363637) internal successors, (465), 22 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 288 [2021-07-13 18:23:43,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:23:43,953 INFO L225 Difference]: With dead ends: 56766 [2021-07-13 18:23:43,953 INFO L226 Difference]: Without dead ends: 56766 [2021-07-13 18:23:43,954 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 313 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 458.0ms TimeCoverageRelationStatistics Valid=623, Invalid=2029, Unknown=0, NotChecked=0, Total=2652 [2021-07-13 18:23:44,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56766 states. [2021-07-13 18:23:44,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56766 to 30626. [2021-07-13 18:23:44,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30626 states, 30624 states have (on average 2.658894984326019) internal successors, (81426), 30625 states have internal predecessors, (81426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:44,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30626 states to 30626 states and 81426 transitions. [2021-07-13 18:23:44,625 INFO L78 Accepts]: Start accepts. Automaton has 30626 states and 81426 transitions. Word has length 288 [2021-07-13 18:23:44,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:23:44,625 INFO L482 AbstractCegarLoop]: Abstraction has 30626 states and 81426 transitions. [2021-07-13 18:23:44,626 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 21.136363636363637) internal successors, (465), 22 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:44,626 INFO L276 IsEmpty]: Start isEmpty. Operand 30626 states and 81426 transitions. [2021-07-13 18:23:44,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2021-07-13 18:23:44,668 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:23:44,668 INFO L508 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:23:44,872 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:23:44,873 INFO L430 AbstractCegarLoop]: === Iteration 26 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:23:44,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:23:44,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1883498472, now seen corresponding path program 7 times [2021-07-13 18:23:44,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:23:44,873 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428946817] [2021-07-13 18:23:44,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:23:44,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:23:45,004 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 21 proven. 819 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:23:45,004 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:23:45,005 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428946817] [2021-07-13 18:23:45,005 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428946817] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:45,005 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569765350] [2021-07-13 18:23:45,005 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:23:45,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:23:45,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 16 conjunts are in the unsatisfiable core [2021-07-13 18:23:45,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:23:45,264 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2021-07-13 18:23:45,561 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 21 proven. 819 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:23:45,561 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569765350] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:45,562 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:23:45,562 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-07-13 18:23:45,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309184003] [2021-07-13 18:23:45,562 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 18:23:45,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:23:45,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 18:23:45,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-07-13 18:23:45,563 INFO L87 Difference]: Start difference. First operand 30626 states and 81426 transitions. Second operand has 19 states, 19 states have (on average 17.842105263157894) internal successors, (339), 19 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:46,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:23:46,040 INFO L93 Difference]: Finished difference Result 39095 states and 103168 transitions. [2021-07-13 18:23:46,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-13 18:23:46,041 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 17.842105263157894) internal successors, (339), 19 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 292 [2021-07-13 18:23:46,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:23:46,120 INFO L225 Difference]: With dead ends: 39095 [2021-07-13 18:23:46,120 INFO L226 Difference]: Without dead ends: 39095 [2021-07-13 18:23:46,121 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 208.1ms TimeCoverageRelationStatistics Valid=401, Invalid=789, Unknown=0, NotChecked=0, Total=1190 [2021-07-13 18:23:46,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39095 states. [2021-07-13 18:23:46,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39095 to 33108. [2021-07-13 18:23:46,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33108 states, 33106 states have (on average 2.6558931915664834) internal successors, (87926), 33107 states have internal predecessors, (87926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:46,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33108 states to 33108 states and 87926 transitions. [2021-07-13 18:23:46,783 INFO L78 Accepts]: Start accepts. Automaton has 33108 states and 87926 transitions. Word has length 292 [2021-07-13 18:23:46,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:23:46,783 INFO L482 AbstractCegarLoop]: Abstraction has 33108 states and 87926 transitions. [2021-07-13 18:23:46,783 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 17.842105263157894) internal successors, (339), 19 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:46,783 INFO L276 IsEmpty]: Start isEmpty. Operand 33108 states and 87926 transitions. [2021-07-13 18:23:46,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-07-13 18:23:46,829 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:23:46,830 INFO L508 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:23:47,030 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-07-13 18:23:47,030 INFO L430 AbstractCegarLoop]: === Iteration 27 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:23:47,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:23:47,031 INFO L82 PathProgramCache]: Analyzing trace with hash 885476248, now seen corresponding path program 11 times [2021-07-13 18:23:47,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:23:47,031 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291499105] [2021-07-13 18:23:47,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:23:47,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:23:47,290 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 18 proven. 589 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-07-13 18:23:47,290 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:23:47,290 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291499105] [2021-07-13 18:23:47,290 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291499105] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:47,290 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731821758] [2021-07-13 18:23:47,291 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:23:47,457 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-07-13 18:23:47,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:23:47,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 16 conjunts are in the unsatisfiable core [2021-07-13 18:23:47,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:23:47,758 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 18 proven. 566 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-07-13 18:23:47,758 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731821758] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:47,758 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:23:47,759 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 16 [2021-07-13 18:23:47,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576639690] [2021-07-13 18:23:47,759 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 18:23:47,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:23:47,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 18:23:47,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-07-13 18:23:47,760 INFO L87 Difference]: Start difference. First operand 33108 states and 87926 transitions. Second operand has 16 states, 16 states have (on average 19.75) internal successors, (316), 16 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:48,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:23:48,128 INFO L93 Difference]: Finished difference Result 41038 states and 107978 transitions. [2021-07-13 18:23:48,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-13 18:23:48,128 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 19.75) internal successors, (316), 16 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 293 [2021-07-13 18:23:48,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:23:48,203 INFO L225 Difference]: With dead ends: 41038 [2021-07-13 18:23:48,203 INFO L226 Difference]: Without dead ends: 41038 [2021-07-13 18:23:48,203 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 153.1ms TimeCoverageRelationStatistics Valid=261, Invalid=609, Unknown=0, NotChecked=0, Total=870 [2021-07-13 18:23:48,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41038 states. [2021-07-13 18:23:48,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41038 to 33108. [2021-07-13 18:23:48,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33108 states, 33106 states have (on average 2.6558931915664834) internal successors, (87926), 33107 states have internal predecessors, (87926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:48,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33108 states to 33108 states and 87926 transitions. [2021-07-13 18:23:48,927 INFO L78 Accepts]: Start accepts. Automaton has 33108 states and 87926 transitions. Word has length 293 [2021-07-13 18:23:48,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:23:48,928 INFO L482 AbstractCegarLoop]: Abstraction has 33108 states and 87926 transitions. [2021-07-13 18:23:48,928 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 19.75) internal successors, (316), 16 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:48,928 INFO L276 IsEmpty]: Start isEmpty. Operand 33108 states and 87926 transitions. [2021-07-13 18:23:48,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-07-13 18:23:48,977 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:23:48,977 INFO L508 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:23:49,178 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:23:49,178 INFO L430 AbstractCegarLoop]: === Iteration 28 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:23:49,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:23:49,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1494134710, now seen corresponding path program 12 times [2021-07-13 18:23:49,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:23:49,179 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704847960] [2021-07-13 18:23:49,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:23:49,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:23:49,399 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 18 proven. 566 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-07-13 18:23:49,399 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:23:49,399 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704847960] [2021-07-13 18:23:49,399 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704847960] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:49,399 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853534163] [2021-07-13 18:23:49,400 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:23:49,608 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-07-13 18:23:49,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:23:49,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 16 conjunts are in the unsatisfiable core [2021-07-13 18:23:49,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:23:49,902 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 18 proven. 566 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-07-13 18:23:49,903 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853534163] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:49,903 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:23:49,903 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 16 [2021-07-13 18:23:49,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91880565] [2021-07-13 18:23:49,903 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 18:23:49,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:23:49,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 18:23:49,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-07-13 18:23:49,904 INFO L87 Difference]: Start difference. First operand 33108 states and 87926 transitions. Second operand has 16 states, 16 states have (on average 19.75) internal successors, (316), 16 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:50,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:23:50,335 INFO L93 Difference]: Finished difference Result 46473 states and 122134 transitions. [2021-07-13 18:23:50,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-13 18:23:50,335 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 19.75) internal successors, (316), 16 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 293 [2021-07-13 18:23:50,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:23:50,422 INFO L225 Difference]: With dead ends: 46473 [2021-07-13 18:23:50,422 INFO L226 Difference]: Without dead ends: 46473 [2021-07-13 18:23:50,422 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 248.3ms TimeCoverageRelationStatistics Valid=259, Invalid=611, Unknown=0, NotChecked=0, Total=870 [2021-07-13 18:23:50,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46473 states. [2021-07-13 18:23:50,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46473 to 34368. [2021-07-13 18:23:51,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34368 states, 34366 states have (on average 2.6588779607751847) internal successors, (91375), 34367 states have internal predecessors, (91375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:51,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34368 states to 34368 states and 91375 transitions. [2021-07-13 18:23:51,093 INFO L78 Accepts]: Start accepts. Automaton has 34368 states and 91375 transitions. Word has length 293 [2021-07-13 18:23:51,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:23:51,094 INFO L482 AbstractCegarLoop]: Abstraction has 34368 states and 91375 transitions. [2021-07-13 18:23:51,094 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 19.75) internal successors, (316), 16 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:51,094 INFO L276 IsEmpty]: Start isEmpty. Operand 34368 states and 91375 transitions. [2021-07-13 18:23:51,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-07-13 18:23:51,139 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:23:51,140 INFO L508 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:23:51,340 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-07-13 18:23:51,340 INFO L430 AbstractCegarLoop]: === Iteration 29 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:23:51,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:23:51,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1337820332, now seen corresponding path program 13 times [2021-07-13 18:23:51,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:23:51,341 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921455397] [2021-07-13 18:23:51,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:23:51,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:23:51,601 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 18 proven. 