/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-lit/fkp2013-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-17 01:39:50,200 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-17 01:39:50,204 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-17 01:39:50,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-09-17 01:39:50,244 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-17 01:39:50,245 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-17 01:39:50,246 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-17 01:39:50,247 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-17 01:39:50,249 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-17 01:39:50,250 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-17 01:39:50,252 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-17 01:39:50,254 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-17 01:39:50,256 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-17 01:39:50,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-17 01:39:50,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-17 01:39:50,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-17 01:39:50,264 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-17 01:39:50,268 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-17 01:39:50,269 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-17 01:39:50,270 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-17 01:39:50,270 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-17 01:39:50,272 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-17 01:39:50,272 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-17 01:39:50,273 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-17 01:39:50,273 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-17 01:39:50,273 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-17 01:39:50,274 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-17 01:39:50,275 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-17 01:39:50,276 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-17 01:39:50,304 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-17 01:39:50,305 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-17 01:39:50,306 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-17 01:39:50,306 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-17 01:39:50,307 INFO L138 SettingsManager]: * Use SBE=true [2020-09-17 01:39:50,307 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-17 01:39:50,307 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-17 01:39:50,307 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-17 01:39:50,307 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-17 01:39:50,308 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-17 01:39:50,308 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-17 01:39:50,308 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-17 01:39:50,308 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-17 01:39:50,309 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-17 01:39:50,309 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-17 01:39:50,309 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-17 01:39:50,309 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-17 01:39:50,309 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-17 01:39:50,310 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-17 01:39:50,310 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-17 01:39:50,310 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-17 01:39:50,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-17 01:39:50,311 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-17 01:39:50,311 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-17 01:39:50,311 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-17 01:39:50,311 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-17 01:39:50,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-17 01:39:50,312 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-17 01:39:50,312 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-17 01:39:50,312 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-17 01:39:50,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-17 01:39:50,858 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-17 01:39:50,862 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-17 01:39:50,864 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-17 01:39:50,865 INFO L275 PluginConnector]: CDTParser initialized [2020-09-17 01:39:50,866 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/fkp2013-2.i [2020-09-17 01:39:50,967 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d61a4f47a/045f45097e074094be22ca862f15d713/FLAG82e782a88 [2020-09-17 01:39:51,652 INFO L306 CDTParser]: Found 1 translation units. [2020-09-17 01:39:51,653 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/fkp2013-2.i [2020-09-17 01:39:51,675 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d61a4f47a/045f45097e074094be22ca862f15d713/FLAG82e782a88 [2020-09-17 01:39:51,883 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d61a4f47a/045f45097e074094be22ca862f15d713 [2020-09-17 01:39:51,901 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-17 01:39:51,910 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-17 01:39:51,914 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-17 01:39:51,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-17 01:39:51,919 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-17 01:39:51,920 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 01:39:51" (1/1) ... [2020-09-17 01:39:51,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b735ecf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:39:51, skipping insertion in model container [2020-09-17 01:39:51,926 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 01:39:51" (1/1) ... [2020-09-17 01:39:51,936 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-17 01:39:52,003 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-17 01:39:52,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-17 01:39:52,601 INFO L203 MainTranslator]: Completed pre-run [2020-09-17 01:39:52,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-17 01:39:52,764 INFO L208 MainTranslator]: Completed translation [2020-09-17 01:39:52,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:39:52 WrapperNode [2020-09-17 01:39:52,765 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-17 01:39:52,766 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-17 01:39:52,767 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-17 01:39:52,767 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-17 01:39:52,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:39:52" (1/1) ... [2020-09-17 01:39:52,797 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:39:52" (1/1) ... [2020-09-17 01:39:52,826 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-17 01:39:52,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-17 01:39:52,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-17 01:39:52,827 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-17 01:39:52,836 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:39:52" (1/1) ... [2020-09-17 01:39:52,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:39:52" (1/1) ... [2020-09-17 01:39:52,840 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:39:52" (1/1) ... [2020-09-17 01:39:52,840 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:39:52" (1/1) ... [2020-09-17 01:39:52,846 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:39:52" (1/1) ... [2020-09-17 01:39:52,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:39:52" (1/1) ... [2020-09-17 01:39:52,855 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:39:52" (1/1) ... [2020-09-17 01:39:52,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-17 01:39:52,859 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-17 01:39:52,859 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-17 01:39:52,860 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-17 01:39:52,861 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:39:52" (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 [2020-09-17 01:39:52,945 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-09-17 01:39:52,945 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-09-17 01:39:52,946 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-09-17 01:39:52,946 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-09-17 01:39:52,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-17 01:39:52,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-17 01:39:52,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-17 01:39:52,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-17 01:39:52,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-17 01:39:52,949 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-17 01:39:53,276 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-17 01:39:53,277 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-09-17 01:39:53,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 01:39:53 BoogieIcfgContainer [2020-09-17 01:39:53,282 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-17 01:39:53,284 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-17 01:39:53,284 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-17 01:39:53,288 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-17 01:39:53,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.09 01:39:51" (1/3) ... [2020-09-17 01:39:53,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39451509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 01:39:53, skipping insertion in model container [2020-09-17 01:39:53,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:39:52" (2/3) ... [2020-09-17 01:39:53,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39451509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 01:39:53, skipping insertion in model container [2020-09-17 01:39:53,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 01:39:53" (3/3) ... [2020-09-17 01:39:53,293 INFO L109 eAbstractionObserver]: Analyzing ICFG fkp2013-2.i [2020-09-17 01:39:53,305 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-17 01:39:53,306 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-17 01:39:53,316 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-17 01:39:53,317 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-17 01:39:53,350 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:53,350 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:53,350 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:53,351 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:53,351 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:53,351 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:53,352 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:53,352 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:53,352 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:53,353 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:53,353 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:53,354 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:53,354 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:53,354 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:53,355 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:53,355 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:53,355 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:53,356 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:53,356 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:53,356 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:53,357 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:53,361 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:53,362 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:53,362 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:53,362 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:53,363 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:53,375 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:53,376 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:53,376 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:53,376 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:53,377 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:53,377 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:53,402 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-17 01:39:53,425 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 01:39:53,426 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 01:39:53,426 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-17 01:39:53,426 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-17 01:39:53,426 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 01:39:53,426 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 01:39:53,426 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 01:39:53,427 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 01:39:53,444 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 51 transitions, 112 flow [2020-09-17 01:39:53,447 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 55 places, 51 transitions, 112 flow [2020-09-17 01:39:53,498 INFO L129 PetriNetUnfolder]: 3/61 cut-off events. [2020-09-17 01:39:53,499 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-17 01:39:53,506 INFO L80 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 61 events. 3/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 100 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 49. Up to 4 conditions per place. [2020-09-17 01:39:53,509 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 55 places, 51 transitions, 112 flow [2020-09-17 01:39:53,532 INFO L129 PetriNetUnfolder]: 3/61 cut-off events. [2020-09-17 01:39:53,532 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-17 01:39:53,533 INFO L80 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 61 events. 3/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 100 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 49. Up to 4 conditions per place. [2020-09-17 01:39:53,536 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 692 [2020-09-17 01:39:53,537 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-17 01:39:54,746 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-09-17 01:39:54,819 INFO L206 etLargeBlockEncoding]: Checked pairs total: 576 [2020-09-17 01:39:54,819 INFO L214 etLargeBlockEncoding]: Total number of compositions: 45 [2020-09-17 01:39:54,824 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 12 transitions, 34 flow [2020-09-17 01:39:54,838 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-09-17 01:39:54,840 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-09-17 01:39:54,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-17 01:39:54,849 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:39:54,850 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-17 01:39:54,851 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 01:39:54,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:39:54,859 INFO L82 PathProgramCache]: Analyzing trace with hash 208056, now seen corresponding path program 1 times [2020-09-17 01:39:54,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:39:54,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164718907] [2020-09-17 01:39:54,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:39:55,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:39:55,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 01:39:55,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164718907] [2020-09-17 01:39:55,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:39:55,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-17 01:39:55,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733681971] [2020-09-17 01:39:55,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 01:39:55,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:39:55,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 01:39:55,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 01:39:55,126 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-09-17 01:39:55,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:39:55,163 INFO L93 Difference]: Finished difference Result 35 states and 59 transitions. [2020-09-17 01:39:55,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 01:39:55,166 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-17 01:39:55,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:39:55,197 INFO L225 Difference]: With dead ends: 35 [2020-09-17 01:39:55,198 INFO L226 Difference]: Without dead ends: 31 [2020-09-17 01:39:55,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 01:39:55,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-17 01:39:55,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-09-17 01:39:55,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-17 01:39:55,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 51 transitions. [2020-09-17 01:39:55,245 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 51 transitions. Word has length 3 [2020-09-17 01:39:55,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:39:55,246 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 51 transitions. [2020-09-17 01:39:55,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 01:39:55,246 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 51 transitions. [2020-09-17 01:39:55,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-09-17 01:39:55,247 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:39:55,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:39:55,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-17 01:39:55,248 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 01:39:55,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:39:55,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1139052385, now seen corresponding path program 1 times [2020-09-17 01:39:55,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:39:55,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692269936] [2020-09-17 01:39:55,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:39:55,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:39:55,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 01:39:55,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692269936] [2020-09-17 01:39:55,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:39:55,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 01:39:55,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842740262] [2020-09-17 01:39:55,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 01:39:55,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:39:55,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 01:39:55,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-17 01:39:55,362 INFO L87 Difference]: Start difference. First operand 31 states and 51 transitions. Second operand 4 states. [2020-09-17 01:39:55,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:39:55,379 INFO L93 Difference]: Finished difference Result 26 states and 42 transitions. [2020-09-17 01:39:55,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-17 01:39:55,380 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-09-17 01:39:55,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:39:55,381 INFO L225 Difference]: With dead ends: 26 [2020-09-17 01:39:55,381 INFO L226 Difference]: Without dead ends: 24 [2020-09-17 01:39:55,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-17 01:39:55,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-09-17 01:39:55,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-09-17 01:39:55,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-09-17 01:39:55,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 39 transitions. [2020-09-17 01:39:55,387 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 39 transitions. Word has length 7 [2020-09-17 01:39:55,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:39:55,387 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 39 transitions. [2020-09-17 01:39:55,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 01:39:55,388 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 39 transitions. [2020-09-17 01:39:55,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-17 01:39:55,388 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:39:55,389 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-09-17 01:39:55,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-17 01:39:55,389 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 01:39:55,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:39:55,390 INFO L82 PathProgramCache]: Analyzing trace with hash -950894116, now seen corresponding path program 1 times [2020-09-17 01:39:55,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:39:55,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401313314] [2020-09-17 01:39:55,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:39:55,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 01:39:55,424 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 01:39:55,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 01:39:55,463 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 01:39:55,501 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-17 01:39:55,501 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-17 01:39:55,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-17 01:39:55,504 WARN L363 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-17 01:39:55,505 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-09-17 01:39:55,525 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,525 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,525 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,525 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,526 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,526 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,526 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,526 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,526 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,527 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,529 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,529 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,529 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,531 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,532 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,532 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,532 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,532 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,533 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,533 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,533 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,533 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,534 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,534 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,537 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,538 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,538 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,538 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,539 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,539 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,540 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,540 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,540 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,540 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,540 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,541 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,541 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,542 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,542 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,542 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,546 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,547 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,547 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,548 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,548 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,549 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,549 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,551 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,551 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,551 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,552 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,552 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,553 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,554 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,554 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,554 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,554 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,554 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,556 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,557 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,557 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,557 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,557 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,557 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:55,559 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-17 01:39:55,559 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 01:39:55,559 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 01:39:55,560 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-17 01:39:55,560 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-17 01:39:55,560 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 01:39:55,560 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 01:39:55,560 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 01:39:55,560 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 01:39:55,564 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 69 transitions, 162 flow [2020-09-17 01:39:55,564 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 69 transitions, 162 flow [2020-09-17 01:39:55,602 INFO L129 PetriNetUnfolder]: 4/83 cut-off events. [2020-09-17 01:39:55,603 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-09-17 01:39:55,604 INFO L80 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 83 events. 4/83 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 141 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 92. Up to 6 conditions per place. [2020-09-17 01:39:55,606 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 69 transitions, 162 flow [2020-09-17 01:39:55,622 INFO L129 PetriNetUnfolder]: 4/83 cut-off events. [2020-09-17 01:39:55,622 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-09-17 01:39:55,624 INFO L80 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 83 events. 4/83 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 141 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 92. Up to 6 conditions per place. [2020-09-17 01:39:55,626 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1108 [2020-09-17 01:39:55,626 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-17 01:39:56,849 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-09-17 01:39:56,931 INFO L206 etLargeBlockEncoding]: Checked pairs total: 964 [2020-09-17 01:39:56,932 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-09-17 01:39:56,932 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 66 flow [2020-09-17 01:39:56,950 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 224 states. [2020-09-17 01:39:56,951 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states. [2020-09-17 01:39:56,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-17 01:39:56,951 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:39:56,952 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-17 01:39:56,952 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:39:56,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:39:56,952 INFO L82 PathProgramCache]: Analyzing trace with hash 354555, now seen corresponding path program 1 times [2020-09-17 01:39:56,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:39:56,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25150597] [2020-09-17 01:39:56,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:39:56,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:39:57,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 01:39:57,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25150597] [2020-09-17 01:39:57,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:39:57,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-17 01:39:57,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351707834] [2020-09-17 01:39:57,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 01:39:57,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:39:57,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 01:39:57,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 01:39:57,020 INFO L87 Difference]: Start difference. First operand 224 states. Second operand 3 states. [2020-09-17 01:39:57,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:39:57,051 INFO L93 Difference]: Finished difference Result 185 states and 459 transitions. [2020-09-17 01:39:57,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 01:39:57,051 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-17 01:39:57,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:39:57,057 INFO L225 Difference]: With dead ends: 185 [2020-09-17 01:39:57,057 INFO L226 Difference]: Without dead ends: 171 [2020-09-17 01:39:57,057 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 01:39:57,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-09-17 01:39:57,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-09-17 01:39:57,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-09-17 01:39:57,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 418 transitions. [2020-09-17 01:39:57,083 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 418 transitions. Word has length 3 [2020-09-17 01:39:57,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:39:57,083 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 418 transitions. [2020-09-17 01:39:57,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 01:39:57,084 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 418 transitions. [2020-09-17 01:39:57,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-17 01:39:57,084 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:39:57,084 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:39:57,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-17 01:39:57,085 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:39:57,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:39:57,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1106209149, now seen corresponding path program 1 times [2020-09-17 01:39:57,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:39:57,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223539916] [2020-09-17 01:39:57,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:39:57,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:39:57,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 01:39:57,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223539916] [2020-09-17 01:39:57,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:39:57,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 01:39:57,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969288280] [2020-09-17 01:39:57,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 01:39:57,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:39:57,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 01:39:57,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 01:39:57,152 INFO L87 Difference]: Start difference. First operand 171 states and 418 transitions. Second operand 5 states. [2020-09-17 01:39:57,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:39:57,214 INFO L93 Difference]: Finished difference Result 205 states and 460 transitions. [2020-09-17 01:39:57,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 01:39:57,214 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-17 01:39:57,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:39:57,217 INFO L225 Difference]: With dead ends: 205 [2020-09-17 01:39:57,217 INFO L226 Difference]: Without dead ends: 201 [2020-09-17 01:39:57,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-17 01:39:57,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-09-17 01:39:57,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 162. [2020-09-17 01:39:57,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-09-17 01:39:57,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 399 transitions. [2020-09-17 01:39:57,237 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 399 transitions. Word has length 9 [2020-09-17 01:39:57,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:39:57,238 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 399 transitions. [2020-09-17 01:39:57,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 01:39:57,238 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 399 transitions. [2020-09-17 01:39:57,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-17 01:39:57,239 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:39:57,240 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:39:57,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-17 01:39:57,240 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:39:57,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:39:57,240 INFO L82 PathProgramCache]: Analyzing trace with hash 583411714, now seen corresponding path program 1 times [2020-09-17 01:39:57,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:39:57,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269129734] [2020-09-17 01:39:57,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:39:57,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:39:57,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 01:39:57,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269129734] [2020-09-17 01:39:57,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:39:57,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 01:39:57,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967529072] [2020-09-17 01:39:57,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 01:39:57,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:39:57,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 01:39:57,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 01:39:57,305 INFO L87 Difference]: Start difference. First operand 162 states and 399 transitions. Second operand 5 states. [2020-09-17 01:39:57,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:39:57,377 INFO L93 Difference]: Finished difference Result 189 states and 423 transitions. [2020-09-17 01:39:57,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 01:39:57,378 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-17 01:39:57,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:39:57,380 INFO L225 Difference]: With dead ends: 189 [2020-09-17 01:39:57,380 INFO L226 Difference]: Without dead ends: 185 [2020-09-17 01:39:57,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-17 01:39:57,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-09-17 01:39:57,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 153. [2020-09-17 01:39:57,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-09-17 01:39:57,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 367 transitions. [2020-09-17 01:39:57,394 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 367 transitions. Word has length 13 [2020-09-17 01:39:57,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:39:57,395 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 367 transitions. [2020-09-17 01:39:57,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 01:39:57,395 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 367 transitions. [2020-09-17 01:39:57,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-17 01:39:57,397 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:39:57,397 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:39:57,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-17 01:39:57,397 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:39:57,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:39:57,398 INFO L82 PathProgramCache]: Analyzing trace with hash 903154619, now seen corresponding path program 1 times [2020-09-17 01:39:57,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:39:57,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710804797] [2020-09-17 01:39:57,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:39:57,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 01:39:57,415 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 01:39:57,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 01:39:57,428 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 01:39:57,438 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-17 01:39:57,438 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-17 01:39:57,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-17 01:39:57,439 WARN L363 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-17 01:39:57,441 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-09-17 01:39:57,457 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,457 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,458 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,458 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,458 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,458 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,458 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,459 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,459 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,459 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,459 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,459 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,459 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,460 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,460 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,460 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,460 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,460 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,462 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,462 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,462 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,463 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,463 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,463 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,463 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,465 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,465 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,466 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,466 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,467 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,467 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,467 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,467 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,467 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,467 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,468 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,468 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,468 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,468 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,468 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,468 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,469 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,469 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,469 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,469 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,469 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,469 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,470 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,470 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,470 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,470 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,470 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,471 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,471 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,471 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,471 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,471 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,471 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,471 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,472 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,472 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,472 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,472 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,472 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,473 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,473 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,473 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,473 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,475 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,475 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,475 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,475 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,475 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,477 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,477 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,477 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,477 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,477 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,479 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,479 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,479 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,479 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,479 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,479 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,480 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,480 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,481 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,481 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,481 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,481 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,484 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,484 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,484 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,484 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,485 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,485 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:39:57,486 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-09-17 01:39:57,487 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 01:39:57,487 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 01:39:57,487 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-17 01:39:57,487 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-17 01:39:57,487 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 01:39:57,487 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 01:39:57,487 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 01:39:57,487 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 01:39:57,489 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 87 transitions, 216 flow [2020-09-17 01:39:57,489 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 87 transitions, 216 flow [2020-09-17 01:39:57,507 INFO L129 PetriNetUnfolder]: 5/105 cut-off events. [2020-09-17 01:39:57,507 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-09-17 01:39:57,508 INFO L80 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 105 events. 5/105 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 187 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 119. Up to 8 conditions per place. [2020-09-17 01:39:57,511 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 87 transitions, 216 flow [2020-09-17 01:39:57,528 INFO L129 PetriNetUnfolder]: 5/105 cut-off events. [2020-09-17 01:39:57,529 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-09-17 01:39:57,530 INFO L80 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 105 events. 5/105 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 187 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 119. Up to 8 conditions per place. [2020-09-17 01:39:57,533 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1608 [2020-09-17 01:39:57,533 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-17 01:39:59,136 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-09-17 01:39:59,345 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1796 [2020-09-17 01:39:59,345 INFO L214 etLargeBlockEncoding]: Total number of compositions: 73 [2020-09-17 01:39:59,345 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 27 transitions, 96 flow [2020-09-17 01:39:59,374 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 683 states. [2020-09-17 01:39:59,375 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states. [2020-09-17 01:39:59,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-17 01:39:59,375 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:39:59,375 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-17 01:39:59,376 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:39:59,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:39:59,376 INFO L82 PathProgramCache]: Analyzing trace with hash 535749, now seen corresponding path program 1 times [2020-09-17 01:39:59,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:39:59,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24211626] [2020-09-17 01:39:59,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:39:59,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:39:59,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 01:39:59,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24211626] [2020-09-17 01:39:59,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:39:59,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-17 01:39:59,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73505477] [2020-09-17 01:39:59,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 01:39:59,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:39:59,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 01:39:59,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 01:39:59,409 INFO L87 Difference]: Start difference. First operand 683 states. Second operand 3 states. [2020-09-17 01:39:59,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:39:59,437 INFO L93 Difference]: Finished difference Result 600 states and 1886 transitions. [2020-09-17 01:39:59,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 01:39:59,438 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-17 01:39:59,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:39:59,444 INFO L225 Difference]: With dead ends: 600 [2020-09-17 01:39:59,444 INFO L226 Difference]: Without dead ends: 559 [2020-09-17 01:39:59,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 01:39:59,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-09-17 01:39:59,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2020-09-17 01:39:59,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-09-17 01:39:59,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 1737 transitions. [2020-09-17 01:39:59,481 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 1737 transitions. Word has length 3 [2020-09-17 01:39:59,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:39:59,481 INFO L479 AbstractCegarLoop]: Abstraction has 559 states and 1737 transitions. [2020-09-17 01:39:59,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 01:39:59,481 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 1737 transitions. [2020-09-17 01:39:59,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-17 01:39:59,482 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:39:59,482 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:39:59,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-17 01:39:59,482 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:39:59,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:39:59,483 INFO L82 PathProgramCache]: Analyzing trace with hash -404806880, now seen corresponding path program 1 times [2020-09-17 01:39:59,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:39:59,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709222680] [2020-09-17 01:39:59,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:39:59,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:39:59,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 01:39:59,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709222680] [2020-09-17 01:39:59,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:39:59,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 01:39:59,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777448272] [2020-09-17 01:39:59,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 01:39:59,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:39:59,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 01:39:59,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 01:39:59,560 INFO L87 Difference]: Start difference. First operand 559 states and 1737 transitions. Second operand 5 states. [2020-09-17 01:39:59,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:39:59,634 INFO L93 Difference]: Finished difference Result 817 states and 2317 transitions. [2020-09-17 01:39:59,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 01:39:59,634 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-17 01:39:59,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:39:59,641 INFO L225 Difference]: With dead ends: 817 [2020-09-17 01:39:59,642 INFO L226 Difference]: Without dead ends: 812 [2020-09-17 01:39:59,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-17 01:39:59,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-09-17 01:39:59,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 585. [2020-09-17 01:39:59,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-09-17 01:39:59,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1832 transitions. [2020-09-17 01:39:59,669 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1832 transitions. Word has length 9 [2020-09-17 01:39:59,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:39:59,669 INFO L479 AbstractCegarLoop]: Abstraction has 585 states and 1832 transitions. [2020-09-17 01:39:59,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 01:39:59,670 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1832 transitions. [2020-09-17 01:39:59,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-17 01:39:59,671 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:39:59,671 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:39:59,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-17 01:39:59,672 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:39:59,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:39:59,672 INFO L82 PathProgramCache]: Analyzing trace with hash -669323978, now seen corresponding path program 1 times [2020-09-17 01:39:59,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:39:59,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732112277] [2020-09-17 01:39:59,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:39:59,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:39:59,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 01:39:59,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732112277] [2020-09-17 01:39:59,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:39:59,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 01:39:59,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567760146] [2020-09-17 01:39:59,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 01:39:59,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:39:59,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 01:39:59,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 01:39:59,729 INFO L87 Difference]: Start difference. First operand 585 states and 1832 transitions. Second operand 5 states. [2020-09-17 01:39:59,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:39:59,846 INFO L93 Difference]: Finished difference Result 843 states and 2406 transitions. [2020-09-17 01:39:59,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 01:39:59,846 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-17 01:39:59,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:39:59,852 INFO L225 Difference]: With dead ends: 843 [2020-09-17 01:39:59,853 INFO L226 Difference]: Without dead ends: 836 [2020-09-17 01:39:59,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-17 01:39:59,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2020-09-17 01:39:59,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 611. [2020-09-17 01:39:59,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-09-17 01:39:59,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1906 transitions. [2020-09-17 01:39:59,880 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1906 transitions. Word has length 13 [2020-09-17 01:39:59,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:39:59,881 INFO L479 AbstractCegarLoop]: Abstraction has 611 states and 1906 transitions. [2020-09-17 01:39:59,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 01:39:59,881 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1906 transitions. [2020-09-17 01:39:59,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 01:39:59,882 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:39:59,882 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:39:59,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-17 01:39:59,883 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:39:59,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:39:59,883 INFO L82 PathProgramCache]: Analyzing trace with hash -56737855, now seen corresponding path program 1 times [2020-09-17 01:39:59,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:39:59,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448225127] [2020-09-17 01:39:59,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:39:59,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:39:59,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 01:39:59,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448225127] [2020-09-17 01:39:59,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818373035] [2020-09-17 01:39:59,950 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 [2020-09-17 01:40:00,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:00,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-17 01:40:00,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:40:00,082 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 01:40:00,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:40:00,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-17 01:40:00,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438665398] [2020-09-17 01:40:00,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 01:40:00,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:00,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 01:40:00,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-17 01:40:00,085 INFO L87 Difference]: Start difference. First operand 611 states and 1906 transitions. Second operand 9 states. [2020-09-17 01:40:00,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:40:00,319 INFO L93 Difference]: Finished difference Result 1059 states and 2818 transitions. [2020-09-17 01:40:00,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 01:40:00,320 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-09-17 01:40:00,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:40:00,327 INFO L225 Difference]: With dead ends: 1059 [2020-09-17 01:40:00,327 INFO L226 Difference]: Without dead ends: 1052 [2020-09-17 01:40:00,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-17 01:40:00,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2020-09-17 01:40:00,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 591. [2020-09-17 01:40:00,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-09-17 01:40:00,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1840 transitions. [2020-09-17 01:40:00,357 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1840 transitions. Word has length 15 [2020-09-17 01:40:00,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:40:00,358 INFO L479 AbstractCegarLoop]: Abstraction has 591 states and 1840 transitions. [2020-09-17 01:40:00,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 01:40:00,358 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1840 transitions. [2020-09-17 01:40:00,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 01:40:00,360 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:00,360 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:40:00,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-09-17 01:40:00,576 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:40:00,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:00,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1024744543, now seen corresponding path program 2 times [2020-09-17 01:40:00,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:00,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393417893] [2020-09-17 01:40:00,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:00,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:00,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 01:40:00,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393417893] [2020-09-17 01:40:00,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:40:00,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 01:40:00,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150316504] [2020-09-17 01:40:00,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 01:40:00,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:00,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 01:40:00,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 01:40:00,648 INFO L87 Difference]: Start difference. First operand 591 states and 1840 transitions. Second operand 7 states. [2020-09-17 01:40:00,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:40:00,834 INFO L93 Difference]: Finished difference Result 1053 states and 2807 transitions. [2020-09-17 01:40:00,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 01:40:00,835 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-17 01:40:00,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:40:00,842 INFO L225 Difference]: With dead ends: 1053 [2020-09-17 01:40:00,842 INFO L226 Difference]: Without dead ends: 1045 [2020-09-17 01:40:00,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-17 01:40:00,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2020-09-17 01:40:00,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 536. [2020-09-17 01:40:00,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-09-17 01:40:00,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1688 transitions. [2020-09-17 01:40:00,870 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1688 transitions. Word has length 15 [2020-09-17 01:40:00,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:40:00,871 INFO L479 AbstractCegarLoop]: Abstraction has 536 states and 1688 transitions. [2020-09-17 01:40:00,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 01:40:00,871 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1688 transitions. [2020-09-17 01:40:00,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-17 01:40:00,872 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:00,872 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:40:00,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-17 01:40:00,873 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:40:00,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:00,873 INFO L82 PathProgramCache]: Analyzing trace with hash 68174732, now seen corresponding path program 1 times [2020-09-17 01:40:00,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:00,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683870930] [2020-09-17 01:40:00,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:00,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:00,932 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 01:40:00,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683870930] [2020-09-17 01:40:00,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:40:00,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 01:40:00,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517924006] [2020-09-17 01:40:00,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 01:40:00,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:00,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 01:40:00,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 01:40:00,935 INFO L87 Difference]: Start difference. First operand 536 states and 1688 transitions. Second operand 5 states. [2020-09-17 01:40:01,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:40:01,009 INFO L93 Difference]: Finished difference Result 736 states and 2123 transitions. [2020-09-17 01:40:01,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 01:40:01,009 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-17 01:40:01,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:40:01,015 INFO L225 Difference]: With dead ends: 736 [2020-09-17 01:40:01,015 INFO L226 Difference]: Without dead ends: 728 [2020-09-17 01:40:01,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-17 01:40:01,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-09-17 01:40:01,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 549. [2020-09-17 01:40:01,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2020-09-17 01:40:01,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 1684 transitions. [2020-09-17 01:40:01,037 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 1684 transitions. Word has length 17 [2020-09-17 01:40:01,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:40:01,038 INFO L479 AbstractCegarLoop]: Abstraction has 549 states and 1684 transitions. [2020-09-17 01:40:01,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 01:40:01,038 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 1684 transitions. [2020-09-17 01:40:01,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-17 01:40:01,039 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:01,039 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:40:01,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-17 01:40:01,039 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:40:01,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:01,040 INFO L82 PathProgramCache]: Analyzing trace with hash 2109628021, now seen corresponding path program 1 times [2020-09-17 01:40:01,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:01,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029214889] [2020-09-17 01:40:01,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:01,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 01:40:01,064 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 01:40:01,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 01:40:01,079 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 01:40:01,090 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-17 01:40:01,091 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-17 01:40:01,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-17 01:40:01,092 WARN L363 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-17 01:40:01,092 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-09-17 01:40:01,109 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,110 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,110 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,110 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,111 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,111 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,112 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,112 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,112 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,113 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,113 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,113 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,113 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,113 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,114 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,114 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,114 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,114 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,115 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,115 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,115 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,115 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,115 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,115 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,116 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,116 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,116 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,116 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,116 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,117 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,117 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,117 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,117 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,118 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,118 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,118 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,118 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,119 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,119 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,119 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,119 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,119 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,120 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,120 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,120 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,120 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,120 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,121 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,121 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,121 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,121 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,121 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,122 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,122 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,122 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,122 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,122 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,123 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,123 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,123 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,123 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,124 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,124 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,124 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,124 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,124 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,125 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,125 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,125 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,125 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,125 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,126 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,126 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,126 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,126 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,126 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,127 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,127 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,127 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,127 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,127 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,127 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,128 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,128 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,129 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,129 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,130 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,130 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,130 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,132 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,132 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,132 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,132 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,133 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,134 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,134 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,134 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,135 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,135 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,137 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,137 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,137 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,137 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,138 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,139 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,139 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,140 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,140 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,140 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,140 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,142 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,142 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,142 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,142 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,142 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,143 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,144 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,144 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,144 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,145 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,145 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,145 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,147 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,148 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,148 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,148 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,148 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,149 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:01,151 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-09-17 01:40:01,152 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 01:40:01,152 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 01:40:01,152 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-17 01:40:01,152 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-17 01:40:01,152 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 01:40:01,152 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 01:40:01,152 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 01:40:01,153 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 01:40:01,155 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 105 transitions, 274 flow [2020-09-17 01:40:01,155 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 105 transitions, 274 flow [2020-09-17 01:40:01,192 INFO L129 PetriNetUnfolder]: 6/127 cut-off events. [2020-09-17 01:40:01,192 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-09-17 01:40:01,194 INFO L80 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 127 events. 6/127 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 211 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 147. Up to 10 conditions per place. [2020-09-17 01:40:01,200 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 105 transitions, 274 flow [2020-09-17 01:40:01,235 INFO L129 PetriNetUnfolder]: 6/127 cut-off events. [2020-09-17 01:40:01,235 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-09-17 01:40:01,237 INFO L80 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 127 events. 6/127 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 211 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 147. Up to 10 conditions per place. [2020-09-17 01:40:01,241 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2192 [2020-09-17 01:40:01,242 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-17 01:40:03,279 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-09-17 01:40:03,357 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2240 [2020-09-17 01:40:03,357 INFO L214 etLargeBlockEncoding]: Total number of compositions: 92 [2020-09-17 01:40:03,357 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 33 transitions, 130 flow [2020-09-17 01:40:03,472 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 2060 states. [2020-09-17 01:40:03,472 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states. [2020-09-17 01:40:03,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-17 01:40:03,473 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:03,473 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-17 01:40:03,473 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 01:40:03,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:03,474 INFO L82 PathProgramCache]: Analyzing trace with hash 753552, now seen corresponding path program 1 times [2020-09-17 01:40:03,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:03,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625152347] [2020-09-17 01:40:03,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:03,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:03,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 01:40:03,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625152347] [2020-09-17 01:40:03,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:40:03,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-17 01:40:03,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641238718] [2020-09-17 01:40:03,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 01:40:03,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:03,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 01:40:03,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 01:40:03,499 INFO L87 Difference]: Start difference. First operand 2060 states. Second operand 3 states. [2020-09-17 01:40:03,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:40:03,551 INFO L93 Difference]: Finished difference Result 1889 states and 7217 transitions. [2020-09-17 01:40:03,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 01:40:03,552 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-17 01:40:03,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:40:03,567 INFO L225 Difference]: With dead ends: 1889 [2020-09-17 01:40:03,567 INFO L226 Difference]: Without dead ends: 1767 [2020-09-17 01:40:03,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 01:40:03,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2020-09-17 01:40:03,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1767. [2020-09-17 01:40:03,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1767 states. [2020-09-17 01:40:03,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 6690 transitions. [2020-09-17 01:40:03,659 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 6690 transitions. Word has length 3 [2020-09-17 01:40:03,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:40:03,659 INFO L479 AbstractCegarLoop]: Abstraction has 1767 states and 6690 transitions. [2020-09-17 01:40:03,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 01:40:03,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 6690 transitions. [2020-09-17 01:40:03,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-17 01:40:03,660 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:03,660 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:40:03,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-17 01:40:03,660 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 01:40:03,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:03,661 INFO L82 PathProgramCache]: Analyzing trace with hash -260829075, now seen corresponding path program 1 times [2020-09-17 01:40:03,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:03,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346123026] [2020-09-17 01:40:03,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:03,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:03,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 01:40:03,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346123026] [2020-09-17 01:40:03,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:40:03,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 01:40:03,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260286177] [2020-09-17 01:40:03,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 01:40:03,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:03,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 01:40:03,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 01:40:03,704 INFO L87 Difference]: Start difference. First operand 1767 states and 6690 transitions. Second operand 5 states. [2020-09-17 01:40:03,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:40:03,808 INFO L93 Difference]: Finished difference Result 2905 states and 10138 transitions. [2020-09-17 01:40:03,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 01:40:03,809 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-17 01:40:03,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:40:03,835 INFO L225 Difference]: With dead ends: 2905 [2020-09-17 01:40:03,835 INFO L226 Difference]: Without dead ends: 2899 [2020-09-17 01:40:03,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-17 01:40:03,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-09-17 01:40:03,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1966. [2020-09-17 01:40:03,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1966 states. [2020-09-17 01:40:03,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 7503 transitions. [2020-09-17 01:40:03,996 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 7503 transitions. Word has length 9 [2020-09-17 01:40:03,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:40:03,996 INFO L479 AbstractCegarLoop]: Abstraction has 1966 states and 7503 transitions. [2020-09-17 01:40:03,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 01:40:03,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 7503 transitions. [2020-09-17 01:40:03,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-17 01:40:03,997 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:03,997 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:40:03,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-17 01:40:03,998 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 01:40:03,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:03,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1408743431, now seen corresponding path program 1 times [2020-09-17 01:40:03,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:03,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474318971] [2020-09-17 01:40:03,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:04,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:04,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 01:40:04,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474318971] [2020-09-17 01:40:04,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:40:04,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 01:40:04,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273119091] [2020-09-17 01:40:04,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 01:40:04,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:04,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 01:40:04,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 01:40:04,062 INFO L87 Difference]: Start difference. First operand 1966 states and 7503 transitions. Second operand 5 states. [2020-09-17 01:40:04,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:40:04,154 INFO L93 Difference]: Finished difference Result 3204 states and 11312 transitions. [2020-09-17 01:40:04,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 01:40:04,154 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-17 01:40:04,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:40:04,193 INFO L225 Difference]: With dead ends: 3204 [2020-09-17 01:40:04,194 INFO L226 Difference]: Without dead ends: 3194 [2020-09-17 01:40:04,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-17 01:40:04,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2020-09-17 01:40:04,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 2200. [2020-09-17 01:40:04,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2020-09-17 01:40:04,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 8453 transitions. [2020-09-17 01:40:04,300 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 8453 transitions. Word has length 13 [2020-09-17 01:40:04,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:40:04,302 INFO L479 AbstractCegarLoop]: Abstraction has 2200 states and 8453 transitions. [2020-09-17 01:40:04,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 01:40:04,302 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 8453 transitions. [2020-09-17 01:40:04,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 01:40:04,303 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:04,303 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:40:04,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-17 01:40:04,304 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 01:40:04,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:04,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1555768808, now seen corresponding path program 1 times [2020-09-17 01:40:04,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:04,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453740082] [2020-09-17 01:40:04,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:04,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:04,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 01:40:04,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453740082] [2020-09-17 01:40:04,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095854293] [2020-09-17 01:40:04,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-09-17 01:40:04,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:04,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-17 01:40:04,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:40:04,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 01:40:04,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:40:04,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-17 01:40:04,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987153336] [2020-09-17 01:40:04,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 01:40:04,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:04,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 01:40:04,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-17 01:40:04,502 INFO L87 Difference]: Start difference. First operand 2200 states and 8453 transitions. Second operand 9 states. [2020-09-17 01:40:04,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:40:04,753 INFO L93 Difference]: Finished difference Result 4556 states and 14911 transitions. [2020-09-17 01:40:04,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 01:40:04,754 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-09-17 01:40:04,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:40:04,791 INFO L225 Difference]: With dead ends: 4556 [2020-09-17 01:40:04,791 INFO L226 Difference]: Without dead ends: 4546 [2020-09-17 01:40:04,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-17 01:40:04,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4546 states. [2020-09-17 01:40:04,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4546 to 2157. [2020-09-17 01:40:04,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2157 states. [2020-09-17 01:40:04,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2157 states to 2157 states and 8278 transitions. [2020-09-17 01:40:04,931 INFO L78 Accepts]: Start accepts. Automaton has 2157 states and 8278 transitions. Word has length 15 [2020-09-17 01:40:04,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:40:04,931 INFO L479 AbstractCegarLoop]: Abstraction has 2157 states and 8278 transitions. [2020-09-17 01:40:04,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 01:40:04,931 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 8278 transitions. [2020-09-17 01:40:04,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 01:40:04,932 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:04,932 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:40:05,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-09-17 01:40:05,204 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 01:40:05,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:05,204 INFO L82 PathProgramCache]: Analyzing trace with hash -887756896, now seen corresponding path program 2 times [2020-09-17 01:40:05,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:05,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634283972] [2020-09-17 01:40:05,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:05,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:05,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 01:40:05,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634283972] [2020-09-17 01:40:05,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:40:05,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 01:40:05,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061120335] [2020-09-17 01:40:05,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 01:40:05,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:05,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 01:40:05,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 01:40:05,279 INFO L87 Difference]: Start difference. First operand 2157 states and 8278 transitions. Second operand 7 states. [2020-09-17 01:40:05,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:40:05,520 INFO L93 Difference]: Finished difference Result 4612 states and 15111 transitions. [2020-09-17 01:40:05,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 01:40:05,521 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-17 01:40:05,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:40:05,540 INFO L225 Difference]: With dead ends: 4612 [2020-09-17 01:40:05,541 INFO L226 Difference]: Without dead ends: 4601 [2020-09-17 01:40:05,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-17 01:40:05,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2020-09-17 01:40:05,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 2035. [2020-09-17 01:40:05,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2035 states. [2020-09-17 01:40:05,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 7845 transitions. [2020-09-17 01:40:05,658 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 7845 transitions. Word has length 15 [2020-09-17 01:40:05,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:40:05,658 INFO L479 AbstractCegarLoop]: Abstraction has 2035 states and 7845 transitions. [2020-09-17 01:40:05,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 01:40:05,658 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 7845 transitions. [2020-09-17 01:40:05,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-17 01:40:05,659 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:05,659 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:40:05,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-17 01:40:05,660 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 01:40:05,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:05,660 INFO L82 PathProgramCache]: Analyzing trace with hash 695111130, now seen corresponding path program 1 times [2020-09-17 01:40:05,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:05,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060757932] [2020-09-17 01:40:05,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:05,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:05,734 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 01:40:05,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060757932] [2020-09-17 01:40:05,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:40:05,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 01:40:05,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657822199] [2020-09-17 01:40:05,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 01:40:05,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:05,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 01:40:05,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 01:40:05,737 INFO L87 Difference]: Start difference. First operand 2035 states and 7845 transitions. Second operand 5 states. [2020-09-17 01:40:05,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:40:05,834 INFO L93 Difference]: Finished difference Result 3265 states and 11681 transitions. [2020-09-17 01:40:05,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 01:40:05,834 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-17 01:40:05,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:40:05,849 INFO L225 Difference]: With dead ends: 3265 [2020-09-17 01:40:05,849 INFO L226 Difference]: Without dead ends: 3250 [2020-09-17 01:40:05,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-17 01:40:05,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3250 states. [2020-09-17 01:40:05,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3250 to 2281. [2020-09-17 01:40:05,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2281 states. [2020-09-17 01:40:05,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 8755 transitions. [2020-09-17 01:40:05,949 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 8755 transitions. Word has length 17 [2020-09-17 01:40:05,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:40:05,949 INFO L479 AbstractCegarLoop]: Abstraction has 2281 states and 8755 transitions. [2020-09-17 01:40:05,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 01:40:05,949 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 8755 transitions. [2020-09-17 01:40:05,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 01:40:05,951 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:05,951 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:40:05,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-17 01:40:05,951 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 01:40:05,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:05,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1754455113, now seen corresponding path program 1 times [2020-09-17 01:40:05,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:05,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215551886] [2020-09-17 01:40:05,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:05,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:06,033 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-17 01:40:06,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215551886] [2020-09-17 01:40:06,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929262279] [2020-09-17 01:40:06,034 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 [2020-09-17 01:40:06,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:06,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-17 01:40:06,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:40:06,154 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-17 01:40:06,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:40:06,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-17 01:40:06,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755802663] [2020-09-17 01:40:06,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 01:40:06,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:06,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 01:40:06,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-17 01:40:06,159 INFO L87 Difference]: Start difference. First operand 2281 states and 8755 transitions. Second operand 9 states. [2020-09-17 01:40:06,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:40:06,405 INFO L93 Difference]: Finished difference Result 4825 states and 15986 transitions. [2020-09-17 01:40:06,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 01:40:06,406 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-09-17 01:40:06,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:40:06,434 INFO L225 Difference]: With dead ends: 4825 [2020-09-17 01:40:06,435 INFO L226 Difference]: Without dead ends: 4813 [2020-09-17 01:40:06,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-17 01:40:06,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4813 states. [2020-09-17 01:40:06,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4813 to 2305. [2020-09-17 01:40:06,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2305 states. [2020-09-17 01:40:06,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 8815 transitions. [2020-09-17 01:40:06,639 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 8815 transitions. Word has length 19 [2020-09-17 01:40:06,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:40:06,641 INFO L479 AbstractCegarLoop]: Abstraction has 2305 states and 8815 transitions. [2020-09-17 01:40:06,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 01:40:06,642 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 8815 transitions. [2020-09-17 01:40:06,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 01:40:06,645 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:06,645 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:40:06,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 01:40:06,861 INFO L427 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 01:40:06,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:06,862 INFO L82 PathProgramCache]: Analyzing trace with hash -131464925, now seen corresponding path program 1 times [2020-09-17 01:40:06,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:06,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238580819] [2020-09-17 01:40:06,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:06,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:06,932 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-17 01:40:06,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238580819] [2020-09-17 01:40:06,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454356500] [2020-09-17 01:40:06,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-09-17 01:40:07,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:07,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-17 01:40:07,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:40:07,046 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-17 01:40:07,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:40:07,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-17 01:40:07,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048977227] [2020-09-17 01:40:07,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 01:40:07,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:07,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 01:40:07,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-17 01:40:07,048 INFO L87 Difference]: Start difference. First operand 2305 states and 8815 transitions. Second operand 9 states. [2020-09-17 01:40:07,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:40:07,306 INFO L93 Difference]: Finished difference Result 4942 states and 16410 transitions. [2020-09-17 01:40:07,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 01:40:07,307 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-09-17 01:40:07,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:40:07,324 INFO L225 Difference]: With dead ends: 4942 [2020-09-17 01:40:07,324 INFO L226 Difference]: Without dead ends: 4925 [2020-09-17 01:40:07,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-17 01:40:07,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4925 states. [2020-09-17 01:40:07,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4925 to 2299. [2020-09-17 01:40:07,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2299 states. [2020-09-17 01:40:07,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 8782 transitions. [2020-09-17 01:40:07,428 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 8782 transitions. Word has length 19 [2020-09-17 01:40:07,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:40:07,429 INFO L479 AbstractCegarLoop]: Abstraction has 2299 states and 8782 transitions. [2020-09-17 01:40:07,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 01:40:07,429 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 8782 transitions. [2020-09-17 01:40:07,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 01:40:07,430 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:07,430 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:40:07,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 01:40:07,647 INFO L427 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 01:40:07,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:07,647 INFO L82 PathProgramCache]: Analyzing trace with hash -2013120191, now seen corresponding path program 2 times [2020-09-17 01:40:07,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:07,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491137963] [2020-09-17 01:40:07,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:07,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:07,711 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 01:40:07,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491137963] [2020-09-17 01:40:07,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:40:07,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 01:40:07,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048589492] [2020-09-17 01:40:07,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 01:40:07,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:07,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 01:40:07,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 01:40:07,713 INFO L87 Difference]: Start difference. First operand 2299 states and 8782 transitions. Second operand 7 states. [2020-09-17 01:40:07,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:40:07,935 INFO L93 Difference]: Finished difference Result 4934 states and 16393 transitions. [2020-09-17 01:40:07,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 01:40:07,936 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-17 01:40:07,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:40:07,953 INFO L225 Difference]: With dead ends: 4934 [2020-09-17 01:40:07,953 INFO L226 Difference]: Without dead ends: 4917 [2020-09-17 01:40:07,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-17 01:40:07,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4917 states. [2020-09-17 01:40:08,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4917 to 2216. [2020-09-17 01:40:08,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2216 states. [2020-09-17 01:40:08,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 8477 transitions. [2020-09-17 01:40:08,140 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 8477 transitions. Word has length 19 [2020-09-17 01:40:08,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:40:08,142 INFO L479 AbstractCegarLoop]: Abstraction has 2216 states and 8477 transitions. [2020-09-17 01:40:08,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 01:40:08,142 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 8477 transitions. [2020-09-17 01:40:08,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 01:40:08,144 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:08,144 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:40:08,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-17 01:40:08,144 INFO L427 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 01:40:08,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:08,145 INFO L82 PathProgramCache]: Analyzing trace with hash -2013113743, now seen corresponding path program 2 times [2020-09-17 01:40:08,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:08,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444899437] [2020-09-17 01:40:08,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:08,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:08,237 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 01:40:08,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444899437] [2020-09-17 01:40:08,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:40:08,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 01:40:08,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740210885] [2020-09-17 01:40:08,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 01:40:08,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:08,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 01:40:08,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 01:40:08,240 INFO L87 Difference]: Start difference. First operand 2216 states and 8477 transitions. Second operand 7 states. [2020-09-17 01:40:08,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:40:08,474 INFO L93 Difference]: Finished difference Result 4774 states and 15828 transitions. [2020-09-17 01:40:08,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 01:40:08,475 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-17 01:40:08,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:40:08,490 INFO L225 Difference]: With dead ends: 4774 [2020-09-17 01:40:08,491 INFO L226 Difference]: Without dead ends: 4757 [2020-09-17 01:40:08,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-17 01:40:08,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4757 states. [2020-09-17 01:40:08,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4757 to 2150. [2020-09-17 01:40:08,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2150 states. [2020-09-17 01:40:08,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 8243 transitions. [2020-09-17 01:40:08,594 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 8243 transitions. Word has length 19 [2020-09-17 01:40:08,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:40:08,594 INFO L479 AbstractCegarLoop]: Abstraction has 2150 states and 8243 transitions. [2020-09-17 01:40:08,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 01:40:08,594 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 8243 transitions. [2020-09-17 01:40:08,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 01:40:08,596 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:08,596 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:40:08,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-09-17 01:40:08,597 INFO L427 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 01:40:08,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:08,597 INFO L82 PathProgramCache]: Analyzing trace with hash -9146414, now seen corresponding path program 1 times [2020-09-17 01:40:08,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:08,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410461469] [2020-09-17 01:40:08,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:08,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:08,692 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 01:40:08,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410461469] [2020-09-17 01:40:08,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923925174] [2020-09-17 01:40:08,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-09-17 01:40:08,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:08,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-17 01:40:08,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:40:08,813 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 01:40:08,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:40:08,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-17 01:40:08,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514651219] [2020-09-17 01:40:08,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 01:40:08,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:08,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 01:40:08,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-17 01:40:08,815 INFO L87 Difference]: Start difference. First operand 2150 states and 8243 transitions. Second operand 11 states. [2020-09-17 01:40:09,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:40:09,487 INFO L93 Difference]: Finished difference Result 6025 states and 18746 transitions. [2020-09-17 01:40:09,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:40:09,488 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-09-17 01:40:09,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:40:09,504 INFO L225 Difference]: With dead ends: 6025 [2020-09-17 01:40:09,504 INFO L226 Difference]: Without dead ends: 6017 [2020-09-17 01:40:09,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-17 01:40:09,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6017 states. [2020-09-17 01:40:09,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6017 to 2117. [2020-09-17 01:40:09,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2117 states. [2020-09-17 01:40:09,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 8106 transitions. [2020-09-17 01:40:09,624 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 8106 transitions. Word has length 21 [2020-09-17 01:40:09,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:40:09,624 INFO L479 AbstractCegarLoop]: Abstraction has 2117 states and 8106 transitions. [2020-09-17 01:40:09,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 01:40:09,625 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 8106 transitions. [2020-09-17 01:40:09,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 01:40:09,627 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:09,627 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:40:09,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-09-17 01:40:09,840 INFO L427 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 01:40:09,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:09,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1890795232, now seen corresponding path program 2 times [2020-09-17 01:40:09,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:09,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866416320] [2020-09-17 01:40:09,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:09,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:09,984 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-17 01:40:09,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866416320] [2020-09-17 01:40:09,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119606112] [2020-09-17 01:40:09,985 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 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 [2020-09-17 01:40:10,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 01:40:10,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 01:40:10,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-17 01:40:10,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:40:10,109 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-17 01:40:10,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:40:10,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-17 01:40:10,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775074257] [2020-09-17 01:40:10,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 01:40:10,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:10,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 01:40:10,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-17 01:40:10,111 INFO L87 Difference]: Start difference. First operand 2117 states and 8106 transitions. Second operand 11 states. [2020-09-17 01:40:10,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:40:10,812 INFO L93 Difference]: Finished difference Result 5914 states and 18384 transitions. [2020-09-17 01:40:10,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:40:10,813 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-09-17 01:40:10,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:40:10,823 INFO L225 Difference]: With dead ends: 5914 [2020-09-17 01:40:10,823 INFO L226 Difference]: Without dead ends: 5903 [2020-09-17 01:40:10,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-17 01:40:10,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5903 states. [2020-09-17 01:40:10,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5903 to 2085. [2020-09-17 01:40:10,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2085 states. [2020-09-17 01:40:10,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 7975 transitions. [2020-09-17 01:40:10,914 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 7975 transitions. Word has length 21 [2020-09-17 01:40:10,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:40:10,914 INFO L479 AbstractCegarLoop]: Abstraction has 2085 states and 7975 transitions. [2020-09-17 01:40:10,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 01:40:10,915 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 7975 transitions. [2020-09-17 01:40:10,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 01:40:10,916 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:10,916 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:40:11,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 01:40:11,131 INFO L427 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 01:40:11,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:11,131 INFO L82 PathProgramCache]: Analyzing trace with hash 180724060, now seen corresponding path program 3 times [2020-09-17 01:40:11,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:11,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003040465] [2020-09-17 01:40:11,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:11,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:11,221 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-17 01:40:11,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003040465] [2020-09-17 01:40:11,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52387187] [2020-09-17 01:40:11,222 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 [2020-09-17 01:40:11,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-17 01:40:11,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 01:40:11,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-17 01:40:11,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:40:11,330 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-17 01:40:11,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:40:11,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-17 01:40:11,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114065263] [2020-09-17 01:40:11,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 01:40:11,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:11,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 01:40:11,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-17 01:40:11,333 INFO L87 Difference]: Start difference. First operand 2085 states and 7975 transitions. Second operand 11 states. [2020-09-17 01:40:11,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:40:11,902 INFO L93 Difference]: Finished difference Result 5907 states and 18375 transitions. [2020-09-17 01:40:11,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:40:11,903 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-09-17 01:40:11,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:40:11,973 INFO L225 Difference]: With dead ends: 5907 [2020-09-17 01:40:11,973 INFO L226 Difference]: Without dead ends: 5899 [2020-09-17 01:40:11,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-17 01:40:12,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5899 states. [2020-09-17 01:40:12,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5899 to 2008. [2020-09-17 01:40:12,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2008 states. [2020-09-17 01:40:12,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 7698 transitions. [2020-09-17 01:40:12,068 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 7698 transitions. Word has length 21 [2020-09-17 01:40:12,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:40:12,069 INFO L479 AbstractCegarLoop]: Abstraction has 2008 states and 7698 transitions. [2020-09-17 01:40:12,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 01:40:12,069 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 7698 transitions. [2020-09-17 01:40:12,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 01:40:12,073 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:12,073 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:40:12,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-09-17 01:40:12,289 INFO L427 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 01:40:12,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:12,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1783759286, now seen corresponding path program 4 times [2020-09-17 01:40:12,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:12,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749657594] [2020-09-17 01:40:12,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:12,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:12,375 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-17 01:40:12,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749657594] [2020-09-17 01:40:12,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454173425] [2020-09-17 01:40:12,376 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 [2020-09-17 01:40:12,443 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 01:40:12,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 01:40:12,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-17 01:40:12,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:40:12,476 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-17 01:40:12,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:40:12,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-17 01:40:12,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064423117] [2020-09-17 01:40:12,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 01:40:12,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:12,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 01:40:12,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-17 01:40:12,478 INFO L87 Difference]: Start difference. First operand 2008 states and 7698 transitions. Second operand 11 states. [2020-09-17 01:40:13,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:40:13,088 INFO L93 Difference]: Finished difference Result 5835 states and 18155 transitions. [2020-09-17 01:40:13,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:40:13,089 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-09-17 01:40:13,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:40:13,101 INFO L225 Difference]: With dead ends: 5835 [2020-09-17 01:40:13,102 INFO L226 Difference]: Without dead ends: 5824 [2020-09-17 01:40:13,102 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-17 01:40:13,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5824 states. [2020-09-17 01:40:13,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5824 to 1976. [2020-09-17 01:40:13,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1976 states. [2020-09-17 01:40:13,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 7567 transitions. [2020-09-17 01:40:13,211 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 7567 transitions. Word has length 21 [2020-09-17 01:40:13,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:40:13,211 INFO L479 AbstractCegarLoop]: Abstraction has 1976 states and 7567 transitions. [2020-09-17 01:40:13,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 01:40:13,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 7567 transitions. [2020-09-17 01:40:13,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 01:40:13,213 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:13,213 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:40:13,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-09-17 01:40:13,428 INFO L427 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 01:40:13,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:13,428 INFO L82 PathProgramCache]: Analyzing trace with hash -964809789, now seen corresponding path program 1 times [2020-09-17 01:40:13,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:13,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706777899] [2020-09-17 01:40:13,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:13,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:13,480 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 01:40:13,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706777899] [2020-09-17 01:40:13,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:40:13,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 01:40:13,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357279110] [2020-09-17 01:40:13,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 01:40:13,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:13,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 01:40:13,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 01:40:13,482 INFO L87 Difference]: Start difference. First operand 1976 states and 7567 transitions. Second operand 5 states. [2020-09-17 01:40:13,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:40:13,562 INFO L93 Difference]: Finished difference Result 3016 states and 10840 transitions. [2020-09-17 01:40:13,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 01:40:13,563 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-17 01:40:13,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:40:13,570 INFO L225 Difference]: With dead ends: 3016 [2020-09-17 01:40:13,570 INFO L226 Difference]: Without dead ends: 3000 [2020-09-17 01:40:13,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-17 01:40:13,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3000 states. [2020-09-17 01:40:13,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3000 to 2183. [2020-09-17 01:40:13,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2183 states. [2020-09-17 01:40:13,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2183 states to 2183 states and 8210 transitions. [2020-09-17 01:40:13,635 INFO L78 Accepts]: Start accepts. Automaton has 2183 states and 8210 transitions. Word has length 21 [2020-09-17 01:40:13,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:40:13,635 INFO L479 AbstractCegarLoop]: Abstraction has 2183 states and 8210 transitions. [2020-09-17 01:40:13,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 01:40:13,635 INFO L276 IsEmpty]: Start isEmpty. Operand 2183 states and 8210 transitions. [2020-09-17 01:40:13,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 01:40:13,637 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:13,637 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:40:13,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-09-17 01:40:13,638 INFO L427 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 01:40:13,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:13,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1873231848, now seen corresponding path program 5 times [2020-09-17 01:40:13,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:13,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278663412] [2020-09-17 01:40:13,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:13,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:13,718 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 01:40:13,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278663412] [2020-09-17 01:40:13,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:40:13,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 01:40:13,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772831855] [2020-09-17 01:40:13,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 01:40:13,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:13,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 01:40:13,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 01:40:13,720 INFO L87 Difference]: Start difference. First operand 2183 states and 8210 transitions. Second operand 9 states. [2020-09-17 01:40:14,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:40:14,382 INFO L93 Difference]: Finished difference Result 6150 states and 19247 transitions. [2020-09-17 01:40:14,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:40:14,383 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-17 01:40:14,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:40:14,393 INFO L225 Difference]: With dead ends: 6150 [2020-09-17 01:40:14,393 INFO L226 Difference]: Without dead ends: 6139 [2020-09-17 01:40:14,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 01:40:14,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6139 states. [2020-09-17 01:40:14,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6139 to 2096. [2020-09-17 01:40:14,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2096 states. [2020-09-17 01:40:14,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2096 states to 2096 states and 7876 transitions. [2020-09-17 01:40:14,480 INFO L78 Accepts]: Start accepts. Automaton has 2096 states and 7876 transitions. Word has length 21 [2020-09-17 01:40:14,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:40:14,480 INFO L479 AbstractCegarLoop]: Abstraction has 2096 states and 7876 transitions. [2020-09-17 01:40:14,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 01:40:14,480 INFO L276 IsEmpty]: Start isEmpty. Operand 2096 states and 7876 transitions. [2020-09-17 01:40:14,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 01:40:14,482 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:14,482 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:40:14,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-09-17 01:40:14,482 INFO L427 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 01:40:14,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:14,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1867041768, now seen corresponding path program 6 times [2020-09-17 01:40:14,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:14,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913946666] [2020-09-17 01:40:14,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:14,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:14,568 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 01:40:14,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913946666] [2020-09-17 01:40:14,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:40:14,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 01:40:14,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931437185] [2020-09-17 01:40:14,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 01:40:14,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:14,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 01:40:14,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 01:40:14,570 INFO L87 Difference]: Start difference. First operand 2096 states and 7876 transitions. Second operand 9 states. [2020-09-17 01:40:15,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:40:15,158 INFO L93 Difference]: Finished difference Result 6017 states and 18791 transitions. [2020-09-17 01:40:15,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:40:15,159 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-17 01:40:15,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:40:15,168 INFO L225 Difference]: With dead ends: 6017 [2020-09-17 01:40:15,168 INFO L226 Difference]: Without dead ends: 6002 [2020-09-17 01:40:15,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 01:40:15,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6002 states. [2020-09-17 01:40:15,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6002 to 1965. [2020-09-17 01:40:15,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2020-09-17 01:40:15,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 7429 transitions. [2020-09-17 01:40:15,251 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 7429 transitions. Word has length 21 [2020-09-17 01:40:15,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:40:15,252 INFO L479 AbstractCegarLoop]: Abstraction has 1965 states and 7429 transitions. [2020-09-17 01:40:15,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 01:40:15,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 7429 transitions. [2020-09-17 01:40:15,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-17 01:40:15,254 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:15,254 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:40:15,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-09-17 01:40:15,255 INFO L427 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 01:40:15,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:15,255 INFO L82 PathProgramCache]: Analyzing trace with hash 150840888, now seen corresponding path program 1 times [2020-09-17 01:40:15,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:15,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944398542] [2020-09-17 01:40:15,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:15,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 01:40:15,269 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 01:40:15,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 01:40:15,281 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 01:40:15,289 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-17 01:40:15,289 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-17 01:40:15,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-09-17 01:40:15,290 WARN L363 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-17 01:40:15,291 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-09-17 01:40:15,304 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,304 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,304 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,304 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,304 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,305 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,305 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,305 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,305 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,306 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,306 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,306 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,306 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,306 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,307 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,307 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,307 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,307 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,308 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,308 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,308 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,308 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,308 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,308 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,309 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,309 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,309 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,309 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,309 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,309 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,309 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,310 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,310 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,310 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,310 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,310 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,310 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,310 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,311 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,311 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,311 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,311 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,311 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,311 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,311 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,312 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,312 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,312 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,312 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,312 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,312 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,313 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,313 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,313 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,313 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,313 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,313 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,313 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,314 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,314 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,314 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,314 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,314 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,314 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,315 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,315 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,315 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,315 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,315 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,316 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,316 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,316 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,316 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,316 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,317 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,317 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,317 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,317 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,317 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,317 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,317 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,318 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,318 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,318 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,318 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,319 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,319 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,319 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,319 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,319 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,319 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,319 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,320 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,320 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,320 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,320 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,321 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,321 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,321 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,321 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,321 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,321 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,321 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,322 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,322 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,322 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,322 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,322 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,323 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,323 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,329 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,329 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,329 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,329 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,330 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,335 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,335 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,336 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,336 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,336 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,338 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,338 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,338 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,338 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,339 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,340 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,340 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,340 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,340 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,341 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,347 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,347 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,347 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,347 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,347 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,348 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,349 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,349 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,349 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,349 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,349 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,349 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,350 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,351 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,351 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,351 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,351 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,351 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,352 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,353 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,353 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,353 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,353 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,353 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,354 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,355 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,355 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,355 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,355 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,355 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:40:15,356 INFO L251 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-09-17 01:40:15,357 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 01:40:15,357 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 01:40:15,357 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-17 01:40:15,357 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-17 01:40:15,357 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 01:40:15,357 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 01:40:15,357 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 01:40:15,357 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 01:40:15,362 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 139 places, 123 transitions, 336 flow [2020-09-17 01:40:15,362 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 139 places, 123 transitions, 336 flow [2020-09-17 01:40:15,387 INFO L129 PetriNetUnfolder]: 7/149 cut-off events. [2020-09-17 01:40:15,387 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-09-17 01:40:15,389 INFO L80 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 149 events. 7/149 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 256 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 176. Up to 12 conditions per place. [2020-09-17 01:40:15,394 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 139 places, 123 transitions, 336 flow [2020-09-17 01:40:15,412 INFO L129 PetriNetUnfolder]: 7/149 cut-off events. [2020-09-17 01:40:15,413 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-09-17 01:40:15,414 INFO L80 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 149 events. 