566 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-07-13 18:23:51,601 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:23:51,601 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921455397] [2021-07-13 18:23:51,601 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921455397] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:51,601 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623666661] [2021-07-13 18:23:51,601 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:23:51,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:23:51,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 16 conjunts are in the unsatisfiable core [2021-07-13 18:23:51,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:23:52,145 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 18 proven. 566 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-07-13 18:23:52,145 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623666661] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:52,145 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:23:52,145 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 16 [2021-07-13 18:23:52,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637934102] [2021-07-13 18:23:52,146 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-13 18:23:52,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:23:52,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-13 18:23:52,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-07-13 18:23:52,146 INFO L87 Difference]: Start difference. First operand 34368 states and 91375 transitions. Second operand has 16 states, 16 states have (on average 19.75) internal successors, (316), 16 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:52,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:23:52,574 INFO L93 Difference]: Finished difference Result 46513 states and 122653 transitions. [2021-07-13 18:23:52,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-07-13 18:23:52,575 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 19.75) internal successors, (316), 16 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 293 [2021-07-13 18:23:52,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:23:52,659 INFO L225 Difference]: With dead ends: 46513 [2021-07-13 18:23:52,660 INFO L226 Difference]: Without dead ends: 46513 [2021-07-13 18:23:52,660 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 163.6ms TimeCoverageRelationStatistics Valid=267, Invalid=663, Unknown=0, NotChecked=0, Total=930 [2021-07-13 18:23:52,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46513 states. [2021-07-13 18:23:53,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46513 to 36308. [2021-07-13 18:23:53,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36308 states, 36306 states have (on average 2.6638572136836887) internal successors, (96714), 36307 states have internal predecessors, (96714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:53,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36308 states to 36308 states and 96714 transitions. [2021-07-13 18:23:53,379 INFO L78 Accepts]: Start accepts. Automaton has 36308 states and 96714 transitions. Word has length 293 [2021-07-13 18:23:53,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:23:53,379 INFO L482 AbstractCegarLoop]: Abstraction has 36308 states and 96714 transitions. [2021-07-13 18:23:53,379 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 19.75) internal successors, (316), 16 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:53,379 INFO L276 IsEmpty]: Start isEmpty. Operand 36308 states and 96714 transitions. [2021-07-13 18:23:53,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-07-13 18:23:53,434 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:23:53,435 INFO L508 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:23:53,635 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-07-13 18:23:53,635 INFO L430 AbstractCegarLoop]: === Iteration 30 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:23:53,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:23:53,636 INFO L82 PathProgramCache]: Analyzing trace with hash -395080804, now seen corresponding path program 7 times [2021-07-13 18:23:53,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:23:53,636 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482733513] [2021-07-13 18:23:53,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:23:53,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:23:53,990 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 18 proven. 581 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-07-13 18:23:53,990 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:23:53,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482733513] [2021-07-13 18:23:53,990 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482733513] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:53,991 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842264819] [2021-07-13 18:23:53,991 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:23:54,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:23:54,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 18 conjunts are in the unsatisfiable core [2021-07-13 18:23:54,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:23:54,473 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 18 proven. 558 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-07-13 18:23:54,473 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842264819] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:54,473 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:23:54,473 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 15 [2021-07-13 18:23:54,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654169640] [2021-07-13 18:23:54,474 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-07-13 18:23:54,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:23:54,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-07-13 18:23:54,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-07-13 18:23:54,474 INFO L87 Difference]: Start difference. First operand 36308 states and 96714 transitions. Second operand has 15 states, 15 states have (on average 20.733333333333334) internal successors, (311), 15 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:54,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:23:54,915 INFO L93 Difference]: Finished difference Result 55238 states and 146081 transitions. [2021-07-13 18:23:54,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-13 18:23:54,915 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 20.733333333333334) internal successors, (311), 15 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 322 [2021-07-13 18:23:54,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:23:55,032 INFO L225 Difference]: With dead ends: 55238 [2021-07-13 18:23:55,032 INFO L226 Difference]: Without dead ends: 55238 [2021-07-13 18:23:55,033 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 171.2ms TimeCoverageRelationStatistics Valid=223, Invalid=647, Unknown=0, NotChecked=0, Total=870 [2021-07-13 18:23:55,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55238 states. [2021-07-13 18:23:55,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55238 to 36988. [2021-07-13 18:23:55,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36988 states, 36986 states have (on average 2.665981722814038) internal successors, (98604), 36987 states have internal predecessors, (98604), 0 states have call successors, (0), 0 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 18:23:55,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36988 states to 36988 states and 98604 transitions. [2021-07-13 18:23:55,849 INFO L78 Accepts]: Start accepts. Automaton has 36988 states and 98604 transitions. Word has length 322 [2021-07-13 18:23:55,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:23:55,849 INFO L482 AbstractCegarLoop]: Abstraction has 36988 states and 98604 transitions. [2021-07-13 18:23:55,849 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 20.733333333333334) internal successors, (311), 15 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:55,849 INFO L276 IsEmpty]: Start isEmpty. Operand 36988 states and 98604 transitions. [2021-07-13 18:23:56,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-07-13 18:23:56,073 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:23:56,073 INFO L508 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:23:56,274 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:23:56,274 INFO L430 AbstractCegarLoop]: === Iteration 31 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:23:56,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:23:56,274 INFO L82 PathProgramCache]: Analyzing trace with hash -752046402, now seen corresponding path program 8 times [2021-07-13 18:23:56,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:23:56,274 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990687104] [2021-07-13 18:23:56,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:23:56,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:23:56,389 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 18 proven. 581 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-07-13 18:23:56,390 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:23:56,390 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990687104] [2021-07-13 18:23:56,390 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990687104] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:56,390 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396791069] [2021-07-13 18:23:56,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:23:56,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-13 18:23:56,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:23:56,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 18 conjunts are in the unsatisfiable core [2021-07-13 18:23:56,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:23:56,853 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 18 proven. 558 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-07-13 18:23:56,853 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396791069] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:56,853 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:23:56,853 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 15 [2021-07-13 18:23:56,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879751576] [2021-07-13 18:23:56,854 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-07-13 18:23:56,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:23:56,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-07-13 18:23:56,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-07-13 18:23:56,854 INFO L87 Difference]: Start difference. First operand 36988 states and 98604 transitions. Second operand has 15 states, 15 states have (on average 20.733333333333334) internal successors, (311), 15 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:57,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:23:57,301 INFO L93 Difference]: Finished difference Result 54758 states and 144400 transitions. [2021-07-13 18:23:57,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-07-13 18:23:57,301 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 20.733333333333334) internal successors, (311), 15 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 322 [2021-07-13 18:23:57,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:23:57,414 INFO L225 Difference]: With dead ends: 54758 [2021-07-13 18:23:57,414 INFO L226 Difference]: Without dead ends: 54758 [2021-07-13 18:23:57,414 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 228.3ms TimeCoverageRelationStatistics Valid=215, Invalid=597, Unknown=0, NotChecked=0, Total=812 [2021-07-13 18:23:57,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54758 states. [2021-07-13 18:23:58,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54758 to 38248. [2021-07-13 18:23:58,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38248 states, 38246 states have (on average 2.6683313287664068) internal successors, (102053), 38247 states have internal predecessors, (102053), 0 states have call successors, (0), 0 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 18:23:58,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38248 states to 38248 states and 102053 transitions. [2021-07-13 18:23:58,326 INFO L78 Accepts]: Start accepts. Automaton has 38248 states and 102053 transitions. Word has length 322 [2021-07-13 18:23:58,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:23:58,326 INFO L482 AbstractCegarLoop]: Abstraction has 38248 states and 102053 transitions. [2021-07-13 18:23:58,327 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 20.733333333333334) internal successors, (311), 15 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:58,327 INFO L276 IsEmpty]: Start isEmpty. Operand 38248 states and 102053 transitions. [2021-07-13 18:23:58,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-07-13 18:23:58,540 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:23:58,541 INFO L508 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:23:58,757 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:23:58,757 INFO L430 AbstractCegarLoop]: === Iteration 32 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:23:58,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:23:58,757 INFO L82 PathProgramCache]: Analyzing trace with hash 447121760, now seen corresponding path program 9 times [2021-07-13 18:23:58,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:23:58,757 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222486368] [2021-07-13 18:23:58,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:23:58,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:23:58,867 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 18 proven. 581 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-07-13 18:23:58,868 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:23:58,868 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222486368] [2021-07-13 18:23:58,868 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222486368] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:58,868 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745076086] [2021-07-13 18:23:58,868 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:23:59,112 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-07-13 18:23:59,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:23:59,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 18 conjunts are in the unsatisfiable core [2021-07-13 18:23:59,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:23:59,429 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 18 proven. 