7/149 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 256 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 176. Up to 12 conditions per place. [2020-09-17 01:40:15,418 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2860 [2020-09-17 01:40:15,419 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-17 01:40:17,573 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-09-17 01:40:17,657 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3096 [2020-09-17 01:40:17,657 INFO L214 etLargeBlockEncoding]: Total number of compositions: 115 [2020-09-17 01:40:17,657 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 39 transitions, 168 flow [2020-09-17 01:40:17,971 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 6191 states. [2020-09-17 01:40:17,971 INFO L276 IsEmpty]: Start isEmpty. Operand 6191 states. [2020-09-17 01:40:17,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-17 01:40:17,972 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:17,972 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-17 01:40:17,972 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:40:17,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:17,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1011964, now seen corresponding path program 1 times [2020-09-17 01:40:17,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:17,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970435888] [2020-09-17 01:40:17,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:17,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:18,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 01:40:18,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970435888] [2020-09-17 01:40:18,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:40:18,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-17 01:40:18,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039548840] [2020-09-17 01:40:18,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 01:40:18,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:18,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 01:40:18,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 01:40:18,004 INFO L87 Difference]: Start difference. First operand 6191 states. Second operand 3 states. [2020-09-17 01:40:18,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:40:18,074 INFO L93 Difference]: Finished difference Result 5844 states and 26316 transitions. [2020-09-17 01:40:18,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 01:40:18,074 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-17 01:40:18,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:40:18,089 INFO L225 Difference]: With dead ends: 5844 [2020-09-17 01:40:18,089 INFO L226 Difference]: Without dead ends: 5479 [2020-09-17 01:40:18,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 01:40:18,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5479 states. [2020-09-17 01:40:18,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5479 to 5479. [2020-09-17 01:40:18,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5479 states. [2020-09-17 01:40:18,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5479 states to 5479 states and 24493 transitions. [2020-09-17 01:40:18,341 INFO L78 Accepts]: Start accepts. Automaton has 5479 states and 24493 transitions. Word has length 3 [2020-09-17 01:40:18,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:40:18,341 INFO L479 AbstractCegarLoop]: Abstraction has 5479 states and 24493 transitions. [2020-09-17 01:40:18,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 01:40:18,341 INFO L276 IsEmpty]: Start isEmpty. Operand 5479 states and 24493 transitions. [2020-09-17 01:40:18,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-17 01:40:18,342 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:18,342 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:40:18,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-09-17 01:40:18,342 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:40:18,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:18,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1084774388, now seen corresponding path program 1 times [2020-09-17 01:40:18,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:18,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415436864] [2020-09-17 01:40:18,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:18,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:18,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 01:40:18,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415436864] [2020-09-17 01:40:18,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:40:18,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 01:40:18,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399218946] [2020-09-17 01:40:18,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 01:40:18,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:18,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 01:40:18,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 01:40:18,397 INFO L87 Difference]: Start difference. First operand 5479 states and 24493 transitions. Second operand 5 states. [2020-09-17 01:40:18,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:40:18,516 INFO L93 Difference]: Finished difference Result 9673 states and 40333 transitions. [2020-09-17 01:40:18,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 01:40:18,516 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-17 01:40:18,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:40:18,541 INFO L225 Difference]: With dead ends: 9673 [2020-09-17 01:40:18,541 INFO L226 Difference]: Without dead ends: 9666 [2020-09-17 01:40:18,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-17 01:40:18,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9666 states. [2020-09-17 01:40:18,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9666 to 6331. [2020-09-17 01:40:18,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6331 states. [2020-09-17 01:40:18,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6331 states to 6331 states and 28544 transitions. [2020-09-17 01:40:18,753 INFO L78 Accepts]: Start accepts. Automaton has 6331 states and 28544 transitions. Word has length 9 [2020-09-17 01:40:18,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:40:18,753 INFO L479 AbstractCegarLoop]: Abstraction has 6331 states and 28544 transitions. [2020-09-17 01:40:18,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 01:40:18,753 INFO L276 IsEmpty]: Start isEmpty. Operand 6331 states and 28544 transitions. [2020-09-17 01:40:18,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-17 01:40:18,753 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:18,754 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:40:18,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-09-17 01:40:18,754 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:40:18,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:18,755 INFO L82 PathProgramCache]: Analyzing trace with hash 2112403116, now seen corresponding path program 1 times [2020-09-17 01:40:18,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:18,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763439919] [2020-09-17 01:40:18,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:18,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:18,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 01:40:18,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763439919] [2020-09-17 01:40:18,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:40:18,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 01:40:18,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22670947] [2020-09-17 01:40:18,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 01:40:18,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:18,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 01:40:18,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 01:40:18,806 INFO L87 Difference]: Start difference. First operand 6331 states and 28544 transitions. Second operand 5 states. [2020-09-17 01:40:18,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:40:18,937 INFO L93 Difference]: Finished difference Result 11081 states and 46826 transitions. [2020-09-17 01:40:18,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 01:40:18,937 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-17 01:40:18,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:40:18,965 INFO L225 Difference]: With dead ends: 11081 [2020-09-17 01:40:18,965 INFO L226 Difference]: Without dead ends: 11068 [2020-09-17 01:40:18,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-17 01:40:19,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11068 states. [2020-09-17 01:40:19,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11068 to 7391. [2020-09-17 01:40:19,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7391 states. [2020-09-17 01:40:20,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7391 states to 7391 states and 33694 transitions. [2020-09-17 01:40:20,097 INFO L78 Accepts]: Start accepts. Automaton has 7391 states and 33694 transitions. Word has length 13 [2020-09-17 01:40:20,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:40:20,097 INFO L479 AbstractCegarLoop]: Abstraction has 7391 states and 33694 transitions. [2020-09-17 01:40:20,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 01:40:20,098 INFO L276 IsEmpty]: Start isEmpty. Operand 7391 states and 33694 transitions. [2020-09-17 01:40:20,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 01:40:20,098 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:20,098 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:40:20,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-09-17 01:40:20,099 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:40:20,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:20,099 INFO L82 PathProgramCache]: Analyzing trace with hash -28983895, now seen corresponding path program 1 times [2020-09-17 01:40:20,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:20,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241971791] [2020-09-17 01:40:20,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:20,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:20,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 01:40:20,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241971791] [2020-09-17 01:40:20,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302773003] [2020-09-17 01:40:20,156 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 [2020-09-17 01:40:20,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:20,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-17 01:40:20,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:40:20,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 01:40:20,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:40:20,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-17 01:40:20,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273589091] [2020-09-17 01:40:20,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 01:40:20,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:20,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 01:40:20,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-17 01:40:20,278 INFO L87 Difference]: Start difference. First operand 7391 states and 33694 transitions. Second operand 9 states. [2020-09-17 01:40:20,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:40:20,622 INFO L93 Difference]: Finished difference Result 16749 states and 66010 transitions. [2020-09-17 01:40:20,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 01:40:20,622 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-09-17 01:40:20,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:40:20,663 INFO L225 Difference]: With dead ends: 16749 [2020-09-17 01:40:20,663 INFO L226 Difference]: Without dead ends: 16736 [2020-09-17 01:40:20,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-17 01:40:20,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16736 states. [2020-09-17 01:40:20,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16736 to 7303. [2020-09-17 01:40:20,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7303 states. [2020-09-17 01:40:20,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7303 states to 7303 states and 33260 transitions. [2020-09-17 01:40:20,997 INFO L78 Accepts]: Start accepts. Automaton has 7303 states and 33260 transitions. Word has length 15 [2020-09-17 01:40:20,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:40:20,998 INFO L479 AbstractCegarLoop]: Abstraction has 7303 states and 33260 transitions. [2020-09-17 01:40:20,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 01:40:20,998 INFO L276 IsEmpty]: Start isEmpty. Operand 7303 states and 33260 transitions. [2020-09-17 01:40:20,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 01:40:20,998 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:20,998 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:40:21,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 01:40:21,199 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:40:21,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:21,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1500121559, now seen corresponding path program 2 times [2020-09-17 01:40:21,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:21,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730181964] [2020-09-17 01:40:21,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:21,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:21,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 01:40:21,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730181964] [2020-09-17 01:40:21,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:40:21,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 01:40:21,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959211511] [2020-09-17 01:40:21,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 01:40:21,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:21,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 01:40:21,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 01:40:21,266 INFO L87 Difference]: Start difference. First operand 7303 states and 33260 transitions. Second operand 7 states. [2020-09-17 01:40:21,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:40:21,592 INFO L93 Difference]: Finished difference Result 17085 states and 67393 transitions. [2020-09-17 01:40:21,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 01:40:21,592 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-17 01:40:21,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:40:21,635 INFO L225 Difference]: With dead ends: 17085 [2020-09-17 01:40:21,635 INFO L226 Difference]: Without dead ends: 17071 [2020-09-17 01:40:21,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-17 01:40:21,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17071 states. [2020-09-17 01:40:22,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17071 to 7048. [2020-09-17 01:40:22,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7048 states. [2020-09-17 01:40:22,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7048 states to 7048 states and 32136 transitions. [2020-09-17 01:40:22,060 INFO L78 Accepts]: Start accepts. Automaton has 7048 states and 32136 transitions. Word has length 15 [2020-09-17 01:40:22,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:40:22,060 INFO L479 AbstractCegarLoop]: Abstraction has 7048 states and 32136 transitions. [2020-09-17 01:40:22,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 01:40:22,060 INFO L276 IsEmpty]: Start isEmpty. Operand 7048 states and 32136 transitions. [2020-09-17 01:40:22,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-17 01:40:22,061 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:22,061 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:40:22,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-09-17 01:40:22,062 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:40:22,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:22,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1891696605, now seen corresponding path program 1 times [2020-09-17 01:40:22,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:22,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406096992] [2020-09-17 01:40:22,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:22,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:22,117 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 01:40:22,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406096992] [2020-09-17 01:40:22,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:40:22,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 01:40:22,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095318441] [2020-09-17 01:40:22,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 01:40:22,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:22,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 01:40:22,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 01:40:22,119 INFO L87 Difference]: Start difference. First operand 7048 states and 32136 transitions. Second operand 5 states. [2020-09-17 01:40:22,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:40:22,279 INFO L93 Difference]: Finished difference Result 12234 states and 52488 transitions. [2020-09-17 01:40:22,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 01:40:22,280 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-17 01:40:22,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:40:22,327 INFO L225 Difference]: With dead ends: 12234 [2020-09-17 01:40:22,327 INFO L226 Difference]: Without dead ends: 12212 [2020-09-17 01:40:22,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-17 01:40:22,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12212 states. [2020-09-17 01:40:22,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12212 to 8342. [2020-09-17 01:40:22,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8342 states. [2020-09-17 01:40:22,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8342 states to 8342 states and 38278 transitions. [2020-09-17 01:40:22,615 INFO L78 Accepts]: Start accepts. Automaton has 8342 states and 38278 transitions. Word has length 17 [2020-09-17 01:40:22,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:40:22,615 INFO L479 AbstractCegarLoop]: Abstraction has 8342 states and 38278 transitions. [2020-09-17 01:40:22,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 01:40:22,615 INFO L276 IsEmpty]: Start isEmpty. Operand 8342 states and 38278 transitions. [2020-09-17 01:40:22,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 01:40:22,616 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:22,616 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:40:22,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-09-17 01:40:22,617 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:40:22,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:22,617 INFO L82 PathProgramCache]: Analyzing trace with hash -74039136, now seen corresponding path program 1 times [2020-09-17 01:40:22,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:22,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004168580] [2020-09-17 01:40:22,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:22,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:22,677 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 01:40:22,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004168580] [2020-09-17 01:40:22,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708361773] [2020-09-17 01:40:22,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 01:40:22,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:22,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-17 01:40:22,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:40:22,800 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 01:40:22,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:40:22,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-17 01:40:22,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581750162] [2020-09-17 01:40:22,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 01:40:22,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:22,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 01:40:22,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-17 01:40:22,802 INFO L87 Difference]: Start difference. First operand 8342 states and 38278 transitions. Second operand 9 states. [2020-09-17 01:40:23,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:40:23,246 INFO L93 Difference]: Finished difference Result 19016 states and 76191 transitions. [2020-09-17 01:40:23,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 01:40:23,246 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-09-17 01:40:23,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:40:23,290 INFO L225 Difference]: With dead ends: 19016 [2020-09-17 01:40:23,291 INFO L226 Difference]: Without dead ends: 18998 [2020-09-17 01:40:23,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-17 01:40:23,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18998 states. [2020-09-17 01:40:23,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18998 to 8452. [2020-09-17 01:40:23,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8452 states. [2020-09-17 01:40:23,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8452 states to 8452 states and 38704 transitions. [2020-09-17 01:40:23,632 INFO L78 Accepts]: Start accepts. Automaton has 8452 states and 38704 transitions. Word has length 19 [2020-09-17 01:40:23,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:40:23,632 INFO L479 AbstractCegarLoop]: Abstraction has 8452 states and 38704 transitions. [2020-09-17 01:40:23,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 01:40:23,633 INFO L276 IsEmpty]: Start isEmpty. Operand 8452 states and 38704 transitions. [2020-09-17 01:40:23,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 01:40:23,633 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:23,634 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:40:23,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-09-17 01:40:23,837 INFO L427 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:40:23,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:23,838 INFO L82 PathProgramCache]: Analyzing trace with hash -274460668, now seen corresponding path program 1 times [2020-09-17 01:40:23,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:23,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962796798] [2020-09-17 01:40:23,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:23,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:23,903 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 01:40:23,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962796798] [2020-09-17 01:40:23,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024183781] [2020-09-17 01:40:23,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-09-17 01:40:24,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:24,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-17 01:40:24,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:40:24,062 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 01:40:24,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:40:24,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-17 01:40:24,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971771851] [2020-09-17 01:40:24,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 01:40:24,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:24,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 01:40:24,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-17 01:40:24,065 INFO L87 Difference]: Start difference. First operand 8452 states and 38704 transitions. Second operand 9 states. [2020-09-17 01:40:24,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:40:24,502 INFO L93 Difference]: Finished difference Result 19670 states and 79028 transitions. [2020-09-17 01:40:24,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 01:40:24,502 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-09-17 01:40:24,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:40:24,588 INFO L225 Difference]: With dead ends: 19670 [2020-09-17 01:40:24,588 INFO L226 Difference]: Without dead ends: 19645 [2020-09-17 01:40:24,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-17 01:40:24,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19645 states. [2020-09-17 01:40:25,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19645 to 8480. [2020-09-17 01:40:25,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8480 states. [2020-09-17 01:40:25,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8480 states to 8480 states and 38825 transitions. [2020-09-17 01:40:25,107 INFO L78 Accepts]: Start accepts. Automaton has 8480 states and 38825 transitions. Word has length 19 [2020-09-17 01:40:25,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:40:25,107 INFO L479 AbstractCegarLoop]: Abstraction has 8480 states and 38825 transitions. [2020-09-17 01:40:25,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 01:40:25,107 INFO L276 IsEmpty]: Start isEmpty. Operand 8480 states and 38825 transitions. [2020-09-17 01:40:25,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 01:40:25,109 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:25,109 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:40:25,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-09-17 01:40:25,324 INFO L427 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:40:25,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:25,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1149256224, now seen corresponding path program 2 times [2020-09-17 01:40:25,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:25,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350780896] [2020-09-17 01:40:25,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:25,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:25,388 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 01:40:25,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350780896] [2020-09-17 01:40:25,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:40:25,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 01:40:25,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853900668] [2020-09-17 01:40:25,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 01:40:25,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:25,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 01:40:25,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 01:40:25,390 INFO L87 Difference]: Start difference. First operand 8480 states and 38825 transitions. Second operand 7 states. [2020-09-17 01:40:25,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:40:25,776 INFO L93 Difference]: Finished difference Result 19852 states and 79846 transitions. [2020-09-17 01:40:25,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 01:40:25,777 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-17 01:40:25,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:40:25,822 INFO L225 Difference]: With dead ends: 19852 [2020-09-17 01:40:25,822 INFO L226 Difference]: Without dead ends: 19827 [2020-09-17 01:40:25,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-17 01:40:25,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19827 states. [2020-09-17 01:40:26,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19827 to 8379. [2020-09-17 01:40:26,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8379 states. [2020-09-17 01:40:26,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8379 states to 8379 states and 38406 transitions. [2020-09-17 01:40:26,165 INFO L78 Accepts]: Start accepts. Automaton has 8379 states and 38406 transitions. Word has length 19 [2020-09-17 01:40:26,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:40:26,165 INFO L479 AbstractCegarLoop]: Abstraction has 8379 states and 38406 transitions. [2020-09-17 01:40:26,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 01:40:26,165 INFO L276 IsEmpty]: Start isEmpty. Operand 8379 states and 38406 transitions. [2020-09-17 01:40:26,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 01:40:26,166 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:26,166 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:40:26,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-09-17 01:40:26,167 INFO L427 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:40:26,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:26,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1149271290, now seen corresponding path program 2 times [2020-09-17 01:40:26,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:26,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776973748] [2020-09-17 01:40:26,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:26,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:26,230 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 01:40:26,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776973748] [2020-09-17 01:40:26,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:40:26,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 01:40:26,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986996916] [2020-09-17 01:40:26,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 01:40:26,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:26,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 01:40:26,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 01:40:26,233 INFO L87 Difference]: Start difference. First operand 8379 states and 38406 transitions. Second operand 7 states. [2020-09-17 01:40:26,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:40:26,553 INFO L93 Difference]: Finished difference Result 19555 states and 78564 transitions. [2020-09-17 01:40:26,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 01:40:26,554 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-17 01:40:26,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:40:26,607 INFO L225 Difference]: With dead ends: 19555 [2020-09-17 01:40:26,608 INFO L226 Difference]: Without dead ends: 19530 [2020-09-17 01:40:26,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-17 01:40:26,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19530 states. [2020-09-17 01:40:26,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19530 to 8317. [2020-09-17 01:40:26,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8317 states. [2020-09-17 01:40:27,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8317 states to 8317 states and 38184 transitions. [2020-09-17 01:40:27,163 INFO L78 Accepts]: Start accepts. Automaton has 8317 states and 38184 transitions. Word has length 19 [2020-09-17 01:40:27,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:40:27,164 INFO L479 AbstractCegarLoop]: Abstraction has 8317 states and 38184 transitions. [2020-09-17 01:40:27,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 01:40:27,164 INFO L276 IsEmpty]: Start isEmpty. Operand 8317 states and 38184 transitions. [2020-09-17 01:40:27,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 01:40:27,165 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:27,165 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:40:27,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-09-17 01:40:27,165 INFO L427 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:40:27,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:27,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1557322431, now seen corresponding path program 1 times [2020-09-17 01:40:27,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:27,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458523051] [2020-09-17 01:40:27,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:27,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:27,240 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 01:40:27,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458523051] [2020-09-17 01:40:27,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646522813] [2020-09-17 01:40:27,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-09-17 01:40:27,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:27,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-17 01:40:27,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:40:27,372 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 01:40:27,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:40:27,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-17 01:40:27,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620219136] [2020-09-17 01:40:27,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 01:40:27,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:27,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 01:40:27,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-17 01:40:27,374 INFO L87 Difference]: Start difference. First operand 8317 states and 38184 transitions. Second operand 11 states. [2020-09-17 01:40:28,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:40:28,168 INFO L93 Difference]: Finished difference Result 26969 states and 101544 transitions. [2020-09-17 01:40:28,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:40:28,169 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-09-17 01:40:28,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:40:28,231 INFO L225 Difference]: With dead ends: 26969 [2020-09-17 01:40:28,231 INFO L226 Difference]: Without dead ends: 26957 [2020-09-17 01:40:28,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-17 01:40:28,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26957 states. [2020-09-17 01:40:28,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26957 to 8204. [2020-09-17 01:40:28,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8204 states. [2020-09-17 01:40:28,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8204 states to 8204 states and 37628 transitions. [2020-09-17 01:40:28,682 INFO L78 Accepts]: Start accepts. Automaton has 8204 states and 37628 transitions. Word has length 21 [2020-09-17 01:40:28,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:40:28,682 INFO L479 AbstractCegarLoop]: Abstraction has 8204 states and 37628 transitions. [2020-09-17 01:40:28,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 01:40:28,683 INFO L276 IsEmpty]: Start isEmpty. Operand 8204 states and 37628 transitions. [2020-09-17 01:40:28,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 01:40:28,684 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:28,684 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:40:28,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 01:40:28,885 INFO L427 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:40:28,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:28,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1862834243, now seen corresponding path program 2 times [2020-09-17 01:40:28,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:28,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61496074] [2020-09-17 01:40:28,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:28,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:28,966 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 01:40:28,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61496074] [2020-09-17 01:40:28,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254238122] [2020-09-17 01:40:28,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-09-17 01:40:29,061 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 01:40:29,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 01:40:29,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-17 01:40:29,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:40:29,084 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 01:40:29,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:40:29,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-17 01:40:29,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804768160] [2020-09-17 01:40:29,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 01:40:29,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:29,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 01:40:29,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-17 01:40:29,086 INFO L87 Difference]: Start difference. First operand 8204 states and 37628 transitions. Second operand 11 states. [2020-09-17 01:40:30,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:40:30,186 INFO L93 Difference]: Finished difference Result 26661 states and 100277 transitions. [2020-09-17 01:40:30,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:40:30,186 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-09-17 01:40:30,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:40:30,288 INFO L225 Difference]: With dead ends: 26661 [2020-09-17 01:40:30,288 INFO L226 Difference]: Without dead ends: 26645 [2020-09-17 01:40:30,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-17 01:40:30,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26645 states. [2020-09-17 01:40:30,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26645 to 8091. [2020-09-17 01:40:30,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8091 states. [2020-09-17 01:40:30,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8091 states to 8091 states and 37076 transitions. [2020-09-17 01:40:30,792 INFO L78 Accepts]: Start accepts. Automaton has 8091 states and 37076 transitions. Word has length 21 [2020-09-17 01:40:30,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:40:30,792 INFO L479 AbstractCegarLoop]: Abstraction has 8091 states and 37076 transitions. [2020-09-17 01:40:30,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 01:40:30,792 INFO L276 IsEmpty]: Start isEmpty. Operand 8091 states and 37076 transitions. [2020-09-17 01:40:30,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 01:40:30,793 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:30,793 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:40:30,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-09-17 01:40:30,994 INFO L427 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:40:30,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:30,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1769991039, now seen corresponding path program 3 times [2020-09-17 01:40:30,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:30,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512501576] [2020-09-17 01:40:30,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:31,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:31,076 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 01:40:31,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512501576] [2020-09-17 01:40:31,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172307291] [2020-09-17 01:40:31,077 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 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 [2020-09-17 01:40:31,173 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-17 01:40:31,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 01:40:31,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-17 01:40:31,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:40:31,206 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 01:40:31,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:40:31,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-17 01:40:31,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419278401] [2020-09-17 01:40:31,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 01:40:31,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:31,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 01:40:31,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-17 01:40:31,208 INFO L87 Difference]: Start difference. First operand 8091 states and 37076 transitions. Second operand 11 states. [2020-09-17 01:40:31,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:40:31,982 INFO L93 Difference]: Finished difference Result 26686 states and 100402 transitions. [2020-09-17 01:40:31,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:40:31,983 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-09-17 01:40:31,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:40:32,048 INFO L225 Difference]: With dead ends: 26686 [2020-09-17 01:40:32,048 INFO L226 Difference]: Without dead ends: 26674 [2020-09-17 01:40:32,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-17 01:40:32,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26674 states. [2020-09-17 01:40:32,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26674 to 7861. [2020-09-17 01:40:32,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7861 states. [2020-09-17 01:40:32,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7861 states to 7861 states and 36066 transitions. [2020-09-17 01:40:32,597 INFO L78 Accepts]: Start accepts. Automaton has 7861 states and 36066 transitions. Word has length 21 [2020-09-17 01:40:32,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:40:32,597 INFO L479 AbstractCegarLoop]: Abstraction has 7861 states and 36066 transitions. [2020-09-17 01:40:32,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 01:40:32,597 INFO L276 IsEmpty]: Start isEmpty. Operand 7861 states and 36066 transitions. [2020-09-17 01:40:32,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 01:40:32,598 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:32,598 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:40:32,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 01:40:32,799 INFO L427 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:40:32,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:32,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1763681919, now seen corresponding path program 4 times [2020-09-17 01:40:32,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:32,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644663974] [2020-09-17 01:40:32,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:32,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:32,876 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 01:40:32,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644663974] [2020-09-17 01:40:32,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503897341] [2020-09-17 01:40:32,877 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 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 [2020-09-17 01:40:32,947 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 01:40:32,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 01:40:32,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-17 01:40:32,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:40:32,988 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 01:40:32,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:40:32,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-17 01:40:32,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567380379] [2020-09-17 01:40:32,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 01:40:32,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:32,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 01:40:32,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-17 01:40:32,994 INFO L87 Difference]: Start difference. First operand 7861 states and 36066 transitions. Second operand 11 states. [2020-09-17 01:40:33,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:40:33,753 INFO L93 Difference]: Finished difference Result 26489 states and 99650 transitions. [2020-09-17 01:40:33,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:40:33,754 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-09-17 01:40:33,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:40:33,839 INFO L225 Difference]: With dead ends: 26489 [2020-09-17 01:40:33,840 INFO L226 Difference]: Without dead ends: 26473 [2020-09-17 01:40:33,841 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-17 01:40:33,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26473 states. [2020-09-17 01:40:34,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26473 to 7748. [2020-09-17 01:40:34,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7748 states. [2020-09-17 01:40:34,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7748 states to 7748 states and 35514 transitions. [2020-09-17 01:40:34,260 INFO L78 Accepts]: Start accepts. Automaton has 7748 states and 35514 transitions. Word has length 21 [2020-09-17 01:40:34,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:40:34,260 INFO L479 AbstractCegarLoop]: Abstraction has 7748 states and 35514 transitions. [2020-09-17 01:40:34,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 01:40:34,260 INFO L276 IsEmpty]: Start isEmpty. Operand 7748 states and 35514 transitions. [2020-09-17 01:40:34,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 01:40:34,261 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:34,261 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:40:34,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-09-17 01:40:34,462 INFO L427 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:40:34,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:34,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1774143127, now seen corresponding path program 1 times [2020-09-17 01:40:34,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:34,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852238471] [2020-09-17 01:40:34,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:34,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:34,510 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 01:40:34,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852238471] [2020-09-17 01:40:34,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:40:34,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 01:40:34,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414407029] [2020-09-17 01:40:34,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 01:40:34,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:34,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 01:40:34,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 01:40:34,513 INFO L87 Difference]: Start difference. First operand 7748 states and 35514 transitions. Second operand 5 states. [2020-09-17 01:40:34,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:40:34,657 INFO L93 Difference]: Finished difference Result 13251 states and 57501 transitions. [2020-09-17 01:40:34,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 01:40:34,657 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-17 01:40:34,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:40:34,688 INFO L225 Difference]: With dead ends: 13251 [2020-09-17 01:40:34,689 INFO L226 Difference]: Without dead ends: 13220 [2020-09-17 01:40:34,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-17 01:40:34,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13220 states. [2020-09-17 01:40:34,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13220 to 9255. [2020-09-17 01:40:34,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9255 states. [2020-09-17 01:40:34,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9255 states to 9255 states and 42368 transitions. [2020-09-17 01:40:34,978 INFO L78 Accepts]: Start accepts. Automaton has 9255 states and 42368 transitions. Word has length 21 [2020-09-17 01:40:34,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:40:34,979 INFO L479 AbstractCegarLoop]: Abstraction has 9255 states and 42368 transitions. [2020-09-17 01:40:34,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 01:40:34,979 INFO L276 IsEmpty]: Start isEmpty. Operand 9255 states and 42368 transitions. [2020-09-17 01:40:34,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 01:40:34,980 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:34,980 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:40:34,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-09-17 01:40:34,981 INFO L427 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:40:34,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:34,981 INFO L82 PathProgramCache]: Analyzing trace with hash -628636285, now seen corresponding path program 5 times [2020-09-17 01:40:34,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:34,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655430361] [2020-09-17 01:40:34,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:34,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:35,068 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 01:40:35,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655430361] [2020-09-17 01:40:35,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:40:35,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 01:40:35,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135234624] [2020-09-17 01:40:35,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 01:40:35,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:35,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 01:40:35,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 01:40:35,071 INFO L87 Difference]: Start difference. First operand 9255 states and 42368 transitions. Second operand 9 states. [2020-09-17 01:40:35,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:40:35,878 INFO L93 Difference]: Finished difference Result 29788 states and 113841 transitions. [2020-09-17 01:40:35,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:40:35,878 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-17 01:40:35,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:40:35,943 INFO L225 Difference]: With dead ends: 29788 [2020-09-17 01:40:35,943 INFO L226 Difference]: Without dead ends: 29770 [2020-09-17 01:40:35,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 01:40:36,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29770 states. [2020-09-17 01:40:36,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29770 to 8964. [2020-09-17 01:40:36,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8964 states. [2020-09-17 01:40:36,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8964 states to 8964 states and 41031 transitions. [2020-09-17 01:40:36,401 INFO L78 Accepts]: Start accepts. Automaton has 8964 states and 41031 transitions. Word has length 21 [2020-09-17 01:40:36,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:40:36,401 INFO L479 AbstractCegarLoop]: Abstraction has 8964 states and 41031 transitions. [2020-09-17 01:40:36,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 01:40:36,401 INFO L276 IsEmpty]: Start isEmpty. Operand 8964 states and 41031 transitions. [2020-09-17 01:40:36,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 01:40:36,403 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:36,403 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:40:36,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-09-17 01:40:36,403 INFO L427 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:40:36,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:36,404 INFO L82 PathProgramCache]: Analyzing trace with hash -643099645, now seen corresponding path program 6 times [2020-09-17 01:40:36,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:36,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335961977] [2020-09-17 01:40:36,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:36,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:36,485 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 01:40:36,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335961977] [2020-09-17 01:40:36,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:40:36,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 01:40:36,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706954097] [2020-09-17 01:40:36,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 01:40:36,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:36,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 01:40:36,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 01:40:36,488 INFO L87 Difference]: Start difference. First operand 8964 states and 41031 transitions. Second operand 9 states. [2020-09-17 01:40:37,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:40:37,314 INFO L93 Difference]: Finished difference Result 29379 states and 112099 transitions. [2020-09-17 01:40:37,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:40:37,314 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-17 01:40:37,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:40:37,377 INFO L225 Difference]: With dead ends: 29379 [2020-09-17 01:40:37,377 INFO L226 Difference]: Without dead ends: 29356 [2020-09-17 01:40:37,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 01:40:37,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29356 states. [2020-09-17 01:40:37,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29356 to 8573. [2020-09-17 01:40:37,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8573 states. [2020-09-17 01:40:37,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8573 states to 8573 states and 39353 transitions. [2020-09-17 01:40:37,999 INFO L78 Accepts]: Start accepts. Automaton has 8573 states and 39353 transitions. Word has length 21 [2020-09-17 01:40:37,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:40:37,999 INFO L479 AbstractCegarLoop]: Abstraction has 8573 states and 39353 transitions. [2020-09-17 01:40:37,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 01:40:37,999 INFO L276 IsEmpty]: Start isEmpty. Operand 8573 states and 39353 transitions. [2020-09-17 01:40:38,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 01:40:38,001 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:38,001 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:40:38,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-09-17 01:40:38,001 INFO L427 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:40:38,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:38,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1599602836, now seen corresponding path program 1 times [2020-09-17 01:40:38,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:38,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501329793] [2020-09-17 01:40:38,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:38,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:38,071 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 01:40:38,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501329793] [2020-09-17 01:40:38,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137323418] [2020-09-17 01:40:38,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 01:40:38,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:38,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-17 01:40:38,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:40:38,198 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 01:40:38,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:40:38,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-17 01:40:38,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144112164] [2020-09-17 01:40:38,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 01:40:38,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:38,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 01:40:38,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-17 01:40:38,200 INFO L87 Difference]: Start difference. First operand 8573 states and 39353 transitions. Second operand 9 states. [2020-09-17 01:40:38,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:40:38,578 INFO L93 Difference]: Finished difference Result 19727 states and 80274 transitions. [2020-09-17 01:40:38,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 01:40:38,581 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-09-17 01:40:38,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:40:38,625 INFO L225 Difference]: With dead ends: 19727 [2020-09-17 01:40:38,625 INFO L226 Difference]: Without dead ends: 19703 [2020-09-17 01:40:38,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-17 01:40:38,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19703 states. [2020-09-17 01:40:38,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19703 to 8847. [2020-09-17 01:40:38,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8847 states. [2020-09-17 01:40:38,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8847 states to 8847 states and 40495 transitions. [2020-09-17 01:40:38,961 INFO L78 Accepts]: Start accepts. Automaton has 8847 states and 40495 transitions. Word has length 23 [2020-09-17 01:40:38,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:40:38,961 INFO L479 AbstractCegarLoop]: Abstraction has 8847 states and 40495 transitions. [2020-09-17 01:40:38,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 01:40:38,961 INFO L276 IsEmpty]: Start isEmpty. Operand 8847 states and 40495 transitions. [2020-09-17 01:40:38,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 01:40:38,964 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:38,964 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:40:39,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-09-17 01:40:39,170 INFO L427 AbstractCegarLoop]: === Iteration 19 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:40:39,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:39,171 INFO L82 PathProgramCache]: Analyzing trace with hash 72758744, now seen corresponding path program 1 times [2020-09-17 01:40:39,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:39,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069404053] [2020-09-17 01:40:39,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:39,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:39,238 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 01:40:39,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069404053] [2020-09-17 01:40:39,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328389218] [2020-09-17 01:40:39,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 01:40:39,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:39,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-17 01:40:39,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:40:39,370 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 01:40:39,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:40:39,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-17 01:40:39,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249464785] [2020-09-17 01:40:39,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 01:40:39,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:39,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 01:40:39,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-17 01:40:39,372 INFO L87 Difference]: Start difference. First operand 8847 states and 40495 transitions. Second operand 9 states. [2020-09-17 01:40:39,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:40:39,746 INFO L93 Difference]: Finished difference Result 20694 states and 84261 transitions. [2020-09-17 01:40:39,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 01:40:39,746 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-09-17 01:40:39,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:40:39,803 INFO L225 Difference]: With dead ends: 20694 [2020-09-17 01:40:39,803 INFO L226 Difference]: Without dead ends: 20666 [2020-09-17 01:40:39,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-17 01:40:39,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20666 states. [2020-09-17 01:40:40,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20666 to 9115. [2020-09-17 01:40:40,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9115 states. [2020-09-17 01:40:40,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9115 states to 9115 states and 41679 transitions. [2020-09-17 01:40:40,180 INFO L78 Accepts]: Start accepts. Automaton has 9115 states and 41679 transitions. Word has length 23 [2020-09-17 01:40:40,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:40:40,181 INFO L479 AbstractCegarLoop]: Abstraction has 9115 states and 41679 transitions. [2020-09-17 01:40:40,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 01:40:40,181 INFO L276 IsEmpty]: Start isEmpty. Operand 9115 states and 41679 transitions. [2020-09-17 01:40:40,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 01:40:40,183 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:40,183 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:40:40,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 01:40:40,384 INFO L427 AbstractCegarLoop]: === Iteration 20 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:40:40,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:40,384 INFO L82 PathProgramCache]: Analyzing trace with hash -328675496, now seen corresponding path program 1 times [2020-09-17 01:40:40,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:40,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189856776] [2020-09-17 01:40:40,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:40,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:40,450 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 01:40:40,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189856776] [2020-09-17 01:40:40,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756338902] [2020-09-17 01:40:40,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-09-17 01:40:40,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:40,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-17 01:40:40,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:40:40,586 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 01:40:40,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:40:40,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-17 01:40:40,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74815908] [2020-09-17 01:40:40,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 01:40:40,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:40,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 01:40:40,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-17 01:40:40,590 INFO L87 Difference]: Start difference. First operand 9115 states and 41679 transitions. Second operand 9 states. [2020-09-17 01:40:41,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:40:41,094 INFO L93 Difference]: Finished difference Result 21396 states and 87360 transitions. [2020-09-17 01:40:41,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 01:40:41,095 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-09-17 01:40:41,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:40:41,144 INFO L225 Difference]: With dead ends: 21396 [2020-09-17 01:40:41,144 INFO L226 Difference]: Without dead ends: 21359 [2020-09-17 01:40:41,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-17 01:40:41,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21359 states. [2020-09-17 01:40:41,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21359 to 9320. [2020-09-17 01:40:41,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9320 states. [2020-09-17 01:40:41,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9320 states to 9320 states and 42648 transitions. [2020-09-17 01:40:41,502 INFO L78 Accepts]: Start accepts. Automaton has 9320 states and 42648 transitions. Word has length 23 [2020-09-17 01:40:41,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:40:41,503 INFO L479 AbstractCegarLoop]: Abstraction has 9320 states and 42648 transitions. [2020-09-17 01:40:41,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 01:40:41,503 INFO L276 IsEmpty]: Start isEmpty. Operand 9320 states and 42648 transitions. [2020-09-17 01:40:41,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 01:40:41,505 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:41,505 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:40:41,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2020-09-17 01:40:41,706 INFO L427 AbstractCegarLoop]: === Iteration 21 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:40:41,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:41,707 INFO L82 PathProgramCache]: Analyzing trace with hash -150456492, now seen corresponding path program 2 times [2020-09-17 01:40:41,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:41,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898419187] [2020-09-17 01:40:41,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:41,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:41,775 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 01:40:41,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898419187] [2020-09-17 01:40:41,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:40:41,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 01:40:41,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585724403] [2020-09-17 01:40:41,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 01:40:41,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:41,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 01:40:41,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 01:40:41,777 INFO L87 Difference]: Start difference. First operand 9320 states and 42648 transitions. Second operand 7 states. [2020-09-17 01:40:42,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:40:42,118 INFO L93 Difference]: Finished difference Result 21489 states and 87752 transitions. [2020-09-17 01:40:42,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 01:40:42,118 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-17 01:40:42,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:40:42,167 INFO L225 Difference]: With dead ends: 21489 [2020-09-17 01:40:42,167 INFO L226 Difference]: Without dead ends: 21452 [2020-09-17 01:40:42,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-17 01:40:42,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21452 states. [2020-09-17 01:40:42,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21452 to 9401. [2020-09-17 01:40:42,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9401 states. [2020-09-17 01:40:42,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9401 states to 9401 states and 43010 transitions. [2020-09-17 01:40:42,530 INFO L78 Accepts]: Start accepts. Automaton has 9401 states and 43010 transitions. Word has length 23 [2020-09-17 01:40:42,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:40:42,530 INFO L479 AbstractCegarLoop]: Abstraction has 9401 states and 43010 transitions. [2020-09-17 01:40:42,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 01:40:42,530 INFO L276 IsEmpty]: Start isEmpty. Operand 9401 states and 43010 transitions. [2020-09-17 01:40:42,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 01:40:42,533 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:42,533 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:40:42,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-09-17 01:40:42,533 INFO L427 AbstractCegarLoop]: === Iteration 22 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:40:42,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:42,533 INFO L82 PathProgramCache]: Analyzing trace with hash -150471558, now seen corresponding path program 2 times [2020-09-17 01:40:42,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:42,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594274120] [2020-09-17 01:40:42,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:42,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:42,593 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 01:40:42,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594274120] [2020-09-17 01:40:42,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:40:42,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 01:40:42,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756636720] [2020-09-17 01:40:42,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 01:40:42,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:42,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 01:40:42,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 01:40:42,596 INFO L87 Difference]: Start difference. First operand 9401 states and 43010 transitions. Second operand 7 states. [2020-09-17 01:40:42,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:40:42,964 INFO L93 Difference]: Finished difference Result 21218 states and 86469 transitions. [2020-09-17 01:40:42,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 01:40:42,965 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-17 01:40:42,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:40:43,035 INFO L225 Difference]: With dead ends: 21218 [2020-09-17 01:40:43,036 INFO L226 Difference]: Without dead ends: 21181 [2020-09-17 01:40:43,037 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-17 01:40:43,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21181 states. [2020-09-17 01:40:43,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21181 to 9396. [2020-09-17 01:40:43,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9396 states. [2020-09-17 01:40:43,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9396 states to 9396 states and 42985 transitions. [2020-09-17 01:40:43,423 INFO L78 Accepts]: Start accepts. Automaton has 9396 states and 42985 transitions. Word has length 23 [2020-09-17 01:40:43,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:40:43,423 INFO L479 AbstractCegarLoop]: Abstraction has 9396 states and 42985 transitions. [2020-09-17 01:40:43,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 01:40:43,424 INFO L276 IsEmpty]: Start isEmpty. Operand 9396 states and 42985 transitions. [2020-09-17 01:40:43,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 01:40:43,426 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:43,426 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:40:43,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-09-17 01:40:43,426 INFO L427 AbstractCegarLoop]: === Iteration 23 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:40:43,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:43,426 INFO L82 PathProgramCache]: Analyzing trace with hash -150449920, now seen corresponding path program 2 times [2020-09-17 01:40:43,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:43,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014488489] [2020-09-17 01:40:43,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:43,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:43,503 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 01:40:43,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014488489] [2020-09-17 01:40:43,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:40:43,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 01:40:43,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611995747] [2020-09-17 01:40:43,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 01:40:43,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:43,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 01:40:43,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 01:40:43,505 INFO L87 Difference]: Start difference. First operand 9396 states and 42985 transitions. Second operand 7 states. [2020-09-17 01:40:43,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:40:43,919 INFO L93 Difference]: Finished difference Result 21047 states and 85702 transitions. [2020-09-17 01:40:43,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 01:40:43,920 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-17 01:40:43,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:40:43,968 INFO L225 Difference]: With dead ends: 21047 [2020-09-17 01:40:43,968 INFO L226 Difference]: Without dead ends: 21010 [2020-09-17 01:40:43,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-17 01:40:44,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21010 states. [2020-09-17 01:40:44,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21010 to 9426. [2020-09-17 01:40:44,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9426 states. [2020-09-17 01:40:44,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9426 states to 9426 states and 43057 transitions. [2020-09-17 01:40:44,322 INFO L78 Accepts]: Start accepts. Automaton has 9426 states and 43057 transitions. Word has length 23 [2020-09-17 01:40:44,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:40:44,322 INFO L479 AbstractCegarLoop]: Abstraction has 9426 states and 43057 transitions. [2020-09-17 01:40:44,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 01:40:44,322 INFO L276 IsEmpty]: Start isEmpty. Operand 9426 states and 43057 transitions. [2020-09-17 01:40:44,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 01:40:44,325 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:44,326 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:40:44,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-09-17 01:40:44,326 INFO L427 AbstractCegarLoop]: === Iteration 24 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:40:44,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:44,326 INFO L82 PathProgramCache]: Analyzing trace with hash -156736363, now seen corresponding path program 1 times [2020-09-17 01:40:44,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:44,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179349276] [2020-09-17 01:40:44,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:44,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:44,415 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 01:40:44,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179349276] [2020-09-17 01:40:44,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063660209] [2020-09-17 01:40:44,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-09-17 01:40:44,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:44,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-17 01:40:44,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:40:44,551 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 01:40:44,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:40:44,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-17 01:40:44,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274049613] [2020-09-17 01:40:44,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 01:40:44,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:44,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 01:40:44,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-17 01:40:44,553 INFO L87 Difference]: Start difference. First operand 9426 states and 43057 transitions. Second operand 11 states. [2020-09-17 01:40:45,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:40:45,459 INFO L93 Difference]: Finished difference Result 30145 states and 115754 transitions. [2020-09-17 01:40:45,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:40:45,459 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-17 01:40:45,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:40:45,540 INFO L225 Difference]: With dead ends: 30145 [2020-09-17 01:40:45,541 INFO L226 Difference]: Without dead ends: 30125 [2020-09-17 01:40:45,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-17 01:40:45,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30125 states. [2020-09-17 01:40:46,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30125 to 9338. [2020-09-17 01:40:46,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9338 states. [2020-09-17 01:40:46,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9338 states to 9338 states and 42582 transitions. [2020-09-17 01:40:46,034 INFO L78 Accepts]: Start accepts. Automaton has 9338 states and 42582 transitions. Word has length 25 [2020-09-17 01:40:46,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:40:46,035 INFO L479 AbstractCegarLoop]: Abstraction has 9338 states and 42582 transitions. [2020-09-17 01:40:46,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 01:40:46,035 INFO L276 IsEmpty]: Start isEmpty. Operand 9338 states and 42582 transitions. [2020-09-17 01:40:46,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 01:40:46,038 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:46,038 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:40:46,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-09-17 01:40:46,239 INFO L427 AbstractCegarLoop]: === Iteration 25 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:40:46,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:46,240 INFO L82 PathProgramCache]: Analyzing trace with hash -558170603, now seen corresponding path program 1 times [2020-09-17 01:40:46,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:46,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834853208] [2020-09-17 01:40:46,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:46,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:46,327 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 01:40:46,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834853208] [2020-09-17 01:40:46,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430916611] [2020-09-17 01:40:46,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-09-17 01:40:46,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:46,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-17 01:40:46,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:40:46,454 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 01:40:46,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:40:46,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-17 01:40:46,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738400978] [2020-09-17 01:40:46,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 01:40:46,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:46,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 01:40:46,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-17 01:40:46,456 INFO L87 Difference]: Start difference. First operand 9338 states and 42582 transitions. Second operand 11 states. [2020-09-17 01:40:47,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:40:47,263 INFO L93 Difference]: Finished difference Result 29696 states and 113916 transitions. [2020-09-17 01:40:47,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:40:47,264 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-17 01:40:47,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:40:47,343 INFO L225 Difference]: With dead ends: 29696 [2020-09-17 01:40:47,344 INFO L226 Difference]: Without dead ends: 29676 [2020-09-17 01:40:47,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-17 01:40:47,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29676 states. [2020-09-17 01:40:47,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29676 to 9291. [2020-09-17 01:40:47,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9291 states. [2020-09-17 01:40:47,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9291 states to 9291 states and 42295 transitions. [2020-09-17 01:40:47,929 INFO L78 Accepts]: Start accepts. Automaton has 9291 states and 42295 transitions. Word has length 25 [2020-09-17 01:40:47,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:40:47,930 INFO L479 AbstractCegarLoop]: Abstraction has 9291 states and 42295 transitions. [2020-09-17 01:40:47,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 01:40:47,930 INFO L276 IsEmpty]: Start isEmpty. Operand 9291 states and 42295 transitions. [2020-09-17 01:40:47,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 01:40:47,933 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:47,933 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:40:48,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-09-17 01:40:48,134 INFO L427 AbstractCegarLoop]: === Iteration 26 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:40:48,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:48,135 INFO L82 PathProgramCache]: Analyzing trace with hash -379966665, now seen corresponding path program 2 times [2020-09-17 01:40:48,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:48,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694234500] [2020-09-17 01:40:48,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:48,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:48,214 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 01:40:48,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694234500] [2020-09-17 01:40:48,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815135568] [2020-09-17 01:40:48,215 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 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 [2020-09-17 01:40:48,309 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 01:40:48,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 01:40:48,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-17 01:40:48,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:40:48,336 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 01:40:48,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:40:48,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-17 01:40:48,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919499477] [2020-09-17 01:40:48,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 01:40:48,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:48,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 01:40:48,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-17 01:40:48,337 INFO L87 Difference]: Start difference. First operand 9291 states and 42295 transitions. Second operand 11 states. [2020-09-17 01:40:49,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:40:49,165 INFO L93 Difference]: Finished difference Result 29267 states and 112142 transitions. [2020-09-17 01:40:49,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:40:49,166 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-17 01:40:49,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:40:49,237 INFO L225 Difference]: With dead ends: 29267 [2020-09-17 01:40:49,238 INFO L226 Difference]: Without dead ends: 29245 [2020-09-17 01:40:49,238 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-17 01:40:49,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29245 states. [2020-09-17 01:40:49,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29245 to 9288. [2020-09-17 01:40:49,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9288 states. [2020-09-17 01:40:49,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9288 states to 9288 states and 42242 transitions. [2020-09-17 01:40:49,680 INFO L78 Accepts]: Start accepts. Automaton has 9288 states and 42242 transitions. Word has length 25 [2020-09-17 01:40:49,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:40:49,680 INFO L479 AbstractCegarLoop]: Abstraction has 9288 states and 42242 transitions. [2020-09-17 01:40:49,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 01:40:49,680 INFO L276 IsEmpty]: Start isEmpty. Operand 9288 states and 42242 transitions. [2020-09-17 01:40:49,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 01:40:49,683 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:49,684 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:40:49,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-09-17 01:40:49,890 INFO L427 AbstractCegarLoop]: === Iteration 27 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:40:49,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:49,891 INFO L82 PathProgramCache]: Analyzing trace with hash -379945027, now seen corresponding path program 2 times [2020-09-17 01:40:49,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:49,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609551305] [2020-09-17 01:40:49,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:49,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:49,970 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 01:40:49,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609551305] [2020-09-17 01:40:49,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187108421] [2020-09-17 01:40:49,971 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-09-17 01:40:50,061 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 01:40:50,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 01:40:50,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-17 01:40:50,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:40:50,091 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 01:40:50,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:40:50,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-17 01:40:50,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664653811] [2020-09-17 01:40:50,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 01:40:50,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:50,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 01:40:50,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-17 01:40:50,093 INFO L87 Difference]: Start difference. First operand 9288 states and 42242 transitions. Second operand 11 states. [2020-09-17 01:40:50,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:40:50,923 INFO L93 Difference]: Finished difference Result 28920 states and 110796 transitions. [2020-09-17 01:40:50,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:40:50,924 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-17 01:40:50,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:40:50,988 INFO L225 Difference]: With dead ends: 28920 [2020-09-17 01:40:50,988 INFO L226 Difference]: Without dead ends: 28898 [2020-09-17 01:40:50,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-17 01:40:51,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28898 states. [2020-09-17 01:40:51,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28898 to 9176. [2020-09-17 01:40:51,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9176 states. [2020-09-17 01:40:51,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9176 states to 9176 states and 41695 transitions. [2020-09-17 01:40:51,656 INFO L78 Accepts]: Start accepts. Automaton has 9176 states and 41695 transitions. Word has length 25 [2020-09-17 01:40:51,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:40:51,656 INFO L479 AbstractCegarLoop]: Abstraction has 9176 states and 41695 transitions. [2020-09-17 01:40:51,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 01:40:51,656 INFO L276 IsEmpty]: Start isEmpty. Operand 9176 states and 41695 transitions. [2020-09-17 01:40:51,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 01:40:51,660 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:51,660 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:40:51,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 01:40:51,861 INFO L427 AbstractCegarLoop]: === Iteration 28 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:40:51,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:51,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1211690581, now seen corresponding path program 3 times [2020-09-17 01:40:51,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:51,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853198670] [2020-09-17 01:40:51,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:51,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:51,950 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 01:40:51,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853198670] [2020-09-17 01:40:51,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553165275] [2020-09-17 01:40:51,951 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 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 [2020-09-17 01:40:52,058 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-09-17 01:40:52,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 01:40:52,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-17 01:40:52,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:40:52,084 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 01:40:52,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:40:52,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-17 01:40:52,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878564320] [2020-09-17 01:40:52,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 01:40:52,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:52,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 01:40:52,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-17 01:40:52,086 INFO L87 Difference]: Start difference. First operand 9176 states and 41695 transitions. Second operand 11 states. [2020-09-17 01:40:52,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:40:52,916 INFO L93 Difference]: Finished difference Result 29038 states and 111216 transitions. [2020-09-17 01:40:52,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:40:52,916 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-17 01:40:52,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:40:52,986 INFO L225 Difference]: With dead ends: 29038 [2020-09-17 01:40:52,987 INFO L226 Difference]: Without dead ends: 29018 [2020-09-17 01:40:52,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-17 01:40:53,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29018 states. [2020-09-17 01:40:53,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29018 to 9000. [2020-09-17 01:40:53,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9000 states. [2020-09-17 01:40:53,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9000 states to 9000 states and 40897 transitions. [2020-09-17 01:40:53,428 INFO L78 Accepts]: Start accepts. Automaton has 9000 states and 40897 transitions. Word has length 25 [2020-09-17 01:40:53,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:40:53,429 INFO L479 AbstractCegarLoop]: Abstraction has 9000 states and 40897 transitions. [2020-09-17 01:40:53,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 01:40:53,429 INFO L276 IsEmpty]: Start isEmpty. Operand 9000 states and 40897 transitions. [2020-09-17 01:40:53,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 01:40:53,432 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:53,432 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:40:53,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-09-17 01:40:53,633 INFO L427 AbstractCegarLoop]: === Iteration 29 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:40:53,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:53,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1201691221, now seen corresponding path program 4 times [2020-09-17 01:40:53,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:53,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850457364] [2020-09-17 01:40:53,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:53,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:53,716 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 01:40:53,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850457364] [2020-09-17 01:40:53,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414092097] [2020-09-17 01:40:53,717 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 01:40:53,822 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 01:40:53,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 01:40:53,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-17 01:40:53,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:40:53,847 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 01:40:53,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:40:53,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-17 01:40:53,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547510968] [2020-09-17 01:40:53,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 01:40:53,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:53,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 01:40:53,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-17 01:40:53,849 INFO L87 Difference]: Start difference. First operand 9000 states and 40897 transitions. Second operand 11 states. [2020-09-17 01:40:54,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:40:54,756 INFO L93 Difference]: Finished difference Result 29283 states and 112236 transitions. [2020-09-17 01:40:54,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:40:54,757 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-17 01:40:54,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:40:54,821 INFO L225 Difference]: With dead ends: 29283 [2020-09-17 01:40:54,821 INFO L226 Difference]: Without dead ends: 29261 [2020-09-17 01:40:54,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-17 01:40:54,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29261 states. [2020-09-17 01:40:55,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29261 to 8997. [2020-09-17 01:40:55,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8997 states. [2020-09-17 01:40:55,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8997 states to 8997 states and 40842 transitions. [2020-09-17 01:40:55,264 INFO L78 Accepts]: Start accepts. Automaton has 8997 states and 40842 transitions. Word has length 25 [2020-09-17 01:40:55,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:40:55,264 INFO L479 AbstractCegarLoop]: Abstraction has 8997 states and 40842 transitions. [2020-09-17 01:40:55,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 01:40:55,265 INFO L276 IsEmpty]: Start isEmpty. Operand 8997 states and 40842 transitions. [2020-09-17 01:40:55,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 01:40:55,268 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:55,268 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:40:55,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 01:40:55,469 INFO L427 AbstractCegarLoop]: === Iteration 30 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:40:55,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:55,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1201697793, now seen corresponding path program 1 times [2020-09-17 01:40:55,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:55,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137551925] [2020-09-17 01:40:55,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:55,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:55,546 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 01:40:55,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137551925] [2020-09-17 01:40:55,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709694311] [2020-09-17 01:40:55,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-09-17 01:40:55,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:55,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-17 01:40:55,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:40:55,688 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 01:40:55,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:40:55,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-17 01:40:55,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229179154] [2020-09-17 01:40:55,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 01:40:55,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:55,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 01:40:55,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-17 01:40:55,690 INFO L87 Difference]: Start difference. First operand 8997 states and 40842 transitions. Second operand 11 states. [2020-09-17 01:40:56,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:40:56,641 INFO L93 Difference]: Finished difference Result 29105 states and 111801 transitions. [2020-09-17 01:40:56,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:40:56,642 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-17 01:40:56,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:40:56,713 INFO L225 Difference]: With dead ends: 29105 [2020-09-17 01:40:56,713 INFO L226 Difference]: Without dead ends: 29085 [2020-09-17 01:40:56,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-17 01:40:56,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29085 states. [2020-09-17 01:40:57,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29085 to 8955. [2020-09-17 01:40:57,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8955 states. [2020-09-17 01:40:57,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8955 states to 8955 states and 40593 transitions. [2020-09-17 01:40:57,145 INFO L78 Accepts]: Start accepts. Automaton has 8955 states and 40593 transitions. Word has length 25 [2020-09-17 01:40:57,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:40:57,145 INFO L479 AbstractCegarLoop]: Abstraction has 8955 states and 40593 transitions. [2020-09-17 01:40:57,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 01:40:57,145 INFO L276 IsEmpty]: Start isEmpty. Operand 8955 states and 40593 transitions. [2020-09-17 01:40:57,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 01:40:57,149 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:57,149 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:40:57,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2020-09-17 01:40:57,350 INFO L427 AbstractCegarLoop]: === Iteration 31 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:40:57,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:57,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1218006273, now seen corresponding path program 2 times [2020-09-17 01:40:57,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:57,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889292265] [2020-09-17 01:40:57,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:57,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:57,445 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 01:40:57,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889292265] [2020-09-17 01:40:57,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41826083] [2020-09-17 01:40:57,446 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 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 [2020-09-17 01:40:57,553 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 01:40:57,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 01:40:57,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-17 01:40:57,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:40:57,588 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 01:40:57,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:40:57,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-17 01:40:57,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873018145] [2020-09-17 01:40:57,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 01:40:57,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:57,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 01:40:57,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-17 01:40:57,590 INFO L87 Difference]: Start difference. First operand 8955 states and 40593 transitions. Second operand 11 states. [2020-09-17 01:40:58,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:40:58,467 INFO L93 Difference]: Finished difference Result 28806 states and 110558 transitions. [2020-09-17 01:40:58,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:40:58,468 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-17 01:40:58,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:40:58,538 INFO L225 Difference]: With dead ends: 28806 [2020-09-17 01:40:58,538 INFO L226 Difference]: Without dead ends: 28779 [2020-09-17 01:40:58,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-17 01:40:58,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28779 states. [2020-09-17 01:40:58,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28779 to 8841. [2020-09-17 01:40:58,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8841 states. [2020-09-17 01:40:58,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8841 states to 8841 states and 40062 transitions. [2020-09-17 01:40:58,981 INFO L78 Accepts]: Start accepts. Automaton has 8841 states and 40062 transitions. Word has length 25 [2020-09-17 01:40:58,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:40:58,981 INFO L479 AbstractCegarLoop]: Abstraction has 8841 states and 40062 transitions. [2020-09-17 01:40:58,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 01:40:58,981 INFO L276 IsEmpty]: Start isEmpty. Operand 8841 states and 40062 transitions. [2020-09-17 01:40:58,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 01:40:58,986 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:40:58,986 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:40:59,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 01:40:59,187 INFO L427 AbstractCegarLoop]: === Iteration 32 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:40:59,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:40:59,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1980442581, now seen corresponding path program 3 times [2020-09-17 01:40:59,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:40:59,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118303079] [2020-09-17 01:40:59,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:40:59,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:40:59,290 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 01:40:59,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118303079] [2020-09-17 01:40:59,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480387803] [2020-09-17 01:40:59,291 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 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 [2020-09-17 01:40:59,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-17 01:40:59,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 01:40:59,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-17 01:40:59,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:40:59,423 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 01:40:59,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:40:59,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-17 01:40:59,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923737354] [2020-09-17 01:40:59,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 01:40:59,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:40:59,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 01:40:59,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-17 01:40:59,424 INFO L87 Difference]: Start difference. First operand 8841 states and 40062 transitions. Second operand 11 states. [2020-09-17 01:41:00,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:41:00,342 INFO L93 Difference]: Finished difference Result 28636 states and 109852 transitions. [2020-09-17 01:41:00,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:41:00,343 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-17 01:41:00,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:41:00,418 INFO L225 Difference]: With dead ends: 28636 [2020-09-17 01:41:00,418 INFO L226 Difference]: Without dead ends: 28616 [2020-09-17 01:41:00,418 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-17 01:41:00,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28616 states. [2020-09-17 01:41:00,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28616 to 8702. [2020-09-17 01:41:00,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8702 states. [2020-09-17 01:41:01,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8702 states to 8702 states and 39438 transitions. [2020-09-17 01:41:01,142 INFO L78 Accepts]: Start accepts. Automaton has 8702 states and 39438 transitions. Word has length 25 [2020-09-17 01:41:01,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:41:01,143 INFO L479 AbstractCegarLoop]: Abstraction has 8702 states and 39438 transitions. [2020-09-17 01:41:01,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 01:41:01,143 INFO L276 IsEmpty]: Start isEmpty. Operand 8702 states and 39438 transitions. [2020-09-17 01:41:01,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 01:41:01,147 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:41:01,147 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:41:01,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2020-09-17 01:41:01,360 INFO L427 AbstractCegarLoop]: === Iteration 33 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:41:01,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:41:01,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1965964155, now seen corresponding path program 3 times [2020-09-17 01:41:01,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:41:01,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590796609] [2020-09-17 01:41:01,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:41:01,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:41:01,439 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 01:41:01,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590796609] [2020-09-17 01:41:01,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570202742] [2020-09-17 01:41:01,440 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 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 [2020-09-17 01:41:01,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-17 01:41:01,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 01:41:01,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-17 01:41:01,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:41:01,576 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 01:41:01,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:41:01,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-17 01:41:01,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597542994] [2020-09-17 01:41:01,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 01:41:01,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:41:01,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 01:41:01,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-17 01:41:01,578 INFO L87 Difference]: Start difference. First operand 8702 states and 39438 transitions. Second operand 11 states. [2020-09-17 01:41:02,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:41:02,421 INFO L93 Difference]: Finished difference Result 28297 states and 108461 transitions. [2020-09-17 01:41:02,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:41:02,421 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-17 01:41:02,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:41:02,498 INFO L225 Difference]: With dead ends: 28297 [2020-09-17 01:41:02,498 INFO L226 Difference]: Without dead ends: 28277 [2020-09-17 01:41:02,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-17 01:41:02,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28277 states. [2020-09-17 01:41:02,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28277 to 8596. [2020-09-17 01:41:02,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8596 states. [2020-09-17 01:41:02,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8596 states to 8596 states and 38978 transitions. [2020-09-17 01:41:02,930 INFO L78 Accepts]: Start accepts. Automaton has 8596 states and 38978 transitions. Word has length 25 [2020-09-17 01:41:02,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:41:02,931 INFO L479 AbstractCegarLoop]: Abstraction has 8596 states and 38978 transitions. [2020-09-17 01:41:02,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 01:41:02,931 INFO L276 IsEmpty]: Start isEmpty. Operand 8596 states and 38978 transitions. [2020-09-17 01:41:02,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 01:41:02,934 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:41:02,934 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:41:03,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 01:41:03,135 INFO L427 AbstractCegarLoop]: === Iteration 34 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:41:03,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:41:03,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1970443221, now seen corresponding path program 4 times [2020-09-17 01:41:03,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:41:03,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127729021] [2020-09-17 01:41:03,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:41:03,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:41:03,228 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 01:41:03,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127729021] [2020-09-17 01:41:03,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995707628] [2020-09-17 01:41:03,229 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 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 [2020-09-17 01:41:03,336 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 01:41:03,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 01:41:03,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-17 01:41:03,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:41:03,362 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 01:41:03,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:41:03,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-17 01:41:03,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790390247] [2020-09-17 01:41:03,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 01:41:03,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:41:03,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 01:41:03,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-17 01:41:03,364 INFO L87 Difference]: Start difference. First operand 8596 states and 38978 transitions. Second operand 11 states. [2020-09-17 01:41:04,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:41:04,208 INFO L93 Difference]: Finished difference Result 28565 states and 109596 transitions. [2020-09-17 01:41:04,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:41:04,208 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-17 01:41:04,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:41:04,274 INFO L225 Difference]: With dead ends: 28565 [2020-09-17 01:41:04,274 INFO L226 Difference]: Without dead ends: 28538 [2020-09-17 01:41:04,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-17 01:41:04,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28538 states. [2020-09-17 01:41:04,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28538 to 8563. [2020-09-17 01:41:04,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8563 states. [2020-09-17 01:41:04,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8563 states to 8563 states and 38809 transitions. [2020-09-17 01:41:04,692 INFO L78 Accepts]: Start accepts. Automaton has 8563 states and 38809 transitions. Word has length 25 [2020-09-17 01:41:04,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:41:04,692 INFO L479 AbstractCegarLoop]: Abstraction has 8563 states and 38809 transitions. [2020-09-17 01:41:04,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 01:41:04,693 INFO L276 IsEmpty]: Start isEmpty. Operand 8563 states and 38809 transitions. [2020-09-17 01:41:04,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 01:41:04,696 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:41:04,696 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:41:04,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2020-09-17 01:41:04,902 INFO L427 AbstractCegarLoop]: === Iteration 35 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:41:04,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:41:04,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1970428155, now seen corresponding path program 4 times [2020-09-17 01:41:04,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:41:04,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134587742] [2020-09-17 01:41:04,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:41:04,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:41:04,994 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 01:41:04,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134587742] [2020-09-17 01:41:04,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712367380] [2020-09-17 01:41:04,995 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 [2020-09-17 01:41:05,098 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 01:41:05,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 01:41:05,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-17 01:41:05,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:41:05,133 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 01:41:05,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:41:05,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-17 01:41:05,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042379269] [2020-09-17 01:41:05,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 01:41:05,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:41:05,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 01:41:05,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-17 01:41:05,135 INFO L87 Difference]: Start difference. First operand 8563 states and 38809 transitions. Second operand 11 states. [2020-09-17 01:41:06,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:41:06,007 INFO L93 Difference]: Finished difference Result 28213 states and 108237 transitions. [2020-09-17 01:41:06,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:41:06,008 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-17 01:41:06,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:41:06,071 INFO L225 Difference]: With dead ends: 28213 [2020-09-17 01:41:06,071 INFO L226 Difference]: Without dead ends: 28186 [2020-09-17 01:41:06,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-17 01:41:06,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28186 states. [2020-09-17 01:41:06,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28186 to 8421. [2020-09-17 01:41:06,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8421 states. [2020-09-17 01:41:06,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8421 states to 8421 states and 38146 transitions. [2020-09-17 01:41:06,696 INFO L78 Accepts]: Start accepts. Automaton has 8421 states and 38146 transitions. Word has length 25 [2020-09-17 01:41:06,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:41:06,696 INFO L479 AbstractCegarLoop]: Abstraction has 8421 states and 38146 transitions. [2020-09-17 01:41:06,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 01:41:06,697 INFO L276 IsEmpty]: Start isEmpty. Operand 8421 states and 38146 transitions. [2020-09-17 01:41:06,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 01:41:06,700 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:41:06,700 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:41:06,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 01:41:06,901 INFO L427 AbstractCegarLoop]: === Iteration 36 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:41:06,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:41:06,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1943046054, now seen corresponding path program 1 times [2020-09-17 01:41:06,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:41:06,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918430311] [2020-09-17 01:41:06,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:41:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:41:06,954 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-17 01:41:06,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918430311] [2020-09-17 01:41:06,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:41:06,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 01:41:06,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794488839] [2020-09-17 01:41:06,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 01:41:06,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:41:06,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 01:41:06,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 01:41:06,956 INFO L87 Difference]: Start difference. First operand 8421 states and 38146 transitions. Second operand 5 states. [2020-09-17 01:41:07,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:41:07,184 INFO L93 Difference]: Finished difference Result 13647 states and 59401 transitions. [2020-09-17 01:41:07,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 01:41:07,185 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-09-17 01:41:07,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:41:07,246 INFO L225 Difference]: With dead ends: 13647 [2020-09-17 01:41:07,246 INFO L226 Difference]: Without dead ends: 13615 [2020-09-17 01:41:07,247 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-17 01:41:07,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13615 states. [2020-09-17 01:41:07,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13615 to 9928. [2020-09-17 01:41:07,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9928 states. [2020-09-17 01:41:07,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9928 states to 9928 states and 44651 transitions. [2020-09-17 01:41:07,735 INFO L78 Accepts]: Start accepts. Automaton has 9928 states and 44651 transitions. Word has length 25 [2020-09-17 01:41:07,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:41:07,736 INFO L479 AbstractCegarLoop]: Abstraction has 9928 states and 44651 transitions. [2020-09-17 01:41:07,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 01:41:07,736 INFO L276 IsEmpty]: Start isEmpty. Operand 9928 states and 44651 transitions. [2020-09-17 01:41:07,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 01:41:07,741 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:41:07,741 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:41:07,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-09-17 01:41:07,742 INFO L427 AbstractCegarLoop]: === Iteration 37 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:41:07,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:41:07,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1440199159, now seen corresponding path program 5 times [2020-09-17 01:41:07,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:41:07,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219625854] [2020-09-17 01:41:07,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:41:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:41:07,824 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 01:41:07,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219625854] [2020-09-17 01:41:07,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:41:07,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 01:41:07,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316839987] [2020-09-17 01:41:07,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 01:41:07,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:41:07,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 01:41:07,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 01:41:07,826 INFO L87 Difference]: Start difference. First operand 9928 states and 44651 transitions. Second operand 9 states. [2020-09-17 01:41:08,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:41:08,608 INFO L93 Difference]: Finished difference Result 31816 states and 123346 transitions. [2020-09-17 01:41:08,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:41:08,608 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 01:41:08,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:41:08,684 INFO L225 Difference]: With dead ends: 31816 [2020-09-17 01:41:08,685 INFO L226 Difference]: Without dead ends: 31790 [2020-09-17 01:41:08,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 01:41:08,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31790 states. [2020-09-17 01:41:09,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31790 to 9766. [2020-09-17 01:41:09,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9766 states. [2020-09-17 01:41:09,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9766 states to 9766 states and 43873 transitions. [2020-09-17 01:41:09,161 INFO L78 Accepts]: Start accepts. Automaton has 9766 states and 43873 transitions. Word has length 25 [2020-09-17 01:41:09,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:41:09,161 INFO L479 AbstractCegarLoop]: Abstraction has 9766 states and 43873 transitions. [2020-09-17 01:41:09,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 01:41:09,161 INFO L276 IsEmpty]: Start isEmpty. Operand 9766 states and 43873 transitions. [2020-09-17 01:41:09,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 01:41:09,164 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:41:09,164 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:41:09,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-09-17 01:41:09,164 INFO L427 AbstractCegarLoop]: === Iteration 38 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:41:09,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:41:09,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1440220797, now seen corresponding path program 5 times [2020-09-17 01:41:09,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:41:09,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517429143] [2020-09-17 01:41:09,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:41:09,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:41:09,251 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 01:41:09,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517429143] [2020-09-17 01:41:09,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:41:09,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 01:41:09,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049106090] [2020-09-17 01:41:09,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 01:41:09,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:41:09,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 01:41:09,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 01:41:09,253 INFO L87 Difference]: Start difference. First operand 9766 states and 43873 transitions. Second operand 9 states. [2020-09-17 01:41:10,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:41:10,056 INFO L93 Difference]: Finished difference Result 31277 states and 121098 transitions. [2020-09-17 01:41:10,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:41:10,056 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 01:41:10,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:41:10,131 INFO L225 Difference]: With dead ends: 31277 [2020-09-17 01:41:10,132 INFO L226 Difference]: Without dead ends: 31251 [2020-09-17 01:41:10,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 01:41:10,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31251 states. [2020-09-17 01:41:10,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31251 to 9592. [2020-09-17 01:41:10,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9592 states. [2020-09-17 01:41:10,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9592 states to 9592 states and 43051 transitions. [2020-09-17 01:41:10,594 INFO L78 Accepts]: Start accepts. Automaton has 9592 states and 43051 transitions. Word has length 25 [2020-09-17 01:41:10,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:41:10,595 INFO L479 AbstractCegarLoop]: Abstraction has 9592 states and 43051 transitions. [2020-09-17 01:41:10,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 01:41:10,595 INFO L276 IsEmpty]: Start isEmpty. Operand 9592 states and 43051 transitions. [2020-09-17 01:41:10,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 01:41:10,598 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:41:10,598 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:41:10,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-09-17 01:41:10,598 INFO L427 AbstractCegarLoop]: === Iteration 39 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:41:10,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:41:10,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1425735799, now seen corresponding path program 6 times [2020-09-17 01:41:10,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:41:10,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091651815] [2020-09-17 01:41:10,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:41:10,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:41:10,681 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 01:41:10,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091651815] [2020-09-17 01:41:10,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:41:10,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 01:41:10,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950307414] [2020-09-17 01:41:10,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 01:41:10,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:41:10,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 01:41:10,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 01:41:10,683 INFO L87 Difference]: Start difference. First operand 9592 states and 43051 transitions. Second operand 9 states. [2020-09-17 01:41:11,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:41:11,620 INFO L93 Difference]: Finished difference Result 30952 states and 119650 transitions. [2020-09-17 01:41:11,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:41:11,621 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 01:41:11,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:41:11,751 INFO L225 Difference]: With dead ends: 30952 [2020-09-17 01:41:11,752 INFO L226 Difference]: Without dead ends: 30919 [2020-09-17 01:41:11,752 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 01:41:12,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30919 states. [2020-09-17 01:41:12,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30919 to 9246. [2020-09-17 01:41:12,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9246 states. [2020-09-17 01:41:12,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9246 states to 9246 states and 41509 transitions. [2020-09-17 01:41:12,528 INFO L78 Accepts]: Start accepts. Automaton has 9246 states and 41509 transitions. Word has length 25 [2020-09-17 01:41:12,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:41:12,529 INFO L479 AbstractCegarLoop]: Abstraction has 9246 states and 41509 transitions. [2020-09-17 01:41:12,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 01:41:12,529 INFO L276 IsEmpty]: Start isEmpty. Operand 9246 states and 41509 transitions. [2020-09-17 01:41:12,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 01:41:12,532 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:41:12,532 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:41:12,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-09-17 01:41:12,532 INFO L427 AbstractCegarLoop]: === Iteration 40 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:41:12,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:41:12,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1425742371, now seen corresponding path program 5 times [2020-09-17 01:41:12,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:41:12,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549850084] [2020-09-17 01:41:12,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:41:12,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:41:12,610 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 01:41:12,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549850084] [2020-09-17 01:41:12,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:41:12,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 01:41:12,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083143162] [2020-09-17 01:41:12,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 01:41:12,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:41:12,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 01:41:12,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 01:41:12,612 INFO L87 Difference]: Start difference. First operand 9246 states and 41509 transitions. Second operand 9 states. [2020-09-17 01:41:13,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:41:13,485 INFO L93 Difference]: Finished difference Result 30541 states and 117947 transitions. [2020-09-17 01:41:13,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:41:13,486 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 01:41:13,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:41:13,554 INFO L225 Difference]: With dead ends: 30541 [2020-09-17 01:41:13,554 INFO L226 Difference]: Without dead ends: 30515 [2020-09-17 01:41:13,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 01:41:13,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30515 states. [2020-09-17 01:41:13,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30515 to 9136. [2020-09-17 01:41:13,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9136 states. [2020-09-17 01:41:13,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9136 states to 9136 states and 40999 transitions. [2020-09-17 01:41:13,996 INFO L78 Accepts]: Start accepts. Automaton has 9136 states and 40999 transitions. Word has length 25 [2020-09-17 01:41:13,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:41:13,996 INFO L479 AbstractCegarLoop]: Abstraction has 9136 states and 40999 transitions. [2020-09-17 01:41:13,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 01:41:13,996 INFO L276 IsEmpty]: Start isEmpty. Operand 9136 states and 40999 transitions. [2020-09-17 01:41:13,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 01:41:13,999 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:41:13,999 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:41:13,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-09-17 01:41:13,999 INFO L427 AbstractCegarLoop]: === Iteration 41 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:41:14,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:41:14,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1446529917, now seen corresponding path program 6 times [2020-09-17 01:41:14,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:41:14,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475099662] [2020-09-17 01:41:14,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:41:14,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:41:14,089 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 01:41:14,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475099662] [2020-09-17 01:41:14,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:41:14,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 01:41:14,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109833499] [2020-09-17 01:41:14,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 01:41:14,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:41:14,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 01:41:14,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 01:41:14,090 INFO L87 Difference]: Start difference. First operand 9136 states and 40999 transitions. Second operand 9 states. [2020-09-17 01:41:14,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:41:14,983 INFO L93 Difference]: Finished difference Result 30263 states and 116773 transitions. [2020-09-17 01:41:14,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:41:14,984 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 01:41:14,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:41:15,069 INFO L225 Difference]: With dead ends: 30263 [2020-09-17 01:41:15,070 INFO L226 Difference]: Without dead ends: 30230 [2020-09-17 01:41:15,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 01:41:15,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30230 states. [2020-09-17 01:41:15,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30230 to 8877. [2020-09-17 01:41:15,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8877 states. [2020-09-17 01:41:15,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8877 states to 8877 states and 39872 transitions. [2020-09-17 01:41:15,517 INFO L78 Accepts]: Start accepts. Automaton has 8877 states and 39872 transitions. Word has length 25 [2020-09-17 01:41:15,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:41:15,517 INFO L479 AbstractCegarLoop]: Abstraction has 8877 states and 39872 transitions. [2020-09-17 01:41:15,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 01:41:15,517 INFO L276 IsEmpty]: Start isEmpty. Operand 8877 states and 39872 transitions. [2020-09-17 01:41:15,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 01:41:15,520 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:41:15,520 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:41:15,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-09-17 01:41:15,520 INFO L427 AbstractCegarLoop]: === Iteration 42 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:41:15,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:41:15,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1446514851, now seen corresponding path program 6 times [2020-09-17 01:41:15,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:41:15,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947126727] [2020-09-17 01:41:15,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:41:15,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:41:15,595 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 01:41:15,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947126727] [2020-09-17 01:41:15,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:41:15,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 01:41:15,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670951939] [2020-09-17 01:41:15,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 01:41:15,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:41:15,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 01:41:15,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 01:41:15,597 INFO L87 Difference]: Start difference. First operand 8877 states and 39872 transitions. Second operand 9 states. [2020-09-17 01:41:16,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:41:16,465 INFO L93 Difference]: Finished difference Result 29856 states and 115140 transitions. [2020-09-17 01:41:16,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:41:16,465 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 01:41:16,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:41:16,538 INFO L225 Difference]: With dead ends: 29856 [2020-09-17 01:41:16,539 INFO L226 Difference]: Without dead ends: 29823 [2020-09-17 01:41:16,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 01:41:16,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29823 states. [2020-09-17 01:41:16,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29823 to 8560. [2020-09-17 01:41:16,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8560 states. [2020-09-17 01:41:16,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8560 states to 8560 states and 38495 transitions. [2020-09-17 01:41:16,973 INFO L78 Accepts]: Start accepts. Automaton has 8560 states and 38495 transitions. Word has length 25 [2020-09-17 01:41:16,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:41:16,973 INFO L479 AbstractCegarLoop]: Abstraction has 8560 states and 38495 transitions. [2020-09-17 01:41:16,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 01:41:16,974 INFO L276 IsEmpty]: Start isEmpty. Operand 8560 states and 38495 transitions. [2020-09-17 01:41:16,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-17 01:41:16,977 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:41:16,977 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:41:16,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-09-17 01:41:16,978 INFO L427 AbstractCegarLoop]: === Iteration 43 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:41:16,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:41:16,978 INFO L82 PathProgramCache]: Analyzing trace with hash -110415564, now seen corresponding path program 1 times [2020-09-17 01:41:16,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:41:16,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127270198] [2020-09-17 01:41:16,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:41:16,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 01:41:16,989 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 01:41:17,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 01:41:17,000 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 01:41:17,008 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-17 01:41:17,008 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-17 01:41:17,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-09-17 01:41:17,009 WARN L363 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-17 01:41:17,009 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-09-17 01:41:17,023 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,024 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,024 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,024 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,024 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,024 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,024 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,025 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,025 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,025 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,025 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,025 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,025 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,026 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,026 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,026 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,026 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,026 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,026 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,026 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,026 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,027 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,027 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,027 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,027 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,027 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,027 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,027 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,028 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,028 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,028 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,028 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,028 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,028 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,029 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,029 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,029 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,029 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,029 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,029 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,029 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,029 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,030 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,030 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,030 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,030 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,030 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,030 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,030 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,031 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,031 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,031 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,031 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,031 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,031 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,031 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,032 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,032 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,032 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,032 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,032 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,032 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,088 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,088 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,088 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,088 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,089 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,089 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,089 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,089 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,089 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,089 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,090 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,090 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,090 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,090 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,090 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,090 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,090 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,091 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,091 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,091 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,091 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,091 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,091 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,091 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,092 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,092 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,092 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,092 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,092 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,092 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,092 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,092 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,092 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,093 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,093 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,093 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,093 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,093 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,093 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,093 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,093 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,093 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,093 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,093 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,094 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,094 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,094 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,094 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,094 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,094 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,094 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,094 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,094 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,094 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,094 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,095 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,095 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,095 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,095 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,095 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,095 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,095 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,095 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,095 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,096 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,096 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,096 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,096 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,096 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,097 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,097 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,097 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,098 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,098 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,099 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,099 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,099 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,099 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,099 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,100 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,100 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,100 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,100 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,100 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,101 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,101 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,102 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,102 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,102 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,109 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,109 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,110 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,110 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,110 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,111 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,111 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,112 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,112 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,112 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,112 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,113 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,114 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,114 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,114 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,114 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,114 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,116 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,116 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,116 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,116 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,116 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,116 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,118 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,118 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,118 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,118 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,118 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,118 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,120 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,120 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,120 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,120 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,121 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,121 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,122 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,122 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,122 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,122 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,122 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,123 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:41:17,124 INFO L251 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-09-17 01:41:17,124 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 01:41:17,124 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 01:41:17,124 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-17 01:41:17,124 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-17 01:41:17,125 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 01:41:17,125 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 01:41:17,125 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 01:41:17,125 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 01:41:17,126 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 160 places, 141 transitions, 402 flow [2020-09-17 01:41:17,127 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 160 places, 141 transitions, 402 flow [2020-09-17 01:41:17,145 INFO L129 PetriNetUnfolder]: 8/171 cut-off events. [2020-09-17 01:41:17,145 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-09-17 01:41:17,147 INFO L80 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 171 events. 