558 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-07-13 18:23:59,429 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745076086] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:23:59,429 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:23:59,429 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 15 [2021-07-13 18:23:59,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106438333] [2021-07-13 18:23:59,429 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-07-13 18:23:59,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:23:59,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-07-13 18:23:59,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-07-13 18:23:59,430 INFO L87 Difference]: Start difference. First operand 38248 states and 102053 transitions. Second operand has 15 states, 15 states have (on average 20.733333333333334) internal successors, (311), 15 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:23:59,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:23:59,858 INFO L93 Difference]: Finished difference Result 53093 states and 139653 transitions. [2021-07-13 18:23:59,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-07-13 18:23:59,859 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 20.733333333333334) internal successors, (311), 15 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 322 [2021-07-13 18:23:59,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:23:59,963 INFO L225 Difference]: With dead ends: 53093 [2021-07-13 18:23:59,963 INFO L226 Difference]: Without dead ends: 53093 [2021-07-13 18:23:59,963 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 136.1ms TimeCoverageRelationStatistics Valid=217, Invalid=595, Unknown=0, NotChecked=0, Total=812 [2021-07-13 18:24:00,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53093 states. [2021-07-13 18:24:00,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53093 to 36308. [2021-07-13 18:24:00,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36308 states, 36306 states have (on average 2.6638572136836887) internal successors, (96714), 36307 states have internal predecessors, (96714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:24:00,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36308 states to 36308 states and 96714 transitions. [2021-07-13 18:24:00,869 INFO L78 Accepts]: Start accepts. Automaton has 36308 states and 96714 transitions. Word has length 322 [2021-07-13 18:24:00,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:24:00,869 INFO L482 AbstractCegarLoop]: Abstraction has 36308 states and 96714 transitions. [2021-07-13 18:24:00,870 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 20.733333333333334) internal successors, (311), 15 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:24:00,870 INFO L276 IsEmpty]: Start isEmpty. Operand 36308 states and 96714 transitions. [2021-07-13 18:24:00,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-07-13 18:24:00,924 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:24:00,924 INFO L508 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:24:01,131 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-07-13 18:24:01,131 INFO L430 AbstractCegarLoop]: === Iteration 33 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:24:01,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:24:01,132 INFO L82 PathProgramCache]: Analyzing trace with hash 2118752382, now seen corresponding path program 10 times [2021-07-13 18:24:01,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:24:01,132 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572512450] [2021-07-13 18:24:01,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:24:01,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:24:01,246 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 18 proven. 558 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-07-13 18:24:01,246 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:24:01,246 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572512450] [2021-07-13 18:24:01,246 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572512450] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:24:01,246 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821152341] [2021-07-13 18:24:01,246 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:24:01,509 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-13 18:24:01,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:24:01,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 18 conjunts are in the unsatisfiable core [2021-07-13 18:24:01,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:24:01,881 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 18 proven. 558 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-07-13 18:24:01,882 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821152341] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:24:01,882 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:24:01,882 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-07-13 18:24:01,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071443928] [2021-07-13 18:24:01,882 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-07-13 18:24:01,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:24:01,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-07-13 18:24:01,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-07-13 18:24:01,883 INFO L87 Difference]: Start difference. First operand 36308 states and 96714 transitions. Second operand has 15 states, 15 states have (on average 20.733333333333334) internal successors, (311), 15 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:24:02,046 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2021-07-13 18:24:02,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:24:02,356 INFO L93 Difference]: Finished difference Result 59558 states and 157552 transitions. [2021-07-13 18:24:02,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-07-13 18:24:02,356 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 20.733333333333334) internal successors, (311), 15 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 322 [2021-07-13 18:24:02,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:24:02,480 INFO L225 Difference]: With dead ends: 59558 [2021-07-13 18:24:02,480 INFO L226 Difference]: Without dead ends: 59558 [2021-07-13 18:24:02,481 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 245.9ms TimeCoverageRelationStatistics Valid=211, Invalid=601, Unknown=0, NotChecked=0, Total=812 [2021-07-13 18:24:02,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59558 states. [2021-07-13 18:24:03,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59558 to 38928. [2021-07-13 18:24:03,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38928 states, 38926 states have (on average 2.670271797770128) internal successors, (103943), 38927 states have internal predecessors, (103943), 0 states have call successors, (0), 0 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 18:24:03,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38928 states to 38928 states and 103943 transitions. [2021-07-13 18:24:03,508 INFO L78 Accepts]: Start accepts. Automaton has 38928 states and 103943 transitions. Word has length 322 [2021-07-13 18:24:03,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:24:03,509 INFO L482 AbstractCegarLoop]: Abstraction has 38928 states and 103943 transitions. [2021-07-13 18:24:03,509 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 20.733333333333334) internal successors, (311), 15 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:24:03,509 INFO L276 IsEmpty]: Start isEmpty. Operand 38928 states and 103943 transitions. [2021-07-13 18:24:03,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-07-13 18:24:03,563 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:24:03,564 INFO L508 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:24:03,764 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:24:03,764 INFO L430 AbstractCegarLoop]: === Iteration 34 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:24:03,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:24:03,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1761786784, now seen corresponding path program 11 times [2021-07-13 18:24:03,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:24:03,765 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231139500] [2021-07-13 18:24:03,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:24:03,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:24:03,867 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 18 proven. 558 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-07-13 18:24:03,867 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:24:03,867 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231139500] [2021-07-13 18:24:03,868 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231139500] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:24:03,868 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991050957] [2021-07-13 18:24:03,868 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:24:04,132 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-07-13 18:24:04,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:24:04,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 18 conjunts are in the unsatisfiable core [2021-07-13 18:24:04,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:24:04,437 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 18 proven. 558 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-07-13 18:24:04,437 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991050957] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:24:04,437 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:24:04,437 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-07-13 18:24:04,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119295634] [2021-07-13 18:24:04,438 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-07-13 18:24:04,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:24:04,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-07-13 18:24:04,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-07-13 18:24:04,439 INFO L87 Difference]: Start difference. First operand 38928 states and 103943 transitions. Second operand has 15 states, 15 states have (on average 20.733333333333334) internal successors, (311), 15 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:24:04,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:24:04,915 INFO L93 Difference]: Finished difference Result 57013 states and 150357 transitions. [2021-07-13 18:24:04,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-07-13 18:24:04,916 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 20.733333333333334) internal successors, (311), 15 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 322 [2021-07-13 18:24:04,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:24:05,037 INFO L225 Difference]: With dead ends: 57013 [2021-07-13 18:24:05,038 INFO L226 Difference]: Without dead ends: 57013 [2021-07-13 18:24:05,038 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 228.6ms TimeCoverageRelationStatistics Valid=213, Invalid=599, Unknown=0, NotChecked=0, Total=812 [2021-07-13 18:24:05,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57013 states. [2021-07-13 18:24:05,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57013 to 41348. [2021-07-13 18:24:05,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41348 states, 41346 states have (on average 2.6736806462535676) internal successors, (110546), 41347 states have internal predecessors, (110546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:24:06,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41348 states to 41348 states and 110546 transitions. [2021-07-13 18:24:06,145 INFO L78 Accepts]: Start accepts. Automaton has 41348 states and 110546 transitions. Word has length 322 [2021-07-13 18:24:06,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:24:06,145 INFO L482 AbstractCegarLoop]: Abstraction has 41348 states and 110546 transitions. [2021-07-13 18:24:06,145 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 20.733333333333334) internal successors, (311), 15 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:24:06,145 INFO L276 IsEmpty]: Start isEmpty. Operand 41348 states and 110546 transitions. [2021-07-13 18:24:06,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2021-07-13 18:24:06,207 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:24:06,208 INFO L508 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:24:06,408 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-07-13 18:24:06,408 INFO L430 AbstractCegarLoop]: === Iteration 35 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:24:06,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:24:06,409 INFO L82 PathProgramCache]: Analyzing trace with hash -350311975, now seen corresponding path program 8 times [2021-07-13 18:24:06,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:24:06,409 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951565001] [2021-07-13 18:24:06,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:24:06,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:24:06,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1096 backedges. 24 proven. 1072 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:24:06,567 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:24:06,567 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951565001] [2021-07-13 18:24:06,567 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951565001] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:24:06,567 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925810899] [2021-07-13 18:24:06,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:24:06,697 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-13 18:24:06,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:24:06,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 18 conjunts are in the unsatisfiable core [2021-07-13 18:24:06,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:24:07,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1096 backedges. 24 proven. 1072 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:24:07,121 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925810899] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:24:07,121 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:24:07,121 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2021-07-13 18:24:07,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991876319] [2021-07-13 18:24:07,121 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-07-13 18:24:07,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:24:07,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-07-13 18:24:07,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2021-07-13 18:24:07,122 INFO L87 Difference]: Start difference. First operand 41348 states and 110546 transitions. Second operand has 21 states, 21 states have (on average 17.761904761904763) internal successors, (373), 21 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:24:07,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:24:07,661 INFO L93 Difference]: Finished difference Result 50527 states and 134028 transitions. [2021-07-13 18:24:07,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-07-13 18:24:07,662 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 17.761904761904763) internal successors, (373), 21 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 326 [2021-07-13 18:24:07,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:24:07,763 INFO L225 Difference]: With dead ends: 50527 [2021-07-13 18:24:07,763 INFO L226 Difference]: Without dead ends: 50527 [2021-07-13 18:24:07,763 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 241.1ms TimeCoverageRelationStatistics Valid=496, Invalid=986, Unknown=0, NotChecked=0, Total=1482 [2021-07-13 18:24:07,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50527 states. [2021-07-13 18:24:08,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50527 to 43150. [2021-07-13 18:24:08,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43150 states, 43148 states have (on average 2.668860665616019) internal successors, (115156), 43149 states have internal predecessors, (115156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:24:08,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43150 states to 43150 states and 115156 transitions. [2021-07-13 18:24:08,783 INFO L78 Accepts]: Start accepts. Automaton has 43150 states and 115156 transitions. Word has length 326 [2021-07-13 18:24:08,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:24:08,783 INFO L482 AbstractCegarLoop]: Abstraction has 43150 states and 115156 transitions. [2021-07-13 18:24:08,783 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 17.761904761904763) internal successors, (373), 21 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:24:08,783 INFO L276 IsEmpty]: Start isEmpty. Operand 43150 states and 115156 transitions. [2021-07-13 18:24:08,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2021-07-13 18:24:08,851 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:24:08,852 INFO L508 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:24:09,057 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-07-13 18:24:09,058 INFO L430 AbstractCegarLoop]: === Iteration 36 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:24:09,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:24:09,059 INFO L82 PathProgramCache]: Analyzing trace with hash 670891353, now seen corresponding path program 14 times [2021-07-13 18:24:09,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:24:09,059 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843559545] [2021-07-13 18:24:09,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:24:09,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:24:09,195 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 21 proven. 808 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-07-13 18:24:09,196 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:24:09,196 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843559545] [2021-07-13 18:24:09,196 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843559545] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:24:09,196 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063104810] [2021-07-13 18:24:09,196 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:24:09,326 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-13 18:24:09,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:24:09,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 18 conjunts are in the unsatisfiable core [2021-07-13 18:24:09,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:24:09,738 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 21 proven. 785 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-07-13 18:24:09,738 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063104810] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:24:09,738 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:24:09,738 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 18 [2021-07-13 18:24:09,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505994866] [2021-07-13 18:24:09,738 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 18:24:09,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:24:09,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 18:24:09,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-07-13 18:24:09,739 INFO L87 Difference]: Start difference. First operand 43150 states and 115156 transitions. Second operand has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:24:10,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:24:10,161 INFO L93 Difference]: Finished difference Result 53420 states and 141238 transitions. [2021-07-13 18:24:10,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 18:24:10,161 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 327 [2021-07-13 18:24:10,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:24:10,276 INFO L225 Difference]: With dead ends: 53420 [2021-07-13 18:24:10,277 INFO L226 Difference]: Without dead ends: 53420 [2021-07-13 18:24:10,277 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 197.3ms TimeCoverageRelationStatistics Valid=338, Invalid=784, Unknown=0, NotChecked=0, Total=1122 [2021-07-13 18:24:10,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53420 states. [2021-07-13 18:24:11,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53420 to 43830. [2021-07-13 18:24:11,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43830 states, 43828 states have (on average 2.6705758875604637) internal successors, (117046), 43829 states have internal predecessors, (117046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:24:11,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43830 states to 43830 states and 117046 transitions. [2021-07-13 18:24:11,317 INFO L78 Accepts]: Start accepts. Automaton has 43830 states and 117046 transitions. Word has length 327 [2021-07-13 18:24:11,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:24:11,318 INFO L482 AbstractCegarLoop]: Abstraction has 43830 states and 117046 transitions. [2021-07-13 18:24:11,318 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:24:11,318 INFO L276 IsEmpty]: Start isEmpty. Operand 43830 states and 117046 transitions. [2021-07-13 18:24:11,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2021-07-13 18:24:11,395 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:24:11,395 INFO L508 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:24:11,597 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-07-13 18:24:11,597 INFO L430 AbstractCegarLoop]: === Iteration 37 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:24:11,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:24:11,598 INFO L82 PathProgramCache]: Analyzing trace with hash 852613623, now seen corresponding path program 15 times [2021-07-13 18:24:11,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:24:11,598 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105290043] [2021-07-13 18:24:11,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:24:11,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:24:11,725 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 21 proven. 785 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-07-13 18:24:11,725 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:24:11,725 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105290043] [2021-07-13 18:24:11,725 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105290043] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:24:11,725 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608869165] [2021-07-13 18:24:11,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:24:11,978 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-07-13 18:24:11,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:24:11,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 18 conjunts are in the unsatisfiable core [2021-07-13 18:24:11,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:24:12,325 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 21 proven. 785 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-07-13 18:24:12,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608869165] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:24:12,326 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:24:12,326 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-07-13 18:24:12,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74165987] [2021-07-13 18:24:12,326 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 18:24:12,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:24:12,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 18:24:12,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-07-13 18:24:12,327 INFO L87 Difference]: Start difference. First operand 43830 states and 117046 transitions. Second operand has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:24:12,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:24:12,865 INFO L93 Difference]: Finished difference Result 57625 states and 151795 transitions. [2021-07-13 18:24:12,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 18:24:12,865 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 327 [2021-07-13 18:24:12,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:24:12,981 INFO L225 Difference]: With dead ends: 57625 [2021-07-13 18:24:12,981 INFO L226 Difference]: Without dead ends: 57625 [2021-07-13 18:24:12,982 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 186.4ms TimeCoverageRelationStatistics Valid=336, Invalid=786, Unknown=0, NotChecked=0, Total=1122 [2021-07-13 18:24:13,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57625 states. [2021-07-13 18:24:13,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57625 to 43150. [2021-07-13 18:24:13,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43150 states, 43148 states have (on average 2.668860665616019) internal successors, (115156), 43149 states have internal predecessors, (115156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:24:13,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43150 states to 43150 states and 115156 transitions. [2021-07-13 18:24:13,898 INFO L78 Accepts]: Start accepts. Automaton has 43150 states and 115156 transitions. Word has length 327 [2021-07-13 18:24:13,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:24:13,899 INFO L482 AbstractCegarLoop]: Abstraction has 43150 states and 115156 transitions. [2021-07-13 18:24:13,899 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:24:13,899 INFO L276 IsEmpty]: Start isEmpty. Operand 43150 states and 115156 transitions. [2021-07-13 18:24:14,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2021-07-13 18:24:14,147 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:24:14,147 INFO L508 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:24:14,360 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-07-13 18:24:14,361 INFO L430 AbstractCegarLoop]: === Iteration 38 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:24:14,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:24:14,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1461272085, now seen corresponding path program 16 times [2021-07-13 18:24:14,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:24:14,361 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492612474] [2021-07-13 18:24:14,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:24:14,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:24:14,479 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 21 proven. 785 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-07-13 18:24:14,479 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:24:14,479 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492612474] [2021-07-13 18:24:14,479 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492612474] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:24:14,479 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129227539] [2021-07-13 18:24:14,479 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:24:14,759 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-13 18:24:14,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:24:14,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 18 conjunts are in the unsatisfiable core [2021-07-13 18:24:14,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:24:15,089 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 21 proven. 785 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-07-13 18:24:15,090 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129227539] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:24:15,090 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:24:15,090 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-07-13 18:24:15,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810998662] [2021-07-13 18:24:15,090 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 18:24:15,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:24:15,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 18:24:15,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-07-13 18:24:15,091 INFO L87 Difference]: Start difference. First operand 43150 states and 115156 transitions. Second operand has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:24:15,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:24:15,623 INFO L93 Difference]: Finished difference Result 58745 states and 155304 transitions. [2021-07-13 18:24:15,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-13 18:24:15,623 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 327 [2021-07-13 18:24:15,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:24:15,747 INFO L225 Difference]: With dead ends: 58745 [2021-07-13 18:24:15,747 INFO L226 Difference]: Without dead ends: 58745 [2021-07-13 18:24:15,748 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 190.3ms TimeCoverageRelationStatistics Valid=345, Invalid=845, Unknown=0, NotChecked=0, Total=1190 [2021-07-13 18:24:15,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58745 states. [2021-07-13 18:24:16,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58745 to 45090. [2021-07-13 18:24:16,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45090 states, 45088 states have (on average 2.672440560681334) internal successors, (120495), 45089 states have internal predecessors, (120495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:24:16,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45090 states to 45090 states and 120495 transitions. [2021-07-13 18:24:16,781 INFO L78 Accepts]: Start accepts. Automaton has 45090 states and 120495 transitions. Word has length 327 [2021-07-13 18:24:16,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:24:16,781 INFO L482 AbstractCegarLoop]: Abstraction has 45090 states and 120495 transitions. [2021-07-13 18:24:16,781 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:24:16,781 INFO L276 IsEmpty]: Start isEmpty. Operand 45090 states and 120495 transitions. [2021-07-13 18:24:16,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2021-07-13 18:24:16,851 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:24:16,852 INFO L508 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:24:17,052 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-07-13 18:24:17,053 INFO L430 AbstractCegarLoop]: === Iteration 39 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:24:17,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:24:17,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1370682957, now seen corresponding path program 17 times [2021-07-13 18:24:17,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:24:17,053 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626440772] [2021-07-13 18:24:17,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:24:17,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:24:17,187 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 21 proven. 785 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-07-13 18:24:17,188 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:24:17,188 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626440772] [2021-07-13 18:24:17,188 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626440772] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:24:17,188 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783594119] [2021-07-13 18:24:17,188 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:24:17,363 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-07-13 18:24:17,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:24:17,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 18 conjunts are in the unsatisfiable core [2021-07-13 18:24:17,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:24:17,694 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 21 proven. 