8/171 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 310 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 206. Up to 14 conditions per place. [2020-09-17 01:41:17,154 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 160 places, 141 transitions, 402 flow [2020-09-17 01:41:17,174 INFO L129 PetriNetUnfolder]: 8/171 cut-off events. [2020-09-17 01:41:17,174 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-09-17 01:41:17,175 INFO L80 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 171 events. 8/171 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 310 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 206. Up to 14 conditions per place. [2020-09-17 01:41:17,181 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 3612 [2020-09-17 01:41:17,181 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-17 01:41:19,404 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-09-17 01:41:19,764 INFO L206 etLargeBlockEncoding]: Checked pairs total: 4226 [2020-09-17 01:41:19,765 INFO L214 etLargeBlockEncoding]: Total number of compositions: 127 [2020-09-17 01:41:19,765 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 45 transitions, 210 flow [2020-09-17 01:41:21,266 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 18584 states. [2020-09-17 01:41:21,266 INFO L276 IsEmpty]: Start isEmpty. Operand 18584 states. [2020-09-17 01:41:21,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-17 01:41:21,266 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:41:21,267 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-17 01:41:21,267 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:41:21,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:41:21,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1291919, now seen corresponding path program 1 times [2020-09-17 01:41:21,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:41:21,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594600647] [2020-09-17 01:41:21,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:41:21,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:41:21,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 01:41:21,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594600647] [2020-09-17 01:41:21,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:41:21,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-17 01:41:21,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107080196] [2020-09-17 01:41:21,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 01:41:21,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:41:21,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 01:41:21,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 01:41:21,284 INFO L87 Difference]: Start difference. First operand 18584 states. Second operand 3 states. [2020-09-17 01:41:21,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:41:21,443 INFO L93 Difference]: Finished difference Result 17885 states and 92755 transitions. [2020-09-17 01:41:21,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 01:41:21,443 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-17 01:41:21,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:41:21,504 INFO L225 Difference]: With dead ends: 17885 [2020-09-17 01:41:21,504 INFO L226 Difference]: Without dead ends: 16791 [2020-09-17 01:41:21,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 01:41:21,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16791 states. [2020-09-17 01:41:22,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16791 to 16791. [2020-09-17 01:41:22,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16791 states. [2020-09-17 01:41:22,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16791 states to 16791 states and 86558 transitions. [2020-09-17 01:41:22,267 INFO L78 Accepts]: Start accepts. Automaton has 16791 states and 86558 transitions. Word has length 3 [2020-09-17 01:41:22,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:41:22,267 INFO L479 AbstractCegarLoop]: Abstraction has 16791 states and 86558 transitions. [2020-09-17 01:41:22,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 01:41:22,267 INFO L276 IsEmpty]: Start isEmpty. Operand 16791 states and 86558 transitions. [2020-09-17 01:41:22,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-17 01:41:22,267 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:41:22,268 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:41:22,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2020-09-17 01:41:22,268 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:41:22,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:41:22,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1124534846, now seen corresponding path program 1 times [2020-09-17 01:41:22,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:41:22,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132519672] [2020-09-17 01:41:22,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:41:22,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:41:22,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 01:41:22,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132519672] [2020-09-17 01:41:22,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:41:22,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 01:41:22,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92175557] [2020-09-17 01:41:22,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 01:41:22,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:41:22,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 01:41:22,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 01:41:22,299 INFO L87 Difference]: Start difference. First operand 16791 states and 86558 transitions. Second operand 5 states. [2020-09-17 01:41:22,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:41:22,542 INFO L93 Difference]: Finished difference Result 30985 states and 150574 transitions. [2020-09-17 01:41:22,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 01:41:22,543 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-17 01:41:22,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:41:22,635 INFO L225 Difference]: With dead ends: 30985 [2020-09-17 01:41:22,635 INFO L226 Difference]: Without dead ends: 30977 [2020-09-17 01:41:22,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-17 01:41:24,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30977 states. [2020-09-17 01:41:25,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30977 to 19868. [2020-09-17 01:41:25,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19868 states. [2020-09-17 01:41:25,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19868 states to 19868 states and 103363 transitions. [2020-09-17 01:41:25,294 INFO L78 Accepts]: Start accepts. Automaton has 19868 states and 103363 transitions. Word has length 9 [2020-09-17 01:41:25,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:41:25,294 INFO L479 AbstractCegarLoop]: Abstraction has 19868 states and 103363 transitions. [2020-09-17 01:41:25,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 01:41:25,294 INFO L276 IsEmpty]: Start isEmpty. Operand 19868 states and 103363 transitions. [2020-09-17 01:41:25,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-17 01:41:25,295 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:41:25,295 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:41:25,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2020-09-17 01:41:25,295 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:41:25,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:41:25,296 INFO L82 PathProgramCache]: Analyzing trace with hash -696216523, now seen corresponding path program 1 times [2020-09-17 01:41:25,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:41:25,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609525266] [2020-09-17 01:41:25,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:41:25,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:41:25,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 01:41:25,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609525266] [2020-09-17 01:41:25,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:41:25,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 01:41:25,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142906075] [2020-09-17 01:41:25,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 01:41:25,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:41:25,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 01:41:25,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 01:41:25,332 INFO L87 Difference]: Start difference. First operand 19868 states and 103363 transitions. Second operand 5 states. [2020-09-17 01:41:25,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:41:25,600 INFO L93 Difference]: Finished difference Result 36296 states and 178836 transitions. [2020-09-17 01:41:25,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 01:41:25,601 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-17 01:41:25,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:41:25,707 INFO L225 Difference]: With dead ends: 36296 [2020-09-17 01:41:25,707 INFO L226 Difference]: Without dead ends: 36280 [2020-09-17 01:41:25,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-17 01:41:26,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36280 states. [2020-09-17 01:41:26,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36280 to 23806. [2020-09-17 01:41:26,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23806 states. [2020-09-17 01:41:26,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23806 states to 23806 states and 125455 transitions. [2020-09-17 01:41:26,908 INFO L78 Accepts]: Start accepts. Automaton has 23806 states and 125455 transitions. Word has length 13 [2020-09-17 01:41:26,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:41:26,908 INFO L479 AbstractCegarLoop]: Abstraction has 23806 states and 125455 transitions. [2020-09-17 01:41:26,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 01:41:26,908 INFO L276 IsEmpty]: Start isEmpty. Operand 23806 states and 125455 transitions. [2020-09-17 01:41:26,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 01:41:26,909 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:41:26,909 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:41:26,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2020-09-17 01:41:26,909 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:41:26,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:41:26,909 INFO L82 PathProgramCache]: Analyzing trace with hash -2123666531, now seen corresponding path program 1 times [2020-09-17 01:41:26,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:41:26,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727763535] [2020-09-17 01:41:26,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:41:26,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:41:26,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 01:41:26,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727763535] [2020-09-17 01:41:26,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93357693] [2020-09-17 01:41:26,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-09-17 01:41:27,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:41:27,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-17 01:41:27,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:41:27,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 01:41:27,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:41:27,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-17 01:41:27,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648880083] [2020-09-17 01:41:27,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 01:41:27,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:41:27,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 01:41:27,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-17 01:41:27,081 INFO L87 Difference]: Start difference. First operand 23806 states and 125455 transitions. Second operand 9 states. [2020-09-17 01:41:27,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:41:27,657 INFO L93 Difference]: Finished difference Result 56720 states and 262685 transitions. [2020-09-17 01:41:27,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 01:41:27,658 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-09-17 01:41:27,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:41:29,915 INFO L225 Difference]: With dead ends: 56720 [2020-09-17 01:41:29,915 INFO L226 Difference]: Without dead ends: 56704 [2020-09-17 01:41:29,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-17 01:41:30,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56704 states. [2020-09-17 01:41:31,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56704 to 23629. [2020-09-17 01:41:31,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23629 states. [2020-09-17 01:41:31,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23629 states to 23629 states and 124418 transitions. [2020-09-17 01:41:31,307 INFO L78 Accepts]: Start accepts. Automaton has 23629 states and 124418 transitions. Word has length 15 [2020-09-17 01:41:31,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:41:31,307 INFO L479 AbstractCegarLoop]: Abstraction has 23629 states and 124418 transitions. [2020-09-17 01:41:31,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 01:41:31,308 INFO L276 IsEmpty]: Start isEmpty. Operand 23629 states and 124418 transitions. [2020-09-17 01:41:31,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 01:41:31,308 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:41:31,308 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:41:31,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2020-09-17 01:41:31,509 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:41:31,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:41:31,510 INFO L82 PathProgramCache]: Analyzing trace with hash 950817645, now seen corresponding path program 2 times [2020-09-17 01:41:31,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:41:31,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863340826] [2020-09-17 01:41:31,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:41:31,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:41:31,561 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 01:41:31,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863340826] [2020-09-17 01:41:31,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:41:31,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 01:41:31,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61079383] [2020-09-17 01:41:31,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 01:41:31,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:41:31,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 01:41:31,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 01:41:31,562 INFO L87 Difference]: Start difference. First operand 23629 states and 124418 transitions. Second operand 7 states. [2020-09-17 01:41:32,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:41:32,111 INFO L93 Difference]: Finished difference Result 58078 states and 269185 transitions. [2020-09-17 01:41:32,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 01:41:32,112 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-17 01:41:32,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:41:32,282 INFO L225 Difference]: With dead ends: 58078 [2020-09-17 01:41:32,282 INFO L226 Difference]: Without dead ends: 58061 [2020-09-17 01:41:32,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-17 01:41:33,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58061 states. [2020-09-17 01:41:34,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58061 to 23109. [2020-09-17 01:41:34,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23109 states. [2020-09-17 01:41:34,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23109 states to 23109 states and 121651 transitions. [2020-09-17 01:41:34,409 INFO L78 Accepts]: Start accepts. Automaton has 23109 states and 121651 transitions. Word has length 15 [2020-09-17 01:41:34,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:41:34,410 INFO L479 AbstractCegarLoop]: Abstraction has 23109 states and 121651 transitions. [2020-09-17 01:41:34,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 01:41:34,410 INFO L276 IsEmpty]: Start isEmpty. Operand 23109 states and 121651 transitions. [2020-09-17 01:41:34,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-17 01:41:34,410 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:41:34,410 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:41:34,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2020-09-17 01:41:34,411 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:41:34,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:41:34,411 INFO L82 PathProgramCache]: Analyzing trace with hash -2120658652, now seen corresponding path program 1 times [2020-09-17 01:41:34,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:41:34,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397237697] [2020-09-17 01:41:34,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:41:34,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:41:34,456 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 01:41:34,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397237697] [2020-09-17 01:41:34,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:41:34,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 01:41:34,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768416629] [2020-09-17 01:41:34,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 01:41:34,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:41:34,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 01:41:34,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 01:41:34,458 INFO L87 Difference]: Start difference. First operand 23109 states and 121651 transitions. Second operand 5 states. [2020-09-17 01:41:34,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:41:34,782 INFO L93 Difference]: Finished difference Result 41885 states and 209629 transitions. [2020-09-17 01:41:34,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 01:41:34,782 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-17 01:41:34,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:41:34,918 INFO L225 Difference]: With dead ends: 41885 [2020-09-17 01:41:34,918 INFO L226 Difference]: Without dead ends: 41856 [2020-09-17 01:41:34,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-17 01:41:35,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41856 states. [2020-09-17 01:41:36,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41856 to 28237. [2020-09-17 01:41:36,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28237 states. [2020-09-17 01:41:36,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28237 states to 28237 states and 150261 transitions. [2020-09-17 01:41:36,394 INFO L78 Accepts]: Start accepts. Automaton has 28237 states and 150261 transitions. Word has length 17 [2020-09-17 01:41:36,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:41:36,394 INFO L479 AbstractCegarLoop]: Abstraction has 28237 states and 150261 transitions. [2020-09-17 01:41:36,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 01:41:36,394 INFO L276 IsEmpty]: Start isEmpty. Operand 28237 states and 150261 transitions. [2020-09-17 01:41:36,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 01:41:36,395 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:41:36,395 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:41:36,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2020-09-17 01:41:36,395 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:41:36,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:41:36,395 INFO L82 PathProgramCache]: Analyzing trace with hash 269605662, now seen corresponding path program 1 times [2020-09-17 01:41:36,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:41:36,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688802509] [2020-09-17 01:41:36,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:41:36,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:41:36,447 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 01:41:36,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688802509] [2020-09-17 01:41:36,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212076394] [2020-09-17 01:41:36,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-09-17 01:41:36,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:41:36,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-17 01:41:36,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:41:36,555 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 01:41:36,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:41:36,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-17 01:41:36,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151325116] [2020-09-17 01:41:36,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 01:41:36,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:41:36,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 01:41:36,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-17 01:41:36,557 INFO L87 Difference]: Start difference. First operand 28237 states and 150261 transitions. Second operand 9 states. [2020-09-17 01:41:37,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:41:37,134 INFO L93 Difference]: Finished difference Result 66831 states and 314874 transitions. [2020-09-17 01:41:37,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 01:41:37,134 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-09-17 01:41:37,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:41:37,338 INFO L225 Difference]: With dead ends: 66831 [2020-09-17 01:41:37,338 INFO L226 Difference]: Without dead ends: 66807 [2020-09-17 01:41:37,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-17 01:41:38,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66807 states. [2020-09-17 01:41:39,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66807 to 28673. [2020-09-17 01:41:39,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28673 states. [2020-09-17 01:41:39,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28673 states to 28673 states and 152375 transitions. [2020-09-17 01:41:39,715 INFO L78 Accepts]: Start accepts. Automaton has 28673 states and 152375 transitions. Word has length 19 [2020-09-17 01:41:39,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:41:39,715 INFO L479 AbstractCegarLoop]: Abstraction has 28673 states and 152375 transitions. [2020-09-17 01:41:39,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 01:41:39,716 INFO L276 IsEmpty]: Start isEmpty. Operand 28673 states and 152375 transitions. [2020-09-17 01:41:39,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 01:41:39,718 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:41:39,718 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:41:39,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2020-09-17 01:41:39,931 INFO L427 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:41:39,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:41:39,932 INFO L82 PathProgramCache]: Analyzing trace with hash -2138468196, now seen corresponding path program 2 times [2020-09-17 01:41:39,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:41:39,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938290206] [2020-09-17 01:41:39,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:41:39,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:41:39,988 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 01:41:39,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938290206] [2020-09-17 01:41:39,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:41:39,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 01:41:39,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127761681] [2020-09-17 01:41:39,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 01:41:39,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:41:39,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 01:41:39,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 01:41:39,989 INFO L87 Difference]: Start difference. First operand 28673 states and 152375 transitions. Second operand 7 states. [2020-09-17 01:41:40,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:41:40,579 INFO L93 Difference]: Finished difference Result 68538 states and 323189 transitions. [2020-09-17 01:41:40,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 01:41:40,579 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-17 01:41:40,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:41:40,805 INFO L225 Difference]: With dead ends: 68538 [2020-09-17 01:41:40,805 INFO L226 Difference]: Without dead ends: 68505 [2020-09-17 01:41:40,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-17 01:41:41,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68505 states. [2020-09-17 01:41:42,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68505 to 28061. [2020-09-17 01:41:42,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28061 states. [2020-09-17 01:41:42,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28061 states to 28061 states and 149307 transitions. [2020-09-17 01:41:42,681 INFO L78 Accepts]: Start accepts. Automaton has 28061 states and 149307 transitions. Word has length 19 [2020-09-17 01:41:42,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:41:42,681 INFO L479 AbstractCegarLoop]: Abstraction has 28061 states and 149307 transitions. [2020-09-17 01:41:42,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 01:41:42,681 INFO L276 IsEmpty]: Start isEmpty. Operand 28061 states and 149307 transitions. [2020-09-17 01:41:42,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 01:41:42,682 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:41:42,682 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:41:42,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2020-09-17 01:41:42,683 INFO L427 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:41:42,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:41:42,683 INFO L82 PathProgramCache]: Analyzing trace with hash -2138444729, now seen corresponding path program 1 times [2020-09-17 01:41:42,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:41:42,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185661832] [2020-09-17 01:41:42,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:41:42,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:41:42,733 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 01:41:42,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185661832] [2020-09-17 01:41:42,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:41:42,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 01:41:42,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423899257] [2020-09-17 01:41:42,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 01:41:42,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:41:42,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 01:41:42,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 01:41:42,735 INFO L87 Difference]: Start difference. First operand 28061 states and 149307 transitions. Second operand 7 states. [2020-09-17 01:41:43,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:41:43,768 INFO L93 Difference]: Finished difference Result 69070 states and 326154 transitions. [2020-09-17 01:41:43,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 01:41:43,768 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-17 01:41:43,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:41:44,022 INFO L225 Difference]: With dead ends: 69070 [2020-09-17 01:41:44,022 INFO L226 Difference]: Without dead ends: 69037 [2020-09-17 01:41:44,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-17 01:41:44,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69037 states. [2020-09-17 01:41:45,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69037 to 28938. [2020-09-17 01:41:45,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28938 states. [2020-09-17 01:41:45,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28938 states to 28938 states and 153909 transitions. [2020-09-17 01:41:45,874 INFO L78 Accepts]: Start accepts. Automaton has 28938 states and 153909 transitions. Word has length 19 [2020-09-17 01:41:45,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:41:45,874 INFO L479 AbstractCegarLoop]: Abstraction has 28938 states and 153909 transitions. [2020-09-17 01:41:45,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 01:41:45,874 INFO L276 IsEmpty]: Start isEmpty. Operand 28938 states and 153909 transitions. [2020-09-17 01:41:45,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 01:41:45,875 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:41:45,875 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:41:45,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2020-09-17 01:41:45,875 INFO L427 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:41:45,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:41:45,876 INFO L82 PathProgramCache]: Analyzing trace with hash -2117255609, now seen corresponding path program 2 times [2020-09-17 01:41:45,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:41:45,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010219860] [2020-09-17 01:41:45,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:41:45,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:41:45,935 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 01:41:45,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010219860] [2020-09-17 01:41:45,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:41:45,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 01:41:45,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890373516] [2020-09-17 01:41:45,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 01:41:45,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:41:45,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 01:41:45,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 01:41:45,937 INFO L87 Difference]: Start difference. First operand 28938 states and 153909 transitions. Second operand 7 states. [2020-09-17 01:41:46,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:41:46,574 INFO L93 Difference]: Finished difference Result 70096 states and 331298 transitions. [2020-09-17 01:41:46,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 01:41:46,575 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-17 01:41:46,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:41:46,802 INFO L225 Difference]: With dead ends: 70096 [2020-09-17 01:41:46,802 INFO L226 Difference]: Without dead ends: 70063 [2020-09-17 01:41:46,802 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-17 01:41:47,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70063 states. [2020-09-17 01:41:49,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70063 to 29094. [2020-09-17 01:41:49,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29094 states. [2020-09-17 01:41:49,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29094 states to 29094 states and 154883 transitions. [2020-09-17 01:41:49,146 INFO L78 Accepts]: Start accepts. Automaton has 29094 states and 154883 transitions. Word has length 19 [2020-09-17 01:41:49,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:41:49,147 INFO L479 AbstractCegarLoop]: Abstraction has 29094 states and 154883 transitions. [2020-09-17 01:41:49,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 01:41:49,147 INFO L276 IsEmpty]: Start isEmpty. Operand 29094 states and 154883 transitions. [2020-09-17 01:41:49,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 01:41:49,148 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:41:49,148 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:41:49,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2020-09-17 01:41:49,149 INFO L427 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:41:49,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:41:49,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1393024961, now seen corresponding path program 1 times [2020-09-17 01:41:49,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:41:49,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21062856] [2020-09-17 01:41:49,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:41:49,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:41:49,239 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 01:41:49,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21062856] [2020-09-17 01:41:49,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588258557] [2020-09-17 01:41:49,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-09-17 01:41:49,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:41:49,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-17 01:41:49,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:41:49,391 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 01:41:49,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:41:49,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-17 01:41:49,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910728969] [2020-09-17 01:41:49,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 01:41:49,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:41:49,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 01:41:49,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-17 01:41:49,393 INFO L87 Difference]: Start difference. First operand 29094 states and 154883 transitions. Second operand 11 states. [2020-09-17 01:41:50,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:41:50,731 INFO L93 Difference]: Finished difference Result 100731 states and 448596 transitions. [2020-09-17 01:41:50,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:41:50,732 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-09-17 01:41:50,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:41:51,095 INFO L225 Difference]: With dead ends: 100731 [2020-09-17 01:41:51,095 INFO L226 Difference]: Without dead ends: 100715 [2020-09-17 01:41:51,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-17 01:41:52,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100715 states. [2020-09-17 01:41:53,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100715 to 28723. [2020-09-17 01:41:53,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28723 states. [2020-09-17 01:41:53,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28723 states to 28723 states and 152772 transitions. [2020-09-17 01:41:53,989 INFO L78 Accepts]: Start accepts. Automaton has 28723 states and 152772 transitions. Word has length 21 [2020-09-17 01:41:53,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:41:53,990 INFO L479 AbstractCegarLoop]: Abstraction has 28723 states and 152772 transitions. [2020-09-17 01:41:53,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 01:41:53,990 INFO L276 IsEmpty]: Start isEmpty. Operand 28723 states and 152772 transitions. [2020-09-17 01:41:53,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 01:41:53,991 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:41:53,991 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:41:54,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 01:41:54,192 INFO L427 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:41:54,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:41:54,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1414214081, now seen corresponding path program 2 times [2020-09-17 01:41:54,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:41:54,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725393327] [2020-09-17 01:41:54,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:41:54,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:41:54,262 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 01:41:54,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725393327] [2020-09-17 01:41:54,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821328253] [2020-09-17 01:41:54,262 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 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 [2020-09-17 01:41:54,363 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 01:41:54,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 01:41:54,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-17 01:41:54,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:41:54,389 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-17 01:41:54,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:41:54,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-17 01:41:54,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515042741] [2020-09-17 01:41:54,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 01:41:54,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:41:54,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 01:41:54,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-17 01:41:54,393 INFO L87 Difference]: Start difference. First operand 28723 states and 152772 transitions. Second operand 11 states. [2020-09-17 01:41:55,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:41:55,730 INFO L93 Difference]: Finished difference Result 99884 states and 444368 transitions. [2020-09-17 01:41:55,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:41:55,731 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-09-17 01:41:55,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:41:56,044 INFO L225 Difference]: With dead ends: 99884 [2020-09-17 01:41:56,044 INFO L226 Difference]: Without dead ends: 99863 [2020-09-17 01:41:56,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-17 01:41:57,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99863 states. [2020-09-17 01:41:58,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99863 to 28343. [2020-09-17 01:41:58,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28343 states. [2020-09-17 01:41:59,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28343 states to 28343 states and 150639 transitions. [2020-09-17 01:41:59,057 INFO L78 Accepts]: Start accepts. Automaton has 28343 states and 150639 transitions. Word has length 21 [2020-09-17 01:41:59,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:41:59,057 INFO L479 AbstractCegarLoop]: Abstraction has 28343 states and 150639 transitions. [2020-09-17 01:41:59,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 01:41:59,058 INFO L276 IsEmpty]: Start isEmpty. Operand 28343 states and 150639 transitions. [2020-09-17 01:41:59,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 01:41:59,058 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:41:59,059 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:41:59,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2020-09-17 01:41:59,259 INFO L427 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:41:59,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:41:59,260 INFO L82 PathProgramCache]: Analyzing trace with hash -2073547329, now seen corresponding path program 3 times [2020-09-17 01:41:59,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:41:59,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143821723] [2020-09-17 01:41:59,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:41:59,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:41:59,331 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 01:41:59,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143821723] [2020-09-17 01:41:59,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:41:59,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 01:41:59,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329866064] [2020-09-17 01:41:59,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 01:41:59,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:41:59,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 01:41:59,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 01:41:59,333 INFO L87 Difference]: Start difference. First operand 28343 states and 150639 transitions. Second operand 9 states. [2020-09-17 01:42:00,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:42:00,646 INFO L93 Difference]: Finished difference Result 100063 states and 445271 transitions. [2020-09-17 01:42:00,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:42:00,646 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-17 01:42:00,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:42:00,974 INFO L225 Difference]: With dead ends: 100063 [2020-09-17 01:42:00,974 INFO L226 Difference]: Without dead ends: 100047 [2020-09-17 01:42:00,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 01:42:02,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100047 states. [2020-09-17 01:42:03,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100047 to 27662. [2020-09-17 01:42:03,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27662 states. [2020-09-17 01:42:04,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27662 states to 27662 states and 147100 transitions. [2020-09-17 01:42:04,019 INFO L78 Accepts]: Start accepts. Automaton has 27662 states and 147100 transitions. Word has length 21 [2020-09-17 01:42:04,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:42:04,019 INFO L479 AbstractCegarLoop]: Abstraction has 27662 states and 147100 transitions. [2020-09-17 01:42:04,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 01:42:04,019 INFO L276 IsEmpty]: Start isEmpty. Operand 27662 states and 147100 transitions. [2020-09-17 01:42:04,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 01:42:04,020 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:42:04,020 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:42:04,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2020-09-17 01:42:04,021 INFO L427 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:42:04,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:42:04,021 INFO L82 PathProgramCache]: Analyzing trace with hash -2051019009, now seen corresponding path program 4 times [2020-09-17 01:42:04,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:42:04,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734444530] [2020-09-17 01:42:04,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:42:04,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:42:04,104 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 01:42:04,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734444530] [2020-09-17 01:42:04,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:42:04,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 01:42:04,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346769080] [2020-09-17 01:42:04,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 01:42:04,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:42:04,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 01:42:04,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 01:42:04,107 INFO L87 Difference]: Start difference. First operand 27662 states and 147100 transitions. Second operand 9 states. [2020-09-17 01:42:05,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:42:05,384 INFO L93 Difference]: Finished difference Result 99531 states and 442783 transitions. [2020-09-17 01:42:05,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:42:05,385 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-17 01:42:05,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:42:05,728 INFO L225 Difference]: With dead ends: 99531 [2020-09-17 01:42:05,728 INFO L226 Difference]: Without dead ends: 99510 [2020-09-17 01:42:05,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 01:42:06,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99510 states. [2020-09-17 01:42:08,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99510 to 27286. [2020-09-17 01:42:08,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27286 states. [2020-09-17 01:42:08,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27286 states to 27286 states and 144979 transitions. [2020-09-17 01:42:08,536 INFO L78 Accepts]: Start accepts. Automaton has 27286 states and 144979 transitions. Word has length 21 [2020-09-17 01:42:08,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:42:08,536 INFO L479 AbstractCegarLoop]: Abstraction has 27286 states and 144979 transitions. [2020-09-17 01:42:08,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 01:42:08,537 INFO L276 IsEmpty]: Start isEmpty. Operand 27286 states and 144979 transitions. [2020-09-17 01:42:08,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 01:42:08,538 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:42:08,538 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:42:08,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2020-09-17 01:42:08,538 INFO L427 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:42:08,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:42:08,538 INFO L82 PathProgramCache]: Analyzing trace with hash 102150333, now seen corresponding path program 1 times [2020-09-17 01:42:08,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:42:08,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070785553] [2020-09-17 01:42:08,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:42:08,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:42:08,582 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 01:42:08,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070785553] [2020-09-17 01:42:08,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:42:08,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 01:42:08,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728249309] [2020-09-17 01:42:08,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 01:42:08,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:42:08,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 01:42:08,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 01:42:08,585 INFO L87 Difference]: Start difference. First operand 27286 states and 144979 transitions. Second operand 5 states. [2020-09-17 01:42:08,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:42:08,957 INFO L93 Difference]: Finished difference Result 49004 states and 248721 transitions. [2020-09-17 01:42:08,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 01:42:08,957 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-17 01:42:08,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:42:09,113 INFO L225 Difference]: With dead ends: 49004 [2020-09-17 01:42:09,113 INFO L226 Difference]: Without dead ends: 48958 [2020-09-17 01:42:09,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-17 01:42:09,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48958 states. [2020-09-17 01:42:10,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48958 to 33985. [2020-09-17 01:42:10,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33985 states. [2020-09-17 01:42:11,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33985 states to 33985 states and 181777 transitions. [2020-09-17 01:42:11,472 INFO L78 Accepts]: Start accepts. Automaton has 33985 states and 181777 transitions. Word has length 21 [2020-09-17 01:42:11,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:42:11,472 INFO L479 AbstractCegarLoop]: Abstraction has 33985 states and 181777 transitions. [2020-09-17 01:42:11,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 01:42:11,472 INFO L276 IsEmpty]: Start isEmpty. Operand 33985 states and 181777 transitions. [2020-09-17 01:42:11,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 01:42:11,473 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:42:11,474 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:42:11,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2020-09-17 01:42:11,474 INFO L427 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:42:11,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:42:11,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1130516927, now seen corresponding path program 5 times [2020-09-17 01:42:11,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:42:11,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004951980] [2020-09-17 01:42:11,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:42:11,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:42:11,556 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 01:42:11,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004951980] [2020-09-17 01:42:11,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:42:11,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 01:42:11,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991772335] [2020-09-17 01:42:11,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 01:42:11,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:42:11,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 01:42:11,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 01:42:11,558 INFO L87 Difference]: Start difference. First operand 33985 states and 181777 transitions. Second operand 9 states. [2020-09-17 01:42:12,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:42:12,869 INFO L93 Difference]: Finished difference Result 115592 states and 523747 transitions. [2020-09-17 01:42:12,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:42:12,869 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-17 01:42:12,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:42:13,253 INFO L225 Difference]: With dead ends: 115592 [2020-09-17 01:42:13,253 INFO L226 Difference]: Without dead ends: 115567 [2020-09-17 01:42:13,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 01:42:14,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115567 states. [2020-09-17 01:42:18,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115567 to 33074. [2020-09-17 01:42:18,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33074 states. [2020-09-17 01:42:19,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33074 states to 33074 states and 176935 transitions. [2020-09-17 01:42:19,064 INFO L78 Accepts]: Start accepts. Automaton has 33074 states and 176935 transitions. Word has length 21 [2020-09-17 01:42:19,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:42:19,065 INFO L479 AbstractCegarLoop]: Abstraction has 33074 states and 176935 transitions. [2020-09-17 01:42:19,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 01:42:19,065 INFO L276 IsEmpty]: Start isEmpty. Operand 33074 states and 176935 transitions. [2020-09-17 01:42:19,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-17 01:42:19,066 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:42:19,066 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:42:19,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2020-09-17 01:42:19,066 INFO L427 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:42:19,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:42:19,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1131856127, now seen corresponding path program 6 times [2020-09-17 01:42:19,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:42:19,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756306657] [2020-09-17 01:42:19,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:42:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:42:19,150 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 01:42:19,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756306657] [2020-09-17 01:42:19,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:42:19,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 01:42:19,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314599764] [2020-09-17 01:42:19,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 01:42:19,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:42:19,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 01:42:19,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 01:42:19,152 INFO L87 Difference]: Start difference. First operand 33074 states and 176935 transitions. Second operand 9 states. [2020-09-17 01:42:20,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:42:20,446 INFO L93 Difference]: Finished difference Result 114402 states and 517732 transitions. [2020-09-17 01:42:20,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:42:20,447 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-17 01:42:20,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:42:20,884 INFO L225 Difference]: With dead ends: 114402 [2020-09-17 01:42:20,884 INFO L226 Difference]: Without dead ends: 114371 [2020-09-17 01:42:20,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 01:42:22,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114371 states. [2020-09-17 01:42:23,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114371 to 31960. [2020-09-17 01:42:23,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31960 states. [2020-09-17 01:42:24,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31960 states to 31960 states and 171209 transitions. [2020-09-17 01:42:24,094 INFO L78 Accepts]: Start accepts. Automaton has 31960 states and 171209 transitions. Word has length 21 [2020-09-17 01:42:24,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:42:24,094 INFO L479 AbstractCegarLoop]: Abstraction has 31960 states and 171209 transitions. [2020-09-17 01:42:24,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 01:42:24,094 INFO L276 IsEmpty]: Start isEmpty. Operand 31960 states and 171209 transitions. [2020-09-17 01:42:24,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 01:42:24,096 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:42:24,096 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:42:24,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2020-09-17 01:42:24,096 INFO L427 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:42:24,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:42:24,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1106577557, now seen corresponding path program 1 times [2020-09-17 01:42:24,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:42:24,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972470721] [2020-09-17 01:42:24,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:42:24,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:42:24,154 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 01:42:24,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972470721] [2020-09-17 01:42:24,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345049785] [2020-09-17 01:42:24,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-09-17 01:42:24,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:42:24,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-17 01:42:24,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:42:24,261 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 01:42:24,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:42:24,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-17 01:42:24,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127184247] [2020-09-17 01:42:24,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 01:42:24,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:42:24,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 01:42:24,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-17 01:42:24,263 INFO L87 Difference]: Start difference. First operand 31960 states and 171209 transitions. Second operand 9 states. [2020-09-17 01:42:24,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:42:24,986 INFO L93 Difference]: Finished difference Result 75380 states and 361389 transitions. [2020-09-17 01:42:24,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 01:42:24,987 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-09-17 01:42:24,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:42:25,226 INFO L225 Difference]: With dead ends: 75380 [2020-09-17 01:42:25,226 INFO L226 Difference]: Without dead ends: 75344 [2020-09-17 01:42:25,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-17 01:42:28,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75344 states. [2020-09-17 01:42:29,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75344 to 32974. [2020-09-17 01:42:29,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32974 states. [2020-09-17 01:42:29,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32974 states to 32974 states and 176363 transitions. [2020-09-17 01:42:29,791 INFO L78 Accepts]: Start accepts. Automaton has 32974 states and 176363 transitions. Word has length 23 [2020-09-17 01:42:29,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:42:29,791 INFO L479 AbstractCegarLoop]: Abstraction has 32974 states and 176363 transitions. [2020-09-17 01:42:29,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 01:42:29,791 INFO L276 IsEmpty]: Start isEmpty. Operand 32974 states and 176363 transitions. [2020-09-17 01:42:29,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 01:42:29,793 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:42:29,793 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:42:29,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 01:42:29,994 INFO L427 AbstractCegarLoop]: === Iteration 19 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:42:29,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:42:29,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1026706248, now seen corresponding path program 1 times [2020-09-17 01:42:29,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:42:29,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250463967] [2020-09-17 01:42:29,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:42:30,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:42:30,058 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 01:42:30,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250463967] [2020-09-17 01:42:30,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297155110] [2020-09-17 01:42:30,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-09-17 01:42:30,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:42:30,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-17 01:42:30,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:42:30,171 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 01:42:30,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:42:30,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-17 01:42:30,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260295686] [2020-09-17 01:42:30,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 01:42:30,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:42:30,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 01:42:30,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-17 01:42:30,172 INFO L87 Difference]: Start difference. First operand 32974 states and 176363 transitions. Second operand 9 states. [2020-09-17 01:42:30,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:42:30,873 INFO L93 Difference]: Finished difference Result 79463 states and 381713 transitions. [2020-09-17 01:42:30,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 01:42:30,873 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-09-17 01:42:30,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:42:31,131 INFO L225 Difference]: With dead ends: 79463 [2020-09-17 01:42:31,131 INFO L226 Difference]: Without dead ends: 79421 [2020-09-17 01:42:31,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-17 01:42:32,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79421 states. [2020-09-17 01:42:33,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79421 to 33977. [2020-09-17 01:42:33,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33977 states. [2020-09-17 01:42:33,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33977 states to 33977 states and 181698 transitions. [2020-09-17 01:42:33,833 INFO L78 Accepts]: Start accepts. Automaton has 33977 states and 181698 transitions. Word has length 23 [2020-09-17 01:42:33,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:42:33,833 INFO L479 AbstractCegarLoop]: Abstraction has 33977 states and 181698 transitions. [2020-09-17 01:42:33,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 01:42:33,833 INFO L276 IsEmpty]: Start isEmpty. Operand 33977 states and 181698 transitions. [2020-09-17 01:42:33,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 01:42:33,835 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:42:33,835 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:42:34,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,37 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 01:42:34,036 INFO L427 AbstractCegarLoop]: === Iteration 20 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:42:34,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:42:34,037 INFO L82 PathProgramCache]: Analyzing trace with hash -617779723, now seen corresponding path program 2 times [2020-09-17 01:42:34,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:42:34,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547716836] [2020-09-17 01:42:34,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:42:34,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:42:34,102 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 01:42:34,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547716836] [2020-09-17 01:42:34,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:42:34,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 01:42:34,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312294570] [2020-09-17 01:42:34,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 01:42:34,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:42:34,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 01:42:34,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 01:42:34,104 INFO L87 Difference]: Start difference. First operand 33977 states and 181698 transitions. Second operand 7 states. [2020-09-17 01:42:34,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:42:34,851 INFO L93 Difference]: Finished difference Result 80867 states and 388763 transitions. [2020-09-17 01:42:34,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 01:42:34,852 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-17 01:42:34,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:42:35,118 INFO L225 Difference]: With dead ends: 80867 [2020-09-17 01:42:35,118 INFO L226 Difference]: Without dead ends: 80812 [2020-09-17 01:42:35,119 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-17 01:42:38,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80812 states. [2020-09-17 01:42:39,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80812 to 34223. [2020-09-17 01:42:39,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34223 states. [2020-09-17 01:42:39,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34223 states to 34223 states and 183033 transitions. [2020-09-17 01:42:39,767 INFO L78 Accepts]: Start accepts. Automaton has 34223 states and 183033 transitions. Word has length 23 [2020-09-17 01:42:39,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:42:39,767 INFO L479 AbstractCegarLoop]: Abstraction has 34223 states and 183033 transitions. [2020-09-17 01:42:39,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 01:42:39,767 INFO L276 IsEmpty]: Start isEmpty. Operand 34223 states and 183033 transitions. [2020-09-17 01:42:39,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 01:42:39,769 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:42:39,769 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:42:39,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2020-09-17 01:42:39,769 INFO L427 AbstractCegarLoop]: === Iteration 21 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:42:39,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:42:39,770 INFO L82 PathProgramCache]: Analyzing trace with hash -617778328, now seen corresponding path program 2 times [2020-09-17 01:42:39,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:42:39,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399904953] [2020-09-17 01:42:39,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:42:39,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:42:39,827 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 01:42:39,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399904953] [2020-09-17 01:42:39,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:42:39,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 01:42:39,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646977970] [2020-09-17 01:42:39,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 01:42:39,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:42:39,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 01:42:39,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 01:42:39,828 INFO L87 Difference]: Start difference. First operand 34223 states and 183033 transitions. Second operand 7 states. [2020-09-17 01:42:40,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:42:40,518 INFO L93 Difference]: Finished difference Result 80887 states and 388540 transitions. [2020-09-17 01:42:40,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 01:42:40,519 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-17 01:42:40,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:42:40,805 INFO L225 Difference]: With dead ends: 80887 [2020-09-17 01:42:40,805 INFO L226 Difference]: Without dead ends: 80832 [2020-09-17 01:42:40,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-17 01:42:42,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80832 states. [2020-09-17 01:42:43,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80832 to 34508. [2020-09-17 01:42:43,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34508 states. [2020-09-17 01:42:43,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34508 states to 34508 states and 184670 transitions. [2020-09-17 01:42:43,480 INFO L78 Accepts]: Start accepts. Automaton has 34508 states and 184670 transitions. Word has length 23 [2020-09-17 01:42:43,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:42:43,481 INFO L479 AbstractCegarLoop]: Abstraction has 34508 states and 184670 transitions. [2020-09-17 01:42:43,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 01:42:43,481 INFO L276 IsEmpty]: Start isEmpty. Operand 34508 states and 184670 transitions. [2020-09-17 01:42:43,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 01:42:43,483 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:42:43,483 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:42:43,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2020-09-17 01:42:43,483 INFO L427 AbstractCegarLoop]: === Iteration 22 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:42:43,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:42:43,483 INFO L82 PathProgramCache]: Analyzing trace with hash -617756256, now seen corresponding path program 1 times [2020-09-17 01:42:43,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:42:43,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366037193] [2020-09-17 01:42:43,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:42:43,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:42:43,551 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 01:42:43,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366037193] [2020-09-17 01:42:43,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:42:43,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 01:42:43,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031523676] [2020-09-17 01:42:43,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 01:42:43,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:42:43,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 01:42:43,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 01:42:43,554 INFO L87 Difference]: Start difference. First operand 34508 states and 184670 transitions. Second operand 7 states. [2020-09-17 01:42:44,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:42:44,318 INFO L93 Difference]: Finished difference Result 83313 states and 401031 transitions. [2020-09-17 01:42:44,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 01:42:44,319 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-17 01:42:44,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:42:44,622 INFO L225 Difference]: With dead ends: 83313 [2020-09-17 01:42:44,622 INFO L226 Difference]: Without dead ends: 83258 [2020-09-17 01:42:44,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-17 01:42:48,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83258 states. [2020-09-17 01:42:49,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83258 to 36258. [2020-09-17 01:42:49,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36258 states. [2020-09-17 01:42:49,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36258 states to 36258 states and 193887 transitions. [2020-09-17 01:42:49,472 INFO L78 Accepts]: Start accepts. Automaton has 36258 states and 193887 transitions. Word has length 23 [2020-09-17 01:42:49,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:42:49,472 INFO L479 AbstractCegarLoop]: Abstraction has 36258 states and 193887 transitions. [2020-09-17 01:42:49,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 01:42:49,473 INFO L276 IsEmpty]: Start isEmpty. Operand 36258 states and 193887 transitions. [2020-09-17 01:42:49,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 01:42:49,475 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:42:49,475 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:42:49,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2020-09-17 01:42:49,475 INFO L427 AbstractCegarLoop]: === Iteration 23 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:42:49,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:42:49,475 INFO L82 PathProgramCache]: Analyzing trace with hash -581716896, now seen corresponding path program 2 times [2020-09-17 01:42:49,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:42:49,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429500458] [2020-09-17 01:42:49,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:42:49,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:42:49,537 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 01:42:49,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429500458] [2020-09-17 01:42:49,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:42:49,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 01:42:49,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237704359] [2020-09-17 01:42:49,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 01:42:49,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:42:49,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 01:42:49,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 01:42:49,539 INFO L87 Difference]: Start difference. First operand 36258 states and 193887 transitions. Second operand 7 states. [2020-09-17 01:42:50,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:42:50,332 INFO L93 Difference]: Finished difference Result 84364 states and 406246 transitions. [2020-09-17 01:42:50,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 01:42:50,333 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-17 01:42:50,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:42:50,608 INFO L225 Difference]: With dead ends: 84364 [2020-09-17 01:42:50,609 INFO L226 Difference]: Without dead ends: 84309 [2020-09-17 01:42:50,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-17 01:42:52,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84309 states. [2020-09-17 01:42:53,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84309 to 37062. [2020-09-17 01:42:53,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37062 states. [2020-09-17 01:42:53,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37062 states to 37062 states and 198528 transitions. [2020-09-17 01:42:53,584 INFO L78 Accepts]: Start accepts. Automaton has 37062 states and 198528 transitions. Word has length 23 [2020-09-17 01:42:53,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:42:53,585 INFO L479 AbstractCegarLoop]: Abstraction has 37062 states and 198528 transitions. [2020-09-17 01:42:53,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 01:42:53,585 INFO L276 IsEmpty]: Start isEmpty. Operand 37062 states and 198528 transitions. [2020-09-17 01:42:53,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 01:42:53,588 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:42:53,588 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:42:53,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2020-09-17 01:42:53,589 INFO L427 AbstractCegarLoop]: === Iteration 24 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:42:53,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:42:53,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1745706838, now seen corresponding path program 1 times [2020-09-17 01:42:53,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:42:53,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491007208] [2020-09-17 01:42:53,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:42:53,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:42:53,677 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 01:42:53,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491007208] [2020-09-17 01:42:53,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962705866] [2020-09-17 01:42:53,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-09-17 01:42:53,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:42:53,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-17 01:42:53,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:42:53,829 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 01:42:53,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:42:53,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-17 01:42:53,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785071932] [2020-09-17 01:42:53,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 01:42:53,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:42:53,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 01:42:53,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-17 01:42:53,831 INFO L87 Difference]: Start difference. First operand 37062 states and 198528 transitions. Second operand 11 states. [2020-09-17 01:42:58,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:42:58,120 INFO L93 Difference]: Finished difference Result 122892 states and 561130 transitions. [2020-09-17 01:42:58,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:42:58,121 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-17 01:42:58,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:42:58,530 INFO L225 Difference]: With dead ends: 122892 [2020-09-17 01:42:58,531 INFO L226 Difference]: Without dead ends: 122862 [2020-09-17 01:42:58,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-17 01:42:59,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122862 states. [2020-09-17 01:43:01,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122862 to 36735. [2020-09-17 01:43:01,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36735 states. [2020-09-17 01:43:01,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36735 states to 36735 states and 196486 transitions. [2020-09-17 01:43:01,378 INFO L78 Accepts]: Start accepts. Automaton has 36735 states and 196486 transitions. Word has length 25 [2020-09-17 01:43:01,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:43:01,378 INFO L479 AbstractCegarLoop]: Abstraction has 36735 states and 196486 transitions. [2020-09-17 01:43:01,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 01:43:01,378 INFO L276 IsEmpty]: Start isEmpty. Operand 36735 states and 196486 transitions. [2020-09-17 01:43:01,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 01:43:01,381 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:43:01,381 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forcibly destroying the process [2020-09-17 01:43:01,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2020-09-17 01:43:01,932 INFO L427 AbstractCegarLoop]: === Iteration 25 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:43:01,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:43:01,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1730856598, now seen corresponding path program 2 times [2020-09-17 01:43:01,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:43:01,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791548313] [2020-09-17 01:43:01,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:43:01,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:43:02,009 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 01:43:02,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791548313] [2020-09-17 01:43:02,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589684897] [2020-09-17 01:43:02,010 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 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 [2020-09-17 01:43:02,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 01:43:02,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 01:43:02,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-17 01:43:02,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:43:02,164 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 01:43:02,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:43:02,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-17 01:43:02,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841022874] [2020-09-17 01:43:02,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 01:43:02,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:43:02,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 01:43:02,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-17 01:43:02,165 INFO L87 Difference]: Start difference. First operand 36735 states and 196486 transitions. Second operand 11 states. [2020-09-17 01:43:03,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:43:03,637 INFO L93 Difference]: Finished difference Result 121506 states and 554103 transitions. [2020-09-17 01:43:03,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:43:03,638 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-17 01:43:03,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:43:04,029 INFO L225 Difference]: With dead ends: 121506 [2020-09-17 01:43:04,030 INFO L226 Difference]: Without dead ends: 121473 [2020-09-17 01:43:04,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-17 01:43:05,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121473 states. [2020-09-17 01:43:09,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121473 to 36666. [2020-09-17 01:43:09,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36666 states. [2020-09-17 01:43:10,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36666 states to 36666 states and 195964 transitions. [2020-09-17 01:43:10,165 INFO L78 Accepts]: Start accepts. Automaton has 36666 states and 195964 transitions. Word has length 25 [2020-09-17 01:43:10,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:43:10,166 INFO L479 AbstractCegarLoop]: Abstraction has 36666 states and 195964 transitions. [2020-09-17 01:43:10,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 01:43:10,166 INFO L276 IsEmpty]: Start isEmpty. Operand 36666 states and 195964 transitions. [2020-09-17 01:43:10,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 01:43:10,170 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:43:10,170 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:43:10,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 01:43:10,371 INFO L427 AbstractCegarLoop]: === Iteration 26 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:43:10,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:43:10,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1730878670, now seen corresponding path program 1 times [2020-09-17 01:43:10,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:43:10,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665462760] [2020-09-17 01:43:10,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:43:10,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:43:10,459 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 01:43:10,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665462760] [2020-09-17 01:43:10,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240079830] [2020-09-17 01:43:10,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-09-17 01:43:10,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:43:10,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-17 01:43:10,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:43:10,614 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 01:43:10,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:43:10,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-17 01:43:10,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296718992] [2020-09-17 01:43:10,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 01:43:10,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:43:10,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 01:43:10,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-17 01:43:10,616 INFO L87 Difference]: Start difference. First operand 36666 states and 195964 transitions. Second operand 11 states. [2020-09-17 01:43:12,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:43:12,030 INFO L93 Difference]: Finished difference Result 120500 states and 549397 transitions. [2020-09-17 01:43:12,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:43:12,031 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-17 01:43:12,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:43:12,412 INFO L225 Difference]: With dead ends: 120500 [2020-09-17 01:43:12,412 INFO L226 Difference]: Without dead ends: 120470 [2020-09-17 01:43:12,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-17 01:43:14,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120470 states. [2020-09-17 01:43:15,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120470 to 36343. [2020-09-17 01:43:15,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36343 states. [2020-09-17 01:43:16,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36343 states to 36343 states and 194056 transitions. [2020-09-17 01:43:16,042 INFO L78 Accepts]: Start accepts. Automaton has 36343 states and 194056 transitions. Word has length 25 [2020-09-17 01:43:16,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:43:16,042 INFO L479 AbstractCegarLoop]: Abstraction has 36343 states and 194056 transitions. [2020-09-17 01:43:16,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 01:43:16,043 INFO L276 IsEmpty]: Start isEmpty. Operand 36343 states and 194056 transitions. [2020-09-17 01:43:16,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 01:43:16,046 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:43:16,046 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:43:16,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2020-09-17 01:43:16,247 INFO L427 AbstractCegarLoop]: === Iteration 27 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:43:16,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:43:16,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1766918030, now seen corresponding path program 2 times [2020-09-17 01:43:16,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:43:16,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145384436] [2020-09-17 01:43:16,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:43:16,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:43:16,333 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 01:43:16,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145384436] [2020-09-17 01:43:16,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097197165] [2020-09-17 01:43:16,334 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 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 [2020-09-17 01:43:16,454 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 01:43:16,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 01:43:16,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-17 01:43:16,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:43:16,480 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 01:43:16,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:43:16,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-17 01:43:16,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261412618] [2020-09-17 01:43:16,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 01:43:16,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:43:16,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 01:43:16,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-17 01:43:16,481 INFO L87 Difference]: Start difference. First operand 36343 states and 194056 transitions. Second operand 11 states. [2020-09-17 01:43:18,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:43:18,738 INFO L93 Difference]: Finished difference Result 119731 states and 545560 transitions. [2020-09-17 01:43:18,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:43:18,738 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-17 01:43:18,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:43:19,131 INFO L225 Difference]: With dead ends: 119731 [2020-09-17 01:43:19,131 INFO L226 Difference]: Without dead ends: 119698 [2020-09-17 01:43:19,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-17 01:43:20,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119698 states. [2020-09-17 01:43:22,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119698 to 36040. [2020-09-17 01:43:22,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36040 states. [2020-09-17 01:43:22,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36040 states to 36040 states and 192287 transitions. [2020-09-17 01:43:22,978 INFO L78 Accepts]: Start accepts. Automaton has 36040 states and 192287 transitions. Word has length 25 [2020-09-17 01:43:22,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:43:22,978 INFO L479 AbstractCegarLoop]: Abstraction has 36040 states and 192287 transitions. [2020-09-17 01:43:22,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 01:43:22,978 INFO L276 IsEmpty]: Start isEmpty. Operand 36040 states and 192287 transitions. [2020-09-17 01:43:22,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 01:43:22,981 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:43:22,981 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:43:23,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 01:43:23,182 INFO L427 AbstractCegarLoop]: === Iteration 28 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:43:23,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:43:23,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1849107924, now seen corresponding path program 3 times [2020-09-17 01:43:23,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:43:23,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048985375] [2020-09-17 01:43:23,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:43:23,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:43:23,269 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 01:43:23,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048985375] [2020-09-17 01:43:23,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036988286] [2020-09-17 01:43:23,270 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 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 [2020-09-17 01:43:23,388 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-17 01:43:23,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 01:43:23,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-17 01:43:23,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:43:23,413 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 01:43:23,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:43:23,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-17 01:43:23,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303816961] [2020-09-17 01:43:23,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 01:43:23,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:43:23,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 01:43:23,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-17 01:43:23,415 INFO L87 Difference]: Start difference. First operand 36040 states and 192287 transitions. Second operand 11 states. [2020-09-17 01:43:24,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:43:24,857 INFO L93 Difference]: Finished difference Result 119762 states and 545615 transitions. [2020-09-17 01:43:24,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:43:24,858 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-17 01:43:24,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:43:25,251 INFO L225 Difference]: With dead ends: 119762 [2020-09-17 01:43:25,251 INFO L226 Difference]: Without dead ends: 119732 [2020-09-17 01:43:25,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-17 01:43:26,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119732 states. [2020-09-17 01:43:28,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119732 to 35475. [2020-09-17 01:43:28,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35475 states. [2020-09-17 01:43:28,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35475 states to 35475 states and 189246 transitions. [2020-09-17 01:43:28,763 INFO L78 Accepts]: Start accepts. Automaton has 35475 states and 189246 transitions. Word has length 25 [2020-09-17 01:43:28,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:43:28,763 INFO L479 AbstractCegarLoop]: Abstraction has 35475 states and 189246 transitions. [2020-09-17 01:43:28,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 01:43:28,763 INFO L276 IsEmpty]: Start isEmpty. Operand 35475 states and 189246 transitions. [2020-09-17 01:43:28,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 01:43:28,766 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:43:28,766 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:43:28,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2020-09-17 01:43:28,967 INFO L427 AbstractCegarLoop]: === Iteration 29 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:43:28,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:43:28,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1177775680, now seen corresponding path program 4 times [2020-09-17 01:43:28,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:43:28,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528012958] [2020-09-17 01:43:28,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:43:28,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:43:29,055 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 01:43:29,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528012958] [2020-09-17 01:43:29,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491271816] [2020-09-17 01:43:29,056 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 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 [2020-09-17 01:43:29,178 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 01:43:29,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 01:43:29,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-17 01:43:29,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:43:29,208 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 01:43:29,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:43:29,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-17 01:43:29,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37783412] [2020-09-17 01:43:29,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 01:43:29,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:43:29,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 01:43:29,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-17 01:43:29,210 INFO L87 Difference]: Start difference. First operand 35475 states and 189246 transitions. Second operand 11 states. [2020-09-17 01:43:31,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:43:31,349 INFO L93 Difference]: Finished difference Result 120788 states and 550630 transitions. [2020-09-17 01:43:31,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:43:31,350 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-17 01:43:31,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:43:31,855 INFO L225 Difference]: With dead ends: 120788 [2020-09-17 01:43:31,856 INFO L226 Difference]: Without dead ends: 120755 [2020-09-17 01:43:31,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-17 01:43:33,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120755 states. [2020-09-17 01:43:34,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120755 to 35406. [2020-09-17 01:43:34,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35406 states. [2020-09-17 01:43:35,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35406 states to 35406 states and 188724 transitions. [2020-09-17 01:43:35,770 INFO L78 Accepts]: Start accepts. Automaton has 35406 states and 188724 transitions. Word has length 25 [2020-09-17 01:43:35,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:43:35,771 INFO L479 AbstractCegarLoop]: Abstraction has 35406 states and 188724 transitions. [2020-09-17 01:43:35,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 01:43:35,771 INFO L276 IsEmpty]: Start isEmpty. Operand 35406 states and 188724 transitions. [2020-09-17 01:43:35,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 01:43:35,773 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:43:35,773 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:43:35,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2020-09-17 01:43:35,983 INFO L427 AbstractCegarLoop]: === Iteration 30 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:43:35,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:43:35,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1177752213, now seen corresponding path program 1 times [2020-09-17 01:43:35,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:43:35,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332152242] [2020-09-17 01:43:35,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:43:35,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:43:36,069 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 01:43:36,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332152242] [2020-09-17 01:43:36,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978024935] [2020-09-17 01:43:36,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-09-17 01:43:36,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:43:36,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-17 01:43:36,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:43:36,223 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 01:43:36,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:43:36,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-17 01:43:36,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686027329] [2020-09-17 01:43:36,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 01:43:36,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:43:36,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 01:43:36,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-17 01:43:36,225 INFO L87 Difference]: Start difference. First operand 35406 states and 188724 transitions. Second operand 11 states. [2020-09-17 01:43:37,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:43:37,781 INFO L93 Difference]: Finished difference Result 120291 states and 549128 transitions. [2020-09-17 01:43:37,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:43:37,782 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-17 01:43:37,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:43:38,233 INFO L225 Difference]: With dead ends: 120291 [2020-09-17 01:43:38,233 INFO L226 Difference]: Without dead ends: 120261 [2020-09-17 01:43:38,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-17 01:43:39,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120261 states. [2020-09-17 01:43:41,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120261 to 35196. [2020-09-17 01:43:41,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35196 states. [2020-09-17 01:43:41,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35196 states to 35196 states and 187476 transitions. [2020-09-17 01:43:41,745 INFO L78 Accepts]: Start accepts. Automaton has 35196 states and 187476 transitions. Word has length 25 [2020-09-17 01:43:41,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:43:41,745 INFO L479 AbstractCegarLoop]: Abstraction has 35196 states and 187476 transitions. [2020-09-17 01:43:41,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 01:43:41,745 INFO L276 IsEmpty]: Start isEmpty. Operand 35196 states and 187476 transitions. [2020-09-17 01:43:41,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 01:43:41,748 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:43:41,748 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:43:41,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 01:43:41,949 INFO L427 AbstractCegarLoop]: === Iteration 31 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:43:41,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:43:41,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1141712853, now seen corresponding path program 2 times [2020-09-17 01:43:41,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:43:41,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125247407] [2020-09-17 01:43:41,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:43:41,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:43:42,037 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 01:43:42,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125247407] [2020-09-17 01:43:42,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515416237] [2020-09-17 01:43:42,038 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 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 [2020-09-17 01:43:42,160 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 01:43:42,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 01:43:42,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-17 01:43:42,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:43:42,187 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 01:43:42,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:43:42,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-17 01:43:42,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978170431] [2020-09-17 01:43:42,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 01:43:42,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:43:42,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 01:43:42,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-17 01:43:42,189 INFO L87 Difference]: Start difference. First operand 35196 states and 187476 transitions. Second operand 11 states. [2020-09-17 01:43:43,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:43:43,604 INFO L93 Difference]: Finished difference Result 119264 states and 544110 transitions. [2020-09-17 01:43:43,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:43:43,605 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-17 01:43:43,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:43:44,685 INFO L225 Difference]: With dead ends: 119264 [2020-09-17 01:43:44,686 INFO L226 Difference]: Without dead ends: 119224 [2020-09-17 01:43:44,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-17 01:43:45,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119224 states. [2020-09-17 01:43:47,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119224 to 34815. [2020-09-17 01:43:47,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34815 states. [2020-09-17 01:43:48,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34815 states to 34815 states and 185342 transitions. [2020-09-17 01:43:48,232 INFO L78 Accepts]: Start accepts. Automaton has 34815 states and 185342 transitions. Word has length 25 [2020-09-17 01:43:48,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:43:48,232 INFO L479 AbstractCegarLoop]: Abstraction has 34815 states and 185342 transitions. [2020-09-17 01:43:48,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 01:43:48,232 INFO L276 IsEmpty]: Start isEmpty. Operand 34815 states and 185342 transitions. [2020-09-17 01:43:48,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 01:43:48,237 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:43:48,238 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:43:48,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2020-09-17 01:43:48,439 INFO L427 AbstractCegarLoop]: === Iteration 32 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:43:48,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:43:48,441 INFO L82 PathProgramCache]: Analyzing trace with hash -980827488, now seen corresponding path program 5 times [2020-09-17 01:43:48,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:43:48,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543952945] [2020-09-17 01:43:48,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:43:48,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:43:48,526 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 01:43:48,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543952945] [2020-09-17 01:43:48,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:43:48,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 01:43:48,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538444238] [2020-09-17 01:43:48,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 01:43:48,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:43:48,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 01:43:48,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 01:43:48,528 INFO L87 Difference]: Start difference. First operand 34815 states and 185342 transitions. Second operand 9 states. [2020-09-17 01:43:49,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:43:49,892 INFO L93 Difference]: Finished difference Result 119116 states and 542590 transitions. [2020-09-17 01:43:49,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:43:49,893 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 01:43:49,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:43:50,289 INFO L225 Difference]: With dead ends: 119116 [2020-09-17 01:43:50,289 INFO L226 Difference]: Without dead ends: 119086 [2020-09-17 01:43:50,290 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 01:43:51,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119086 states. [2020-09-17 01:43:55,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119086 to 34044. [2020-09-17 01:43:55,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34044 states. [2020-09-17 01:43:56,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34044 states to 34044 states and 181257 transitions. [2020-09-17 01:43:56,054 INFO L78 Accepts]: Start accepts. Automaton has 34044 states and 181257 transitions. Word has length 25 [2020-09-17 01:43:56,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:43:56,054 INFO L479 AbstractCegarLoop]: Abstraction has 34044 states and 181257 transitions. [2020-09-17 01:43:56,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 01:43:56,054 INFO L276 IsEmpty]: Start isEmpty. Operand 34044 states and 181257 transitions. [2020-09-17 01:43:56,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 01:43:56,057 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:43:56,057 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:43:56,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2020-09-17 01:43:56,057 INFO L427 AbstractCegarLoop]: === Iteration 33 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:43:56,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:43:56,058 INFO L82 PathProgramCache]: Analyzing trace with hash -980805416, now seen corresponding path program 3 times [2020-09-17 01:43:56,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:43:56,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264508200] [2020-09-17 01:43:56,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:43:56,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:43:56,141 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 01:43:56,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264508200] [2020-09-17 01:43:56,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:43:56,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 01:43:56,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421152194] [2020-09-17 01:43:56,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 01:43:56,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:43:56,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 01:43:56,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 01:43:56,143 INFO L87 Difference]: Start difference. First operand 34044 states and 181257 transitions. Second operand 9 states. [2020-09-17 01:43:57,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:43:57,654 INFO L93 Difference]: Finished difference Result 118392 states and 539774 transitions. [2020-09-17 01:43:57,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:43:57,655 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 01:43:57,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:43:58,977 INFO L225 Difference]: With dead ends: 118392 [2020-09-17 01:43:58,977 INFO L226 Difference]: Without dead ends: 118362 [2020-09-17 01:43:58,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 01:44:00,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118362 states. [2020-09-17 01:44:01,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118362 to 33530. [2020-09-17 01:44:01,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33530 states. [2020-09-17 01:44:01,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33530 states to 33530 states and 178563 transitions. [2020-09-17 01:44:01,607 INFO L78 Accepts]: Start accepts. Automaton has 33530 states and 178563 transitions. Word has length 25 [2020-09-17 01:44:01,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:44:01,607 INFO L479 AbstractCegarLoop]: Abstraction has 33530 states and 178563 transitions. [2020-09-17 01:44:01,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 01:44:01,607 INFO L276 IsEmpty]: Start isEmpty. Operand 33530 states and 178563 transitions. [2020-09-17 01:44:01,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 01:44:01,609 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:44:01,610 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:44:01,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2020-09-17 01:44:01,610 INFO L427 AbstractCegarLoop]: === Iteration 34 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:44:01,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:44:01,610 INFO L82 PathProgramCache]: Analyzing trace with hash -979488288, now seen corresponding path program 6 times [2020-09-17 01:44:01,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:44:01,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743066763] [2020-09-17 01:44:01,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:44:02,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:44:02,230 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 01:44:02,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743066763] [2020-09-17 01:44:02,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:44:02,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 01:44:02,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807091862] [2020-09-17 01:44:02,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 01:44:02,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:44:02,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 01:44:02,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 01:44:02,233 INFO L87 Difference]: Start difference. First operand 33530 states and 178563 transitions. Second operand 9 states. [2020-09-17 01:44:03,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:44:03,611 INFO L93 Difference]: Finished difference Result 116966 states and 531912 transitions. [2020-09-17 01:44:03,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:44:03,611 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 01:44:03,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:44:03,967 INFO L225 Difference]: With dead ends: 116966 [2020-09-17 01:44:03,967 INFO L226 Difference]: Without dead ends: 116926 [2020-09-17 01:44:03,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 01:44:05,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116926 states. [2020-09-17 01:44:09,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116926 to 32557. [2020-09-17 01:44:09,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32557 states. [2020-09-17 01:44:09,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32557 states to 32557 states and 173592 transitions. [2020-09-17 01:44:09,556 INFO L78 Accepts]: Start accepts. Automaton has 32557 states and 173592 transitions. Word has length 25 [2020-09-17 01:44:09,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:44:09,556 INFO L479 AbstractCegarLoop]: Abstraction has 32557 states and 173592 transitions. [2020-09-17 01:44:09,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 01:44:09,557 INFO L276 IsEmpty]: Start isEmpty. Operand 32557 states and 173592 transitions. [2020-09-17 01:44:09,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 01:44:09,559 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:44:09,559 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:44:09,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2020-09-17 01:44:09,559 INFO L427 AbstractCegarLoop]: === Iteration 35 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:44:09,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:44:09,560 INFO L82 PathProgramCache]: Analyzing trace with hash -979464821, now seen corresponding path program 3 times [2020-09-17 01:44:09,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:44:09,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817149444] [2020-09-17 01:44:09,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:44:09,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:44:09,642 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 01:44:09,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817149444] [2020-09-17 01:44:09,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:44:09,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 01:44:09,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481488487] [2020-09-17 01:44:09,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 01:44:09,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:44:09,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 01:44:09,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 01:44:09,644 INFO L87 Difference]: Start difference. First operand 32557 states and 173592 transitions. Second operand 9 states. [2020-09-17 01:44:11,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:44:11,011 INFO L93 Difference]: Finished difference Result 116421 states and 530054 transitions. [2020-09-17 01:44:11,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:44:11,012 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 01:44:11,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:44:11,444 INFO L225 Difference]: With dead ends: 116421 [2020-09-17 01:44:11,445 INFO L226 Difference]: Without dead ends: 116391 [2020-09-17 01:44:11,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 01:44:13,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116391 states. [2020-09-17 01:44:14,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116391 to 32226. [2020-09-17 01:44:14,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32226 states. [2020-09-17 01:44:14,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32226 states to 32226 states and 171898 transitions. [2020-09-17 01:44:14,650 INFO L78 Accepts]: Start accepts. Automaton has 32226 states and 171898 transitions. Word has length 25 [2020-09-17 01:44:14,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:44:14,650 INFO L479 AbstractCegarLoop]: Abstraction has 32226 states and 171898 transitions. [2020-09-17 01:44:14,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 01:44:14,650 INFO L276 IsEmpty]: Start isEmpty. Operand 32226 states and 171898 transitions. [2020-09-17 01:44:14,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 01:44:14,652 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:44:14,652 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:44:14,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2020-09-17 01:44:14,653 INFO L427 AbstractCegarLoop]: === Iteration 36 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:44:14,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:44:14,653 INFO L82 PathProgramCache]: Analyzing trace with hash -958277096, now seen corresponding path program 4 times [2020-09-17 01:44:14,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:44:14,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383088727] [2020-09-17 01:44:14,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:44:14,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:44:14,741 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 01:44:14,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383088727] [2020-09-17 01:44:14,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:44:14,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 01:44:14,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435634939] [2020-09-17 01:44:14,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 01:44:14,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:44:14,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 01:44:14,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 01:44:14,744 INFO L87 Difference]: Start difference. First operand 32226 states and 171898 transitions. Second operand 9 states. [2020-09-17 01:44:16,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:44:16,721 INFO L93 Difference]: Finished difference Result 116502 states and 530595 transitions. [2020-09-17 01:44:16,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:44:16,722 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 01:44:16,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:44:17,096 INFO L225 Difference]: With dead ends: 116502 [2020-09-17 01:44:17,096 INFO L226 Difference]: Without dead ends: 116462 [2020-09-17 01:44:17,096 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 01:44:18,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116462 states. [2020-09-17 01:44:22,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116462 to 32188. [2020-09-17 01:44:22,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32188 states. [2020-09-17 01:44:22,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32188 states to 32188 states and 171558 transitions. [2020-09-17 01:44:22,694 INFO L78 Accepts]: Start accepts. Automaton has 32188 states and 171558 transitions. Word has length 25 [2020-09-17 01:44:22,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:44:22,695 INFO L479 AbstractCegarLoop]: Abstraction has 32188 states and 171558 transitions. [2020-09-17 01:44:22,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 01:44:22,695 INFO L276 IsEmpty]: Start isEmpty. Operand 32188 states and 171558 transitions. [2020-09-17 01:44:22,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 01:44:22,698 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:44:22,698 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:44:22,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2020-09-17 01:44:22,698 INFO L427 AbstractCegarLoop]: === Iteration 37 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:44:22,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:44:22,698 INFO L82 PathProgramCache]: Analyzing trace with hash -958275701, now seen corresponding path program 4 times [2020-09-17 01:44:22,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:44:22,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143919630] [2020-09-17 01:44:22,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:44:22,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:44:22,784 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 01:44:22,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143919630] [2020-09-17 01:44:22,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:44:22,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 01:44:22,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802686426] [2020-09-17 01:44:22,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 01:44:22,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:44:22,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 01:44:22,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 01:44:22,786 INFO L87 Difference]: Start difference. First operand 32188 states and 171558 transitions. Second operand 9 states. [2020-09-17 01:44:24,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:44:24,305 INFO L93 Difference]: Finished difference Result 115555 states and 526107 transitions. [2020-09-17 01:44:24,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:44:24,306 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 01:44:24,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:44:24,690 INFO L225 Difference]: With dead ends: 115555 [2020-09-17 01:44:24,690 INFO L226 Difference]: Without dead ends: 115515 [2020-09-17 01:44:24,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 01:44:26,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115515 states. [2020-09-17 01:44:27,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115515 to 31998. [2020-09-17 01:44:27,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31998 states. [2020-09-17 01:44:27,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31998 states to 31998 states and 170450 transitions. [2020-09-17 01:44:27,892 INFO L78 Accepts]: Start accepts. Automaton has 31998 states and 170450 transitions. Word has length 25 [2020-09-17 01:44:27,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:44:27,892 INFO L479 AbstractCegarLoop]: Abstraction has 31998 states and 170450 transitions. [2020-09-17 01:44:27,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 01:44:27,892 INFO L276 IsEmpty]: Start isEmpty. Operand 31998 states and 170450 transitions. [2020-09-17 01:44:27,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 01:44:27,894 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:44:27,894 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:44:27,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2020-09-17 01:44:27,895 INFO L427 AbstractCegarLoop]: === Iteration 38 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:44:27,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:44:27,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1698987747, now seen corresponding path program 1 times [2020-09-17 01:44:27,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:44:27,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968557360] [2020-09-17 01:44:27,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:44:27,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:44:27,948 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-17 01:44:27,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968557360] [2020-09-17 01:44:27,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:44:27,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 01:44:27,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381354790] [2020-09-17 01:44:27,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 01:44:27,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:44:27,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 01:44:27,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 01:44:27,950 INFO L87 Difference]: Start difference. First operand 31998 states and 170450 transitions. Second operand 5 states. [2020-09-17 01:44:28,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:44:28,380 INFO L93 Difference]: Finished difference Result 56734 states and 290623 transitions. [2020-09-17 01:44:28,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 01:44:28,381 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-09-17 01:44:28,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:44:28,601 INFO L225 Difference]: With dead ends: 56734 [2020-09-17 01:44:28,601 INFO L226 Difference]: Without dead ends: 56671 [2020-09-17 01:44:28,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-17 01:44:29,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56671 states. [2020-09-17 01:44:30,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56671 to 40400. [2020-09-17 01:44:30,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40400 states. [2020-09-17 01:44:31,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40400 states to 40400 states and 215336 transitions. [2020-09-17 01:44:31,137 INFO L78 Accepts]: Start accepts. Automaton has 40400 states and 215336 transitions. Word has length 25 [2020-09-17 01:44:31,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:44:31,137 INFO L479 AbstractCegarLoop]: Abstraction has 40400 states and 215336 transitions. [2020-09-17 01:44:31,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 01:44:31,137 INFO L276 IsEmpty]: Start isEmpty. Operand 40400 states and 215336 transitions. [2020-09-17 01:44:31,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 01:44:31,140 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:44:31,140 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:44:31,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2020-09-17 01:44:31,140 INFO L427 AbstractCegarLoop]: === Iteration 39 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:44:31,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:44:31,140 INFO L82 PathProgramCache]: Analyzing trace with hash -670679464, now seen corresponding path program 5 times [2020-09-17 01:44:31,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:44:31,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134759369] [2020-09-17 01:44:31,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:44:31,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:44:31,225 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 01:44:31,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134759369] [2020-09-17 01:44:31,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:44:31,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 01:44:31,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55822705] [2020-09-17 01:44:31,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 01:44:31,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:44:31,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 01:44:31,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 01:44:31,229 INFO L87 Difference]: Start difference. First operand 40400 states and 215336 transitions. Second operand 9 states. [2020-09-17 01:44:32,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:44:32,781 INFO L93 Difference]: Finished difference Result 137449 states and 636138 transitions. [2020-09-17 01:44:32,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:44:32,781 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 01:44:32,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:44:34,240 INFO L225 Difference]: With dead ends: 137449 [2020-09-17 01:44:34,241 INFO L226 Difference]: Without dead ends: 137407 [2020-09-17 01:44:34,241 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 01:44:35,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137407 states. [2020-09-17 01:44:37,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137407 to 39840. [2020-09-17 01:44:37,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39840 states. [2020-09-17 01:44:41,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39840 states to 39840 states and 212294 transitions. [2020-09-17 01:44:41,616 INFO L78 Accepts]: Start accepts. Automaton has 39840 states and 212294 transitions. Word has length 25 [2020-09-17 01:44:41,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:44:41,616 INFO L479 AbstractCegarLoop]: Abstraction has 39840 states and 212294 transitions. [2020-09-17 01:44:41,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 01:44:41,616 INFO L276 IsEmpty]: Start isEmpty. Operand 39840 states and 212294 transitions. [2020-09-17 01:44:41,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 01:44:41,619 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:44:41,619 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:44:41,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2020-09-17 01:44:41,619 INFO L427 AbstractCegarLoop]: === Iteration 40 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:44:41,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:44:41,619 INFO L82 PathProgramCache]: Analyzing trace with hash -669338869, now seen corresponding path program 5 times [2020-09-17 01:44:41,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:44:41,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465867870] [2020-09-17 01:44:41,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:44:41,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:44:41,715 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 01:44:41,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465867870] [2020-09-17 01:44:41,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:44:41,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 01:44:41,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514471773] [2020-09-17 01:44:41,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 01:44:41,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:44:41,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 01:44:41,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 01:44:41,717 INFO L87 Difference]: Start difference. First operand 39840 states and 212294 transitions. Second operand 9 states. [2020-09-17 01:44:43,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:44:43,194 INFO L93 Difference]: Finished difference Result 136260 states and 629977 transitions. [2020-09-17 01:44:43,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:44:43,194 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 01:44:43,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:44:43,690 INFO L225 Difference]: With dead ends: 136260 [2020-09-17 01:44:43,690 INFO L226 Difference]: Without dead ends: 136218 [2020-09-17 01:44:43,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 01:44:45,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136218 states. [2020-09-17 01:44:47,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136218 to 39457. [2020-09-17 01:44:47,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39457 states. [2020-09-17 01:44:47,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39457 states to 39457 states and 210241 transitions. [2020-09-17 01:44:47,611 INFO L78 Accepts]: Start accepts. Automaton has 39457 states and 210241 transitions. Word has length 25 [2020-09-17 01:44:47,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:44:47,612 INFO L479 AbstractCegarLoop]: Abstraction has 39457 states and 210241 transitions. [2020-09-17 01:44:47,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 01:44:47,612 INFO L276 IsEmpty]: Start isEmpty. Operand 39457 states and 210241 transitions. [2020-09-17 01:44:47,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 01:44:47,614 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:44:47,614 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:44:47,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2020-09-17 01:44:47,615 INFO L427 AbstractCegarLoop]: === Iteration 41 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:44:47,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:44:47,615 INFO L82 PathProgramCache]: Analyzing trace with hash -684190504, now seen corresponding path program 6 times [2020-09-17 01:44:47,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:44:47,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924458655] [2020-09-17 01:44:47,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:44:47,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:44:47,702 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 01:44:47,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924458655] [2020-09-17 01:44:47,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:44:47,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 