785 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-07-13 18:24:17,694 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783594119] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:24:17,694 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:24:17,694 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-07-13 18:24:17,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031666337] [2021-07-13 18:24:17,695 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 18:24:17,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:24:17,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 18:24:17,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-07-13 18:24:17,696 INFO L87 Difference]: Start difference. First operand 45090 states and 120495 transitions. Second operand has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:24:18,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:24:18,277 INFO L93 Difference]: Finished difference Result 64210 states and 169402 transitions. [2021-07-13 18:24:18,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-07-13 18:24:18,277 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 327 [2021-07-13 18:24:18,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:24:18,406 INFO L225 Difference]: With dead ends: 64210 [2021-07-13 18:24:18,406 INFO L226 Difference]: Without dead ends: 64210 [2021-07-13 18:24:18,407 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 199.2ms TimeCoverageRelationStatistics Valid=354, Invalid=906, Unknown=0, NotChecked=0, Total=1260 [2021-07-13 18:24:18,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64210 states. [2021-07-13 18:24:19,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64210 to 48290. [2021-07-13 18:24:19,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48290 states, 48288 states have (on average 2.6773318422796555) internal successors, (129283), 48289 states have internal predecessors, (129283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:24:19,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48290 states to 48290 states and 129283 transitions. [2021-07-13 18:24:19,569 INFO L78 Accepts]: Start accepts. Automaton has 48290 states and 129283 transitions. Word has length 327 [2021-07-13 18:24:19,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:24:19,570 INFO L482 AbstractCegarLoop]: Abstraction has 48290 states and 129283 transitions. [2021-07-13 18:24:19,570 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:24:19,570 INFO L276 IsEmpty]: Start isEmpty. Operand 48290 states and 129283 transitions. [2021-07-13 18:24:19,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2021-07-13 18:24:19,639 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:24:19,639 INFO L508 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:24:19,839 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-07-13 18:24:19,840 INFO L430 AbstractCegarLoop]: === Iteration 40 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:24:19,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:24:19,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1717509329, now seen corresponding path program 18 times [2021-07-13 18:24:19,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:24:19,840 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866643152] [2021-07-13 18:24:19,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:24:19,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:24:19,960 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 21 proven. 785 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-07-13 18:24:19,960 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:24:19,960 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866643152] [2021-07-13 18:24:19,960 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866643152] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:24:19,960 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254690304] [2021-07-13 18:24:19,960 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:24:20,242 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-07-13 18:24:20,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:24:20,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 18 conjunts are in the unsatisfiable core [2021-07-13 18:24:20,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:24:20,721 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 21 proven. 785 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-07-13 18:24:20,722 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254690304] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:24:20,722 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:24:20,722 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-07-13 18:24:20,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267290998] [2021-07-13 18:24:20,722 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 18:24:20,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:24:20,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 18:24:20,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-07-13 18:24:20,723 INFO L87 Difference]: Start difference. First operand 48290 states and 129283 transitions. Second operand has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:24:21,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:24:21,200 INFO L93 Difference]: Finished difference Result 71055 states and 187712 transitions. [2021-07-13 18:24:21,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-07-13 18:24:21,201 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 327 [2021-07-13 18:24:21,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:24:21,493 INFO L225 Difference]: With dead ends: 71055 [2021-07-13 18:24:21,493 INFO L226 Difference]: Without dead ends: 71055 [2021-07-13 18:24:21,494 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 201.6ms TimeCoverageRelationStatistics Valid=363, Invalid=969, Unknown=0, NotChecked=0, Total=1332 [2021-07-13 18:24:21,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71055 states. [2021-07-13 18:24:22,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71055 to 49550. [2021-07-13 18:24:22,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49550 states, 49548 states have (on average 2.678856866069266) internal successors, (132732), 49549 states have internal predecessors, (132732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:24:22,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49550 states to 49550 states and 132732 transitions. [2021-07-13 18:24:22,600 INFO L78 Accepts]: Start accepts. Automaton has 49550 states and 132732 transitions. Word has length 327 [2021-07-13 18:24:22,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:24:22,600 INFO L482 AbstractCegarLoop]: Abstraction has 49550 states and 132732 transitions. [2021-07-13 18:24:22,601 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:24:22,601 INFO L276 IsEmpty]: Start isEmpty. Operand 49550 states and 132732 transitions. [2021-07-13 18:24:22,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2021-07-13 18:24:22,676 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:24:22,676 INFO L508 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:24:22,876 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-07-13 18:24:22,876 INFO L430 AbstractCegarLoop]: === Iteration 41 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:24:22,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:24:22,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1605982063, now seen corresponding path program 19 times [2021-07-13 18:24:22,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:24:22,877 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851867768] [2021-07-13 18:24:22,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:24:23,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:24:23,182 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 21 proven. 785 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-07-13 18:24:23,183 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:24:23,183 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851867768] [2021-07-13 18:24:23,183 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851867768] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:24:23,183 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732894714] [2021-07-13 18:24:23,183 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:24:23,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:24:23,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 18 conjunts are in the unsatisfiable core [2021-07-13 18:24:23,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:24:23,632 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 21 proven. 785 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-07-13 18:24:23,632 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732894714] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:24:23,632 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:24:23,632 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-07-13 18:24:23,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782467168] [2021-07-13 18:24:23,632 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-13 18:24:23,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:24:23,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-13 18:24:23,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-07-13 18:24:23,633 INFO L87 Difference]: Start difference. First operand 49550 states and 132732 transitions. Second operand has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:24:24,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:24:24,261 INFO L93 Difference]: Finished difference Result 66465 states and 176301 transitions. [2021-07-13 18:24:24,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-07-13 18:24:24,262 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 327 [2021-07-13 18:24:24,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:24:24,400 INFO L225 Difference]: With dead ends: 66465 [2021-07-13 18:24:24,401 INFO L226 Difference]: Without dead ends: 66465 [2021-07-13 18:24:24,401 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 220.6ms TimeCoverageRelationStatistics Valid=372, Invalid=1034, Unknown=0, NotChecked=0, Total=1406 [2021-07-13 18:24:24,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66465 states. [2021-07-13 18:24:25,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66465 to 48190. [2021-07-13 18:24:25,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48190 states, 48188 states have (on average 2.6760189258736613) internal successors, (128952), 48189 states have internal predecessors, (128952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:24:25,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48190 states to 48190 states and 128952 transitions. [2021-07-13 18:24:25,588 INFO L78 Accepts]: Start accepts. Automaton has 48190 states and 128952 transitions. Word has length 327 [2021-07-13 18:24:25,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:24:25,589 INFO L482 AbstractCegarLoop]: Abstraction has 48190 states and 128952 transitions. [2021-07-13 18:24:25,589 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:24:25,589 INFO L276 IsEmpty]: Start isEmpty. Operand 48190 states and 128952 transitions. [2021-07-13 18:24:25,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2021-07-13 18:24:25,666 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:24:25,666 INFO L508 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:24:25,867 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:24:25,867 INFO L430 AbstractCegarLoop]: === Iteration 42 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:24:25,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:24:25,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1871299756, now seen corresponding path program 12 times [2021-07-13 18:24:25,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:24:25,867 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764217377] [2021-07-13 18:24:25,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:24:25,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:24:25,967 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 18 proven. 602 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-07-13 18:24:25,968 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:24:25,968 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764217377] [2021-07-13 18:24:25,968 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764217377] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:24:25,968 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568857687] [2021-07-13 18:24:25,968 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:24:26,195 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-07-13 18:24:26,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:24:26,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 681 conjuncts, 20 conjunts are in the unsatisfiable core [2021-07-13 18:24:26,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:24:26,540 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 18 proven. 579 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-07-13 18:24:26,540 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568857687] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:24:26,540 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:24:26,541 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 14 [2021-07-13 18:24:26,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262184776] [2021-07-13 18:24:26,541 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-07-13 18:24:26,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:24:26,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-07-13 18:24:26,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-07-13 18:24:26,541 INFO L87 Difference]: Start difference. First operand 48190 states and 128952 transitions. Second operand has 14 states, 14 states have (on average 21.857142857142858) internal successors, (306), 14 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:24:27,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:24:27,103 INFO L93 Difference]: Finished difference Result 84430 states and 223303 transitions. [2021-07-13 18:24:27,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-07-13 18:24:27,104 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 21.857142857142858) internal successors, (306), 14 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 351 [2021-07-13 18:24:27,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:24:27,300 INFO L225 Difference]: With dead ends: 84430 [2021-07-13 18:24:27,301 INFO L226 Difference]: Without dead ends: 84430 [2021-07-13 18:24:27,301 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 234.2ms TimeCoverageRelationStatistics Valid=184, Invalid=572, Unknown=0, NotChecked=0, Total=756 [2021-07-13 18:24:27,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84430 states. [2021-07-13 18:24:28,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84430 to 57010. [2021-07-13 18:24:28,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57010 states, 57008 states have (on average 2.6867632612966603) internal successors, (153167), 57009 states have internal predecessors, (153167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:24:29,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57010 states to 57010 states and 153167 transitions. [2021-07-13 18:24:29,018 INFO L78 Accepts]: Start accepts. Automaton has 57010 states and 153167 transitions. Word has length 351 [2021-07-13 18:24:29,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:24:29,019 INFO L482 AbstractCegarLoop]: Abstraction has 57010 states and 153167 transitions. [2021-07-13 18:24:29,019 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 21.857142857142858) internal successors, (306), 14 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:24:29,019 INFO L276 IsEmpty]: Start isEmpty. Operand 57010 states and 153167 transitions. [2021-07-13 18:24:29,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2021-07-13 18:24:29,122 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:24:29,122 INFO L508 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:24:29,322 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:24:29,323 INFO L430 AbstractCegarLoop]: === Iteration 43 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:24:29,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:24:29,323 INFO L82 PathProgramCache]: Analyzing trace with hash -784131781, now seen corresponding path program 13 times [2021-07-13 18:24:29,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:24:29,323 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509054249] [2021-07-13 18:24:29,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:24:29,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:24:29,459 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 800 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-07-13 18:24:29,459 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:24:29,459 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509054249] [2021-07-13 18:24:29,459 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509054249] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:24:29,459 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571413322] [2021-07-13 18:24:29,459 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:24:29,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:24:29,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 20 conjunts are in the unsatisfiable core [2021-07-13 18:24:29,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:24:29,933 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 777 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-07-13 18:24:29,933 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571413322] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:24:29,933 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:24:29,933 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 17 [2021-07-13 18:24:29,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946836960] [2021-07-13 18:24:29,934 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 18:24:29,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:24:29,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 18:24:29,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-07-13 18:24:29,934 INFO L87 Difference]: Start difference. First operand 57010 states and 153167 transitions. Second operand has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:24:30,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:24:30,577 INFO L93 Difference]: Finished difference Result 84875 states and 226287 transitions. [2021-07-13 18:24:30,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-13 18:24:30,578 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 356 [2021-07-13 18:24:30,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:24:30,752 INFO L225 Difference]: With dead ends: 84875 [2021-07-13 18:24:30,752 INFO L226 Difference]: Without dead ends: 84875 [2021-07-13 18:24:30,752 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 195.9ms TimeCoverageRelationStatistics Valid=302, Invalid=888, Unknown=0, NotChecked=0, Total=1190 [2021-07-13 18:24:30,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84875 states. [2021-07-13 18:24:32,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84875 to 58370. [2021-07-13 18:24:32,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58370 states, 58368 states have (on average 2.6889220120614037) internal successors, (156947), 58369 states have internal predecessors, (156947), 0 states have call successors, (0), 0 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 18:24:32,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58370 states to 58370 states and 156947 transitions. [2021-07-13 18:24:32,471 INFO L78 Accepts]: Start accepts. Automaton has 58370 states and 156947 transitions. Word has length 356 [2021-07-13 18:24:32,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:24:32,471 INFO L482 AbstractCegarLoop]: Abstraction has 58370 states and 156947 transitions. [2021-07-13 18:24:32,471 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:24:32,471 INFO L276 IsEmpty]: Start isEmpty. Operand 58370 states and 156947 transitions. [2021-07-13 18:24:32,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2021-07-13 18:24:32,574 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:24:32,574 INFO L508 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:24:32,774 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:24:32,774 INFO L430 AbstractCegarLoop]: === Iteration 44 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:24:32,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:24:32,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1141097379, now seen corresponding path program 14 times [2021-07-13 18:24:32,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:24:32,775 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711833891] [2021-07-13 18:24:32,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:24:32,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:24:32,916 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 800 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-07-13 18:24:32,917 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:24:32,917 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711833891] [2021-07-13 18:24:32,917 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711833891] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:24:32,917 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252102961] [2021-07-13 18:24:32,917 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:24:33,057 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-13 18:24:33,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:24:33,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 20 conjunts are in the unsatisfiable core [2021-07-13 18:24:33,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:24:33,402 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 777 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-07-13 18:24:33,402 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252102961] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:24:33,402 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:24:33,403 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 17 [2021-07-13 18:24:33,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483951283] [2021-07-13 18:24:33,403 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 18:24:33,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:24:33,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 18:24:33,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-07-13 18:24:33,404 INFO L87 Difference]: Start difference. First operand 58370 states and 156947 transitions. Second operand has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:24:34,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:24:34,122 INFO L93 Difference]: Finished difference Result 84600 states and 225611 transitions. [2021-07-13 18:24:34,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 18:24:34,123 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 356 [2021-07-13 18:24:34,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:24:34,307 INFO L225 Difference]: With dead ends: 84600 [2021-07-13 18:24:34,308 INFO L226 Difference]: Without dead ends: 84600 [2021-07-13 18:24:34,308 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 187.4ms TimeCoverageRelationStatistics Valid=293, Invalid=829, Unknown=0, NotChecked=0, Total=1122 [2021-07-13 18:24:34,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84600 states. [2021-07-13 18:24:35,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84600 to 58370. [2021-07-13 18:24:35,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58370 states, 58368 states have (on average 2.6889220120614037) internal successors, (156947), 58369 states have internal predecessors, (156947), 0 states have call successors, (0), 0 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 18:24:35,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58370 states to 58370 states and 156947 transitions. [2021-07-13 18:24:35,748 INFO L78 Accepts]: Start accepts. Automaton has 58370 states and 156947 transitions. Word has length 356 [2021-07-13 18:24:35,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:24:35,749 INFO L482 AbstractCegarLoop]: Abstraction has 58370 states and 156947 transitions. [2021-07-13 18:24:35,749 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:24:35,749 INFO L276 IsEmpty]: Start isEmpty. Operand 58370 states and 156947 transitions. [2021-07-13 18:24:35,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2021-07-13 18:24:35,848 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:24:35,849 INFO L508 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:24:36,049 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-07-13 18:24:36,053 INFO L430 AbstractCegarLoop]: === Iteration 45 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:24:36,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:24:36,053 INFO L82 PathProgramCache]: Analyzing trace with hash 58070783, now seen corresponding path program 15 times [2021-07-13 18:24:36,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:24:36,053 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469623870] [2021-07-13 18:24:36,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:24:36,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:24:36,484 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 800 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-07-13 18:24:36,484 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:24:36,484 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469623870] [2021-07-13 18:24:36,485 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469623870] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:24:36,485 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919110516] [2021-07-13 18:24:36,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:24:36,867 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-07-13 18:24:36,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:24:36,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 20 conjunts are in the unsatisfiable core [2021-07-13 18:24:36,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:24:37,216 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 777 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-07-13 18:24:37,216 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919110516] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:24:37,216 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:24:37,217 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 17 [2021-07-13 18:24:37,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57683571] [2021-07-13 18:24:37,217 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 18:24:37,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:24:37,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 18:24:37,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-07-13 18:24:37,218 INFO L87 Difference]: Start difference. First operand 58370 states and 156947 transitions. Second operand has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:24:37,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:24:37,912 INFO L93 Difference]: Finished difference Result 86910 states and 231422 transitions. [2021-07-13 18:24:37,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-13 18:24:37,913 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 356 [2021-07-13 18:24:37,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:24:38,121 INFO L225 Difference]: With dead ends: 86910 [2021-07-13 18:24:38,121 INFO L226 Difference]: Without dead ends: 86910 [2021-07-13 18:24:38,122 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 198.9ms TimeCoverageRelationStatistics Valid=284, Invalid=772, Unknown=0, NotChecked=0, Total=1056 [2021-07-13 18:24:38,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86910 states. [2021-07-13 18:24:39,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86910 to 59630. [2021-07-13 18:24:39,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59630 states, 59628 states have (on average 2.6899443214597167) internal successors, (160396), 59629 states have internal predecessors, (160396), 0 states have call successors, (0), 0 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 18:24:39,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59630 states to 59630 states and 160396 transitions. [2021-07-13 18:24:39,590 INFO L78 Accepts]: Start accepts. Automaton has 59630 states and 160396 transitions. Word has length 356 [2021-07-13 18:24:39,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:24:39,591 INFO L482 AbstractCegarLoop]: Abstraction has 59630 states and 160396 transitions. [2021-07-13 18:24:39,591 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:24:39,591 INFO L276 IsEmpty]: Start isEmpty. Operand 59630 states and 160396 transitions. [2021-07-13 18:24:39,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2021-07-13 18:24:39,688 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:24:39,689 INFO L508 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:24:39,889 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:24:39,889 INFO L430 AbstractCegarLoop]: === Iteration 46 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:24:39,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:24:39,890 INFO L82 PathProgramCache]: Analyzing trace with hash -719140575, now seen corresponding path program 16 times [2021-07-13 18:24:39,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:24:39,890 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884271573] [2021-07-13 18:24:39,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:24:39,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:24:40,016 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 800 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-07-13 18:24:40,016 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:24:40,016 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884271573] [2021-07-13 18:24:40,016 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884271573] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:24:40,016 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045873611] [2021-07-13 18:24:40,016 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:24:40,910 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-13 18:24:40,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:24:40,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 20 conjunts are in the unsatisfiable core [2021-07-13 18:24:40,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:24:41,263 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 777 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-07-13 18:24:41,263 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045873611] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:24:41,263 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:24:41,263 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 17 [2021-07-13 18:24:41,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440649327] [2021-07-13 18:24:41,264 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 18:24:41,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:24:41,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 18:24:41,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-07-13 18:24:41,264 INFO L87 Difference]: Start difference. First operand 59630 states and 160396 transitions. Second operand has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:24:42,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:24:42,061 INFO L93 Difference]: Finished difference Result 78235 states and 207498 transitions. [2021-07-13 18:24:42,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-13 18:24:42,062 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 356 [2021-07-13 18:24:42,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:24:42,223 INFO L225 Difference]: With dead ends: 78235 [2021-07-13 18:24:42,223 INFO L226 Difference]: Without dead ends: 78235 [2021-07-13 18:24:42,224 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 173.5ms TimeCoverageRelationStatistics Valid=286, Invalid=770, Unknown=0, NotChecked=0, Total=1056 [2021-07-13 18:24:42,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78235 states. [2021-07-13 18:24:43,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78235 to 57690. [2021-07-13 18:24:43,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57690 states, 57688 states have (on average 2.68785535986687) internal successors, (155057), 57689 states have internal predecessors, (155057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:24:43,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57690 states to 57690 states and 155057 transitions. [2021-07-13 18:24:43,938 INFO L78 Accepts]: Start accepts. Automaton has 57690 states and 155057 transitions. Word has length 356 [2021-07-13 18:24:43,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:24:43,938 INFO L482 AbstractCegarLoop]: Abstraction has 57690 states and 155057 transitions. [2021-07-13 18:24:43,938 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:24:43,938 INFO L276 IsEmpty]: Start isEmpty. Operand 57690 states and 155057 transitions. [2021-07-13 18:24:44,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2021-07-13 18:24:44,046 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:24:44,053 INFO L508 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:24:44,265 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:24:44,265 INFO L430 AbstractCegarLoop]: === Iteration 47 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:24:44,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:24:44,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1710189981, now seen corresponding