01:44:47,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457469334] [2020-09-17 01:44:47,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 01:44:47,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:44:47,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 01:44:47,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 01:44:47,704 INFO L87 Difference]: Start difference. First operand 39457 states and 210241 transitions. Second operand 9 states. [2020-09-17 01:44:49,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:44:49,976 INFO L93 Difference]: Finished difference Result 135358 states and 625465 transitions. [2020-09-17 01:44:49,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:44:49,976 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 01:44:49,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:44:50,429 INFO L225 Difference]: With dead ends: 135358 [2020-09-17 01:44:50,429 INFO L226 Difference]: Without dead ends: 135306 [2020-09-17 01:44:50,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 01:44:51,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135306 states. [2020-09-17 01:44:56,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135306 to 38674. [2020-09-17 01:44:56,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38674 states. [2020-09-17 01:44:56,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38674 states to 38674 states and 206150 transitions. [2020-09-17 01:44:56,796 INFO L78 Accepts]: Start accepts. Automaton has 38674 states and 206150 transitions. Word has length 25 [2020-09-17 01:44:56,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:44:56,796 INFO L479 AbstractCegarLoop]: Abstraction has 38674 states and 206150 transitions. [2020-09-17 01:44:56,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 01:44:56,796 INFO L276 IsEmpty]: Start isEmpty. Operand 38674 states and 206150 transitions. [2020-09-17 01:44:56,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-17 01:44:56,799 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:44:56,799 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:44:56,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2020-09-17 01:44:56,799 INFO L427 AbstractCegarLoop]: === Iteration 42 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:44:56,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:44:56,800 INFO L82 PathProgramCache]: Analyzing trace with hash -684189109, now seen corresponding path program 6 times [2020-09-17 01:44:56,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:44:56,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701995664] [2020-09-17 01:44:56,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:44:56,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:44:56,885 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 01:44:56,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701995664] [2020-09-17 01:44:56,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:44:56,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-17 01:44:56,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664082828] [2020-09-17 01:44:56,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 01:44:56,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:44:56,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 01:44:56,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-17 01:44:56,887 INFO L87 Difference]: Start difference. First operand 38674 states and 206150 transitions. Second operand 9 states. [2020-09-17 01:44:58,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:44:58,335 INFO L93 Difference]: Finished difference Result 134089 states and 619317 transitions. [2020-09-17 01:44:58,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:44:58,335 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-17 01:44:58,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:44:58,744 INFO L225 Difference]: With dead ends: 134089 [2020-09-17 01:44:58,744 INFO L226 Difference]: Without dead ends: 134037 [2020-09-17 01:44:58,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-17 01:45:00,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134037 states. [2020-09-17 01:45:02,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134037 to 37675. [2020-09-17 01:45:02,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37675 states. [2020-09-17 01:45:02,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37675 states to 37675 states and 201015 transitions. [2020-09-17 01:45:02,503 INFO L78 Accepts]: Start accepts. Automaton has 37675 states and 201015 transitions. Word has length 25 [2020-09-17 01:45:02,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:45:02,503 INFO L479 AbstractCegarLoop]: Abstraction has 37675 states and 201015 transitions. [2020-09-17 01:45:02,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 01:45:02,503 INFO L276 IsEmpty]: Start isEmpty. Operand 37675 states and 201015 transitions. [2020-09-17 01:45:02,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 01:45:02,509 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:45:02,509 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:45:02,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2020-09-17 01:45:02,509 INFO L427 AbstractCegarLoop]: === Iteration 43 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:45:02,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:45:02,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1444696671, now seen corresponding path program 1 times [2020-09-17 01:45:02,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:45:02,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118194059] [2020-09-17 01:45:02,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:45:02,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:45:02,576 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-17 01:45:02,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118194059] [2020-09-17 01:45:02,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308278400] [2020-09-17 01:45:02,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-09-17 01:45:02,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:45:02,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-17 01:45:02,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:45:02,713 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-17 01:45:02,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:45:02,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-17 01:45:02,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497117955] [2020-09-17 01:45:02,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 01:45:02,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:45:02,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 01:45:02,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-17 01:45:02,714 INFO L87 Difference]: Start difference. First operand 37675 states and 201015 transitions. Second operand 9 states. [2020-09-17 01:45:04,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:45:04,225 INFO L93 Difference]: Finished difference Result 85349 states and 414605 transitions. [2020-09-17 01:45:04,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 01:45:04,226 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-09-17 01:45:04,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:45:04,514 INFO L225 Difference]: With dead ends: 85349 [2020-09-17 01:45:04,514 INFO L226 Difference]: Without dead ends: 85301 [2020-09-17 01:45:04,514 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-17 01:45:05,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85301 states. [2020-09-17 01:45:06,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85301 to 38836. [2020-09-17 01:45:06,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38836 states. [2020-09-17 01:45:06,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38836 states to 38836 states and 206710 transitions. [2020-09-17 01:45:06,897 INFO L78 Accepts]: Start accepts. Automaton has 38836 states and 206710 transitions. Word has length 27 [2020-09-17 01:45:06,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:45:06,898 INFO L479 AbstractCegarLoop]: Abstraction has 38836 states and 206710 transitions. [2020-09-17 01:45:06,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 01:45:06,898 INFO L276 IsEmpty]: Start isEmpty. Operand 38836 states and 206710 transitions. [2020-09-17 01:45:06,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 01:45:06,902 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:45:06,902 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:45:07,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2020-09-17 01:45:07,103 INFO L427 AbstractCegarLoop]: === Iteration 44 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:45:07,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:45:07,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1707919879, now seen corresponding path program 1 times [2020-09-17 01:45:07,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:45:07,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769316477] [2020-09-17 01:45:07,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:45:07,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:45:07,212 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 01:45:07,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769316477] [2020-09-17 01:45:07,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190509337] [2020-09-17 01:45:07,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-09-17 01:45:07,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:45:07,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2020-09-17 01:45:07,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:45:07,369 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 01:45:07,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:45:07,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-09-17 01:45:07,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027159233] [2020-09-17 01:45:07,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-17 01:45:07,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:45:07,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-17 01:45:07,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-17 01:45:07,371 INFO L87 Difference]: Start difference. First operand 38836 states and 206710 transitions. Second operand 13 states. [2020-09-17 01:45:10,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:45:10,692 INFO L93 Difference]: Finished difference Result 184520 states and 806691 transitions. [2020-09-17 01:45:10,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 01:45:10,693 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-09-17 01:45:10,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:45:11,357 INFO L225 Difference]: With dead ends: 184520 [2020-09-17 01:45:11,357 INFO L226 Difference]: Without dead ends: 184502 [2020-09-17 01:45:11,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1606 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1001, Invalid=3969, Unknown=0, NotChecked=0, Total=4970 [2020-09-17 01:45:13,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184502 states. [2020-09-17 01:45:15,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184502 to 38937. [2020-09-17 01:45:15,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38937 states. [2020-09-17 01:45:20,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38937 states to 38937 states and 207195 transitions. [2020-09-17 01:45:20,814 INFO L78 Accepts]: Start accepts. Automaton has 38937 states and 207195 transitions. Word has length 27 [2020-09-17 01:45:20,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:45:20,814 INFO L479 AbstractCegarLoop]: Abstraction has 38937 states and 207195 transitions. [2020-09-17 01:45:20,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-17 01:45:20,814 INFO L276 IsEmpty]: Start isEmpty. Operand 38937 states and 207195 transitions. [2020-09-17 01:45:20,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 01:45:20,819 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:45:20,819 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:45:21,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2020-09-17 01:45:21,020 INFO L427 AbstractCegarLoop]: === Iteration 45 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:45:21,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:45:21,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1671880519, now seen corresponding path program 2 times [2020-09-17 01:45:21,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:45:21,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446725443] [2020-09-17 01:45:21,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:45:21,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:45:21,135 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 01:45:21,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446725443] [2020-09-17 01:45:21,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998398] [2020-09-17 01:45:21,136 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 [2020-09-17 01:45:21,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 01:45:21,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 01:45:21,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2020-09-17 01:45:21,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:45:21,294 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 01:45:21,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:45:21,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-09-17 01:45:21,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015875885] [2020-09-17 01:45:21,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-17 01:45:21,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:45:21,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-17 01:45:21,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-17 01:45:21,295 INFO L87 Difference]: Start difference. First operand 38937 states and 207195 transitions. Second operand 13 states. [2020-09-17 01:45:24,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:45:24,570 INFO L93 Difference]: Finished difference Result 184111 states and 804949 transitions. [2020-09-17 01:45:24,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 01:45:24,570 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-09-17 01:45:24,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:45:25,169 INFO L225 Difference]: With dead ends: 184111 [2020-09-17 01:45:25,169 INFO L226 Difference]: Without dead ends: 184087 [2020-09-17 01:45:25,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1595 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1001, Invalid=3969, Unknown=0, NotChecked=0, Total=4970 [2020-09-17 01:45:27,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184087 states. [2020-09-17 01:45:30,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184087 to 38705. [2020-09-17 01:45:30,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38705 states. [2020-09-17 01:45:30,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38705 states to 38705 states and 205959 transitions. [2020-09-17 01:45:30,492 INFO L78 Accepts]: Start accepts. Automaton has 38705 states and 205959 transitions. Word has length 27 [2020-09-17 01:45:30,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:45:30,492 INFO L479 AbstractCegarLoop]: Abstraction has 38705 states and 205959 transitions. [2020-09-17 01:45:30,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-17 01:45:30,492 INFO L276 IsEmpty]: Start isEmpty. Operand 38705 states and 205959 transitions. [2020-09-17 01:45:30,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 01:45:30,496 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:45:30,496 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:45:30,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 01:45:30,697 INFO L427 AbstractCegarLoop]: === Iteration 46 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:45:30,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:45:30,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1200868665, now seen corresponding path program 3 times [2020-09-17 01:45:30,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:45:30,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530793002] [2020-09-17 01:45:30,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:45:30,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:45:30,809 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 01:45:30,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530793002] [2020-09-17 01:45:30,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116405764] [2020-09-17 01:45:30,810 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 [2020-09-17 01:45:30,935 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-09-17 01:45:30,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 01:45:30,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2020-09-17 01:45:30,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:45:30,972 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 01:45:30,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:45:30,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-09-17 01:45:30,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379985293] [2020-09-17 01:45:30,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-17 01:45:30,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:45:30,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-17 01:45:30,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-17 01:45:30,973 INFO L87 Difference]: Start difference. First operand 38705 states and 205959 transitions. Second operand 13 states. [2020-09-17 01:45:33,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:45:33,947 INFO L93 Difference]: Finished difference Result 183485 states and 802028 transitions. [2020-09-17 01:45:33,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 01:45:33,947 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-09-17 01:45:33,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:45:34,559 INFO L225 Difference]: With dead ends: 183485 [2020-09-17 01:45:34,559 INFO L226 Difference]: Without dead ends: 183467 [2020-09-17 01:45:34,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1602 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1001, Invalid=3969, Unknown=0, NotChecked=0, Total=4970 [2020-09-17 01:45:40,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183467 states. [2020-09-17 01:45:42,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183467 to 38802. [2020-09-17 01:45:42,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38802 states. [2020-09-17 01:45:42,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38802 states to 38802 states and 206432 transitions. [2020-09-17 01:45:42,663 INFO L78 Accepts]: Start accepts. Automaton has 38802 states and 206432 transitions. Word has length 27 [2020-09-17 01:45:42,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:45:42,663 INFO L479 AbstractCegarLoop]: Abstraction has 38802 states and 206432 transitions. [2020-09-17 01:45:42,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-17 01:45:42,663 INFO L276 IsEmpty]: Start isEmpty. Operand 38802 states and 206432 transitions. [2020-09-17 01:45:42,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 01:45:42,668 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:45:42,668 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:45:42,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 01:45:42,868 INFO L427 AbstractCegarLoop]: === Iteration 47 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:45:42,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:45:42,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1222057785, now seen corresponding path program 4 times [2020-09-17 01:45:42,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:45:42,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934304812] [2020-09-17 01:45:42,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:45:42,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:45:42,983 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 01:45:42,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934304812] [2020-09-17 01:45:42,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998003224] [2020-09-17 01:45:42,984 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 01:45:43,109 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 01:45:43,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 01:45:43,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2020-09-17 01:45:43,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:45:43,142 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 01:45:43,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:45:43,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-09-17 01:45:43,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405128554] [2020-09-17 01:45:43,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-17 01:45:43,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:45:43,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-17 01:45:43,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-17 01:45:43,143 INFO L87 Difference]: Start difference. First operand 38802 states and 206432 transitions. Second operand 13 states. [2020-09-17 01:45:47,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:45:47,103 INFO L93 Difference]: Finished difference Result 183194 states and 800691 transitions. [2020-09-17 01:45:47,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 01:45:47,103 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-09-17 01:45:47,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:45:47,677 INFO L225 Difference]: With dead ends: 183194 [2020-09-17 01:45:47,678 INFO L226 Difference]: Without dead ends: 183170 [2020-09-17 01:45:47,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1607 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1001, Invalid=3969, Unknown=0, NotChecked=0, Total=4970 [2020-09-17 01:45:49,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183170 states. [2020-09-17 01:45:52,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183170 to 38578. [2020-09-17 01:45:52,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38578 states. [2020-09-17 01:45:52,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38578 states to 38578 states and 205224 transitions. [2020-09-17 01:45:52,452 INFO L78 Accepts]: Start accepts. Automaton has 38578 states and 205224 transitions. Word has length 27 [2020-09-17 01:45:52,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:45:52,452 INFO L479 AbstractCegarLoop]: Abstraction has 38578 states and 205224 transitions. [2020-09-17 01:45:52,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-17 01:45:52,452 INFO L276 IsEmpty]: Start isEmpty. Operand 38578 states and 205224 transitions. [2020-09-17 01:45:52,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 01:45:52,456 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:45:52,456 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:45:52,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,50 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 01:45:52,657 INFO L427 AbstractCegarLoop]: === Iteration 48 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:45:52,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:45:52,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1510994617, now seen corresponding path program 5 times [2020-09-17 01:45:52,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:45:52,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354990986] [2020-09-17 01:45:52,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:45:52,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:45:52,769 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 01:45:52,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354990986] [2020-09-17 01:45:52,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722572348] [2020-09-17 01:45:52,770 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 01:45:52,906 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-09-17 01:45:52,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 01:45:52,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2020-09-17 01:45:52,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:45:52,936 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 01:45:52,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:45:52,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-09-17 01:45:52,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768589222] [2020-09-17 01:45:52,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-17 01:45:52,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:45:52,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-17 01:45:52,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-17 01:45:52,938 INFO L87 Difference]: Start difference. First operand 38578 states and 205224 transitions. Second operand 13 states. [2020-09-17 01:45:56,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:45:56,794 INFO L93 Difference]: Finished difference Result 182584 states and 797818 transitions. [2020-09-17 01:45:56,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 01:45:56,795 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-09-17 01:45:56,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:45:57,342 INFO L225 Difference]: With dead ends: 182584 [2020-09-17 01:45:57,342 INFO L226 Difference]: Without dead ends: 182566 [2020-09-17 01:45:57,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1594 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1001, Invalid=3969, Unknown=0, NotChecked=0, Total=4970 [2020-09-17 01:45:59,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182566 states. [2020-09-17 01:46:05,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182566 to 38683. [2020-09-17 01:46:05,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38683 states. [2020-09-17 01:46:05,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38683 states to 38683 states and 205717 transitions. [2020-09-17 01:46:05,890 INFO L78 Accepts]: Start accepts. Automaton has 38683 states and 205717 transitions. Word has length 27 [2020-09-17 01:46:05,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:46:05,890 INFO L479 AbstractCegarLoop]: Abstraction has 38683 states and 205717 transitions. [2020-09-17 01:46:05,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-17 01:46:05,890 INFO L276 IsEmpty]: Start isEmpty. Operand 38683 states and 205717 transitions. [2020-09-17 01:46:05,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 01:46:05,894 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:46:05,894 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:46:06,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2020-09-17 01:46:06,095 INFO L427 AbstractCegarLoop]: === Iteration 49 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:46:06,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:46:06,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1496144377, now seen corresponding path program 6 times [2020-09-17 01:46:06,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:46:06,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885512092] [2020-09-17 01:46:06,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:46:06,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:46:06,199 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 01:46:06,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885512092] [2020-09-17 01:46:06,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250734293] [2020-09-17 01:46:06,200 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-09-17 01:46:06,306 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-09-17 01:46:06,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 01:46:06,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2020-09-17 01:46:06,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:46:06,339 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-17 01:46:06,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:46:06,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-09-17 01:46:06,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154650962] [2020-09-17 01:46:06,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-17 01:46:06,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:46:06,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-17 01:46:06,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-17 01:46:06,341 INFO L87 Difference]: Start difference. First operand 38683 states and 205717 transitions. Second operand 13 states. [2020-09-17 01:46:09,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:46:09,909 INFO L93 Difference]: Finished difference Result 182167 states and 796056 transitions. [2020-09-17 01:46:09,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 01:46:09,910 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-09-17 01:46:09,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:46:10,477 INFO L225 Difference]: With dead ends: 182167 [2020-09-17 01:46:10,477 INFO L226 Difference]: Without dead ends: 182139 [2020-09-17 01:46:10,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1599 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1001, Invalid=3969, Unknown=0, NotChecked=0, Total=4970 [2020-09-17 01:46:13,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182139 states. [2020-09-17 01:46:15,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182139 to 38439. [2020-09-17 01:46:15,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38439 states. [2020-09-17 01:46:15,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38439 states to 38439 states and 204452 transitions. [2020-09-17 01:46:15,700 INFO L78 Accepts]: Start accepts. Automaton has 38439 states and 204452 transitions. Word has length 27 [2020-09-17 01:46:15,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:46:15,701 INFO L479 AbstractCegarLoop]: Abstraction has 38439 states and 204452 transitions. [2020-09-17 01:46:15,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-17 01:46:15,701 INFO L276 IsEmpty]: Start isEmpty. Operand 38439 states and 204452 transitions. [2020-09-17 01:46:15,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 01:46:15,705 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:46:15,705 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:46:15,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2020-09-17 01:46:15,906 INFO L427 AbstractCegarLoop]: === Iteration 50 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:46:15,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:46:15,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1123724041, now seen corresponding path program 7 times [2020-09-17 01:46:15,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:46:15,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412534128] [2020-09-17 01:46:15,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:46:15,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:46:16,025 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 01:46:16,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412534128] [2020-09-17 01:46:16,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577699432] [2020-09-17 01:46:16,026 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 01:46:16,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:46:16,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2020-09-17 01:46:16,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:46:16,183 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 01:46:16,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:46:16,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-09-17 01:46:16,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001905012] [2020-09-17 01:46:16,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-17 01:46:16,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:46:16,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-17 01:46:16,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-17 01:46:16,184 INFO L87 Difference]: Start difference. First operand 38439 states and 204452 transitions. Second operand 13 states. [2020-09-17 01:46:22,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:46:22,257 INFO L93 Difference]: Finished difference Result 183258 states and 800935 transitions. [2020-09-17 01:46:22,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 01:46:22,258 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-09-17 01:46:22,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:46:22,876 INFO L225 Difference]: With dead ends: 183258 [2020-09-17 01:46:22,876 INFO L226 Difference]: Without dead ends: 183240 [2020-09-17 01:46:22,876 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1606 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1001, Invalid=3969, Unknown=0, NotChecked=0, Total=4970 [2020-09-17 01:46:24,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183240 states. [2020-09-17 01:46:27,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183240 to 38278. [2020-09-17 01:46:27,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38278 states. [2020-09-17 01:46:27,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38278 states to 38278 states and 203659 transitions. [2020-09-17 01:46:27,291 INFO L78 Accepts]: Start accepts. Automaton has 38278 states and 203659 transitions. Word has length 27 [2020-09-17 01:46:27,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:46:27,291 INFO L479 AbstractCegarLoop]: Abstraction has 38278 states and 203659 transitions. [2020-09-17 01:46:27,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-17 01:46:27,291 INFO L276 IsEmpty]: Start isEmpty. Operand 38278 states and 203659 transitions. [2020-09-17 01:46:27,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 01:46:27,295 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:46:27,295 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:46:27,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2020-09-17 01:46:27,496 INFO L427 AbstractCegarLoop]: === Iteration 51 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:46:27,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:46:27,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1087684681, now seen corresponding path program 8 times [2020-09-17 01:46:27,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:46:27,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986465050] [2020-09-17 01:46:27,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:46:27,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:46:27,613 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 01:46:27,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986465050] [2020-09-17 01:46:27,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560827436] [2020-09-17 01:46:27,614 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 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 01:46:27,740 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 01:46:27,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 01:46:27,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2020-09-17 01:46:27,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:46:27,772 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 01:46:27,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:46:27,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-09-17 01:46:27,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299815987] [2020-09-17 01:46:27,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-17 01:46:27,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:46:27,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-17 01:46:27,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-17 01:46:27,774 INFO L87 Difference]: Start difference. First operand 38278 states and 203659 transitions. Second operand 13 states. [2020-09-17 01:46:31,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:46:31,441 INFO L93 Difference]: Finished difference Result 182849 states and 799193 transitions. [2020-09-17 01:46:31,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 01:46:31,442 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-09-17 01:46:31,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:46:32,136 INFO L225 Difference]: With dead ends: 182849 [2020-09-17 01:46:32,137 INFO L226 Difference]: Without dead ends: 182825 [2020-09-17 01:46:32,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1594 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1001, Invalid=3969, Unknown=0, NotChecked=0, Total=4970 [2020-09-17 01:46:34,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182825 states. [2020-09-17 01:46:40,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182825 to 37884. [2020-09-17 01:46:40,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37884 states. [2020-09-17 01:46:40,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37884 states to 37884 states and 201622 transitions. [2020-09-17 01:46:40,654 INFO L78 Accepts]: Start accepts. Automaton has 37884 states and 201622 transitions. Word has length 27 [2020-09-17 01:46:40,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:46:40,655 INFO L479 AbstractCegarLoop]: Abstraction has 37884 states and 201622 transitions. [2020-09-17 01:46:40,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-17 01:46:40,655 INFO L276 IsEmpty]: Start isEmpty. Operand 37884 states and 201622 transitions. [2020-09-17 01:46:40,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 01:46:40,659 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:46:40,659 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:46:40,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2020-09-17 01:46:40,869 INFO L427 AbstractCegarLoop]: === Iteration 52 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:46:40,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:46:40,870 INFO L82 PathProgramCache]: Analyzing trace with hash 2028959203, now seen corresponding path program 9 times [2020-09-17 01:46:40,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:46:40,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821932371] [2020-09-17 01:46:40,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:46:40,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:46:40,990 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 01:46:40,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821932371] [2020-09-17 01:46:40,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416748547] [2020-09-17 01:46:40,991 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 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 01:46:41,113 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-17 01:46:41,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 01:46:41,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2020-09-17 01:46:41,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:46:41,144 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 01:46:41,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:46:41,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-09-17 01:46:41,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866672299] [2020-09-17 01:46:41,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-17 01:46:41,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:46:41,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-17 01:46:41,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-17 01:46:41,146 INFO L87 Difference]: Start difference. First operand 37884 states and 201622 transitions. Second operand 13 states. [2020-09-17 01:46:45,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:46:45,159 INFO L93 Difference]: Finished difference Result 183773 states and 803153 transitions. [2020-09-17 01:46:45,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 01:46:45,160 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-09-17 01:46:45,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:46:45,857 INFO L225 Difference]: With dead ends: 183773 [2020-09-17 01:46:45,857 INFO L226 Difference]: Without dead ends: 183755 [2020-09-17 01:46:45,857 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1612 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1001, Invalid=3969, Unknown=0, NotChecked=0, Total=4970 [2020-09-17 01:46:47,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183755 states. [2020-09-17 01:46:50,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183755 to 37981. [2020-09-17 01:46:50,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37981 states. [2020-09-17 01:46:50,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37981 states to 37981 states and 202095 transitions. [2020-09-17 01:46:50,758 INFO L78 Accepts]: Start accepts. Automaton has 37981 states and 202095 transitions. Word has length 27 [2020-09-17 01:46:50,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:46:50,759 INFO L479 AbstractCegarLoop]: Abstraction has 37981 states and 202095 transitions. [2020-09-17 01:46:50,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-17 01:46:50,759 INFO L276 IsEmpty]: Start isEmpty. Operand 37981 states and 202095 transitions. [2020-09-17 01:46:50,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 01:46:50,764 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:46:50,764 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:46:50,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2020-09-17 01:46:50,978 INFO L427 AbstractCegarLoop]: === Iteration 53 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:46:50,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:46:50,979 INFO L82 PathProgramCache]: Analyzing trace with hash 2051487523, now seen corresponding path program 10 times [2020-09-17 01:46:50,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:46:50,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005010821] [2020-09-17 01:46:50,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:46:50,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:46:51,094 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 01:46:51,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005010821] [2020-09-17 01:46:51,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406192501] [2020-09-17 01:46:51,095 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 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 01:46:51,219 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-17 01:46:51,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 01:46:51,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2020-09-17 01:46:51,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:46:51,250 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 01:46:51,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:46:51,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-09-17 01:46:51,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763784377] [2020-09-17 01:46:51,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-17 01:46:51,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:46:51,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-17 01:46:51,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-17 01:46:51,252 INFO L87 Difference]: Start difference. First operand 37981 states and 202095 transitions. Second operand 13 states. [2020-09-17 01:46:54,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:46:54,989 INFO L93 Difference]: Finished difference Result 184574 states and 806606 transitions. [2020-09-17 01:46:54,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 01:46:54,990 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-09-17 01:46:54,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:46:55,542 INFO L225 Difference]: With dead ends: 184574 [2020-09-17 01:46:55,543 INFO L226 Difference]: Without dead ends: 184550 [2020-09-17 01:46:55,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1612 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1001, Invalid=3969, Unknown=0, NotChecked=0, Total=4970 [2020-09-17 01:47:01,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184550 states. [2020-09-17 01:47:03,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184550 to 37723. [2020-09-17 01:47:03,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37723 states. [2020-09-17 01:47:03,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37723 states to 37723 states and 200669 transitions. [2020-09-17 01:47:03,513 INFO L78 Accepts]: Start accepts. Automaton has 37723 states and 200669 transitions. Word has length 27 [2020-09-17 01:47:03,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:47:03,514 INFO L479 AbstractCegarLoop]: Abstraction has 37723 states and 200669 transitions. [2020-09-17 01:47:03,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-17 01:47:03,514 INFO L276 IsEmpty]: Start isEmpty. Operand 37723 states and 200669 transitions. [2020-09-17 01:47:03,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 01:47:03,518 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:47:03,518 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:47:03,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 01:47:03,724 INFO L427 AbstractCegarLoop]: === Iteration 54 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:47:03,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:47:03,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1310776872, now seen corresponding path program 1 times [2020-09-17 01:47:03,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:47:03,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374242903] [2020-09-17 01:47:03,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:47:03,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:47:03,795 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 01:47:03,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374242903] [2020-09-17 01:47:03,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754289849] [2020-09-17 01:47:03,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 01:47:03,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:47:03,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-17 01:47:03,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:47:03,945 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 01:47:03,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:47:03,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-17 01:47:03,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630359132] [2020-09-17 01:47:03,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 01:47:03,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:47:03,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 01:47:03,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-17 01:47:03,947 INFO L87 Difference]: Start difference. First operand 37723 states and 200669 transitions. Second operand 9 states. [2020-09-17 01:47:04,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:47:04,757 INFO L93 Difference]: Finished difference Result 87418 states and 424333 transitions. [2020-09-17 01:47:04,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 01:47:04,758 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-09-17 01:47:04,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:47:05,072 INFO L225 Difference]: With dead ends: 87418 [2020-09-17 01:47:05,072 INFO L226 Difference]: Without dead ends: 87366 [2020-09-17 01:47:05,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-17 01:47:06,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87366 states. [2020-09-17 01:47:07,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87366 to 39181. [2020-09-17 01:47:07,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39181 states. [2020-09-17 01:47:08,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39181 states to 39181 states and 208301 transitions. [2020-09-17 01:47:08,099 INFO L78 Accepts]: Start accepts. Automaton has 39181 states and 208301 transitions. Word has length 27 [2020-09-17 01:47:08,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:47:08,100 INFO L479 AbstractCegarLoop]: Abstraction has 39181 states and 208301 transitions. [2020-09-17 01:47:08,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 01:47:08,100 INFO L276 IsEmpty]: Start isEmpty. Operand 39181 states and 208301 transitions. [2020-09-17 01:47:08,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 01:47:08,104 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:47:08,104 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:47:08,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2020-09-17 01:47:08,305 INFO L427 AbstractCegarLoop]: === Iteration 55 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:47:08,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:47:08,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1955882141, now seen corresponding path program 11 times [2020-09-17 01:47:08,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:47:08,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687093612] [2020-09-17 01:47:08,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:47:08,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:47:08,422 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 01:47:08,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687093612] [2020-09-17 01:47:08,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854486525] [2020-09-17 01:47:08,423 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 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 01:47:08,551 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-09-17 01:47:08,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 01:47:08,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2020-09-17 01:47:08,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:47:08,583 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 01:47:08,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:47:08,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-09-17 01:47:08,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273680794] [2020-09-17 01:47:08,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-17 01:47:08,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:47:08,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-17 01:47:08,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-17 01:47:08,585 INFO L87 Difference]: Start difference. First operand 39181 states and 208301 transitions. Second operand 13 states. [2020-09-17 01:47:12,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:47:12,383 INFO L93 Difference]: Finished difference Result 181204 states and 790360 transitions. [2020-09-17 01:47:12,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 01:47:12,383 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-09-17 01:47:12,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:47:12,952 INFO L225 Difference]: With dead ends: 181204 [2020-09-17 01:47:12,953 INFO L226 Difference]: Without dead ends: 181186 [2020-09-17 01:47:12,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1592 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1001, Invalid=3969, Unknown=0, NotChecked=0, Total=4970 [2020-09-17 01:47:14,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181186 states. [2020-09-17 01:47:17,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181186 to 39282. [2020-09-17 01:47:17,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39282 states. [2020-09-17 01:47:17,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39282 states to 39282 states and 208786 transitions. [2020-09-17 01:47:17,631 INFO L78 Accepts]: Start accepts. Automaton has 39282 states and 208786 transitions. Word has length 27 [2020-09-17 01:47:17,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:47:17,631 INFO L479 AbstractCegarLoop]: Abstraction has 39282 states and 208786 transitions. [2020-09-17 01:47:17,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-17 01:47:17,632 INFO L276 IsEmpty]: Start isEmpty. Operand 39282 states and 208786 transitions. [2020-09-17 01:47:17,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 01:47:17,636 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:47:17,636 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:47:17,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 01:47:17,837 INFO L427 AbstractCegarLoop]: === Iteration 56 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:47:17,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:47:17,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1969393181, now seen corresponding path program 12 times [2020-09-17 01:47:17,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:47:17,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450147172] [2020-09-17 01:47:17,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:47:17,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:47:17,956 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 01:47:17,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450147172] [2020-09-17 01:47:17,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021666373] [2020-09-17 01:47:17,957 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 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 01:47:18,082 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-09-17 01:47:18,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 01:47:18,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2020-09-17 01:47:18,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:47:18,113 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 01:47:18,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:47:18,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-09-17 01:47:18,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271792199] [2020-09-17 01:47:18,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-17 01:47:18,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:47:18,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-17 01:47:18,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-17 01:47:18,115 INFO L87 Difference]: Start difference. First operand 39282 states and 208786 transitions. Second operand 13 states. [2020-09-17 01:47:23,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:47:23,592 INFO L93 Difference]: Finished difference Result 181788 states and 792986 transitions. [2020-09-17 01:47:23,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 01:47:23,592 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-09-17 01:47:23,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:47:24,214 INFO L225 Difference]: With dead ends: 181788 [2020-09-17 01:47:24,214 INFO L226 Difference]: Without dead ends: 181760 [2020-09-17 01:47:24,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1606 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1001, Invalid=3969, Unknown=0, NotChecked=0, Total=4970 [2020-09-17 01:47:25,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181760 states. [2020-09-17 01:47:28,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181760 to 39046. [2020-09-17 01:47:28,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39046 states. [2020-09-17 01:47:28,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39046 states to 39046 states and 207541 transitions. [2020-09-17 01:47:28,725 INFO L78 Accepts]: Start accepts. Automaton has 39046 states and 207541 transitions. Word has length 27 [2020-09-17 01:47:28,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:47:28,726 INFO L479 AbstractCegarLoop]: Abstraction has 39046 states and 207541 transitions. [2020-09-17 01:47:28,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-17 01:47:28,726 INFO L276 IsEmpty]: Start isEmpty. Operand 39046 states and 207541 transitions. [2020-09-17 01:47:28,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 01:47:28,733 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:47:28,733 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:47:28,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable130 [2020-09-17 01:47:28,946 INFO L427 AbstractCegarLoop]: === Iteration 57 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:47:28,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:47:28,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1977356605, now seen corresponding path program 13 times [2020-09-17 01:47:28,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:47:28,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169772830] [2020-09-17 01:47:28,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:47:28,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:47:29,067 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 01:47:29,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169772830] [2020-09-17 01:47:29,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:47:29,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-17 01:47:29,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073349882] [2020-09-17 01:47:29,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 01:47:29,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:47:29,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 01:47:29,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-17 01:47:29,069 INFO L87 Difference]: Start difference. First operand 39046 states and 207541 transitions. Second operand 11 states. [2020-09-17 01:47:32,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:47:32,903 INFO L93 Difference]: Finished difference Result 182119 states and 794828 transitions. [2020-09-17 01:47:32,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 01:47:32,904 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-17 01:47:32,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:47:33,449 INFO L225 Difference]: With dead ends: 182119 [2020-09-17 01:47:33,449 INFO L226 Difference]: Without dead ends: 182101 [2020-09-17 01:47:33,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1555 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-17 01:47:35,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182101 states. [2020-09-17 01:47:38,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182101 to 38885. [2020-09-17 01:47:38,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38885 states. [2020-09-17 01:47:38,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38885 states to 38885 states and 206748 transitions. [2020-09-17 01:47:38,362 INFO L78 Accepts]: Start accepts. Automaton has 38885 states and 206748 transitions. Word has length 27 [2020-09-17 01:47:38,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:47:38,363 INFO L479 AbstractCegarLoop]: Abstraction has 38885 states and 206748 transitions. [2020-09-17 01:47:38,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 01:47:38,363 INFO L276 IsEmpty]: Start isEmpty. Operand 38885 states and 206748 transitions. [2020-09-17 01:47:38,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 01:47:38,367 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:47:38,367 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:47:38,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2020-09-17 01:47:38,367 INFO L427 AbstractCegarLoop]: === Iteration 58 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:47:38,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:47:38,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1956167485, now seen corresponding path program 14 times [2020-09-17 01:47:38,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:47:38,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644960820] [2020-09-17 01:47:38,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:47:38,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:47:38,481 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 01:47:38,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644960820] [2020-09-17 01:47:38,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:47:38,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-17 01:47:38,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031702933] [2020-09-17 01:47:38,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 01:47:38,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:47:38,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 01:47:38,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-17 01:47:38,484 INFO L87 Difference]: Start difference. First operand 38885 states and 206748 transitions. Second operand 11 states. [2020-09-17 01:47:43,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:47:43,306 INFO L93 Difference]: Finished difference Result 182770 states and 797712 transitions. [2020-09-17 01:47:43,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 01:47:43,307 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-17 01:47:43,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:47:43,894 INFO L225 Difference]: With dead ends: 182770 [2020-09-17 01:47:43,894 INFO L226 Difference]: Without dead ends: 182746 [2020-09-17 01:47:43,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1559 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-17 01:47:45,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182746 states. [2020-09-17 01:47:48,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182746 to 38499. [2020-09-17 01:47:48,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38499 states. [2020-09-17 01:47:48,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38499 states to 38499 states and 204735 transitions. [2020-09-17 01:47:48,488 INFO L78 Accepts]: Start accepts. Automaton has 38499 states and 204735 transitions. Word has length 27 [2020-09-17 01:47:48,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:47:48,488 INFO L479 AbstractCegarLoop]: Abstraction has 38499 states and 204735 transitions. [2020-09-17 01:47:48,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 01:47:48,488 INFO L276 IsEmpty]: Start isEmpty. Operand 38499 states and 204735 transitions. [2020-09-17 01:47:48,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 01:47:48,493 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:47:48,493 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:47:48,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2020-09-17 01:47:48,493 INFO L427 AbstractCegarLoop]: === Iteration 59 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:47:48,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:47:48,494 INFO L82 PathProgramCache]: Analyzing trace with hash -690385405, now seen corresponding path program 15 times [2020-09-17 01:47:48,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:47:48,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517500895] [2020-09-17 01:47:48,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:47:48,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:47:48,607 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 01:47:48,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517500895] [2020-09-17 01:47:48,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:47:48,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-17 01:47:48,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835704165] [2020-09-17 01:47:48,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 01:47:48,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:47:48,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 01:47:48,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-17 01:47:48,609 INFO L87 Difference]: Start difference. First operand 38499 states and 204735 transitions. Second operand 11 states. [2020-09-17 01:47:52,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:47:52,538 INFO L93 Difference]: Finished difference Result 181153 states and 790470 transitions. [2020-09-17 01:47:52,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 01:47:52,538 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-17 01:47:52,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:47:53,137 INFO L225 Difference]: With dead ends: 181153 [2020-09-17 01:47:53,137 INFO L226 Difference]: Without dead ends: 181135 [2020-09-17 01:47:53,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1561 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-17 01:47:54,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181135 states. [2020-09-17 01:47:57,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181135 to 38208. [2020-09-17 01:47:57,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38208 states. [2020-09-17 01:47:57,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38208 states to 38208 states and 203398 transitions. [2020-09-17 01:47:57,817 INFO L78 Accepts]: Start accepts. Automaton has 38208 states and 203398 transitions. Word has length 27 [2020-09-17 01:47:57,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:47:57,817 INFO L479 AbstractCegarLoop]: Abstraction has 38208 states and 203398 transitions. [2020-09-17 01:47:57,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 01:47:57,817 INFO L276 IsEmpty]: Start isEmpty. Operand 38208 states and 203398 transitions. [2020-09-17 01:47:57,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 01:47:57,822 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:47:57,822 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:47:57,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2020-09-17 01:47:57,822 INFO L427 AbstractCegarLoop]: === Iteration 60 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:47:57,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:47:57,822 INFO L82 PathProgramCache]: Analyzing trace with hash -667857085, now seen corresponding path program 16 times [2020-09-17 01:47:57,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:47:57,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056453063] [2020-09-17 01:47:57,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:47:57,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:47:57,939 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 01:47:57,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056453063] [2020-09-17 01:47:57,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:47:57,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-17 01:47:57,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585800222] [2020-09-17 01:47:57,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 01:47:57,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:47:57,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 01:47:57,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-17 01:47:57,941 INFO L87 Difference]: Start difference. First operand 38208 states and 203398 transitions. Second operand 11 states. [2020-09-17 01:48:03,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:48:03,519 INFO L93 Difference]: Finished difference Result 181957 states and 793915 transitions. [2020-09-17 01:48:03,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 01:48:03,520 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-17 01:48:03,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:48:04,086 INFO L225 Difference]: With dead ends: 181957 [2020-09-17 01:48:04,086 INFO L226 Difference]: Without dead ends: 181933 [2020-09-17 01:48:04,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1565 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-17 01:48:05,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181933 states. [2020-09-17 01:48:08,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181933 to 37822. [2020-09-17 01:48:08,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37822 states. [2020-09-17 01:48:08,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37822 states to 37822 states and 201385 transitions. [2020-09-17 01:48:08,462 INFO L78 Accepts]: Start accepts. Automaton has 37822 states and 201385 transitions. Word has length 27 [2020-09-17 01:48:08,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:48:08,463 INFO L479 AbstractCegarLoop]: Abstraction has 37822 states and 201385 transitions. [2020-09-17 01:48:08,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 01:48:08,463 INFO L276 IsEmpty]: Start isEmpty. Operand 37822 states and 201385 transitions. [2020-09-17 01:48:08,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 01:48:08,467 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:48:08,467 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:48:08,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2020-09-17 01:48:08,467 INFO L427 AbstractCegarLoop]: === Iteration 61 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:48:08,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:48:08,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1485355099, now seen corresponding path program 1 times [2020-09-17 01:48:08,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:48:08,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582829776] [2020-09-17 01:48:08,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:48:08,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:48:08,535 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 01:48:08,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582829776] [2020-09-17 01:48:08,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313188656] [2020-09-17 01:48:08,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 01:48:08,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:48:08,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-17 01:48:08,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:48:08,682 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 01:48:08,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:48:08,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-17 01:48:08,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898887759] [2020-09-17 01:48:08,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-17 01:48:08,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:48:08,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-17 01:48:08,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-17 01:48:08,683 INFO L87 Difference]: Start difference. First operand 37822 states and 201385 transitions. Second operand 9 states. [2020-09-17 01:48:09,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:48:09,508 INFO L93 Difference]: Finished difference Result 90020 states and 438095 transitions. [2020-09-17 01:48:09,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 01:48:09,508 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-09-17 01:48:09,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:48:09,821 INFO L225 Difference]: With dead ends: 90020 [2020-09-17 01:48:09,821 INFO L226 Difference]: Without dead ends: 89960 [2020-09-17 01:48:09,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-17 01:48:11,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89960 states. [2020-09-17 01:48:12,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89960 to 39411. [2020-09-17 01:48:12,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39411 states. [2020-09-17 01:48:13,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39411 states to 39411 states and 210063 transitions. [2020-09-17 01:48:13,124 INFO L78 Accepts]: Start accepts. Automaton has 39411 states and 210063 transitions. Word has length 27 [2020-09-17 01:48:13,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:48:13,125 INFO L479 AbstractCegarLoop]: Abstraction has 39411 states and 210063 transitions. [2020-09-17 01:48:13,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-17 01:48:13,125 INFO L276 IsEmpty]: Start isEmpty. Operand 39411 states and 210063 transitions. [2020-09-17 01:48:13,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 01:48:13,130 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:48:13,130 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:48:13,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2020-09-17 01:48:13,331 INFO L427 AbstractCegarLoop]: === Iteration 62 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:48:13,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:48:13,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1781288445, now seen corresponding path program 17 times [2020-09-17 01:48:13,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:48:13,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887109888] [2020-09-17 01:48:13,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:48:13,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:48:13,440 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 01:48:13,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887109888] [2020-09-17 01:48:13,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:48:13,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-17 01:48:13,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525580357] [2020-09-17 01:48:13,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 01:48:13,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:48:13,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 01:48:13,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-17 01:48:13,441 INFO L87 Difference]: Start difference. First operand 39411 states and 210063 transitions. Second operand 11 states. [2020-09-17 01:48:17,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:48:17,233 INFO L93 Difference]: Finished difference Result 181463 states and 790579 transitions. [2020-09-17 01:48:17,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 01:48:17,233 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-17 01:48:17,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:48:17,794 INFO L225 Difference]: With dead ends: 181463 [2020-09-17 01:48:17,794 INFO L226 Difference]: Without dead ends: 181445 [2020-09-17 01:48:17,794 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1555 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-17 01:48:19,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181445 states. [2020-09-17 01:48:22,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181445 to 39508. [2020-09-17 01:48:22,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39508 states. [2020-09-17 01:48:22,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39508 states to 39508 states and 210536 transitions. [2020-09-17 01:48:22,629 INFO L78 Accepts]: Start accepts. Automaton has 39508 states and 210536 transitions. Word has length 27 [2020-09-17 01:48:22,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:48:22,629 INFO L479 AbstractCegarLoop]: Abstraction has 39508 states and 210536 transitions. [2020-09-17 01:48:22,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 01:48:22,629 INFO L276 IsEmpty]: Start isEmpty. Operand 39508 states and 210536 transitions. [2020-09-17 01:48:22,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 01:48:22,635 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:48:22,635 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:48:22,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2020-09-17 01:48:22,635 INFO L427 AbstractCegarLoop]: === Iteration 63 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:48:22,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:48:22,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1779949245, now seen corresponding path program 18 times [2020-09-17 01:48:22,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:48:22,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030754612] [2020-09-17 01:48:22,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:48:22,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:48:22,749 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 01:48:22,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030754612] [2020-09-17 01:48:22,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:48:22,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-17 01:48:22,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313244288] [2020-09-17 01:48:22,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 01:48:22,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:48:22,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 01:48:22,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-17 01:48:22,751 INFO L87 Difference]: Start difference. First operand 39508 states and 210536 transitions. Second operand 11 states. [2020-09-17 01:48:26,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:48:26,992 INFO L93 Difference]: Finished difference Result 181054 states and 788837 transitions. [2020-09-17 01:48:26,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 01:48:26,993 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-17 01:48:26,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:48:27,623 INFO L225 Difference]: With dead ends: 181054 [2020-09-17 01:48:27,623 INFO L226 Difference]: Without dead ends: 181026 [2020-09-17 01:48:27,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1565 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-17 01:48:29,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181026 states. [2020-09-17 01:48:35,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181026 to 39280. [2020-09-17 01:48:35,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39280 states. [2020-09-17 01:48:35,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39280 states to 39280 states and 209319 transitions. [2020-09-17 01:48:35,479 INFO L78 Accepts]: Start accepts. Automaton has 39280 states and 209319 transitions. Word has length 27 [2020-09-17 01:48:35,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:48:35,479 INFO L479 AbstractCegarLoop]: Abstraction has 39280 states and 209319 transitions. [2020-09-17 01:48:35,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 01:48:35,479 INFO L276 IsEmpty]: Start isEmpty. Operand 39280 states and 209319 transitions. [2020-09-17 01:48:35,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 01:48:35,485 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:48:35,485 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:48:35,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2020-09-17 01:48:35,485 INFO L427 AbstractCegarLoop]: === Iteration 64 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:48:35,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:48:35,485 INFO L82 PathProgramCache]: Analyzing trace with hash -639654315, now seen corresponding path program 2 times [2020-09-17 01:48:35,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:48:35,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48575327] [2020-09-17 01:48:35,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:48:35,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:48:35,556 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-17 01:48:35,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48575327] [2020-09-17 01:48:35,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:48:35,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 01:48:35,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651317713] [2020-09-17 01:48:35,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 01:48:35,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:48:35,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 01:48:35,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 01:48:35,557 INFO L87 Difference]: Start difference. First operand 39280 states and 209319 transitions. Second operand 7 states. [2020-09-17 01:48:36,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:48:36,383 INFO L93 Difference]: Finished difference Result 90032 states and 438659 transitions. [2020-09-17 01:48:36,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 01:48:36,384 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-17 01:48:36,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:48:36,736 INFO L225 Difference]: With dead ends: 90032 [2020-09-17 01:48:36,736 INFO L226 Difference]: Without dead ends: 89955 [2020-09-17 01:48:36,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-17 01:48:37,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89955 states. [2020-09-17 01:48:39,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89955 to 40208. [2020-09-17 01:48:39,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40208 states. [2020-09-17 01:48:39,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40208 states to 40208 states and 214272 transitions. [2020-09-17 01:48:39,856 INFO L78 Accepts]: Start accepts. Automaton has 40208 states and 214272 transitions. Word has length 27 [2020-09-17 01:48:39,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:48:39,856 INFO L479 AbstractCegarLoop]: Abstraction has 40208 states and 214272 transitions. [2020-09-17 01:48:39,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 01:48:39,856 INFO L276 IsEmpty]: Start isEmpty. Operand 40208 states and 214272 transitions. [2020-09-17 01:48:39,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 01:48:39,862 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:48:39,862 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:48:39,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2020-09-17 01:48:39,862 INFO L427 AbstractCegarLoop]: === Iteration 65 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:48:39,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:48:39,863 INFO L82 PathProgramCache]: Analyzing trace with hash -639652920, now seen corresponding path program 2 times [2020-09-17 01:48:39,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:48:39,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694503359] [2020-09-17 01:48:39,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:48:39,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:48:39,935 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-17 01:48:39,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694503359] [2020-09-17 01:48:39,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:48:39,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 01:48:39,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140516653] [2020-09-17 01:48:39,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 01:48:39,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:48:39,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 01:48:39,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 01:48:39,937 INFO L87 Difference]: Start difference. First operand 40208 states and 214272 transitions. Second operand 7 states. [2020-09-17 01:48:40,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:48:40,758 INFO L93 Difference]: Finished difference Result 90501 states and 440366 transitions. [2020-09-17 01:48:40,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 01:48:40,759 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-17 01:48:40,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:48:41,080 INFO L225 Difference]: With dead ends: 90501 [2020-09-17 01:48:41,081 INFO L226 Difference]: Without dead ends: 90424 [2020-09-17 01:48:41,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-17 01:48:43,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90424 states. [2020-09-17 01:48:44,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90424 to 40817. [2020-09-17 01:48:44,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40817 states. [2020-09-17 01:48:44,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40817 states to 40817 states and 217501 transitions. [2020-09-17 01:48:44,392 INFO L78 Accepts]: Start accepts. Automaton has 40817 states and 217501 transitions. Word has length 27 [2020-09-17 01:48:44,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:48:44,392 INFO L479 AbstractCegarLoop]: Abstraction has 40817 states and 217501 transitions. [2020-09-17 01:48:44,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 01:48:44,393 INFO L276 IsEmpty]: Start isEmpty. Operand 40817 states and 217501 transitions. [2020-09-17 01:48:44,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 01:48:44,398 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:48:44,399 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:48:44,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2020-09-17 01:48:44,399 INFO L427 AbstractCegarLoop]: === Iteration 66 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:48:44,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:48:44,399 INFO L82 PathProgramCache]: Analyzing trace with hash -639668389, now seen corresponding path program 2 times [2020-09-17 01:48:44,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:48:44,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045300191] [2020-09-17 01:48:44,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:48:44,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:48:44,470 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-17 01:48:44,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045300191] [2020-09-17 01:48:44,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:48:44,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 01:48:44,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371192257] [2020-09-17 01:48:44,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 01:48:44,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:48:44,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 01:48:44,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 01:48:44,472 INFO L87 Difference]: Start difference. First operand 40817 states and 217501 transitions. Second operand 7 states. [2020-09-17 01:48:45,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:48:45,323 INFO L93 Difference]: Finished difference Result 91389 states and 444541 transitions. [2020-09-17 01:48:45,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 01:48:45,324 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-17 01:48:45,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:48:46,365 INFO L225 Difference]: With dead ends: 91389 [2020-09-17 01:48:46,365 INFO L226 Difference]: Without dead ends: 91312 [2020-09-17 01:48:46,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-17 01:48:47,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91312 states. [2020-09-17 01:48:48,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91312 to 41653. [2020-09-17 01:48:48,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41653 states. [2020-09-17 01:48:48,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41653 states to 41653 states and 221647 transitions. [2020-09-17 01:48:48,719 INFO L78 Accepts]: Start accepts. Automaton has 41653 states and 221647 transitions. Word has length 27 [2020-09-17 01:48:48,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:48:48,720 INFO L479 AbstractCegarLoop]: Abstraction has 41653 states and 221647 transitions. [2020-09-17 01:48:48,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 01:48:48,720 INFO L276 IsEmpty]: Start isEmpty. Operand 41653 states and 221647 transitions. [2020-09-17 01:48:48,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 01:48:48,725 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:48:48,725 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:48:48,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2020-09-17 01:48:48,726 INFO L427 AbstractCegarLoop]: === Iteration 67 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:48:48,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:48:48,726 INFO L82 PathProgramCache]: Analyzing trace with hash -639630848, now seen corresponding path program 1 times [2020-09-17 01:48:48,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:48:48,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331629490] [2020-09-17 01:48:48,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:48:48,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:48:48,792 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-17 01:48:48,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331629490] [2020-09-17 01:48:48,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:48:48,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 01:48:48,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130306811] [2020-09-17 01:48:48,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 01:48:48,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:48:48,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 01:48:48,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 01:48:48,794 INFO L87 Difference]: Start difference. First operand 41653 states and 221647 transitions. Second operand 7 states. [2020-09-17 01:48:50,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:48:50,219 INFO L93 Difference]: Finished difference Result 96066 states and 468402 transitions. [2020-09-17 01:48:50,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 01:48:50,220 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-17 01:48:50,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:48:50,588 INFO L225 Difference]: With dead ends: 96066 [2020-09-17 01:48:50,588 INFO L226 Difference]: Without dead ends: 95989 [2020-09-17 01:48:50,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-17 01:48:51,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95989 states. [2020-09-17 01:48:52,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95989 to 44034. [2020-09-17 01:48:52,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44034 states. [2020-09-17 01:48:54,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44034 states to 44034 states and 234037 transitions. [2020-09-17 01:48:54,059 INFO L78 Accepts]: Start accepts. Automaton has 44034 states and 234037 transitions. Word has length 27 [2020-09-17 01:48:54,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:48:54,059 INFO L479 AbstractCegarLoop]: Abstraction has 44034 states and 234037 transitions. [2020-09-17 01:48:54,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 01:48:54,059 INFO L276 IsEmpty]: Start isEmpty. Operand 44034 states and 234037 transitions. [2020-09-17 01:48:54,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 01:48:54,065 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:48:54,065 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:48:54,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2020-09-17 01:48:54,066 INFO L427 AbstractCegarLoop]: === Iteration 68 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:48:54,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:48:54,066 INFO L82 PathProgramCache]: Analyzing trace with hash -616120448, now seen corresponding path program 2 times [2020-09-17 01:48:54,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:48:54,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298357858] [2020-09-17 01:48:54,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:48:54,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:48:54,136 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-17 01:48:54,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298357858] [2020-09-17 01:48:54,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:48:54,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 01:48:54,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705545197] [2020-09-17 01:48:54,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 01:48:54,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:48:54,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 01:48:54,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-17 01:48:54,138 INFO L87 Difference]: Start difference. First operand 44034 states and 234037 transitions. Second operand 7 states. [2020-09-17 01:48:54,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:48:54,965 INFO L93 Difference]: Finished difference Result 97335 states and 474289 transitions. [2020-09-17 01:48:54,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-17 01:48:54,966 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-17 01:48:54,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:48:55,286 INFO L225 Difference]: With dead ends: 97335 [2020-09-17 01:48:55,287 INFO L226 Difference]: Without dead ends: 97258 [2020-09-17 01:48:55,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-17 01:48:56,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97258 states. [2020-09-17 01:48:58,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97258 to 45832. [2020-09-17 01:48:58,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45832 states. [2020-09-17 01:48:58,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45832 states to 45832 states and 243883 transitions. [2020-09-17 01:48:58,785 INFO L78 Accepts]: Start accepts. Automaton has 45832 states and 243883 transitions. Word has length 27 [2020-09-17 01:48:58,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:48:58,785 INFO L479 AbstractCegarLoop]: Abstraction has 45832 states and 243883 transitions. [2020-09-17 01:48:58,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 01:48:58,785 INFO L276 IsEmpty]: Start isEmpty. Operand 45832 states and 243883 transitions. [2020-09-17 01:48:58,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 01:48:58,792 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:48:58,792 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:48:58,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2020-09-17 01:48:58,792 INFO L427 AbstractCegarLoop]: === Iteration 69 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:48:58,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:48:58,792 INFO L82 PathProgramCache]: Analyzing trace with hash -263020797, now seen corresponding path program 19 times [2020-09-17 01:48:58,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:48:58,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210973096] [2020-09-17 01:48:58,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:48:58,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:48:58,906 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 01:48:58,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210973096] [2020-09-17 01:48:58,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:48:58,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-17 01:48:58,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578660635] [2020-09-17 01:48:58,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 01:48:58,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:48:58,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 01:48:58,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-17 01:48:58,908 INFO L87 Difference]: Start difference. First operand 45832 states and 243883 transitions. Second operand 11 states. [2020-09-17 01:49:02,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:49:02,056 INFO L93 Difference]: Finished difference Result 206462 states and 913897 transitions. [2020-09-17 01:49:02,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 01:49:02,057 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-17 01:49:02,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:49:03,948 INFO L225 Difference]: With dead ends: 206462 [2020-09-17 01:49:03,948 INFO L226 Difference]: Without dead ends: 206438 [2020-09-17 01:49:03,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1541 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-17 01:49:05,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206438 states. [2020-09-17 01:49:12,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206438 to 45730. [2020-09-17 01:49:12,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45730 states. [2020-09-17 01:49:12,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45730 states to 45730 states and 243333 transitions. [2020-09-17 01:49:12,918 INFO L78 Accepts]: Start accepts. Automaton has 45730 states and 243333 transitions. Word has length 27 [2020-09-17 01:49:12,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:49:12,918 INFO L479 AbstractCegarLoop]: Abstraction has 45730 states and 243333 transitions. [2020-09-17 01:49:12,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 01:49:12,918 INFO L276 IsEmpty]: Start isEmpty. Operand 45730 states and 243333 transitions. [2020-09-17 01:49:12,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 01:49:12,924 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:49:12,924 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:49:12,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2020-09-17 01:49:12,925 INFO L427 AbstractCegarLoop]: === Iteration 70 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:49:12,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:49:12,925 INFO L82 PathProgramCache]: Analyzing trace with hash -277871037, now seen corresponding path program 20 times [2020-09-17 01:49:12,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:49:12,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746911871] [2020-09-17 01:49:12,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:49:12,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:49:13,042 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 01:49:13,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746911871] [2020-09-17 01:49:13,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:49:13,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-17 01:49:13,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639586125] [2020-09-17 01:49:13,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 01:49:13,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:49:13,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 01:49:13,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-17 01:49:13,044 INFO L87 Difference]: Start difference. First operand 45730 states and 243333 transitions. Second operand 11 states. [2020-09-17 01:49:16,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:49:16,844 INFO L93 Difference]: Finished difference Result 205970 states and 911791 transitions. [2020-09-17 01:49:16,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 01:49:16,845 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-17 01:49:16,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:49:17,538 INFO L225 Difference]: With dead ends: 205970 [2020-09-17 01:49:17,538 INFO L226 Difference]: Without dead ends: 205940 [2020-09-17 01:49:17,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1548 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-17 01:49:19,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205940 states. [2020-09-17 01:49:22,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205940 to 45335. [2020-09-17 01:49:22,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45335 states. [2020-09-17 01:49:23,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45335 states to 45335 states and 241261 transitions. [2020-09-17 01:49:23,904 INFO L78 Accepts]: Start accepts. Automaton has 45335 states and 241261 transitions. Word has length 27 [2020-09-17 01:49:23,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:49:23,904 INFO L479 AbstractCegarLoop]: Abstraction has 45335 states and 241261 transitions. [2020-09-17 01:49:23,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 01:49:23,904 INFO L276 IsEmpty]: Start isEmpty. Operand 45335 states and 241261 transitions. [2020-09-17 01:49:23,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 01:49:23,912 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:49:23,912 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:49:23,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2020-09-17 01:49:23,912 INFO L427 AbstractCegarLoop]: === Iteration 71 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:49:23,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:49:23,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1023950403, now seen corresponding path program 21 times [2020-09-17 01:49:23,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:49:23,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511784836] [2020-09-17 01:49:23,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:49:23,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:49:24,023 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 01:49:24,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511784836] [2020-09-17 01:49:24,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:49:24,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-17 01:49:24,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688850060] [2020-09-17 01:49:24,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 01:49:24,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:49:24,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 01:49:24,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-17 01:49:24,025 INFO L87 Difference]: Start difference. First operand 45335 states and 241261 transitions. Second operand 11 states. [2020-09-17 01:49:27,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:49:27,292 INFO L93 Difference]: Finished difference Result 205404 states and 909139 transitions. [2020-09-17 01:49:27,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 01:49:27,293 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-17 01:49:27,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:49:27,974 INFO L225 Difference]: With dead ends: 205404 [2020-09-17 01:49:27,975 INFO L226 Difference]: Without dead ends: 205380 [2020-09-17 01:49:27,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1547 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-17 01:49:31,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205380 states. [2020-09-17 01:49:37,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205380 to 45076. [2020-09-17 01:49:37,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45076 states. [2020-09-17 01:49:37,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45076 states to 45076 states and 240064 transitions. [2020-09-17 01:49:37,740 INFO L78 Accepts]: Start accepts. Automaton has 45076 states and 240064 transitions. Word has length 27 [2020-09-17 01:49:37,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:49:37,740 INFO L479 AbstractCegarLoop]: Abstraction has 45076 states and 240064 transitions. [2020-09-17 01:49:37,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 01:49:37,740 INFO L276 IsEmpty]: Start isEmpty. Operand 45076 states and 240064 transitions. [2020-09-17 01:49:37,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 01:49:37,746 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:49:37,746 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:49:37,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2020-09-17 01:49:37,747 INFO L427 AbstractCegarLoop]: === Iteration 72 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:49:37,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:49:37,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1010439363, now seen corresponding path program 22 times [2020-09-17 01:49:37,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:49:37,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302182223] [2020-09-17 01:49:37,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:49:37,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:49:37,854 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 01:49:37,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302182223] [2020-09-17 01:49:37,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:49:37,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-17 01:49:37,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119887110] [2020-09-17 01:49:37,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 01:49:37,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:49:37,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 01:49:37,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-17 01:49:37,856 INFO L87 Difference]: Start difference. First operand 45076 states and 240064 transitions. Second operand 11 states. [2020-09-17 01:49:41,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:49:41,939 INFO L93 Difference]: Finished difference Result 205143 states and 907975 transitions. [2020-09-17 01:49:41,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 01:49:41,939 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-17 01:49:41,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:49:42,673 INFO L225 Difference]: With dead ends: 205143 [2020-09-17 01:49:42,673 INFO L226 Difference]: Without dead ends: 205113 [2020-09-17 01:49:42,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1562 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-17 01:49:44,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205113 states. [2020-09-17 01:49:48,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205113 to 44685. [2020-09-17 01:49:48,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44685 states. [2020-09-17 01:49:48,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44685 states to 44685 states and 238000 transitions. [2020-09-17 01:49:48,182 INFO L78 Accepts]: Start accepts. Automaton has 44685 states and 238000 transitions. Word has length 27 [2020-09-17 01:49:48,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:49:48,182 INFO L479 AbstractCegarLoop]: Abstraction has 44685 states and 238000 transitions. [2020-09-17 01:49:48,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 01:49:48,182 INFO L276 IsEmpty]: Start isEmpty. Operand 44685 states and 238000 transitions. [2020-09-17 01:49:48,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 01:49:48,188 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:49:48,188 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:49:48,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2020-09-17 01:49:48,188 INFO L427 AbstractCegarLoop]: === Iteration 73 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:49:48,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:49:48,189 INFO L82 PathProgramCache]: Analyzing trace with hash -377078589, now seen corresponding path program 23 times [2020-09-17 01:49:48,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:49:48,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207790345] [2020-09-17 01:49:48,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:49:48,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:49:48,294 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 01:49:48,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207790345] [2020-09-17 01:49:48,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:49:48,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-17 01:49:48,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909547991] [2020-09-17 01:49:48,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 01:49:48,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:49:48,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 01:49:48,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-17 01:49:48,296 INFO L87 Difference]: Start difference. First operand 44685 states and 238000 transitions. Second operand 11 states. [2020-09-17 01:49:50,868 WARN L193 SmtUtils]: Spent 633.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-09-17 01:49:52,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:49:52,126 INFO L93 Difference]: Finished difference Result 204573 states and 905311 transitions. [2020-09-17 01:49:52,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 01:49:52,126 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-17 01:49:52,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:49:52,796 INFO L225 Difference]: With dead ends: 204573 [2020-09-17 01:49:52,797 INFO L226 Difference]: Without dead ends: 204549 [2020-09-17 01:49:52,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1554 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-17 01:49:55,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204549 states. [2020-09-17 01:50:02,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204549 to 44434. [2020-09-17 01:50:02,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44434 states. [2020-09-17 01:50:02,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44434 states to 44434 states and 236823 transitions. [2020-09-17 01:50:02,373 INFO L78 Accepts]: Start accepts. Automaton has 44434 states and 236823 transitions. Word has length 27 [2020-09-17 01:50:02,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:50:02,373 INFO L479 AbstractCegarLoop]: Abstraction has 44434 states and 236823 transitions. [2020-09-17 01:50:02,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 01:50:02,373 INFO L276 IsEmpty]: Start isEmpty. Operand 44434 states and 236823 transitions. [2020-09-17 01:50:02,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 01:50:02,379 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:50:02,379 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:50:02,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2020-09-17 01:50:02,379 INFO L427 AbstractCegarLoop]: === Iteration 74 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:50:02,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:50:02,380 INFO L82 PathProgramCache]: Analyzing trace with hash -375739389, now seen corresponding path program 24 times [2020-09-17 01:50:02,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:50:02,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148378786] [2020-09-17 01:50:02,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:50:02,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:50:02,501 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-17 01:50:02,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148378786] [2020-09-17 01:50:02,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:50:02,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-17 01:50:02,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250955027] [2020-09-17 01:50:02,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 01:50:02,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:50:02,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 01:50:02,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-17 01:50:02,503 INFO L87 Difference]: Start difference. First operand 44434 states and 236823 transitions. Second operand 11 states. [2020-09-17 01:50:06,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:50:06,802 INFO L93 Difference]: Finished difference Result 204089 states and 903225 transitions. [2020-09-17 01:50:06,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-17 01:50:06,803 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-17 01:50:06,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:50:07,563 INFO L225 Difference]: With dead ends: 204089 [2020-09-17 01:50:07,563 INFO L226 Difference]: Without dead ends: 204054 [2020-09-17 01:50:07,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1564 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-17 01:50:09,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204054 states. [2020-09-17 01:50:12,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204054 to 43794. [2020-09-17 01:50:12,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43794 states. [2020-09-17 01:50:13,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43794 states to 43794 states and 233791 transitions. [2020-09-17 01:50:13,128 INFO L78 Accepts]: Start accepts. Automaton has 43794 states and 233791 transitions. Word has length 27 [2020-09-17 01:50:13,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:50:13,128 INFO L479 AbstractCegarLoop]: Abstraction has 43794 states and 233791 transitions. [2020-09-17 01:50:13,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 01:50:13,128 INFO L276 IsEmpty]: Start isEmpty. Operand 43794 states and 233791 transitions. [2020-09-17 01:50:13,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-17 01:50:13,137 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:50:13,138 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:50:13,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2020-09-17 01:50:13,138 INFO L427 AbstractCegarLoop]: === Iteration 75 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:50:13,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:50:13,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1079064756, now seen corresponding path program 1 times [2020-09-17 01:50:13,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:50:13,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74365355] [2020-09-17 01:50:13,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:50:13,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:50:13,232 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-17 01:50:13,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74365355] [2020-09-17 01:50:13,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625971306] [2020-09-17 01:50:13,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 01:50:13,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:50:13,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-17 01:50:13,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:50:13,967 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-17 01:50:13,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:50:13,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-17 01:50:13,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305307517] [2020-09-17 01:50:13,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 01:50:13,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:50:13,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 01:50:13,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-17 01:50:13,968 INFO L87 Difference]: Start difference. First operand 43794 states and 233791 transitions. Second operand 11 states. [2020-09-17 01:50:15,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:50:15,655 INFO L93 Difference]: Finished difference Result 139868 states and 649854 transitions. [2020-09-17 01:50:15,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:50:15,656 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-09-17 01:50:15,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:50:16,160 INFO L225 Difference]: With dead ends: 139868 [2020-09-17 01:50:16,160 INFO L226 Difference]: Without dead ends: 139824 [2020-09-17 01:50:16,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-17 01:50:18,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139824 states. [2020-09-17 01:50:20,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139824 to 44208. [2020-09-17 01:50:20,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44208 states. [2020-09-17 01:50:20,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44208 states to 44208 states and 235737 transitions. [2020-09-17 01:50:20,392 INFO L78 Accepts]: Start accepts. Automaton has 44208 states and 235737 transitions. Word has length 29 [2020-09-17 01:50:20,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:50:20,393 INFO L479 AbstractCegarLoop]: Abstraction has 44208 states and 235737 transitions. [2020-09-17 01:50:20,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 01:50:20,393 INFO L276 IsEmpty]: Start isEmpty. Operand 44208 states and 235737 transitions. [2020-09-17 01:50:20,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-17 01:50:20,403 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:50:20,403 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:50:20,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable149 [2020-09-17 01:50:20,605 INFO L427 AbstractCegarLoop]: === Iteration 76 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:50:20,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:50:20,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1079080225, now seen corresponding path program 1 times [2020-09-17 01:50:20,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:50:20,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805573664] [2020-09-17 01:50:20,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:50:20,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:50:20,693 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-17 01:50:20,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805573664] [2020-09-17 01:50:20,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095105324] [2020-09-17 01:50:20,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 01:50:20,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:50:20,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-17 01:50:20,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:50:20,853 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-17 01:50:20,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:50:20,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-17 01:50:20,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677479128] [2020-09-17 01:50:20,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 01:50:20,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:50:20,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 01:50:20,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-17 01:50:20,854 INFO L87 Difference]: Start difference. First operand 44208 states and 235737 transitions. Second operand 11 states. [2020-09-17 01:50:23,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:50:23,027 INFO L93 Difference]: Finished difference Result 138663 states and 644549 transitions. [2020-09-17 01:50:23,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:50:23,028 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-09-17 01:50:23,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:50:23,496 INFO L225 Difference]: With dead ends: 138663 [2020-09-17 01:50:23,497 INFO L226 Difference]: Without dead ends: 138619 [2020-09-17 01:50:23,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-17 01:50:24,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138619 states. [2020-09-17 01:50:27,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138619 to 44346. [2020-09-17 01:50:27,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44346 states. [2020-09-17 01:50:27,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44346 states to 44346 states and 236212 transitions. [2020-09-17 01:50:27,601 INFO L78 Accepts]: Start accepts. Automaton has 44346 states and 236212 transitions. Word has length 29 [2020-09-17 01:50:27,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:50:27,601 INFO L479 AbstractCegarLoop]: Abstraction has 44346 states and 236212 transitions. [2020-09-17 01:50:27,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 01:50:27,601 INFO L276 IsEmpty]: Start isEmpty. Operand 44346 states and 236212 transitions. [2020-09-17 01:50:27,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-17 01:50:27,610 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:50:27,611 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:50:27,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 01:50:27,812 INFO L427 AbstractCegarLoop]: === Iteration 77 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:50:27,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:50:27,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1079042684, now seen corresponding path program 1 times [2020-09-17 01:50:27,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:50:27,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843063276] [2020-09-17 01:50:27,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:50:27,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:50:27,905 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-17 01:50:27,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843063276] [2020-09-17 01:50:27,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295836045] [2020-09-17 01:50:27,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 01:50:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:50:28,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-17 01:50:28,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:50:28,061 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-17 01:50:28,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:50:28,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-17 01:50:28,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796569044] [2020-09-17 01:50:28,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 01:50:28,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:50:28,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 01:50:28,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-17 01:50:28,063 INFO L87 Difference]: Start difference. First operand 44346 states and 236212 transitions. Second operand 11 states. [2020-09-17 01:50:32,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:50:32,380 INFO L93 Difference]: Finished difference Result 137475 states and 638613 transitions. [2020-09-17 01:50:32,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:50:32,380 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-09-17 01:50:32,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:50:32,833 INFO L225 Difference]: With dead ends: 137475 [2020-09-17 01:50:32,833 INFO L226 Difference]: Without dead ends: 137431 [2020-09-17 01:50:32,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-17 01:50:34,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137431 states. [2020-09-17 01:50:36,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137431 to 44001. [2020-09-17 01:50:36,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44001 states. [2020-09-17 01:50:36,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44001 states to 44001 states and 234197 transitions. [2020-09-17 01:50:36,594 INFO L78 Accepts]: Start accepts. Automaton has 44001 states and 234197 transitions. Word has length 29 [2020-09-17 01:50:36,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:50:36,594 INFO L479 AbstractCegarLoop]: Abstraction has 44001 states and 234197 transitions. [2020-09-17 01:50:36,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 01:50:36,594 INFO L276 IsEmpty]: Start isEmpty. Operand 44001 states and 234197 transitions. [2020-09-17 01:50:36,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-17 01:50:36,603 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:50:36,603 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:50:36,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,63 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 01:50:36,804 INFO L427 AbstractCegarLoop]: === Iteration 78 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:50:36,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:50:36,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1076743476, now seen corresponding path program 2 times [2020-09-17 01:50:36,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:50:36,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755820897] [2020-09-17 01:50:36,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:50:36,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:50:36,894 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-17 01:50:36,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755820897] [2020-09-17 01:50:36,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396986250] [2020-09-17 01:50:36,895 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 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 01:50:37,022 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 01:50:37,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 01:50:37,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-17 01:50:37,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:50:37,050 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-17 01:50:37,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:50:37,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-17 01:50:37,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146947173] [2020-09-17 01:50:37,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 01:50:37,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:50:37,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 01:50:37,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-17 01:50:37,052 INFO L87 Difference]: Start difference. First operand 44001 states and 234197 transitions. Second operand 11 states. [2020-09-17 01:50:38,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:50:38,777 INFO L93 Difference]: Finished difference Result 137660 states and 639047 transitions. [2020-09-17 01:50:38,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:50:38,778 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-09-17 01:50:38,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:50:39,242 INFO L225 Difference]: With dead ends: 137660 [2020-09-17 01:50:39,242 INFO L226 Difference]: Without dead ends: 137614 [2020-09-17 01:50:39,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-17 01:50:41,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137614 states. [2020-09-17 01:50:43,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137614 to 43606. [2020-09-17 01:50:43,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43606 states. [2020-09-17 01:50:43,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43606 states to 43606 states and 231805 transitions. [2020-09-17 01:50:43,626 INFO L78 Accepts]: Start accepts. Automaton has 43606 states and 231805 transitions. Word has length 29 [2020-09-17 01:50:43,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:50:43,626 INFO L479 AbstractCegarLoop]: Abstraction has 43606 states and 231805 transitions. [2020-09-17 01:50:43,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 01:50:43,627 INFO L276 IsEmpty]: Start isEmpty. Operand 43606 states and 231805 transitions. [2020-09-17 01:50:43,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-17 01:50:43,635 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:50:43,635 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forcibly destroying the process [2020-09-17 01:50:44,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 01:50:44,261 INFO L427 AbstractCegarLoop]: === Iteration 79 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:50:44,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:50:44,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1091609185, now seen corresponding path program 2 times [2020-09-17 01:50:44,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:50:44,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338822418] [2020-09-17 01:50:44,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:50:44,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:50:44,361 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-17 01:50:44,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338822418] [2020-09-17 01:50:44,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524756782] [2020-09-17 01:50:44,362 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 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 01:50:44,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 01:50:44,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 01:50:44,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-17 01:50:44,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:50:44,492 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-17 01:50:44,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:50:44,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-17 01:50:44,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065786578] [2020-09-17 01:50:44,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 01:50:44,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:50:44,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 01:50:44,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-17 01:50:44,494 INFO L87 Difference]: Start difference. First operand 43606 states and 231805 transitions. Second operand 11 states. [2020-09-17 01:50:46,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:50:46,184 INFO L93 Difference]: Finished difference Result 136227 states and 631974 transitions. [2020-09-17 01:50:46,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:50:46,185 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-09-17 01:50:46,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:50:46,650 INFO L225 Difference]: With dead ends: 136227 [2020-09-17 01:50:46,650 INFO L226 Difference]: Without dead ends: 136181 [2020-09-17 01:50:46,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-17 01:50:48,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136181 states. [2020-09-17 01:50:50,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136181 to 43334. [2020-09-17 01:50:50,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43334 states. [2020-09-17 01:50:50,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43334 states to 43334 states and 230138 transitions. [2020-09-17 01:50:50,683 INFO L78 Accepts]: Start accepts. Automaton has 43334 states and 230138 transitions. Word has length 29 [2020-09-17 01:50:50,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:50:50,684 INFO L479 AbstractCegarLoop]: Abstraction has 43334 states and 230138 transitions. [2020-09-17 01:50:50,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 01:50:50,684 INFO L276 IsEmpty]: Start isEmpty. Operand 43334 states and 230138 transitions. [2020-09-17 01:50:50,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-17 01:50:50,692 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:50:50,693 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:50:50,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,65 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 01:50:50,898 INFO L427 AbstractCegarLoop]: === Iteration 80 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:50:50,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:50:50,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1055532284, now seen corresponding path program 2 times [2020-09-17 01:50:50,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:50:50,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445504252] [2020-09-17 01:50:50,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:50:50,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:50:50,987 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-17 01:50:50,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445504252] [2020-09-17 01:50:50,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038644108] [2020-09-17 01:50:50,988 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 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 01:50:51,088 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-17 01:50:51,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 01:50:51,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-17 01:50:51,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:50:51,115 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-17 01:50:51,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:50:51,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-17 01:50:51,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022377283] [2020-09-17 01:50:51,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 01:50:51,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:50:51,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 01:50:51,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-17 01:50:51,116 INFO L87 Difference]: Start difference. First operand 43334 states and 230138 transitions. Second operand 11 states. [2020-09-17 01:50:53,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:50:53,432 INFO L93 Difference]: Finished difference Result 135193 states and 626279 transitions. [2020-09-17 01:50:53,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:50:53,432 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-09-17 01:50:53,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:50:53,889 INFO L225 Difference]: With dead ends: 135193 [2020-09-17 01:50:53,889 INFO L226 Difference]: Without dead ends: 135147 [2020-09-17 01:50:53,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-17 01:50:55,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135147 states. [2020-09-17 01:50:57,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135147 to 43128. [2020-09-17 01:50:57,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43128 states. [2020-09-17 01:50:57,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43128 states to 43128 states and 228903 transitions. [2020-09-17 01:50:57,834 INFO L78 Accepts]: Start accepts. Automaton has 43128 states and 228903 transitions. Word has length 29 [2020-09-17 01:50:57,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:50:57,835 INFO L479 AbstractCegarLoop]: Abstraction has 43128 states and 228903 transitions. [2020-09-17 01:50:57,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 01:50:57,835 INFO L276 IsEmpty]: Start isEmpty. Operand 43128 states and 228903 transitions. [2020-09-17 01:50:57,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-17 01:50:57,844 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:50:57,844 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:50:58,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable154 [2020-09-17 01:50:58,045 INFO L427 AbstractCegarLoop]: === Iteration 81 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:50:58,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:50:58,045 INFO L82 PathProgramCache]: Analyzing trace with hash -233799798, now seen corresponding path program 3 times [2020-09-17 01:50:58,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:50:58,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943148010] [2020-09-17 01:50:58,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:50:58,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:50:58,138 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 01:50:58,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943148010] [2020-09-17 01:50:58,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522767187] [2020-09-17 01:50:58,139 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 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 01:50:58,265 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-09-17 01:50:58,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-17 01:50:58,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-17 01:50:58,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:50:58,296 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-17 01:50:58,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:50:58,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-17 01:50:58,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318907174] [2020-09-17 01:50:58,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 01:50:58,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:50:58,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 01:50:58,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-17 01:50:58,298 INFO L87 Difference]: Start difference. First operand 43128 states and 228903 transitions. Second operand 11 states. [2020-09-17 01:50:59,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:50:59,999 INFO L93 Difference]: Finished difference Result 135315 states and 626661 transitions. [2020-09-17 01:51:00,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:51:00,000 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-09-17 01:51:00,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:51:00,455 INFO L225 Difference]: With dead ends: 135315 [2020-09-17 01:51:00,456 INFO L226 Difference]: Without dead ends: 135271 [2020-09-17 01:51:00,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-17 01:51:02,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135271 states. [2020-09-17 01:51:04,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135271 to 42904. [2020-09-17 01:51:04,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42904 states. [2020-09-17 01:51:04,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42904 states to 42904 states and 227530 transitions. [2020-09-17 01:51:04,752 INFO L78 Accepts]: Start accepts. Automaton has 42904 states and 227530 transitions. Word has length 29 [2020-09-17 01:51:04,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:51:04,753 INFO L479 AbstractCegarLoop]: Abstraction has 42904 states and 227530 transitions. [2020-09-17 01:51:04,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-17 01:51:04,753 INFO L276 IsEmpty]: Start isEmpty. Operand 42904 states and 227530 transitions. [2020-09-17 01:51:04,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-17 01:51:04,762 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:51:04,762 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:51:04,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable155 [2020-09-17 01:51:04,963 INFO L427 AbstractCegarLoop]: === Iteration 82 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:51:04,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:51:04,963 INFO L82 PathProgramCache]: Analyzing trace with hash -938803546, now seen corresponding path program 1 times [2020-09-17 01:51:04,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:51:04,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993741442] [2020-09-17 01:51:04,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:51:04,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:51:05,057 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 01:51:05,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993741442] [2020-09-17 01:51:05,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510528160] [2020-09-17 01:51:05,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 01:51:05,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:51:05,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-17 01:51:05,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 01:51:05,210 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-17 01:51:05,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 01:51:05,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-17 01:51:05,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028342776] [2020-09-17 01:51:05,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-17 01:51:05,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:51:05,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-17 01:51:05,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-17 01:51:05,211 INFO L87 Difference]: Start difference. First operand 42904 states and 227530 transitions. Second operand 11 states. [2020-09-17 01:51:07,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:51:07,569 INFO L93 Difference]: Finished difference Result 140989 states and 654549 transitions. [2020-09-17 01:51:07,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-17 01:51:07,570 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-09-17 01:51:07,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:51:08,102 INFO L225 Difference]: With dead ends: 140989 [2020-09-17 01:51:08,102 INFO L226 Difference]: Without dead ends: 140945 [2020-09-17 01:51:08,102 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-17 01:51:09,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140945 states.