path program 17 times [2021-07-13 18:24:44,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:24:44,265 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624087232] [2021-07-13 18:24:44,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:24:44,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:24:44,448 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 777 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-07-13 18:24:44,448 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:24:44,448 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624087232] [2021-07-13 18:24:44,448 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624087232] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:24:44,448 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725669436] [2021-07-13 18:24:44,449 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:24:44,731 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-07-13 18:24:44,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:24:44,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 20 conjunts are in the unsatisfiable core [2021-07-13 18:24:44,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:24:45,434 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 777 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-07-13 18:24:45,434 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725669436] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:24:45,434 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:24:45,434 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-07-13 18:24:45,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608579133] [2021-07-13 18:24:45,439 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 18:24:45,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:24:45,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 18:24:45,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-07-13 18:24:45,440 INFO L87 Difference]: Start difference. First operand 57690 states and 155057 transitions. Second operand has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:24:46,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:24:46,091 INFO L93 Difference]: Finished difference Result 94765 states and 252835 transitions. [2021-07-13 18:24:46,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 18:24:46,092 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 356 [2021-07-13 18:24:46,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:24:46,653 INFO L225 Difference]: With dead ends: 94765 [2021-07-13 18:24:46,654 INFO L226 Difference]: Without dead ends: 94765 [2021-07-13 18:24:46,654 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 214.9ms TimeCoverageRelationStatistics Valid=288, Invalid=834, Unknown=0, NotChecked=0, Total=1122 [2021-07-13 18:24:46,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94765 states. [2021-07-13 18:24:48,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94765 to 60990. [2021-07-13 18:24:48,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60990 states, 60988 states have (on average 2.691939397914344) internal successors, (164176), 60989 states have internal predecessors, (164176), 0 states have call successors, (0), 0 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 18:24:48,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60990 states to 60990 states and 164176 transitions. [2021-07-13 18:24:48,393 INFO L78 Accepts]: Start accepts. Automaton has 60990 states and 164176 transitions. Word has length 356 [2021-07-13 18:24:48,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:24:48,393 INFO L482 AbstractCegarLoop]: Abstraction has 60990 states and 164176 transitions. [2021-07-13 18:24:48,394 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:24:48,394 INFO L276 IsEmpty]: Start isEmpty. Operand 60990 states and 164176 transitions. [2021-07-13 18:24:48,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2021-07-13 18:24:48,499 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:24:48,499 INFO L508 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:24:48,706 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-07-13 18:24:48,706 INFO L430 AbstractCegarLoop]: === Iteration 48 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:24:48,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:24:48,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1353224383, now seen corresponding path program 18 times [2021-07-13 18:24:48,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:24:48,707 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291630463] [2021-07-13 18:24:48,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:24:48,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:24:48,821 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 777 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-07-13 18:24:48,822 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:24:48,822 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291630463] [2021-07-13 18:24:48,822 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291630463] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:24:48,822 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265097834] [2021-07-13 18:24:48,822 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:24:49,108 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-07-13 18:24:49,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:24:49,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 20 conjunts are in the unsatisfiable core [2021-07-13 18:24:49,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:24:49,714 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 777 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-07-13 18:24:49,714 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265097834] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:24:49,715 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:24:49,715 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-07-13 18:24:49,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143605603] [2021-07-13 18:24:49,715 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 18:24:49,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:24:49,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 18:24:49,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-07-13 18:24:49,716 INFO L87 Difference]: Start difference. First operand 60990 states and 164176 transitions. Second operand has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:24:50,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:24:50,243 INFO L93 Difference]: Finished difference Result 94500 states and 252439 transitions. [2021-07-13 18:24:50,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-13 18:24:50,243 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 356 [2021-07-13 18:24:50,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:24:50,635 INFO L225 Difference]: With dead ends: 94500 [2021-07-13 18:24:50,635 INFO L226 Difference]: Without dead ends: 94500 [2021-07-13 18:24:50,635 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 171.2ms TimeCoverageRelationStatistics Valid=280, Invalid=776, Unknown=0, NotChecked=0, Total=1056 [2021-07-13 18:24:50,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94500 states. [2021-07-13 18:24:51,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94500 to 61570. [2021-07-13 18:24:52,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61570 states, 61568 states have (on average 2.691901637214137) internal successors, (165735), 61569 states have internal predecessors, (165735), 0 states have call successors, (0), 0 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 18:24:52,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61570 states to 61570 states and 165735 transitions. [2021-07-13 18:24:52,217 INFO L78 Accepts]: Start accepts. Automaton has 61570 states and 165735 transitions. Word has length 356 [2021-07-13 18:24:52,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:24:52,217 INFO L482 AbstractCegarLoop]: Abstraction has 61570 states and 165735 transitions. [2021-07-13 18:24:52,217 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:24:52,217 INFO L276 IsEmpty]: Start isEmpty. Operand 61570 states and 165735 transitions. [2021-07-13 18:24:52,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2021-07-13 18:24:52,316 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:24:52,316 INFO L508 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:24:52,516 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-07-13 18:24:52,516 INFO L430 AbstractCegarLoop]: === Iteration 49 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:24:52,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:24:52,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1742574751, now seen corresponding path program 19 times [2021-07-13 18:24:52,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:24:52,517 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873675340] [2021-07-13 18:24:52,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:24:52,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:24:52,627 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 777 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-07-13 18:24:52,628 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:24:52,628 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873675340] [2021-07-13 18:24:52,628 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873675340] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:24:52,628 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879898975] [2021-07-13 18:24:52,628 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:24:52,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:24:52,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 20 conjunts are in the unsatisfiable core [2021-07-13 18:24:52,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:24:53,346 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 777 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-07-13 18:24:53,347 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879898975] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:24:53,347 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:24:53,347 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-07-13 18:24:53,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215630023] [2021-07-13 18:24:53,347 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 18:24:53,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:24:53,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 18:24:53,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-07-13 18:24:53,348 INFO L87 Difference]: Start difference. First operand 61570 states and 165735 transitions. Second operand has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:24:53,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:24:53,854 INFO L93 Difference]: Finished difference Result 85000 states and 225917 transitions. [2021-07-13 18:24:53,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-13 18:24:53,855 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 356 [2021-07-13 18:24:53,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:24:54,221 INFO L225 Difference]: With dead ends: 85000 [2021-07-13 18:24:54,221 INFO L226 Difference]: Without dead ends: 85000 [2021-07-13 18:24:54,221 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 173.1ms TimeCoverageRelationStatistics Valid=282, Invalid=774, Unknown=0, NotChecked=0, Total=1056 [2021-07-13 18:24:54,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85000 states. [2021-07-13 18:24:55,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85000 to 60110. [2021-07-13 18:24:55,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60110 states, 60108 states have (on average 2.6894922472882143) internal successors, (161660), 60109 states have internal predecessors, (161660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:24:55,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60110 states to 60110 states and 161660 transitions. [2021-07-13 18:24:55,623 INFO L78 Accepts]: Start accepts. Automaton has 60110 states and 161660 transitions. Word has length 356 [2021-07-13 18:24:55,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:24:55,624 INFO L482 AbstractCegarLoop]: Abstraction has 60110 states and 161660 transitions. [2021-07-13 18:24:55,624 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:24:55,624 INFO L276 IsEmpty]: Start isEmpty. Operand 60110 states and 161660 transitions. [2021-07-13 18:24:55,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2021-07-13 18:24:55,715 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:24:55,715 INFO L508 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:24:55,920 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-07-13 18:24:55,920 INFO L430 AbstractCegarLoop]: === Iteration 50 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:24:55,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:24:55,920 INFO L82 PathProgramCache]: Analyzing trace with hash -70944129, now seen corresponding path program 20 times [2021-07-13 18:24:55,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:24:55,920 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301925433] [2021-07-13 18:24:55,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:24:55,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:24:56,033 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 777 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-07-13 18:24:56,033 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:24:56,033 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301925433] [2021-07-13 18:24:56,033 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301925433] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:24:56,033 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347943758] [2021-07-13 18:24:56,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:24:56,159 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-13 18:24:56,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:24:56,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 20 conjunts are in the unsatisfiable core [2021-07-13 18:24:56,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:24:56,513 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 777 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-07-13 18:24:56,514 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347943758] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:24:56,514 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:24:56,514 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-07-13 18:24:56,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093712024] [2021-07-13 18:24:56,514 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 18:24:56,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:24:56,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 18:24:56,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-07-13 18:24:56,515 INFO L87 Difference]: Start difference. First operand 60110 states and 161660 transitions. Second operand has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:24:57,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:24:57,292 INFO L93 Difference]: Finished difference Result 102765 states and 275164 transitions. [2021-07-13 18:24:57,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 18:24:57,292 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 356 [2021-07-13 18:24:57,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:24:57,540 INFO L225 Difference]: With dead ends: 102765 [2021-07-13 18:24:57,541 INFO L226 Difference]: Without dead ends: 102765 [2021-07-13 18:24:57,541 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 181.8ms TimeCoverageRelationStatistics Valid=289, Invalid=833, Unknown=0, NotChecked=0, Total=1122 [2021-07-13 18:24:57,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102765 states. [2021-07-13 18:24:59,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102765 to 62050. [2021-07-13 18:24:59,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62050 states, 62048 states have (on average 2.6914485559566788) internal successors, (166999), 62049 states have internal predecessors, (166999), 0 states have call successors, (0), 0 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 18:24:59,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62050 states to 62050 states and 166999 transitions. [2021-07-13 18:24:59,346 INFO L78 Accepts]: Start accepts. Automaton has 62050 states and 166999 transitions. Word has length 356 [2021-07-13 18:24:59,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:24:59,346 INFO L482 AbstractCegarLoop]: Abstraction has 62050 states and 166999 transitions. [2021-07-13 18:24:59,346 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:24:59,346 INFO L276 IsEmpty]: Start isEmpty. Operand 62050 states and 166999 transitions. [2021-07-13 18:24:59,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2021-07-13 18:24:59,436 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:24:59,437 INFO L508 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:24:59,637 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:24:59,637 INFO L430 AbstractCegarLoop]: === Iteration 51 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:24:59,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:24:59,638 INFO L82 PathProgramCache]: Analyzing trace with hash -427909727, now seen corresponding path program 21 times [2021-07-13 18:24:59,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:24:59,638 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426532938] [2021-07-13 18:24:59,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:24:59,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:24:59,755 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 777 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-07-13 18:24:59,755 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:24:59,755 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426532938] [2021-07-13 18:24:59,756 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426532938] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:24:59,756 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431154419] [2021-07-13 18:24:59,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:25:00,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-07-13 18:25:00,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:25:00,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 20 conjunts are in the unsatisfiable core [2021-07-13 18:25:00,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:25:00,584 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 777 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-07-13 18:25:00,585 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431154419] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:25:00,585 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:25:00,585 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-07-13 18:25:00,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523318906] [2021-07-13 18:25:00,585 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-13 18:25:00,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:25:00,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-13 18:25:00,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-07-13 18:25:00,586 INFO L87 Difference]: Start difference. First operand 62050 states and 166999 transitions. Second operand has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:25:01,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:25:01,103 INFO L93 Difference]: Finished difference Result 84020 states and 223960 transitions. [2021-07-13 18:25:01,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 18:25:01,103 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 356 [2021-07-13 18:25:01,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:25:01,474 INFO L225 Difference]: With dead ends: 84020 [2021-07-13 18:25:01,474 INFO L226 Difference]: Without dead ends: 84020 [2021-07-13 18:25:01,474 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 180.8ms TimeCoverageRelationStatistics Valid=291, Invalid=831, Unknown=0, NotChecked=0, Total=1122 [2021-07-13 18:25:01,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84020 states. [2021-07-13 18:25:02,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84020 to 64470. [2021-07-13 18:25:02,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64470 states, 64468 states have (on average 2.692839858534467) internal successors, (173602), 64469 states have internal predecessors, (173602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:25:03,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64470 states to 64470 states and 173602 transitions. [2021-07-13 18:25:03,056 INFO L78 Accepts]: Start accepts. Automaton has 64470 states and 173602 transitions. Word has length 356 [2021-07-13 18:25:03,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:25:03,057 INFO L482 AbstractCegarLoop]: Abstraction has 64470 states and 173602 transitions. [2021-07-13 18:25:03,057 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:25:03,057 INFO L276 IsEmpty]: Start isEmpty. Operand 64470 states and 173602 transitions. [2021-07-13 18:25:03,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2021-07-13 18:25:03,161 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:25:03,161 INFO L508 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:25:03,363 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:25:03,363 INFO L430 AbstractCegarLoop]: === Iteration 52 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:25:03,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:25:03,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1006996314, now seen corresponding path program 9 times [2021-07-13 18:25:03,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:25:03,364 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807507103] [2021-07-13 18:25:03,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:25:03,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:25:03,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1386 backedges. 27 proven. 1359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:25:03,600 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:25:03,600 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807507103] [2021-07-13 18:25:03,600 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807507103] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:25:03,600 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317253671] [2021-07-13 18:25:03,600 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:25:04,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-07-13 18:25:04,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:25:04,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 20 conjunts are in the unsatisfiable core [2021-07-13 18:25:04,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:25:04,587 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2021-07-13 18:25:04,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1386 backedges. 27 proven. 1359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:25:04,703 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317253671] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:25:04,703 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:25:04,703 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-07-13 18:25:04,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311409127] [2021-07-13 18:25:04,703 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-07-13 18:25:04,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:25:04,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-07-13 18:25:04,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-07-13 18:25:04,704 INFO L87 Difference]: Start difference. First operand 64470 states and 173602 transitions. Second operand has 23 states, 23 states have (on average 17.695652173913043) internal successors, (407), 23 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:25:05,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:25:05,357 INFO L93 Difference]: Finished difference Result 74359 states and 198824 transitions. [2021-07-13 18:25:05,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-07-13 18:25:05,357 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 17.695652173913043) internal successors, (407), 23 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 360 [2021-07-13 18:25:05,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:25:05,516 INFO L225 Difference]: With dead ends: 74359 [2021-07-13 18:25:05,516 INFO L226 Difference]: Without dead ends: 74359 [2021-07-13 18:25:05,517 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 365.5ms TimeCoverageRelationStatistics Valid=601, Invalid=1205, Unknown=0, NotChecked=0, Total=1806 [2021-07-13 18:25:05,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74359 states. [2021-07-13 18:25:06,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74359 to 66272. [2021-07-13 18:25:06,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66272 states, 66270 states have (on average 2.6891806247170664) internal successors, (178212), 66271 states have internal predecessors, (178212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:25:07,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66272 states to 66272 states and 178212 transitions. [2021-07-13 18:25:07,173 INFO L78 Accepts]: Start accepts. Automaton has 66272 states and 178212 transitions. Word has length 360 [2021-07-13 18:25:07,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:25:07,173 INFO L482 AbstractCegarLoop]: Abstraction has 66272 states and 178212 transitions. [2021-07-13 18:25:07,173 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 17.695652173913043) internal successors, (407), 23 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:25:07,173 INFO L276 IsEmpty]: Start isEmpty. Operand 66272 states and 178212 transitions. [2021-07-13 18:25:07,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2021-07-13 18:25:07,289 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:25:07,289 INFO L508 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:25:07,490 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,50 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:25:07,490 INFO L430 AbstractCegarLoop]: === Iteration 53 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:25:07,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:25:07,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1945042650, now seen corresponding path program 20 times [2021-07-13 18:25:07,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:25:07,491 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122390135] [2021-07-13 18:25:07,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:25:07,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:25:07,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1096 backedges. 24 proven. 1061 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-07-13 18:25:07,653 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:25:07,653 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122390135] [2021-07-13 18:25:07,653 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122390135] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:25:07,653 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673887888] [2021-07-13 18:25:07,654 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:25:07,780 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-13 18:25:07,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-13 18:25:07,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 20 conjunts are in the unsatisfiable core [2021-07-13 18:25:07,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-13 18:25:08,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1096 backedges. 24 proven. 1038 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-07-13 18:25:08,161 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673887888] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:25:08,161 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-13 18:25:08,161 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 20 [2021-07-13 18:25:08,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762640401] [2021-07-13 18:25:08,161 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-07-13 18:25:08,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:25:08,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-07-13 18:25:08,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-07-13 18:25:08,162 INFO L87 Difference]: Start difference. First operand 66272 states and 178212 transitions. Second operand has 20 states, 20 states have (on average 19.2) internal successors, (384), 20 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:25:08,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:25:08,910 INFO L93 Difference]: Finished difference Result 78842 states and 210214 transitions. [2021-07-13 18:25:08,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-07-13 18:25:08,910 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 19.2) internal successors, (384), 20 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 361 [2021-07-13 18:25:08,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:25:09,078 INFO L225 Difference]: With dead ends: 78842 [2021-07-13 18:25:09,079 INFO L226 Difference]: Without dead ends: 78842 [2021-07-13 18:25:09,079 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 363 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 241.3ms TimeCoverageRelationStatistics Valid=425, Invalid=981, Unknown=0, NotChecked=0, Total=1406 [2021-07-13 18:25:09,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78842 states. [2021-07-13 18:25:10,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78842 to 67632. [2021-07-13 18:25:10,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67632 states, 67630 states have (on average 2.69099512050865) internal successors, (181992), 67631 states have internal predecessors, (181992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:25:10,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67632 states to 67632 states and 181992 transitions. [2021-07-13 18:25:10,558 INFO L78 Accepts]: Start accepts. Automaton has 67632 states and 181992 transitions. Word has length 361 [2021-07-13 18:25:10,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:25:10,558 INFO L482 AbstractCegarLoop]: Abstraction has 67632 states and 181992 transitions. [2021-07-13 18:25:10,558 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 19.2) internal successors, (384), 20 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:25:10,558 INFO L276 IsEmpty]: Start isEmpty. Operand 67632 states and 181992 transitions. [2021-07-13 18:25:11,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2021-07-13 18:25:11,069 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:25:11,069 INFO L508 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:25:11,286 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:25:11,286 INFO L430 AbstractCegarLoop]: === Iteration 54 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:25:11,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:25:11,286 INFO L82 PathProgramCache]: Analyzing trace with hash -2007813128, now seen corresponding path program 21 times [2021-07-13 18:25:11,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:25:11,286 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454443994] [2021-07-13 18:25:11,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:25:11,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:25:11,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1096 backedges. 24 proven. 1038 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-07-13 18:25:11,494 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:25:11,494 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454443994] [2021-07-13 18:25:11,494 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454443994] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-13 18:25:11,494 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328524129] [2021-07-13 18:25:11,494 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-13 18:25:11,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-07-13 18:25:11,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat