/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/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf -i ../../../trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-21 23:16:54,099 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-21 23:16:54,102 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-21 23:16:54,146 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-21 23:16:54,146 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-21 23:16:54,157 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-21 23:16:54,158 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-21 23:16:54,161 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-21 23:16:54,163 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-21 23:16:54,165 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-21 23:16:54,166 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-21 23:16:54,168 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-21 23:16:54,168 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-21 23:16:54,173 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-21 23:16:54,176 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-21 23:16:54,178 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-21 23:16:54,179 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-21 23:16:54,181 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-21 23:16:54,183 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-21 23:16:54,190 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-21 23:16:54,192 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-21 23:16:54,194 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-21 23:16:54,195 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-21 23:16:54,196 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-21 23:16:54,201 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-21 23:16:54,207 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-21 23:16:54,208 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-21 23:16:54,209 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-21 23:16:54,210 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-21 23:16:54,210 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-21 23:16:54,211 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-21 23:16:54,211 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-21 23:16:54,211 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-21 23:16:54,212 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-21 23:16:54,214 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-21 23:16:54,215 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-21 23:16:54,216 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-10-21 23:16:54,258 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-21 23:16:54,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-21 23:16:54,260 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-21 23:16:54,261 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-21 23:16:54,261 INFO L138 SettingsManager]: * Use SBE=true [2020-10-21 23:16:54,261 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-21 23:16:54,262 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-21 23:16:54,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-21 23:16:54,262 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-21 23:16:54,263 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-21 23:16:54,264 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-21 23:16:54,264 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-21 23:16:54,264 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-21 23:16:54,264 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-21 23:16:54,265 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-21 23:16:54,265 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-21 23:16:54,265 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-21 23:16:54,265 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-21 23:16:54,265 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-21 23:16:54,266 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-21 23:16:54,266 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-21 23:16:54,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-21 23:16:54,266 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-21 23:16:54,267 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-21 23:16:54,267 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-21 23:16:54,267 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-21 23:16:54,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-21 23:16:54,268 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-21 23:16:54,268 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-21 23:16:54,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-21 23:16:54,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-21 23:16:54,596 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-21 23:16:54,597 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-21 23:16:54,598 INFO L275 PluginConnector]: CDTParser initialized [2020-10-21 23:16:54,598 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-1.i [2020-10-21 23:16:54,664 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d80ab7c68/2d496fb7368c4d7e8ef73541475ee12c/FLAGa4e357263 [2020-10-21 23:16:55,189 INFO L306 CDTParser]: Found 1 translation units. [2020-10-21 23:16:55,190 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-1.i [2020-10-21 23:16:55,204 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d80ab7c68/2d496fb7368c4d7e8ef73541475ee12c/FLAGa4e357263 [2020-10-21 23:16:55,487 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d80ab7c68/2d496fb7368c4d7e8ef73541475ee12c [2020-10-21 23:16:55,496 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-21 23:16:55,503 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-21 23:16:55,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-21 23:16:55,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-21 23:16:55,508 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-21 23:16:55,509 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 11:16:55" (1/1) ... [2020-10-21 23:16:55,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58031a34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:16:55, skipping insertion in model container [2020-10-21 23:16:55,512 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 11:16:55" (1/1) ... [2020-10-21 23:16:55,520 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-21 23:16:55,558 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-21 23:16:56,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 23:16:56,063 INFO L203 MainTranslator]: Completed pre-run [2020-10-21 23:16:56,105 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 23:16:56,184 INFO L208 MainTranslator]: Completed translation [2020-10-21 23:16:56,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:16:56 WrapperNode [2020-10-21 23:16:56,185 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-21 23:16:56,186 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-21 23:16:56,186 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-21 23:16:56,186 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-21 23:16:56,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:16:56" (1/1) ... [2020-10-21 23:16:56,211 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:16:56" (1/1) ... [2020-10-21 23:16:56,236 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-21 23:16:56,236 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-21 23:16:56,236 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-21 23:16:56,236 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-21 23:16:56,246 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:16:56" (1/1) ... [2020-10-21 23:16:56,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:16:56" (1/1) ... [2020-10-21 23:16:56,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:16:56" (1/1) ... [2020-10-21 23:16:56,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:16:56" (1/1) ... [2020-10-21 23:16:56,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:16:56" (1/1) ... [2020-10-21 23:16:56,260 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:16:56" (1/1) ... [2020-10-21 23:16:56,262 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:16:56" (1/1) ... [2020-10-21 23:16:56,265 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-21 23:16:56,266 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-21 23:16:56,266 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-21 23:16:56,266 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-21 23:16:56,267 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:16:56" (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 [2020-10-21 23:16:56,343 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-21 23:16:56,343 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-21 23:16:56,343 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-21 23:16:56,343 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-21 23:16:56,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-21 23:16:56,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-21 23:16:56,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-21 23:16:56,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-21 23:16:56,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-21 23:16:56,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-21 23:16:56,346 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-21 23:16:56,752 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-21 23:16:56,753 INFO L298 CfgBuilder]: Removed 11 assume(true) statements. [2020-10-21 23:16:56,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 11:16:56 BoogieIcfgContainer [2020-10-21 23:16:56,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-21 23:16:56,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-21 23:16:56,756 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-21 23:16:56,760 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-21 23:16:56,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 11:16:55" (1/3) ... [2020-10-21 23:16:56,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3708ddd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 11:16:56, skipping insertion in model container [2020-10-21 23:16:56,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:16:56" (2/3) ... [2020-10-21 23:16:56,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3708ddd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 11:16:56, skipping insertion in model container [2020-10-21 23:16:56,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 11:16:56" (3/3) ... [2020-10-21 23:16:56,764 INFO L111 eAbstractionObserver]: Analyzing ICFG nondet-loop-bound-1.i [2020-10-21 23:16:56,777 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-21 23:16:56,777 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-21 23:16:56,784 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-21 23:16:56,785 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-21 23:16:56,812 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:56,812 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:56,813 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:56,813 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:56,813 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:56,814 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:56,814 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:56,815 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:56,815 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:56,815 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:56,816 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:56,816 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:56,816 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:56,817 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:56,817 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:56,817 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:56,818 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:56,818 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:56,818 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:56,819 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:56,819 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:56,823 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:56,823 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:56,824 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:56,824 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:56,825 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:56,835 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:56,836 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:56,836 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:56,836 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:56,836 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:56,837 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:56,837 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:56,837 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:56,839 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-21 23:16:56,854 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-21 23:16:56,877 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 23:16:56,877 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 23:16:56,877 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-21 23:16:56,877 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 23:16:56,878 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 23:16:56,878 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 23:16:56,878 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 23:16:56,878 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 23:16:56,892 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-21 23:16:56,893 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 67 transitions, 144 flow [2020-10-21 23:16:56,897 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 67 transitions, 144 flow [2020-10-21 23:16:56,899 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 69 places, 67 transitions, 144 flow [2020-10-21 23:16:56,948 INFO L129 PetriNetUnfolder]: 5/77 cut-off events. [2020-10-21 23:16:56,948 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-21 23:16:56,954 INFO L80 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 77 events. 5/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 109 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 57. Up to 4 conditions per place. [2020-10-21 23:16:56,957 INFO L116 LiptonReduction]: Number of co-enabled transitions 832 [2020-10-21 23:16:58,266 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-10-21 23:16:58,471 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2020-10-21 23:16:58,984 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 97 [2020-10-21 23:16:59,215 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 85 [2020-10-21 23:16:59,360 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-21 23:16:59,507 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-21 23:16:59,510 INFO L131 LiptonReduction]: Checked pairs total: 793 [2020-10-21 23:16:59,510 INFO L133 LiptonReduction]: Total number of compositions: 69 [2020-10-21 23:16:59,518 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 12 transitions, 34 flow [2020-10-21 23:16:59,529 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-10-21 23:16:59,531 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-21 23:16:59,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-21 23:16:59,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:16:59,537 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-21 23:16:59,538 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 23:16:59,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:16:59,542 INFO L82 PathProgramCache]: Analyzing trace with hash 270931, now seen corresponding path program 1 times [2020-10-21 23:16:59,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:16:59,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568391422] [2020-10-21 23:16:59,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:16:59,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:16:59,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:16:59,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568391422] [2020-10-21 23:16:59,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:16:59,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-21 23:16:59,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954928025] [2020-10-21 23:16:59,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 23:16:59,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:16:59,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 23:16:59,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:16:59,763 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-10-21 23:16:59,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:16:59,805 INFO L93 Difference]: Finished difference Result 35 states and 59 transitions. [2020-10-21 23:16:59,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 23:16:59,807 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-21 23:16:59,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:16:59,818 INFO L225 Difference]: With dead ends: 35 [2020-10-21 23:16:59,818 INFO L226 Difference]: Without dead ends: 31 [2020-10-21 23:16:59,820 INFO L677 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 [2020-10-21 23:16:59,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-21 23:16:59,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-21 23:16:59,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-21 23:16:59,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 51 transitions. [2020-10-21 23:16:59,861 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 51 transitions. Word has length 3 [2020-10-21 23:16:59,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:16:59,862 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 51 transitions. [2020-10-21 23:16:59,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 23:16:59,862 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 51 transitions. [2020-10-21 23:16:59,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-21 23:16:59,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:16:59,863 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:16:59,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-21 23:16:59,864 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 23:16:59,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:16:59,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1075906219, now seen corresponding path program 1 times [2020-10-21 23:16:59,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:16:59,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021978370] [2020-10-21 23:16:59,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:16:59,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:16:59,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:16:59,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021978370] [2020-10-21 23:16:59,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:16:59,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 23:16:59,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619691316] [2020-10-21 23:17:00,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 23:17:00,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:00,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 23:17:00,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-21 23:17:00,002 INFO L87 Difference]: Start difference. First operand 31 states and 51 transitions. Second operand 4 states. [2020-10-21 23:17:00,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:00,025 INFO L93 Difference]: Finished difference Result 26 states and 42 transitions. [2020-10-21 23:17:00,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-21 23:17:00,026 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-21 23:17:00,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:00,027 INFO L225 Difference]: With dead ends: 26 [2020-10-21 23:17:00,027 INFO L226 Difference]: Without dead ends: 24 [2020-10-21 23:17:00,028 INFO L677 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 [2020-10-21 23:17:00,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-21 23:17:00,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-21 23:17:00,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-21 23:17:00,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 39 transitions. [2020-10-21 23:17:00,036 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 39 transitions. Word has length 7 [2020-10-21 23:17:00,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:00,036 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 39 transitions. [2020-10-21 23:17:00,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 23:17:00,036 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 39 transitions. [2020-10-21 23:17:00,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-21 23:17:00,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:00,037 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:00,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-21 23:17:00,038 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 23:17:00,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:00,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1006649777, now seen corresponding path program 1 times [2020-10-21 23:17:00,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:00,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024426108] [2020-10-21 23:17:00,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:00,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 23:17:00,081 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 23:17:00,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 23:17:00,126 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 23:17:00,160 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-21 23:17:00,160 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-21 23:17:00,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-21 23:17:00,161 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-21 23:17:00,162 WARN L371 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-21 23:17:00,163 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-21 23:17:00,175 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,175 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,175 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,176 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,176 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,176 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,176 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,177 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,177 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,177 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,177 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,177 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,177 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,178 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,178 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,178 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,179 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,179 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,179 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,179 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,179 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,180 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,180 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,180 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,180 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,180 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,181 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,181 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,181 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,182 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,182 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,182 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,182 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,182 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,183 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,183 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,183 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,183 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,183 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,183 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,184 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,184 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,184 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,185 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,185 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,185 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,185 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,187 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,187 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,187 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,187 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,187 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,189 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,189 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,189 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,190 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,190 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,190 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,190 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,190 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,192 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,192 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,192 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,192 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,192 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,193 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,193 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,193 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:00,194 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-21 23:17:00,195 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-21 23:17:00,195 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 23:17:00,195 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 23:17:00,195 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-21 23:17:00,195 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 23:17:00,195 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 23:17:00,196 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 23:17:00,196 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 23:17:00,196 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 23:17:00,202 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-21 23:17:00,202 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 88 transitions, 200 flow [2020-10-21 23:17:00,202 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 88 transitions, 200 flow [2020-10-21 23:17:00,202 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 92 places, 88 transitions, 200 flow [2020-10-21 23:17:00,253 INFO L129 PetriNetUnfolder]: 6/98 cut-off events. [2020-10-21 23:17:00,254 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-21 23:17:00,255 INFO L80 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 98 events. 6/98 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 145 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 107. Up to 6 conditions per place. [2020-10-21 23:17:00,257 INFO L116 LiptonReduction]: Number of co-enabled transitions 1220 [2020-10-21 23:17:01,702 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-10-21 23:17:01,817 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-21 23:17:02,083 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-21 23:17:02,341 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-21 23:17:02,600 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 90 [2020-10-21 23:17:02,606 INFO L131 LiptonReduction]: Checked pairs total: 1551 [2020-10-21 23:17:02,606 INFO L133 LiptonReduction]: Total number of compositions: 86 [2020-10-21 23:17:02,606 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 66 flow [2020-10-21 23:17:02,619 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 224 states. [2020-10-21 23:17:02,619 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states. [2020-10-21 23:17:02,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-21 23:17:02,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:02,620 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-21 23:17:02,620 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:17:02,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:02,620 INFO L82 PathProgramCache]: Analyzing trace with hash 464008, now seen corresponding path program 1 times [2020-10-21 23:17:02,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:02,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751865280] [2020-10-21 23:17:02,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:02,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:02,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:17:02,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751865280] [2020-10-21 23:17:02,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:02,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-21 23:17:02,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599061807] [2020-10-21 23:17:02,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 23:17:02,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:02,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 23:17:02,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:17:02,660 INFO L87 Difference]: Start difference. First operand 224 states. Second operand 3 states. [2020-10-21 23:17:02,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:02,700 INFO L93 Difference]: Finished difference Result 185 states and 459 transitions. [2020-10-21 23:17:02,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 23:17:02,702 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-21 23:17:02,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:02,707 INFO L225 Difference]: With dead ends: 185 [2020-10-21 23:17:02,707 INFO L226 Difference]: Without dead ends: 171 [2020-10-21 23:17:02,708 INFO L677 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 [2020-10-21 23:17:02,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-21 23:17:02,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-10-21 23:17:02,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-21 23:17:02,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 418 transitions. [2020-10-21 23:17:02,737 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 418 transitions. Word has length 3 [2020-10-21 23:17:02,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:02,737 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 418 transitions. [2020-10-21 23:17:02,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 23:17:02,738 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 418 transitions. [2020-10-21 23:17:02,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 23:17:02,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:02,738 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:02,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-21 23:17:02,739 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:17:02,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:02,739 INFO L82 PathProgramCache]: Analyzing trace with hash 2038027130, now seen corresponding path program 1 times [2020-10-21 23:17:02,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:02,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535777628] [2020-10-21 23:17:02,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:02,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:02,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:17:02,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535777628] [2020-10-21 23:17:02,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:02,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:17:02,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569509185] [2020-10-21 23:17:02,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:17:02,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:02,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:17:02,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:17:02,796 INFO L87 Difference]: Start difference. First operand 171 states and 418 transitions. Second operand 5 states. [2020-10-21 23:17:02,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:02,890 INFO L93 Difference]: Finished difference Result 205 states and 460 transitions. [2020-10-21 23:17:02,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:17:02,892 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-21 23:17:02,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:02,896 INFO L225 Difference]: With dead ends: 205 [2020-10-21 23:17:02,896 INFO L226 Difference]: Without dead ends: 201 [2020-10-21 23:17:02,897 INFO L677 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 [2020-10-21 23:17:02,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-21 23:17:02,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 162. [2020-10-21 23:17:02,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-21 23:17:02,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 399 transitions. [2020-10-21 23:17:02,919 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 399 transitions. Word has length 9 [2020-10-21 23:17:02,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:02,919 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 399 transitions. [2020-10-21 23:17:02,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:17:02,920 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 399 transitions. [2020-10-21 23:17:02,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 23:17:02,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:02,921 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:02,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-21 23:17:02,922 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:17:02,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:02,922 INFO L82 PathProgramCache]: Analyzing trace with hash -460391635, now seen corresponding path program 1 times [2020-10-21 23:17:02,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:02,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401854322] [2020-10-21 23:17:02,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:02,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:02,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 23:17:02,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401854322] [2020-10-21 23:17:02,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:02,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:17:02,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231375917] [2020-10-21 23:17:02,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:17:02,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:02,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:17:02,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:17:02,977 INFO L87 Difference]: Start difference. First operand 162 states and 399 transitions. Second operand 5 states. [2020-10-21 23:17:03,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:03,060 INFO L93 Difference]: Finished difference Result 189 states and 423 transitions. [2020-10-21 23:17:03,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:17:03,061 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-21 23:17:03,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:03,063 INFO L225 Difference]: With dead ends: 189 [2020-10-21 23:17:03,063 INFO L226 Difference]: Without dead ends: 185 [2020-10-21 23:17:03,063 INFO L677 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 [2020-10-21 23:17:03,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-21 23:17:03,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 153. [2020-10-21 23:17:03,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-21 23:17:03,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 367 transitions. [2020-10-21 23:17:03,079 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 367 transitions. Word has length 13 [2020-10-21 23:17:03,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:03,080 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 367 transitions. [2020-10-21 23:17:03,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:17:03,081 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 367 transitions. [2020-10-21 23:17:03,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-21 23:17:03,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:03,082 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:03,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-21 23:17:03,083 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:17:03,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:03,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1390371680, now seen corresponding path program 1 times [2020-10-21 23:17:03,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:03,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146690148] [2020-10-21 23:17:03,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:03,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 23:17:03,107 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 23:17:03,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 23:17:03,139 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 23:17:03,151 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-21 23:17:03,152 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-21 23:17:03,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-21 23:17:03,153 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-21 23:17:03,154 WARN L371 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-21 23:17:03,155 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-21 23:17:03,169 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,169 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,169 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,170 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,170 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,170 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,170 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,171 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,171 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,171 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,171 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,172 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,172 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,172 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,173 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,173 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,173 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,173 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,174 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,174 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,174 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,175 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,176 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,176 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,176 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,176 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,176 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,176 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,177 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,177 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,177 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,177 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,177 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,178 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,178 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,178 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,178 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,178 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,178 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,179 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,179 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,179 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,179 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,179 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,179 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,179 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,180 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,180 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,180 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,180 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,180 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,181 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,181 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,181 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,181 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,181 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,181 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,182 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,182 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,182 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,182 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,183 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,183 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,184 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,184 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,184 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,185 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,185 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,186 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,186 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,186 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,187 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,187 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,188 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,188 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,188 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,188 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,189 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,190 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,190 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,190 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,190 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,191 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,191 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,191 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,191 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,192 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,193 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,193 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,193 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,193 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,193 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,194 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,194 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,195 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,195 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,195 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,196 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,196 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,196 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,196 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,196 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:03,198 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-21 23:17:03,198 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-21 23:17:03,198 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 23:17:03,198 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 23:17:03,199 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-21 23:17:03,199 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 23:17:03,199 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 23:17:03,201 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 23:17:03,201 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 23:17:03,201 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 23:17:03,203 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-21 23:17:03,203 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 109 transitions, 260 flow [2020-10-21 23:17:03,203 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 109 transitions, 260 flow [2020-10-21 23:17:03,204 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 115 places, 109 transitions, 260 flow [2020-10-21 23:17:03,232 INFO L129 PetriNetUnfolder]: 7/119 cut-off events. [2020-10-21 23:17:03,232 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-21 23:17:03,234 INFO L80 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 119 events. 7/119 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 186 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 133. Up to 8 conditions per place. [2020-10-21 23:17:03,237 INFO L116 LiptonReduction]: Number of co-enabled transitions 1668 [2020-10-21 23:17:05,297 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 96 [2020-10-21 23:17:05,453 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-21 23:17:05,719 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 90 [2020-10-21 23:17:05,842 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-21 23:17:05,850 INFO L131 LiptonReduction]: Checked pairs total: 2216 [2020-10-21 23:17:05,850 INFO L133 LiptonReduction]: Total number of compositions: 107 [2020-10-21 23:17:05,851 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 27 transitions, 96 flow [2020-10-21 23:17:05,880 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 683 states. [2020-10-21 23:17:05,880 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states. [2020-10-21 23:17:05,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-21 23:17:05,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:05,881 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-21 23:17:05,881 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:17:05,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:05,882 INFO L82 PathProgramCache]: Analyzing trace with hash 698655, now seen corresponding path program 1 times [2020-10-21 23:17:05,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:05,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961713361] [2020-10-21 23:17:05,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:05,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:17:05,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961713361] [2020-10-21 23:17:05,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:05,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-21 23:17:05,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299917554] [2020-10-21 23:17:05,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 23:17:05,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:05,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 23:17:05,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:17:05,914 INFO L87 Difference]: Start difference. First operand 683 states. Second operand 3 states. [2020-10-21 23:17:05,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:05,957 INFO L93 Difference]: Finished difference Result 600 states and 1886 transitions. [2020-10-21 23:17:05,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 23:17:05,958 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-21 23:17:05,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:05,964 INFO L225 Difference]: With dead ends: 600 [2020-10-21 23:17:05,964 INFO L226 Difference]: Without dead ends: 559 [2020-10-21 23:17:05,965 INFO L677 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 [2020-10-21 23:17:05,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-10-21 23:17:06,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2020-10-21 23:17:06,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-10-21 23:17:06,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 1737 transitions. [2020-10-21 23:17:06,008 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 1737 transitions. Word has length 3 [2020-10-21 23:17:06,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:06,008 INFO L481 AbstractCegarLoop]: Abstraction has 559 states and 1737 transitions. [2020-10-21 23:17:06,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 23:17:06,008 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 1737 transitions. [2020-10-21 23:17:06,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 23:17:06,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:06,009 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:06,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-21 23:17:06,010 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:17:06,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:06,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1614105147, now seen corresponding path program 1 times [2020-10-21 23:17:06,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:06,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706882866] [2020-10-21 23:17:06,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:06,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:06,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:17:06,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706882866] [2020-10-21 23:17:06,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:06,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:17:06,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302295591] [2020-10-21 23:17:06,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:17:06,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:06,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:17:06,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:17:06,062 INFO L87 Difference]: Start difference. First operand 559 states and 1737 transitions. Second operand 5 states. [2020-10-21 23:17:06,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:06,180 INFO L93 Difference]: Finished difference Result 817 states and 2317 transitions. [2020-10-21 23:17:06,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:17:06,180 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-21 23:17:06,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:06,190 INFO L225 Difference]: With dead ends: 817 [2020-10-21 23:17:06,190 INFO L226 Difference]: Without dead ends: 812 [2020-10-21 23:17:06,190 INFO L677 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 [2020-10-21 23:17:06,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-10-21 23:17:06,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 585. [2020-10-21 23:17:06,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-10-21 23:17:06,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1832 transitions. [2020-10-21 23:17:06,248 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1832 transitions. Word has length 9 [2020-10-21 23:17:06,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:06,248 INFO L481 AbstractCegarLoop]: Abstraction has 585 states and 1832 transitions. [2020-10-21 23:17:06,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:17:06,248 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1832 transitions. [2020-10-21 23:17:06,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 23:17:06,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:06,255 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:06,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-21 23:17:06,255 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:17:06,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:06,256 INFO L82 PathProgramCache]: Analyzing trace with hash 222037333, now seen corresponding path program 1 times [2020-10-21 23:17:06,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:06,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856900437] [2020-10-21 23:17:06,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:06,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:06,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 23:17:06,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856900437] [2020-10-21 23:17:06,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:06,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:17:06,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626299125] [2020-10-21 23:17:06,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:17:06,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:06,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:17:06,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:17:06,340 INFO L87 Difference]: Start difference. First operand 585 states and 1832 transitions. Second operand 5 states. [2020-10-21 23:17:06,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:06,447 INFO L93 Difference]: Finished difference Result 843 states and 2406 transitions. [2020-10-21 23:17:06,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:17:06,447 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-21 23:17:06,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:06,454 INFO L225 Difference]: With dead ends: 843 [2020-10-21 23:17:06,454 INFO L226 Difference]: Without dead ends: 836 [2020-10-21 23:17:06,455 INFO L677 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 [2020-10-21 23:17:06,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2020-10-21 23:17:06,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 611. [2020-10-21 23:17:06,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-10-21 23:17:06,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1906 transitions. [2020-10-21 23:17:06,487 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1906 transitions. Word has length 13 [2020-10-21 23:17:06,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:06,487 INFO L481 AbstractCegarLoop]: Abstraction has 611 states and 1906 transitions. [2020-10-21 23:17:06,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:17:06,487 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1906 transitions. [2020-10-21 23:17:06,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-21 23:17:06,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:06,490 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:06,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-21 23:17:06,491 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:17:06,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:06,491 INFO L82 PathProgramCache]: Analyzing trace with hash -24425909, now seen corresponding path program 1 times [2020-10-21 23:17:06,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:06,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108121331] [2020-10-21 23:17:06,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:06,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:06,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:17:06,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108121331] [2020-10-21 23:17:06,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728284568] [2020-10-21 23:17:06,587 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 [2020-10-21 23:17:06,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:06,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-21 23:17:06,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:17:06,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:17:06,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:17:06,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-21 23:17:06,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322215301] [2020-10-21 23:17:06,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-21 23:17:06,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:06,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-21 23:17:06,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-21 23:17:06,769 INFO L87 Difference]: Start difference. First operand 611 states and 1906 transitions. Second operand 12 states. [2020-10-21 23:17:07,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:07,049 INFO L93 Difference]: Finished difference Result 1059 states and 2818 transitions. [2020-10-21 23:17:07,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:17:07,050 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-21 23:17:07,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:07,057 INFO L225 Difference]: With dead ends: 1059 [2020-10-21 23:17:07,057 INFO L226 Difference]: Without dead ends: 1052 [2020-10-21 23:17:07,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-21 23:17:07,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2020-10-21 23:17:07,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 591. [2020-10-21 23:17:07,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-10-21 23:17:07,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1840 transitions. [2020-10-21 23:17:07,088 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1840 transitions. Word has length 15 [2020-10-21 23:17:07,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:07,088 INFO L481 AbstractCegarLoop]: Abstraction has 591 states and 1840 transitions. [2020-10-21 23:17:07,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-21 23:17:07,088 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1840 transitions. [2020-10-21 23:17:07,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-21 23:17:07,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:07,089 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:07,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-21 23:17:07,305 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:17:07,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:07,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1370486663, now seen corresponding path program 2 times [2020-10-21 23:17:07,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:07,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874692975] [2020-10-21 23:17:07,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:07,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:07,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 23:17:07,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874692975] [2020-10-21 23:17:07,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:07,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:17:07,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855950011] [2020-10-21 23:17:07,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:17:07,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:07,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:17:07,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:17:07,388 INFO L87 Difference]: Start difference. First operand 591 states and 1840 transitions. Second operand 7 states. [2020-10-21 23:17:07,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:07,665 INFO L93 Difference]: Finished difference Result 1053 states and 2807 transitions. [2020-10-21 23:17:07,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:17:07,668 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-21 23:17:07,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:07,676 INFO L225 Difference]: With dead ends: 1053 [2020-10-21 23:17:07,676 INFO L226 Difference]: Without dead ends: 1045 [2020-10-21 23:17:07,677 INFO L677 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 [2020-10-21 23:17:07,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2020-10-21 23:17:07,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 536. [2020-10-21 23:17:07,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-10-21 23:17:07,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1688 transitions. [2020-10-21 23:17:07,702 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1688 transitions. Word has length 15 [2020-10-21 23:17:07,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:07,702 INFO L481 AbstractCegarLoop]: Abstraction has 536 states and 1688 transitions. [2020-10-21 23:17:07,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:17:07,703 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1688 transitions. [2020-10-21 23:17:07,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-21 23:17:07,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:07,704 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:07,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-21 23:17:07,704 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:17:07,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:07,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1795391144, now seen corresponding path program 1 times [2020-10-21 23:17:07,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:07,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832446829] [2020-10-21 23:17:07,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:07,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:07,784 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:17:07,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832446829] [2020-10-21 23:17:07,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:07,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:17:07,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472959516] [2020-10-21 23:17:07,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:17:07,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:07,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:17:07,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:17:07,787 INFO L87 Difference]: Start difference. First operand 536 states and 1688 transitions. Second operand 5 states. [2020-10-21 23:17:07,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:07,899 INFO L93 Difference]: Finished difference Result 736 states and 2123 transitions. [2020-10-21 23:17:07,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:17:07,900 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-21 23:17:07,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:07,906 INFO L225 Difference]: With dead ends: 736 [2020-10-21 23:17:07,906 INFO L226 Difference]: Without dead ends: 728 [2020-10-21 23:17:07,907 INFO L677 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 [2020-10-21 23:17:07,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-10-21 23:17:07,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 549. [2020-10-21 23:17:07,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2020-10-21 23:17:07,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 1684 transitions. [2020-10-21 23:17:07,929 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 1684 transitions. Word has length 17 [2020-10-21 23:17:07,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:07,929 INFO L481 AbstractCegarLoop]: Abstraction has 549 states and 1684 transitions. [2020-10-21 23:17:07,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:17:07,929 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 1684 transitions. [2020-10-21 23:17:07,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-21 23:17:07,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:07,931 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:07,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-21 23:17:07,931 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:17:07,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:07,931 INFO L82 PathProgramCache]: Analyzing trace with hash -181443140, now seen corresponding path program 1 times [2020-10-21 23:17:07,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:07,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208353534] [2020-10-21 23:17:07,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:07,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 23:17:07,944 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 23:17:07,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 23:17:07,955 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 23:17:07,963 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-21 23:17:07,963 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-21 23:17:07,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-21 23:17:07,964 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-21 23:17:07,964 WARN L371 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-21 23:17:07,965 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-21 23:17:07,978 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,978 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,978 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,978 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,978 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,978 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,979 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,979 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,979 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,979 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,979 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,979 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,980 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,980 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,980 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,980 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,980 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,980 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,981 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,981 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,981 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,981 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,981 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,981 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,981 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,982 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,982 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,982 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,982 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,982 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,983 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,983 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,983 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,983 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,983 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,983 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,983 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,984 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,984 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,984 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,984 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,984 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,985 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,985 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,985 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,985 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,985 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,985 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,986 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,986 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,986 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,986 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,986 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,986 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,986 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,987 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,987 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,987 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,987 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,987 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,987 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,988 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,988 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,988 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,988 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,988 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,988 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,989 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,989 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,989 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,989 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,989 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,989 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,990 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,990 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,990 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,990 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,990 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,990 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,990 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,991 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,991 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,991 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,991 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,992 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,992 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,992 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,992 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,992 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,994 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,994 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,994 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,994 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,995 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,996 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,996 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,996 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,996 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,997 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,998 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,998 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,998 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,999 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:07,999 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,000 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,000 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,000 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,001 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,001 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,001 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,001 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,001 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,003 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,003 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,003 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,003 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,003 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,003 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,004 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,004 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,005 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,005 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,005 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,006 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,006 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,006 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,006 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,006 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,008 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,008 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,008 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,008 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,008 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,009 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,009 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,009 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,010 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-21 23:17:08,011 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-21 23:17:08,011 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 23:17:08,011 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 23:17:08,011 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-21 23:17:08,011 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 23:17:08,011 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 23:17:08,012 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 23:17:08,012 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 23:17:08,012 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 23:17:08,014 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-21 23:17:08,014 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 138 places, 130 transitions, 324 flow [2020-10-21 23:17:08,014 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 138 places, 130 transitions, 324 flow [2020-10-21 23:17:08,014 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 138 places, 130 transitions, 324 flow [2020-10-21 23:17:08,038 INFO L129 PetriNetUnfolder]: 8/140 cut-off events. [2020-10-21 23:17:08,039 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-21 23:17:08,041 INFO L80 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 140 events. 8/140 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 235 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 160. Up to 10 conditions per place. [2020-10-21 23:17:08,045 INFO L116 LiptonReduction]: Number of co-enabled transitions 2176 [2020-10-21 23:17:09,266 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-10-21 23:17:10,109 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-10-21 23:17:10,417 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 94 [2020-10-21 23:17:10,560 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-21 23:17:10,568 INFO L131 LiptonReduction]: Checked pairs total: 3275 [2020-10-21 23:17:10,569 INFO L133 LiptonReduction]: Total number of compositions: 134 [2020-10-21 23:17:10,569 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 33 transitions, 130 flow [2020-10-21 23:17:10,707 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 2060 states. [2020-10-21 23:17:10,708 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states. [2020-10-21 23:17:10,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-21 23:17:10,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:10,708 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-21 23:17:10,708 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 23:17:10,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:10,709 INFO L82 PathProgramCache]: Analyzing trace with hash 980800, now seen corresponding path program 1 times [2020-10-21 23:17:10,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:10,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671207731] [2020-10-21 23:17:10,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:10,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:10,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:17:10,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671207731] [2020-10-21 23:17:10,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:10,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-21 23:17:10,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195666796] [2020-10-21 23:17:10,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 23:17:10,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:10,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 23:17:10,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:17:10,739 INFO L87 Difference]: Start difference. First operand 2060 states. Second operand 3 states. [2020-10-21 23:17:10,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:10,782 INFO L93 Difference]: Finished difference Result 1889 states and 7217 transitions. [2020-10-21 23:17:10,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 23:17:10,783 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-21 23:17:10,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:10,798 INFO L225 Difference]: With dead ends: 1889 [2020-10-21 23:17:10,799 INFO L226 Difference]: Without dead ends: 1767 [2020-10-21 23:17:10,799 INFO L677 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 [2020-10-21 23:17:10,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2020-10-21 23:17:10,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1767. [2020-10-21 23:17:10,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1767 states. [2020-10-21 23:17:10,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 6690 transitions. [2020-10-21 23:17:10,880 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 6690 transitions. Word has length 3 [2020-10-21 23:17:10,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:10,880 INFO L481 AbstractCegarLoop]: Abstraction has 1767 states and 6690 transitions. [2020-10-21 23:17:10,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 23:17:10,881 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 6690 transitions. [2020-10-21 23:17:10,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 23:17:10,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:10,881 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:10,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-21 23:17:10,882 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 23:17:10,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:10,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1761952613, now seen corresponding path program 1 times [2020-10-21 23:17:10,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:10,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727482186] [2020-10-21 23:17:10,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:10,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:10,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:17:10,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727482186] [2020-10-21 23:17:10,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:10,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:17:10,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650609798] [2020-10-21 23:17:10,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:17:10,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:10,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:17:10,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:17:10,923 INFO L87 Difference]: Start difference. First operand 1767 states and 6690 transitions. Second operand 5 states. [2020-10-21 23:17:11,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:11,017 INFO L93 Difference]: Finished difference Result 2905 states and 10138 transitions. [2020-10-21 23:17:11,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:17:11,018 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-21 23:17:11,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:11,041 INFO L225 Difference]: With dead ends: 2905 [2020-10-21 23:17:11,041 INFO L226 Difference]: Without dead ends: 2899 [2020-10-21 23:17:11,042 INFO L677 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 [2020-10-21 23:17:11,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-10-21 23:17:11,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1966. [2020-10-21 23:17:11,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1966 states. [2020-10-21 23:17:11,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 7503 transitions. [2020-10-21 23:17:11,143 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 7503 transitions. Word has length 9 [2020-10-21 23:17:11,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:11,143 INFO L481 AbstractCegarLoop]: Abstraction has 1966 states and 7503 transitions. [2020-10-21 23:17:11,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:17:11,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 7503 transitions. [2020-10-21 23:17:11,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 23:17:11,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:11,144 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:11,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-21 23:17:11,144 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 23:17:11,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:11,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1954545134, now seen corresponding path program 1 times [2020-10-21 23:17:11,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:11,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853758444] [2020-10-21 23:17:11,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:11,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:11,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 23:17:11,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853758444] [2020-10-21 23:17:11,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:11,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:17:11,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308280228] [2020-10-21 23:17:11,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:17:11,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:11,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:17:11,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:17:11,193 INFO L87 Difference]: Start difference. First operand 1966 states and 7503 transitions. Second operand 5 states. [2020-10-21 23:17:11,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:11,307 INFO L93 Difference]: Finished difference Result 3204 states and 11312 transitions. [2020-10-21 23:17:11,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:17:11,307 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-21 23:17:11,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:11,343 INFO L225 Difference]: With dead ends: 3204 [2020-10-21 23:17:11,343 INFO L226 Difference]: Without dead ends: 3194 [2020-10-21 23:17:11,344 INFO L677 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 [2020-10-21 23:17:11,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2020-10-21 23:17:11,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 2200. [2020-10-21 23:17:11,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2020-10-21 23:17:11,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 8453 transitions. [2020-10-21 23:17:11,448 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 8453 transitions. Word has length 13 [2020-10-21 23:17:11,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:11,450 INFO L481 AbstractCegarLoop]: Abstraction has 2200 states and 8453 transitions. [2020-10-21 23:17:11,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:17:11,450 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 8453 transitions. [2020-10-21 23:17:11,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-21 23:17:11,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:11,451 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:11,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-21 23:17:11,452 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 23:17:11,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:11,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1417153478, now seen corresponding path program 1 times [2020-10-21 23:17:11,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:11,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464318636] [2020-10-21 23:17:11,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:11,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:11,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 23:17:11,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464318636] [2020-10-21 23:17:11,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:11,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:17:11,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50231143] [2020-10-21 23:17:11,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:17:11,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:11,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:17:11,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:17:11,515 INFO L87 Difference]: Start difference. First operand 2200 states and 8453 transitions. Second operand 7 states. [2020-10-21 23:17:11,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:11,824 INFO L93 Difference]: Finished difference Result 4556 states and 14911 transitions. [2020-10-21 23:17:11,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:17:11,825 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-21 23:17:11,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:11,844 INFO L225 Difference]: With dead ends: 4556 [2020-10-21 23:17:11,844 INFO L226 Difference]: Without dead ends: 4546 [2020-10-21 23:17:11,845 INFO L677 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 [2020-10-21 23:17:11,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4546 states. [2020-10-21 23:17:11,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4546 to 2157. [2020-10-21 23:17:11,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2157 states. [2020-10-21 23:17:11,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2157 states to 2157 states and 8278 transitions. [2020-10-21 23:17:11,954 INFO L78 Accepts]: Start accepts. Automaton has 2157 states and 8278 transitions. Word has length 15 [2020-10-21 23:17:11,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:11,954 INFO L481 AbstractCegarLoop]: Abstraction has 2157 states and 8278 transitions. [2020-10-21 23:17:11,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:17:11,955 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 8278 transitions. [2020-10-21 23:17:11,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-21 23:17:11,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:11,955 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:11,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-21 23:17:11,956 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 23:17:11,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:11,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1419653318, now seen corresponding path program 2 times [2020-10-21 23:17:11,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:11,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014147170] [2020-10-21 23:17:11,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:11,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:12,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 23:17:12,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014147170] [2020-10-21 23:17:12,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:12,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:17:12,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879996540] [2020-10-21 23:17:12,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:17:12,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:12,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:17:12,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:17:12,016 INFO L87 Difference]: Start difference. First operand 2157 states and 8278 transitions. Second operand 7 states. [2020-10-21 23:17:12,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:12,314 INFO L93 Difference]: Finished difference Result 4612 states and 15111 transitions. [2020-10-21 23:17:12,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:17:12,315 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-21 23:17:12,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:12,332 INFO L225 Difference]: With dead ends: 4612 [2020-10-21 23:17:12,333 INFO L226 Difference]: Without dead ends: 4601 [2020-10-21 23:17:12,333 INFO L677 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 [2020-10-21 23:17:12,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2020-10-21 23:17:12,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 2035. [2020-10-21 23:17:12,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2035 states. [2020-10-21 23:17:12,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 7845 transitions. [2020-10-21 23:17:12,443 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 7845 transitions. Word has length 15 [2020-10-21 23:17:12,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:12,443 INFO L481 AbstractCegarLoop]: Abstraction has 2035 states and 7845 transitions. [2020-10-21 23:17:12,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:17:12,443 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 7845 transitions. [2020-10-21 23:17:12,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-21 23:17:12,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:12,445 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:12,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-21 23:17:12,445 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 23:17:12,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:12,445 INFO L82 PathProgramCache]: Analyzing trace with hash 795193170, now seen corresponding path program 1 times [2020-10-21 23:17:12,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:12,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993240268] [2020-10-21 23:17:12,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:12,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:12,498 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:17:12,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993240268] [2020-10-21 23:17:12,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:12,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:17:12,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378124712] [2020-10-21 23:17:12,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:17:12,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:12,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:17:12,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:17:12,501 INFO L87 Difference]: Start difference. First operand 2035 states and 7845 transitions. Second operand 5 states. [2020-10-21 23:17:12,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:12,610 INFO L93 Difference]: Finished difference Result 3265 states and 11681 transitions. [2020-10-21 23:17:12,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:17:12,610 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-21 23:17:12,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:12,624 INFO L225 Difference]: With dead ends: 3265 [2020-10-21 23:17:12,624 INFO L226 Difference]: Without dead ends: 3250 [2020-10-21 23:17:12,625 INFO L677 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 [2020-10-21 23:17:12,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3250 states. [2020-10-21 23:17:12,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3250 to 2281. [2020-10-21 23:17:12,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2281 states. [2020-10-21 23:17:12,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 8755 transitions. [2020-10-21 23:17:12,714 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 8755 transitions. Word has length 17 [2020-10-21 23:17:12,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:12,714 INFO L481 AbstractCegarLoop]: Abstraction has 2281 states and 8755 transitions. [2020-10-21 23:17:12,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:17:12,715 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 8755 transitions. [2020-10-21 23:17:12,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 23:17:12,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:12,716 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:12,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-21 23:17:12,716 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 23:17:12,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:12,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1006706982, now seen corresponding path program 1 times [2020-10-21 23:17:12,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:12,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072378141] [2020-10-21 23:17:12,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:12,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:12,837 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 23:17:12,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072378141] [2020-10-21 23:17:12,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976672159] [2020-10-21 23:17:12,838 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 [2020-10-21 23:17:12,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:12,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-21 23:17:12,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:17:12,982 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 23:17:12,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:17:12,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-21 23:17:12,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540236161] [2020-10-21 23:17:12,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-21 23:17:12,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:12,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-21 23:17:12,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-21 23:17:12,984 INFO L87 Difference]: Start difference. First operand 2281 states and 8755 transitions. Second operand 12 states. [2020-10-21 23:17:13,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:13,292 INFO L93 Difference]: Finished difference Result 4825 states and 15986 transitions. [2020-10-21 23:17:13,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:17:13,292 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-21 23:17:13,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:13,310 INFO L225 Difference]: With dead ends: 4825 [2020-10-21 23:17:13,311 INFO L226 Difference]: Without dead ends: 4813 [2020-10-21 23:17:13,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-21 23:17:13,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4813 states. [2020-10-21 23:17:13,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4813 to 2305. [2020-10-21 23:17:13,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2305 states. [2020-10-21 23:17:13,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 8815 transitions. [2020-10-21 23:17:13,424 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 8815 transitions. Word has length 19 [2020-10-21 23:17:13,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:13,426 INFO L481 AbstractCegarLoop]: Abstraction has 2305 states and 8815 transitions. [2020-10-21 23:17:13,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-21 23:17:13,427 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 8815 transitions. [2020-10-21 23:17:13,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 23:17:13,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:13,430 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:13,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:17:13,643 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 23:17:13,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:13,644 INFO L82 PathProgramCache]: Analyzing trace with hash -323556866, now seen corresponding path program 2 times [2020-10-21 23:17:13,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:13,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437449612] [2020-10-21 23:17:13,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:13,699 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:17:13,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437449612] [2020-10-21 23:17:13,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:13,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:17:13,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771906158] [2020-10-21 23:17:13,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:17:13,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:13,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:17:13,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:17:13,701 INFO L87 Difference]: Start difference. First operand 2305 states and 8815 transitions. Second operand 7 states. [2020-10-21 23:17:14,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:14,005 INFO L93 Difference]: Finished difference Result 4886 states and 16183 transitions. [2020-10-21 23:17:14,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:17:14,006 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-21 23:17:14,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:14,020 INFO L225 Difference]: With dead ends: 4886 [2020-10-21 23:17:14,020 INFO L226 Difference]: Without dead ends: 4869 [2020-10-21 23:17:14,021 INFO L677 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 [2020-10-21 23:17:14,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4869 states. [2020-10-21 23:17:14,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4869 to 2153. [2020-10-21 23:17:14,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2153 states. [2020-10-21 23:17:14,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 8255 transitions. [2020-10-21 23:17:14,128 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 8255 transitions. Word has length 19 [2020-10-21 23:17:14,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:14,128 INFO L481 AbstractCegarLoop]: Abstraction has 2153 states and 8255 transitions. [2020-10-21 23:17:14,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:17:14,128 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 8255 transitions. [2020-10-21 23:17:14,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 23:17:14,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:14,130 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:14,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-21 23:17:14,130 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 23:17:14,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:14,130 INFO L82 PathProgramCache]: Analyzing trace with hash -323554262, now seen corresponding path program 1 times [2020-10-21 23:17:14,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:14,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662808050] [2020-10-21 23:17:14,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:14,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:14,199 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:17:14,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662808050] [2020-10-21 23:17:14,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:14,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:17:14,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307262407] [2020-10-21 23:17:14,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:17:14,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:14,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:17:14,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:17:14,202 INFO L87 Difference]: Start difference. First operand 2153 states and 8255 transitions. Second operand 7 states. [2020-10-21 23:17:14,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:14,567 INFO L93 Difference]: Finished difference Result 4782 states and 15862 transitions. [2020-10-21 23:17:14,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:17:14,567 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-21 23:17:14,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:14,577 INFO L225 Difference]: With dead ends: 4782 [2020-10-21 23:17:14,578 INFO L226 Difference]: Without dead ends: 4765 [2020-10-21 23:17:14,579 INFO L677 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 [2020-10-21 23:17:14,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4765 states. [2020-10-21 23:17:14,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4765 to 2212. [2020-10-21 23:17:14,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2212 states. [2020-10-21 23:17:14,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2212 states to 2212 states and 8465 transitions. [2020-10-21 23:17:14,671 INFO L78 Accepts]: Start accepts. Automaton has 2212 states and 8465 transitions. Word has length 19 [2020-10-21 23:17:14,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:14,671 INFO L481 AbstractCegarLoop]: Abstraction has 2212 states and 8465 transitions. [2020-10-21 23:17:14,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:17:14,672 INFO L276 IsEmpty]: Start isEmpty. Operand 2212 states and 8465 transitions. [2020-10-21 23:17:14,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 23:17:14,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:14,673 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:14,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-21 23:17:14,674 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 23:17:14,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:14,674 INFO L82 PathProgramCache]: Analyzing trace with hash -307543382, now seen corresponding path program 2 times [2020-10-21 23:17:14,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:14,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749095745] [2020-10-21 23:17:14,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:14,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:14,741 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:17:14,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749095745] [2020-10-21 23:17:14,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:14,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:17:14,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203915131] [2020-10-21 23:17:14,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:17:14,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:14,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:17:14,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:17:14,743 INFO L87 Difference]: Start difference. First operand 2212 states and 8465 transitions. Second operand 7 states. [2020-10-21 23:17:15,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:15,106 INFO L93 Difference]: Finished difference Result 4774 states and 15828 transitions. [2020-10-21 23:17:15,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:17:15,106 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-21 23:17:15,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:15,120 INFO L225 Difference]: With dead ends: 4774 [2020-10-21 23:17:15,121 INFO L226 Difference]: Without dead ends: 4757 [2020-10-21 23:17:15,121 INFO L677 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 [2020-10-21 23:17:15,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4757 states. [2020-10-21 23:17:15,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4757 to 2150. [2020-10-21 23:17:15,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2150 states. [2020-10-21 23:17:15,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 8243 transitions. [2020-10-21 23:17:15,242 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 8243 transitions. Word has length 19 [2020-10-21 23:17:15,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:15,242 INFO L481 AbstractCegarLoop]: Abstraction has 2150 states and 8243 transitions. [2020-10-21 23:17:15,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:17:15,242 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 8243 transitions. [2020-10-21 23:17:15,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:17:15,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:15,244 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:15,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-21 23:17:15,244 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 23:17:15,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:15,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1077756158, now seen corresponding path program 1 times [2020-10-21 23:17:15,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:15,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289747566] [2020-10-21 23:17:15,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:15,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:15,322 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 23:17:15,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289747566] [2020-10-21 23:17:15,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502588491] [2020-10-21 23:17:15,323 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 [2020-10-21 23:17:15,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:15,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:17:15,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:17:15,510 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 23:17:15,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:17:15,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 23:17:15,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486243582] [2020-10-21 23:17:15,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 23:17:15,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:15,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 23:17:15,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 23:17:15,512 INFO L87 Difference]: Start difference. First operand 2150 states and 8243 transitions. Second operand 16 states. [2020-10-21 23:17:16,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:16,471 INFO L93 Difference]: Finished difference Result 6025 states and 18746 transitions. [2020-10-21 23:17:16,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:17:16,471 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-21 23:17:16,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:16,482 INFO L225 Difference]: With dead ends: 6025 [2020-10-21 23:17:16,482 INFO L226 Difference]: Without dead ends: 6017 [2020-10-21 23:17:16,483 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-21 23:17:16,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6017 states. [2020-10-21 23:17:16,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6017 to 2121. [2020-10-21 23:17:16,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2121 states. [2020-10-21 23:17:16,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2121 states to 2121 states and 8118 transitions. [2020-10-21 23:17:16,576 INFO L78 Accepts]: Start accepts. Automaton has 2121 states and 8118 transitions. Word has length 21 [2020-10-21 23:17:16,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:16,576 INFO L481 AbstractCegarLoop]: Abstraction has 2121 states and 8118 transitions. [2020-10-21 23:17:16,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 23:17:16,576 INFO L276 IsEmpty]: Start isEmpty. Operand 2121 states and 8118 transitions. [2020-10-21 23:17:16,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:17:16,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:16,578 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:16,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-10-21 23:17:16,792 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 23:17:16,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:16,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1093767038, now seen corresponding path program 2 times [2020-10-21 23:17:16,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:16,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974448733] [2020-10-21 23:17:16,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:16,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:16,872 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 23:17:16,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974448733] [2020-10-21 23:17:16,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098215955] [2020-10-21 23:17:16,873 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 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 [2020-10-21 23:17:16,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 23:17:16,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:17:16,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:17:16,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:17:17,079 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 23:17:17,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:17:17,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 23:17:17,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397441585] [2020-10-21 23:17:17,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 23:17:17,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:17,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 23:17:17,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 23:17:17,081 INFO L87 Difference]: Start difference. First operand 2121 states and 8118 transitions. Second operand 16 states. [2020-10-21 23:17:18,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:18,000 INFO L93 Difference]: Finished difference Result 5922 states and 18404 transitions. [2020-10-21 23:17:18,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:17:18,001 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-21 23:17:18,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:18,011 INFO L225 Difference]: With dead ends: 5922 [2020-10-21 23:17:18,011 INFO L226 Difference]: Without dead ends: 5911 [2020-10-21 23:17:18,012 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-21 23:17:18,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5911 states. [2020-10-21 23:17:18,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5911 to 2085. [2020-10-21 23:17:18,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2085 states. [2020-10-21 23:17:18,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 7975 transitions. [2020-10-21 23:17:18,107 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 7975 transitions. Word has length 21 [2020-10-21 23:17:18,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:18,107 INFO L481 AbstractCegarLoop]: Abstraction has 2085 states and 7975 transitions. [2020-10-21 23:17:18,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 23:17:18,107 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 7975 transitions. [2020-10-21 23:17:18,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:17:18,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:18,109 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:18,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:17:18,322 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 23:17:18,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:18,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1169886916, now seen corresponding path program 1 times [2020-10-21 23:17:18,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:18,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140110507] [2020-10-21 23:17:18,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:18,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:18,370 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 23:17:18,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140110507] [2020-10-21 23:17:18,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:18,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:17:18,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866420667] [2020-10-21 23:17:18,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:17:18,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:18,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:17:18,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:17:18,373 INFO L87 Difference]: Start difference. First operand 2085 states and 7975 transitions. Second operand 5 states. [2020-10-21 23:17:18,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:18,516 INFO L93 Difference]: Finished difference Result 3167 states and 11408 transitions. [2020-10-21 23:17:18,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:17:18,517 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-21 23:17:18,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:18,525 INFO L225 Difference]: With dead ends: 3167 [2020-10-21 23:17:18,526 INFO L226 Difference]: Without dead ends: 3151 [2020-10-21 23:17:18,526 INFO L677 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 [2020-10-21 23:17:18,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3151 states. [2020-10-21 23:17:18,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3151 to 2322. [2020-10-21 23:17:18,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2322 states. [2020-10-21 23:17:18,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2322 states to 2322 states and 8744 transitions. [2020-10-21 23:17:18,603 INFO L78 Accepts]: Start accepts. Automaton has 2322 states and 8744 transitions. Word has length 21 [2020-10-21 23:17:18,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:18,603 INFO L481 AbstractCegarLoop]: Abstraction has 2322 states and 8744 transitions. [2020-10-21 23:17:18,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:17:18,603 INFO L276 IsEmpty]: Start isEmpty. Operand 2322 states and 8744 transitions. [2020-10-21 23:17:18,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:17:18,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:18,605 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:18,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-21 23:17:18,606 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 23:17:18,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:18,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1700514858, now seen corresponding path program 3 times [2020-10-21 23:17:18,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:18,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176430014] [2020-10-21 23:17:18,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:18,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:18,677 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:17:18,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176430014] [2020-10-21 23:17:18,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:18,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:17:18,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396287173] [2020-10-21 23:17:18,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:17:18,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:18,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:17:18,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:17:18,678 INFO L87 Difference]: Start difference. First operand 2322 states and 8744 transitions. Second operand 9 states. [2020-10-21 23:17:19,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:19,405 INFO L93 Difference]: Finished difference Result 6235 states and 19513 transitions. [2020-10-21 23:17:19,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:17:19,406 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-21 23:17:19,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:19,417 INFO L225 Difference]: With dead ends: 6235 [2020-10-21 23:17:19,417 INFO L226 Difference]: Without dead ends: 6224 [2020-10-21 23:17:19,418 INFO L677 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 [2020-10-21 23:17:19,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6224 states. [2020-10-21 23:17:19,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6224 to 2235. [2020-10-21 23:17:19,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2235 states. [2020-10-21 23:17:19,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2235 states to 2235 states and 8410 transitions. [2020-10-21 23:17:19,575 INFO L78 Accepts]: Start accepts. Automaton has 2235 states and 8410 transitions. Word has length 21 [2020-10-21 23:17:19,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:19,576 INFO L481 AbstractCegarLoop]: Abstraction has 2235 states and 8410 transitions. [2020-10-21 23:17:19,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:17:19,576 INFO L276 IsEmpty]: Start isEmpty. Operand 2235 states and 8410 transitions. [2020-10-21 23:17:19,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:17:19,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:19,578 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:19,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-21 23:17:19,578 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 23:17:19,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:19,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1698015018, now seen corresponding path program 4 times [2020-10-21 23:17:19,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:19,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600114472] [2020-10-21 23:17:19,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:19,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:19,673 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:17:19,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600114472] [2020-10-21 23:17:19,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:19,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:17:19,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053078390] [2020-10-21 23:17:19,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:17:19,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:19,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:17:19,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:17:19,676 INFO L87 Difference]: Start difference. First operand 2235 states and 8410 transitions. Second operand 9 states. [2020-10-21 23:17:20,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:20,404 INFO L93 Difference]: Finished difference Result 6169 states and 19292 transitions. [2020-10-21 23:17:20,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:17:20,404 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-21 23:17:20,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:20,416 INFO L225 Difference]: With dead ends: 6169 [2020-10-21 23:17:20,416 INFO L226 Difference]: Without dead ends: 6155 [2020-10-21 23:17:20,417 INFO L677 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 [2020-10-21 23:17:20,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6155 states. [2020-10-21 23:17:20,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6155 to 2191. [2020-10-21 23:17:20,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2191 states. [2020-10-21 23:17:20,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2191 states to 2191 states and 8230 transitions. [2020-10-21 23:17:20,494 INFO L78 Accepts]: Start accepts. Automaton has 2191 states and 8230 transitions. Word has length 21 [2020-10-21 23:17:20,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:20,494 INFO L481 AbstractCegarLoop]: Abstraction has 2191 states and 8230 transitions. [2020-10-21 23:17:20,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:17:20,495 INFO L276 IsEmpty]: Start isEmpty. Operand 2191 states and 8230 transitions. [2020-10-21 23:17:20,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:17:20,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:20,497 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:20,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-21 23:17:20,497 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 23:17:20,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:20,497 INFO L82 PathProgramCache]: Analyzing trace with hash 817049814, now seen corresponding path program 5 times [2020-10-21 23:17:20,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:20,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538785411] [2020-10-21 23:17:20,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:20,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:20,570 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:17:20,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538785411] [2020-10-21 23:17:20,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:20,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:17:20,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157063959] [2020-10-21 23:17:20,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:17:20,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:20,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:17:20,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:17:20,572 INFO L87 Difference]: Start difference. First operand 2191 states and 8230 transitions. Second operand 9 states. [2020-10-21 23:17:21,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:21,277 INFO L93 Difference]: Finished difference Result 6158 states and 19267 transitions. [2020-10-21 23:17:21,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:17:21,277 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-21 23:17:21,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:21,288 INFO L225 Difference]: With dead ends: 6158 [2020-10-21 23:17:21,289 INFO L226 Difference]: Without dead ends: 6147 [2020-10-21 23:17:21,289 INFO L677 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 [2020-10-21 23:17:21,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6147 states. [2020-10-21 23:17:21,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6147 to 2096. [2020-10-21 23:17:21,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2096 states. [2020-10-21 23:17:21,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2096 states to 2096 states and 7876 transitions. [2020-10-21 23:17:21,436 INFO L78 Accepts]: Start accepts. Automaton has 2096 states and 7876 transitions. Word has length 21 [2020-10-21 23:17:21,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:21,437 INFO L481 AbstractCegarLoop]: Abstraction has 2096 states and 7876 transitions. [2020-10-21 23:17:21,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:17:21,437 INFO L276 IsEmpty]: Start isEmpty. Operand 2096 states and 7876 transitions. [2020-10-21 23:17:21,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:17:21,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:21,439 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:21,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-21 23:17:21,439 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 23:17:21,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:21,439 INFO L82 PathProgramCache]: Analyzing trace with hash 803538774, now seen corresponding path program 6 times [2020-10-21 23:17:21,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:21,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395661789] [2020-10-21 23:17:21,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:21,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:21,528 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:17:21,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395661789] [2020-10-21 23:17:21,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:21,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:17:21,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221437124] [2020-10-21 23:17:21,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:17:21,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:21,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:17:21,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:17:21,530 INFO L87 Difference]: Start difference. First operand 2096 states and 7876 transitions. Second operand 9 states. [2020-10-21 23:17:22,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:22,254 INFO L93 Difference]: Finished difference Result 6017 states and 18791 transitions. [2020-10-21 23:17:22,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:17:22,254 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-21 23:17:22,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:22,265 INFO L225 Difference]: With dead ends: 6017 [2020-10-21 23:17:22,266 INFO L226 Difference]: Without dead ends: 6002 [2020-10-21 23:17:22,266 INFO L677 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 [2020-10-21 23:17:22,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6002 states. [2020-10-21 23:17:22,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6002 to 1965. [2020-10-21 23:17:22,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2020-10-21 23:17:22,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 7429 transitions. [2020-10-21 23:17:22,359 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 7429 transitions. Word has length 21 [2020-10-21 23:17:22,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:22,360 INFO L481 AbstractCegarLoop]: Abstraction has 1965 states and 7429 transitions. [2020-10-21 23:17:22,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:17:22,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 7429 transitions. [2020-10-21 23:17:22,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-21 23:17:22,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:22,362 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:22,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-21 23:17:22,363 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 23:17:22,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:22,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1912181542, now seen corresponding path program 1 times [2020-10-21 23:17:22,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:22,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872541615] [2020-10-21 23:17:22,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:22,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 23:17:22,376 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 23:17:22,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 23:17:22,387 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 23:17:22,406 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-21 23:17:22,406 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-21 23:17:22,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-21 23:17:22,406 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-21 23:17:22,407 WARN L371 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-21 23:17:22,408 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-10-21 23:17:22,427 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,428 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,428 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,428 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,428 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,428 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,428 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,429 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,429 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,429 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,429 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,429 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,429 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,429 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,430 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,430 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,430 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,430 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,430 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,430 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,430 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,430 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,431 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,431 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,431 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,431 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,431 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,431 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,431 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,432 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,432 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,432 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,432 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,432 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,432 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,433 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,433 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,433 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,434 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,434 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,434 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,434 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,434 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,434 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,434 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,434 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,435 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,435 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,435 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,435 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,436 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,436 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,436 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,436 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,436 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,436 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,436 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,437 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,437 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,437 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,437 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,437 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,437 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,439 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,439 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,439 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,439 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,440 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,440 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,440 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,440 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,440 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,440 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,440 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,441 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,446 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,446 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,446 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,447 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,447 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,447 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,447 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,447 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,447 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,447 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,448 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,448 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,448 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,448 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,448 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,448 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,448 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,449 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,449 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,449 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,449 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,449 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,449 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,449 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,449 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,450 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,450 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,450 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,450 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,450 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,451 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,451 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,451 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,451 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,451 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,452 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,453 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,453 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,453 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,453 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,454 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,454 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,454 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,455 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,455 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,456 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,456 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,456 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,456 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,456 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,457 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,457 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,458 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,458 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,458 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,459 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,459 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,460 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,460 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,460 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,460 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,460 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,460 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,461 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,462 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,462 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,462 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,462 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,462 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,462 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,462 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,464 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,464 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,464 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,464 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,464 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,464 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,464 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,465 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,466 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,466 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,466 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,466 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,466 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,466 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,467 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,467 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,468 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,468 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,468 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,468 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,468 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,469 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,469 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,469 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:22,470 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-21 23:17:22,470 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-21 23:17:22,470 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 23:17:22,471 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 23:17:22,471 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-21 23:17:22,471 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 23:17:22,471 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 23:17:22,471 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 23:17:22,471 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 23:17:22,471 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 23:17:22,473 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-21 23:17:22,473 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 161 places, 151 transitions, 392 flow [2020-10-21 23:17:22,473 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 161 places, 151 transitions, 392 flow [2020-10-21 23:17:22,473 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 161 places, 151 transitions, 392 flow [2020-10-21 23:17:22,496 INFO L129 PetriNetUnfolder]: 9/161 cut-off events. [2020-10-21 23:17:22,496 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-21 23:17:22,498 INFO L80 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 161 events. 9/161 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 266 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 188. Up to 12 conditions per place. [2020-10-21 23:17:22,503 INFO L116 LiptonReduction]: Number of co-enabled transitions 2744 [2020-10-21 23:17:24,310 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-21 23:17:24,890 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2020-10-21 23:17:25,063 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2020-10-21 23:17:25,360 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 94 [2020-10-21 23:17:25,492 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-21 23:17:25,497 INFO L131 LiptonReduction]: Checked pairs total: 4200 [2020-10-21 23:17:25,498 INFO L133 LiptonReduction]: Total number of compositions: 162 [2020-10-21 23:17:25,498 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 39 transitions, 168 flow [2020-10-21 23:17:25,846 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 6191 states. [2020-10-21 23:17:25,846 INFO L276 IsEmpty]: Start isEmpty. Operand 6191 states. [2020-10-21 23:17:25,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-21 23:17:25,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:25,847 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-21 23:17:25,847 INFO L429 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]=== [2020-10-21 23:17:25,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:25,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1311531, now seen corresponding path program 1 times [2020-10-21 23:17:25,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:25,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738210583] [2020-10-21 23:17:25,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:25,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:25,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:17:25,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738210583] [2020-10-21 23:17:25,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:25,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-21 23:17:25,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234051730] [2020-10-21 23:17:25,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 23:17:25,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:25,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 23:17:25,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:17:25,881 INFO L87 Difference]: Start difference. First operand 6191 states. Second operand 3 states. [2020-10-21 23:17:25,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:25,958 INFO L93 Difference]: Finished difference Result 5844 states and 26316 transitions. [2020-10-21 23:17:25,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 23:17:25,959 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-21 23:17:25,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:25,979 INFO L225 Difference]: With dead ends: 5844 [2020-10-21 23:17:25,980 INFO L226 Difference]: Without dead ends: 5479 [2020-10-21 23:17:25,981 INFO L677 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 [2020-10-21 23:17:26,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5479 states. [2020-10-21 23:17:26,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5479 to 5479. [2020-10-21 23:17:26,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5479 states. [2020-10-21 23:17:26,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5479 states to 5479 states and 24493 transitions. [2020-10-21 23:17:26,146 INFO L78 Accepts]: Start accepts. Automaton has 5479 states and 24493 transitions. Word has length 3 [2020-10-21 23:17:26,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:26,147 INFO L481 AbstractCegarLoop]: Abstraction has 5479 states and 24493 transitions. [2020-10-21 23:17:26,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 23:17:26,147 INFO L276 IsEmpty]: Start isEmpty. Operand 5479 states and 24493 transitions. [2020-10-21 23:17:26,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 23:17:26,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:26,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:26,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-21 23:17:26,148 INFO L429 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]=== [2020-10-21 23:17:26,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:26,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1486087653, now seen corresponding path program 1 times [2020-10-21 23:17:26,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:26,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177292389] [2020-10-21 23:17:26,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:26,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:26,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:17:26,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177292389] [2020-10-21 23:17:26,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:26,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:17:26,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737847531] [2020-10-21 23:17:26,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:17:26,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:26,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:17:26,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:17:26,183 INFO L87 Difference]: Start difference. First operand 5479 states and 24493 transitions. Second operand 5 states. [2020-10-21 23:17:26,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:26,347 INFO L93 Difference]: Finished difference Result 9673 states and 40333 transitions. [2020-10-21 23:17:26,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:17:26,348 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-21 23:17:26,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:26,372 INFO L225 Difference]: With dead ends: 9673 [2020-10-21 23:17:26,373 INFO L226 Difference]: Without dead ends: 9666 [2020-10-21 23:17:26,373 INFO L677 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 [2020-10-21 23:17:26,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9666 states. [2020-10-21 23:17:26,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9666 to 6331. [2020-10-21 23:17:26,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6331 states. [2020-10-21 23:17:26,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6331 states to 6331 states and 28544 transitions. [2020-10-21 23:17:26,579 INFO L78 Accepts]: Start accepts. Automaton has 6331 states and 28544 transitions. Word has length 9 [2020-10-21 23:17:26,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:26,580 INFO L481 AbstractCegarLoop]: Abstraction has 6331 states and 28544 transitions. [2020-10-21 23:17:26,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:17:26,580 INFO L276 IsEmpty]: Start isEmpty. Operand 6331 states and 28544 transitions. [2020-10-21 23:17:26,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 23:17:26,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:26,580 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:26,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-21 23:17:26,580 INFO L429 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]=== [2020-10-21 23:17:26,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:26,581 INFO L82 PathProgramCache]: Analyzing trace with hash -2078441721, now seen corresponding path program 1 times [2020-10-21 23:17:26,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:26,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30794037] [2020-10-21 23:17:26,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:26,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:26,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 23:17:26,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30794037] [2020-10-21 23:17:26,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:26,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:17:26,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941559921] [2020-10-21 23:17:26,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:17:26,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:26,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:17:26,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:17:26,618 INFO L87 Difference]: Start difference. First operand 6331 states and 28544 transitions. Second operand 5 states. [2020-10-21 23:17:26,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:26,785 INFO L93 Difference]: Finished difference Result 11081 states and 46826 transitions. [2020-10-21 23:17:26,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:17:26,786 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-21 23:17:26,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:26,953 INFO L225 Difference]: With dead ends: 11081 [2020-10-21 23:17:26,953 INFO L226 Difference]: Without dead ends: 11068 [2020-10-21 23:17:26,953 INFO L677 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 [2020-10-21 23:17:27,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11068 states. [2020-10-21 23:17:27,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11068 to 7391. [2020-10-21 23:17:27,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7391 states. [2020-10-21 23:17:27,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7391 states to 7391 states and 33694 transitions. [2020-10-21 23:17:27,181 INFO L78 Accepts]: Start accepts. Automaton has 7391 states and 33694 transitions. Word has length 13 [2020-10-21 23:17:27,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:27,181 INFO L481 AbstractCegarLoop]: Abstraction has 7391 states and 33694 transitions. [2020-10-21 23:17:27,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:17:27,182 INFO L276 IsEmpty]: Start isEmpty. Operand 7391 states and 33694 transitions. [2020-10-21 23:17:27,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-21 23:17:27,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:27,182 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:27,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-21 23:17:27,183 INFO L429 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]=== [2020-10-21 23:17:27,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:27,183 INFO L82 PathProgramCache]: Analyzing trace with hash -80896491, now seen corresponding path program 1 times [2020-10-21 23:17:27,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:27,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206471512] [2020-10-21 23:17:27,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:27,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:27,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:17:27,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206471512] [2020-10-21 23:17:27,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972675733] [2020-10-21 23:17:27,235 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 [2020-10-21 23:17:27,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:27,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-21 23:17:27,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:17:27,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:17:27,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:17:27,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-21 23:17:27,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691309203] [2020-10-21 23:17:27,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-21 23:17:27,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:27,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-21 23:17:27,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-21 23:17:27,396 INFO L87 Difference]: Start difference. First operand 7391 states and 33694 transitions. Second operand 12 states. [2020-10-21 23:17:27,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:27,812 INFO L93 Difference]: Finished difference Result 16749 states and 66010 transitions. [2020-10-21 23:17:27,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:17:27,813 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-21 23:17:27,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:27,854 INFO L225 Difference]: With dead ends: 16749 [2020-10-21 23:17:27,854 INFO L226 Difference]: Without dead ends: 16736 [2020-10-21 23:17:27,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-21 23:17:27,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16736 states. [2020-10-21 23:17:28,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16736 to 7303. [2020-10-21 23:17:28,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7303 states. [2020-10-21 23:17:28,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7303 states to 7303 states and 33260 transitions. [2020-10-21 23:17:28,979 INFO L78 Accepts]: Start accepts. Automaton has 7303 states and 33260 transitions. Word has length 15 [2020-10-21 23:17:28,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:28,979 INFO L481 AbstractCegarLoop]: Abstraction has 7303 states and 33260 transitions. [2020-10-21 23:17:28,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-21 23:17:28,979 INFO L276 IsEmpty]: Start isEmpty. Operand 7303 states and 33260 transitions. [2020-10-21 23:17:28,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-21 23:17:28,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:28,980 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:29,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-10-21 23:17:29,181 INFO L429 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]=== [2020-10-21 23:17:29,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:29,182 INFO L82 PathProgramCache]: Analyzing trace with hash -222679403, now seen corresponding path program 2 times [2020-10-21 23:17:29,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:29,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682296690] [2020-10-21 23:17:29,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:29,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:29,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 23:17:29,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682296690] [2020-10-21 23:17:29,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:29,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:17:29,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334148136] [2020-10-21 23:17:29,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:17:29,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:29,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:17:29,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:17:29,230 INFO L87 Difference]: Start difference. First operand 7303 states and 33260 transitions. Second operand 7 states. [2020-10-21 23:17:29,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:29,677 INFO L93 Difference]: Finished difference Result 17085 states and 67393 transitions. [2020-10-21 23:17:29,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:17:29,677 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-21 23:17:29,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:29,738 INFO L225 Difference]: With dead ends: 17085 [2020-10-21 23:17:29,738 INFO L226 Difference]: Without dead ends: 17071 [2020-10-21 23:17:29,738 INFO L677 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 [2020-10-21 23:17:29,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17071 states. [2020-10-21 23:17:30,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17071 to 7048. [2020-10-21 23:17:30,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7048 states. [2020-10-21 23:17:30,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7048 states to 7048 states and 32136 transitions. [2020-10-21 23:17:30,031 INFO L78 Accepts]: Start accepts. Automaton has 7048 states and 32136 transitions. Word has length 15 [2020-10-21 23:17:30,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:30,031 INFO L481 AbstractCegarLoop]: Abstraction has 7048 states and 32136 transitions. [2020-10-21 23:17:30,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:17:30,031 INFO L276 IsEmpty]: Start isEmpty. Operand 7048 states and 32136 transitions. [2020-10-21 23:17:30,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-21 23:17:30,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:30,032 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:30,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-21 23:17:30,032 INFO L429 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]=== [2020-10-21 23:17:30,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:30,033 INFO L82 PathProgramCache]: Analyzing trace with hash -681474966, now seen corresponding path program 1 times [2020-10-21 23:17:30,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:30,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393647052] [2020-10-21 23:17:30,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:30,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:30,082 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:17:30,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393647052] [2020-10-21 23:17:30,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:30,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:17:30,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057860216] [2020-10-21 23:17:30,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:17:30,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:30,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:17:30,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:17:30,084 INFO L87 Difference]: Start difference. First operand 7048 states and 32136 transitions. Second operand 5 states. [2020-10-21 23:17:30,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:30,285 INFO L93 Difference]: Finished difference Result 12234 states and 52488 transitions. [2020-10-21 23:17:30,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:17:30,286 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-21 23:17:30,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:30,331 INFO L225 Difference]: With dead ends: 12234 [2020-10-21 23:17:30,331 INFO L226 Difference]: Without dead ends: 12212 [2020-10-21 23:17:30,332 INFO L677 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 [2020-10-21 23:17:30,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12212 states. [2020-10-21 23:17:30,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12212 to 8342. [2020-10-21 23:17:30,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8342 states. [2020-10-21 23:17:30,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8342 states to 8342 states and 38278 transitions. [2020-10-21 23:17:30,735 INFO L78 Accepts]: Start accepts. Automaton has 8342 states and 38278 transitions. Word has length 17 [2020-10-21 23:17:30,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:30,735 INFO L481 AbstractCegarLoop]: Abstraction has 8342 states and 38278 transitions. [2020-10-21 23:17:30,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:17:30,735 INFO L276 IsEmpty]: Start isEmpty. Operand 8342 states and 38278 transitions. [2020-10-21 23:17:30,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 23:17:30,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:30,736 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:30,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-21 23:17:30,736 INFO L429 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]=== [2020-10-21 23:17:30,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:30,737 INFO L82 PathProgramCache]: Analyzing trace with hash -66098056, now seen corresponding path program 1 times [2020-10-21 23:17:30,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:30,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444423178] [2020-10-21 23:17:30,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:30,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:30,799 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 23:17:30,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444423178] [2020-10-21 23:17:30,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107770914] [2020-10-21 23:17:30,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-10-21 23:17:30,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:30,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-21 23:17:30,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:17:30,975 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 23:17:30,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:17:30,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-21 23:17:30,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664161837] [2020-10-21 23:17:30,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-21 23:17:30,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:30,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-21 23:17:30,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-21 23:17:30,977 INFO L87 Difference]: Start difference. First operand 8342 states and 38278 transitions. Second operand 12 states. [2020-10-21 23:17:31,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:31,429 INFO L93 Difference]: Finished difference Result 19016 states and 76191 transitions. [2020-10-21 23:17:31,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:17:31,430 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-21 23:17:31,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:31,478 INFO L225 Difference]: With dead ends: 19016 [2020-10-21 23:17:31,478 INFO L226 Difference]: Without dead ends: 18998 [2020-10-21 23:17:31,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-21 23:17:31,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18998 states. [2020-10-21 23:17:31,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18998 to 8452. [2020-10-21 23:17:31,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8452 states. [2020-10-21 23:17:31,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8452 states to 8452 states and 38704 transitions. [2020-10-21 23:17:31,813 INFO L78 Accepts]: Start accepts. Automaton has 8452 states and 38704 transitions. Word has length 19 [2020-10-21 23:17:31,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:31,814 INFO L481 AbstractCegarLoop]: Abstraction has 8452 states and 38704 transitions. [2020-10-21 23:17:31,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-21 23:17:31,814 INFO L276 IsEmpty]: Start isEmpty. Operand 8452 states and 38704 transitions. [2020-10-21 23:17:31,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 23:17:31,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:31,815 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:32,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-21 23:17:32,016 INFO L429 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]=== [2020-10-21 23:17:32,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:32,016 INFO L82 PathProgramCache]: Analyzing trace with hash -2062391496, now seen corresponding path program 2 times [2020-10-21 23:17:32,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:32,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086029503] [2020-10-21 23:17:32,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:32,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:32,066 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:17:32,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086029503] [2020-10-21 23:17:32,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:32,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:17:32,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498389877] [2020-10-21 23:17:32,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:17:32,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:32,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:17:32,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:17:32,068 INFO L87 Difference]: Start difference. First operand 8452 states and 38704 transitions. Second operand 7 states. [2020-10-21 23:17:32,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:32,674 INFO L93 Difference]: Finished difference Result 19420 states and 77854 transitions. [2020-10-21 23:17:32,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:17:32,675 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-21 23:17:32,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:32,758 INFO L225 Difference]: With dead ends: 19420 [2020-10-21 23:17:32,758 INFO L226 Difference]: Without dead ends: 19395 [2020-10-21 23:17:32,759 INFO L677 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 [2020-10-21 23:17:32,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19395 states. [2020-10-21 23:17:33,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19395 to 8129. [2020-10-21 23:17:33,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8129 states. [2020-10-21 23:17:33,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8129 states to 8129 states and 37298 transitions. [2020-10-21 23:17:33,315 INFO L78 Accepts]: Start accepts. Automaton has 8129 states and 37298 transitions. Word has length 19 [2020-10-21 23:17:33,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:33,316 INFO L481 AbstractCegarLoop]: Abstraction has 8129 states and 37298 transitions. [2020-10-21 23:17:33,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:17:33,316 INFO L276 IsEmpty]: Start isEmpty. Operand 8129 states and 37298 transitions. [2020-10-21 23:17:33,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 23:17:33,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:33,317 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:33,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-21 23:17:33,318 INFO L429 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]=== [2020-10-21 23:17:33,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:33,318 INFO L82 PathProgramCache]: Analyzing trace with hash -2062399215, now seen corresponding path program 1 times [2020-10-21 23:17:33,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:33,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860859879] [2020-10-21 23:17:33,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:33,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:33,375 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:17:33,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860859879] [2020-10-21 23:17:33,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:33,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:17:33,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826360761] [2020-10-21 23:17:33,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:17:33,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:33,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:17:33,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:17:33,377 INFO L87 Difference]: Start difference. First operand 8129 states and 37298 transitions. Second operand 7 states. [2020-10-21 23:17:33,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:33,892 INFO L93 Difference]: Finished difference Result 19373 states and 77785 transitions. [2020-10-21 23:17:33,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:17:33,893 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-21 23:17:33,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:33,972 INFO L225 Difference]: With dead ends: 19373 [2020-10-21 23:17:33,973 INFO L226 Difference]: Without dead ends: 19348 [2020-10-21 23:17:33,974 INFO L677 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 [2020-10-21 23:17:34,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19348 states. [2020-10-21 23:17:34,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19348 to 8375. [2020-10-21 23:17:34,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8375 states. [2020-10-21 23:17:34,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8375 states to 8375 states and 38394 transitions. [2020-10-21 23:17:34,629 INFO L78 Accepts]: Start accepts. Automaton has 8375 states and 38394 transitions. Word has length 19 [2020-10-21 23:17:34,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:34,629 INFO L481 AbstractCegarLoop]: Abstraction has 8375 states and 38394 transitions. [2020-10-21 23:17:34,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:17:34,629 INFO L276 IsEmpty]: Start isEmpty. Operand 8375 states and 38394 transitions. [2020-10-21 23:17:34,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 23:17:34,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:34,630 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:34,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-21 23:17:34,630 INFO L429 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]=== [2020-10-21 23:17:34,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:34,631 INFO L82 PathProgramCache]: Analyzing trace with hash -2050465455, now seen corresponding path program 2 times [2020-10-21 23:17:34,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:34,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449830802] [2020-10-21 23:17:34,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:34,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:34,686 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:17:34,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449830802] [2020-10-21 23:17:34,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:34,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:17:34,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796797103] [2020-10-21 23:17:34,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:17:34,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:34,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:17:34,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:17:34,688 INFO L87 Difference]: Start difference. First operand 8375 states and 38394 transitions. Second operand 7 states. [2020-10-21 23:17:35,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:35,090 INFO L93 Difference]: Finished difference Result 19555 states and 78564 transitions. [2020-10-21 23:17:35,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:17:35,091 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-21 23:17:35,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:35,139 INFO L225 Difference]: With dead ends: 19555 [2020-10-21 23:17:35,139 INFO L226 Difference]: Without dead ends: 19530 [2020-10-21 23:17:35,139 INFO L677 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 [2020-10-21 23:17:35,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19530 states. [2020-10-21 23:17:35,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19530 to 8317. [2020-10-21 23:17:35,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8317 states. [2020-10-21 23:17:35,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8317 states to 8317 states and 38184 transitions. [2020-10-21 23:17:35,477 INFO L78 Accepts]: Start accepts. Automaton has 8317 states and 38184 transitions. Word has length 19 [2020-10-21 23:17:35,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:35,477 INFO L481 AbstractCegarLoop]: Abstraction has 8317 states and 38184 transitions. [2020-10-21 23:17:35,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:17:35,477 INFO L276 IsEmpty]: Start isEmpty. Operand 8317 states and 38184 transitions. [2020-10-21 23:17:35,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:17:35,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:35,478 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:35,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-21 23:17:35,479 INFO L429 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]=== [2020-10-21 23:17:35,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:35,479 INFO L82 PathProgramCache]: Analyzing trace with hash 904291743, now seen corresponding path program 1 times [2020-10-21 23:17:35,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:35,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199778480] [2020-10-21 23:17:35,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:35,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:35,556 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 23:17:35,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199778480] [2020-10-21 23:17:35,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478048274] [2020-10-21 23:17:35,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-10-21 23:17:35,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:35,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:17:35,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:17:35,832 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 23:17:35,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:17:35,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 23:17:35,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36351386] [2020-10-21 23:17:35,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 23:17:35,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:35,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 23:17:35,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 23:17:35,835 INFO L87 Difference]: Start difference. First operand 8317 states and 38184 transitions. Second operand 16 states. [2020-10-21 23:17:37,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:37,119 INFO L93 Difference]: Finished difference Result 26969 states and 101544 transitions. [2020-10-21 23:17:37,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:17:37,119 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-21 23:17:37,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:37,184 INFO L225 Difference]: With dead ends: 26969 [2020-10-21 23:17:37,184 INFO L226 Difference]: Without dead ends: 26957 [2020-10-21 23:17:37,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-21 23:17:37,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26957 states. [2020-10-21 23:17:37,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26957 to 8208. [2020-10-21 23:17:37,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8208 states. [2020-10-21 23:17:37,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8208 states to 8208 states and 37640 transitions. [2020-10-21 23:17:37,578 INFO L78 Accepts]: Start accepts. Automaton has 8208 states and 37640 transitions. Word has length 21 [2020-10-21 23:17:37,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:37,578 INFO L481 AbstractCegarLoop]: Abstraction has 8208 states and 37640 transitions. [2020-10-21 23:17:37,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 23:17:37,579 INFO L276 IsEmpty]: Start isEmpty. Operand 8208 states and 37640 transitions. [2020-10-21 23:17:37,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:17:37,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:37,580 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:37,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:17:37,781 INFO L429 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]=== [2020-10-21 23:17:37,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:37,781 INFO L82 PathProgramCache]: Analyzing trace with hash 916225503, now seen corresponding path program 2 times [2020-10-21 23:17:37,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:37,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012781841] [2020-10-21 23:17:37,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:37,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:37,850 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 23:17:37,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012781841] [2020-10-21 23:17:37,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168352198] [2020-10-21 23:17:37,851 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 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 [2020-10-21 23:17:37,949 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 23:17:37,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:17:37,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:17:37,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:17:38,105 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 23:17:38,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:17:38,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 23:17:38,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215195973] [2020-10-21 23:17:38,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 23:17:38,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:38,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 23:17:38,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 23:17:38,107 INFO L87 Difference]: Start difference. First operand 8208 states and 37640 transitions. Second operand 16 states. [2020-10-21 23:17:39,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:39,392 INFO L93 Difference]: Finished difference Result 26669 states and 100297 transitions. [2020-10-21 23:17:39,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:17:39,393 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-21 23:17:39,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:39,463 INFO L225 Difference]: With dead ends: 26669 [2020-10-21 23:17:39,463 INFO L226 Difference]: Without dead ends: 26653 [2020-10-21 23:17:39,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-21 23:17:39,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26653 states. [2020-10-21 23:17:39,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26653 to 8091. [2020-10-21 23:17:39,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8091 states. [2020-10-21 23:17:39,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8091 states to 8091 states and 37076 transitions. [2020-10-21 23:17:39,872 INFO L78 Accepts]: Start accepts. Automaton has 8091 states and 37076 transitions. Word has length 21 [2020-10-21 23:17:39,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:39,872 INFO L481 AbstractCegarLoop]: Abstraction has 8091 states and 37076 transitions. [2020-10-21 23:17:39,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 23:17:39,872 INFO L276 IsEmpty]: Start isEmpty. Operand 8091 states and 37076 transitions. [2020-10-21 23:17:39,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:17:39,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:39,873 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:40,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-10-21 23:17:40,075 INFO L429 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]=== [2020-10-21 23:17:40,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:40,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1978290081, now seen corresponding path program 3 times [2020-10-21 23:17:40,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:40,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650440092] [2020-10-21 23:17:40,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:40,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:40,153 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:17:40,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650440092] [2020-10-21 23:17:40,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:40,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:17:40,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789450213] [2020-10-21 23:17:40,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:17:40,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:40,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:17:40,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:17:40,155 INFO L87 Difference]: Start difference. First operand 8091 states and 37076 transitions. Second operand 9 states. [2020-10-21 23:17:41,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:41,116 INFO L93 Difference]: Finished difference Result 26678 states and 100382 transitions. [2020-10-21 23:17:41,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:17:41,117 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-21 23:17:41,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:41,194 INFO L225 Difference]: With dead ends: 26678 [2020-10-21 23:17:41,194 INFO L226 Difference]: Without dead ends: 26666 [2020-10-21 23:17:41,195 INFO L677 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 [2020-10-21 23:17:41,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26666 states. [2020-10-21 23:17:41,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26666 to 7869. [2020-10-21 23:17:41,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7869 states. [2020-10-21 23:17:41,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7869 states to 7869 states and 36086 transitions. [2020-10-21 23:17:41,867 INFO L78 Accepts]: Start accepts. Automaton has 7869 states and 36086 transitions. Word has length 21 [2020-10-21 23:17:41,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:41,867 INFO L481 AbstractCegarLoop]: Abstraction has 7869 states and 36086 transitions. [2020-10-21 23:17:41,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:17:41,867 INFO L276 IsEmpty]: Start isEmpty. Operand 7869 states and 36086 transitions. [2020-10-21 23:17:41,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:17:41,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:41,868 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:41,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-21 23:17:41,869 INFO L429 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]=== [2020-10-21 23:17:41,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:41,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1985700321, now seen corresponding path program 4 times [2020-10-21 23:17:41,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:41,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641564151] [2020-10-21 23:17:41,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:41,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:41,948 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:17:41,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641564151] [2020-10-21 23:17:41,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:41,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:17:41,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192658624] [2020-10-21 23:17:41,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:17:41,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:41,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:17:41,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:17:41,950 INFO L87 Difference]: Start difference. First operand 7869 states and 36086 transitions. Second operand 9 states. [2020-10-21 23:17:42,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:42,829 INFO L93 Difference]: Finished difference Result 26497 states and 99670 transitions. [2020-10-21 23:17:42,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:17:42,829 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-21 23:17:42,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:42,895 INFO L225 Difference]: With dead ends: 26497 [2020-10-21 23:17:42,895 INFO L226 Difference]: Without dead ends: 26481 [2020-10-21 23:17:42,895 INFO L677 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 [2020-10-21 23:17:43,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26481 states. [2020-10-21 23:17:43,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26481 to 7756. [2020-10-21 23:17:43,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7756 states. [2020-10-21 23:17:43,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7756 states to 7756 states and 35534 transitions. [2020-10-21 23:17:43,273 INFO L78 Accepts]: Start accepts. Automaton has 7756 states and 35534 transitions. Word has length 21 [2020-10-21 23:17:43,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:43,273 INFO L481 AbstractCegarLoop]: Abstraction has 7756 states and 35534 transitions. [2020-10-21 23:17:43,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:17:43,273 INFO L276 IsEmpty]: Start isEmpty. Operand 7756 states and 35534 transitions. [2020-10-21 23:17:43,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:17:43,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:43,274 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:43,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-21 23:17:43,275 INFO L429 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]=== [2020-10-21 23:17:43,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:43,275 INFO L82 PathProgramCache]: Analyzing trace with hash -522836100, now seen corresponding path program 1 times [2020-10-21 23:17:43,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:43,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241226294] [2020-10-21 23:17:43,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:43,306 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 23:17:43,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241226294] [2020-10-21 23:17:43,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:43,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:17:43,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818741446] [2020-10-21 23:17:43,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:17:43,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:43,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:17:43,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:17:43,308 INFO L87 Difference]: Start difference. First operand 7756 states and 35534 transitions. Second operand 5 states. [2020-10-21 23:17:43,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:43,488 INFO L93 Difference]: Finished difference Result 13259 states and 57521 transitions. [2020-10-21 23:17:43,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:17:43,489 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-21 23:17:43,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:43,526 INFO L225 Difference]: With dead ends: 13259 [2020-10-21 23:17:43,526 INFO L226 Difference]: Without dead ends: 13228 [2020-10-21 23:17:43,526 INFO L677 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 [2020-10-21 23:17:43,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13228 states. [2020-10-21 23:17:43,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13228 to 9263. [2020-10-21 23:17:43,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9263 states. [2020-10-21 23:17:44,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9263 states to 9263 states and 42388 transitions. [2020-10-21 23:17:44,061 INFO L78 Accepts]: Start accepts. Automaton has 9263 states and 42388 transitions. Word has length 21 [2020-10-21 23:17:44,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:44,061 INFO L481 AbstractCegarLoop]: Abstraction has 9263 states and 42388 transitions. [2020-10-21 23:17:44,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:17:44,062 INFO L276 IsEmpty]: Start isEmpty. Operand 9263 states and 42388 transitions. [2020-10-21 23:17:44,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:17:44,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:44,063 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:44,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-21 23:17:44,063 INFO L429 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]=== [2020-10-21 23:17:44,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:44,063 INFO L82 PathProgramCache]: Analyzing trace with hash 892708447, now seen corresponding path program 5 times [2020-10-21 23:17:44,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:44,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950850213] [2020-10-21 23:17:44,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:44,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:44,132 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:17:44,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950850213] [2020-10-21 23:17:44,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:44,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:17:44,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880136832] [2020-10-21 23:17:44,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:17:44,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:44,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:17:44,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:17:44,134 INFO L87 Difference]: Start difference. First operand 9263 states and 42388 transitions. Second operand 9 states. [2020-10-21 23:17:45,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:45,011 INFO L93 Difference]: Finished difference Result 29796 states and 113861 transitions. [2020-10-21 23:17:45,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:17:45,012 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-21 23:17:45,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:45,082 INFO L225 Difference]: With dead ends: 29796 [2020-10-21 23:17:45,082 INFO L226 Difference]: Without dead ends: 29778 [2020-10-21 23:17:45,083 INFO L677 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 [2020-10-21 23:17:45,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29778 states. [2020-10-21 23:17:45,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29778 to 8972. [2020-10-21 23:17:45,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8972 states. [2020-10-21 23:17:45,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8972 states to 8972 states and 41051 transitions. [2020-10-21 23:17:45,523 INFO L78 Accepts]: Start accepts. Automaton has 8972 states and 41051 transitions. Word has length 21 [2020-10-21 23:17:45,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:45,523 INFO L481 AbstractCegarLoop]: Abstraction has 8972 states and 41051 transitions. [2020-10-21 23:17:45,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:17:45,524 INFO L276 IsEmpty]: Start isEmpty. Operand 8972 states and 41051 transitions. [2020-10-21 23:17:45,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:17:45,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:45,525 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:45,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-21 23:17:45,525 INFO L429 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]=== [2020-10-21 23:17:45,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:45,526 INFO L82 PathProgramCache]: Analyzing trace with hash 912052447, now seen corresponding path program 6 times [2020-10-21 23:17:45,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:45,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448055425] [2020-10-21 23:17:45,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:45,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:45,597 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:17:45,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448055425] [2020-10-21 23:17:45,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:45,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:17:45,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504737889] [2020-10-21 23:17:45,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:17:45,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:45,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:17:45,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:17:45,599 INFO L87 Difference]: Start difference. First operand 8972 states and 41051 transitions. Second operand 9 states. [2020-10-21 23:17:46,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:46,541 INFO L93 Difference]: Finished difference Result 29387 states and 112119 transitions. [2020-10-21 23:17:46,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:17:46,541 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-21 23:17:46,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:46,610 INFO L225 Difference]: With dead ends: 29387 [2020-10-21 23:17:46,610 INFO L226 Difference]: Without dead ends: 29364 [2020-10-21 23:17:46,611 INFO L677 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 [2020-10-21 23:17:46,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29364 states. [2020-10-21 23:17:47,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29364 to 8573. [2020-10-21 23:17:47,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8573 states. [2020-10-21 23:17:47,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8573 states to 8573 states and 39353 transitions. [2020-10-21 23:17:47,877 INFO L78 Accepts]: Start accepts. Automaton has 8573 states and 39353 transitions. Word has length 21 [2020-10-21 23:17:47,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:47,877 INFO L481 AbstractCegarLoop]: Abstraction has 8573 states and 39353 transitions. [2020-10-21 23:17:47,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:17:47,878 INFO L276 IsEmpty]: Start isEmpty. Operand 8573 states and 39353 transitions. [2020-10-21 23:17:47,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 23:17:47,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:47,879 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:47,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-21 23:17:47,879 INFO L429 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]=== [2020-10-21 23:17:47,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:47,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1391110006, now seen corresponding path program 1 times [2020-10-21 23:17:47,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:47,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172591913] [2020-10-21 23:17:47,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:47,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:47,938 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:17:47,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172591913] [2020-10-21 23:17:47,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402776502] [2020-10-21 23:17:47,938 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 [2020-10-21 23:17:48,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:48,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-21 23:17:48,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:17:48,100 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:17:48,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:17:48,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-21 23:17:48,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008460578] [2020-10-21 23:17:48,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-21 23:17:48,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:48,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-21 23:17:48,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-21 23:17:48,102 INFO L87 Difference]: Start difference. First operand 8573 states and 39353 transitions. Second operand 12 states. [2020-10-21 23:17:48,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:48,552 INFO L93 Difference]: Finished difference Result 19727 states and 80274 transitions. [2020-10-21 23:17:48,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:17:48,552 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-21 23:17:48,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:48,606 INFO L225 Difference]: With dead ends: 19727 [2020-10-21 23:17:48,606 INFO L226 Difference]: Without dead ends: 19703 [2020-10-21 23:17:48,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-21 23:17:48,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19703 states. [2020-10-21 23:17:48,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19703 to 8847. [2020-10-21 23:17:48,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8847 states. [2020-10-21 23:17:48,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8847 states to 8847 states and 40495 transitions. [2020-10-21 23:17:48,956 INFO L78 Accepts]: Start accepts. Automaton has 8847 states and 40495 transitions. Word has length 23 [2020-10-21 23:17:48,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:48,957 INFO L481 AbstractCegarLoop]: Abstraction has 8847 states and 40495 transitions. [2020-10-21 23:17:48,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-21 23:17:48,957 INFO L276 IsEmpty]: Start isEmpty. Operand 8847 states and 40495 transitions. [2020-10-21 23:17:48,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 23:17:48,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:48,960 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:49,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-10-21 23:17:49,167 INFO L429 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]=== [2020-10-21 23:17:49,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:49,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1213836140, now seen corresponding path program 1 times [2020-10-21 23:17:49,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:49,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280467353] [2020-10-21 23:17:49,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:49,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:49,215 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:17:49,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280467353] [2020-10-21 23:17:49,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457984826] [2020-10-21 23:17:49,216 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 [2020-10-21 23:17:49,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:49,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-21 23:17:49,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:17:49,373 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:17:49,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:17:49,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-21 23:17:49,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063611741] [2020-10-21 23:17:49,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-21 23:17:49,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:49,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-21 23:17:49,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-21 23:17:49,375 INFO L87 Difference]: Start difference. First operand 8847 states and 40495 transitions. Second operand 12 states. [2020-10-21 23:17:49,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:49,786 INFO L93 Difference]: Finished difference Result 20670 states and 84217 transitions. [2020-10-21 23:17:49,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:17:49,786 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-21 23:17:49,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:49,839 INFO L225 Difference]: With dead ends: 20670 [2020-10-21 23:17:49,840 INFO L226 Difference]: Without dead ends: 20642 [2020-10-21 23:17:49,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-21 23:17:49,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20642 states. [2020-10-21 23:17:50,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20642 to 9111. [2020-10-21 23:17:50,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9111 states. [2020-10-21 23:17:50,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9111 states to 9111 states and 41667 transitions. [2020-10-21 23:17:50,422 INFO L78 Accepts]: Start accepts. Automaton has 9111 states and 41667 transitions. Word has length 23 [2020-10-21 23:17:50,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:50,422 INFO L481 AbstractCegarLoop]: Abstraction has 9111 states and 41667 transitions. [2020-10-21 23:17:50,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-21 23:17:50,422 INFO L276 IsEmpty]: Start isEmpty. Operand 9111 states and 41667 transitions. [2020-10-21 23:17:50,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 23:17:50,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:50,425 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:50,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:17:50,626 INFO L429 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]=== [2020-10-21 23:17:50,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:50,627 INFO L82 PathProgramCache]: Analyzing trace with hash 65683220, now seen corresponding path program 2 times [2020-10-21 23:17:50,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:50,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111882482] [2020-10-21 23:17:50,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:50,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:50,677 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 23:17:50,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111882482] [2020-10-21 23:17:50,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:50,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:17:50,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263817385] [2020-10-21 23:17:50,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:17:50,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:50,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:17:50,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:17:50,681 INFO L87 Difference]: Start difference. First operand 9111 states and 41667 transitions. Second operand 7 states. [2020-10-21 23:17:51,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:51,099 INFO L93 Difference]: Finished difference Result 20926 states and 85293 transitions. [2020-10-21 23:17:51,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:17:51,099 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-21 23:17:51,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:51,155 INFO L225 Difference]: With dead ends: 20926 [2020-10-21 23:17:51,155 INFO L226 Difference]: Without dead ends: 20889 [2020-10-21 23:17:51,156 INFO L677 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 [2020-10-21 23:17:51,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20889 states. [2020-10-21 23:17:51,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20889 to 9002. [2020-10-21 23:17:51,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9002 states. [2020-10-21 23:17:51,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9002 states to 9002 states and 41147 transitions. [2020-10-21 23:17:51,524 INFO L78 Accepts]: Start accepts. Automaton has 9002 states and 41147 transitions. Word has length 23 [2020-10-21 23:17:51,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:51,524 INFO L481 AbstractCegarLoop]: Abstraction has 9002 states and 41147 transitions. [2020-10-21 23:17:51,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:17:51,524 INFO L276 IsEmpty]: Start isEmpty. Operand 9002 states and 41147 transitions. [2020-10-21 23:17:51,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 23:17:51,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:51,526 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:51,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-21 23:17:51,527 INFO L429 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]=== [2020-10-21 23:17:51,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:51,527 INFO L82 PathProgramCache]: Analyzing trace with hash 65703370, now seen corresponding path program 2 times [2020-10-21 23:17:51,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:51,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781654036] [2020-10-21 23:17:51,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:51,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:51,582 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 23:17:51,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781654036] [2020-10-21 23:17:51,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:51,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:17:51,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427738404] [2020-10-21 23:17:51,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:17:51,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:51,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:17:51,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:17:51,584 INFO L87 Difference]: Start difference. First operand 9002 states and 41147 transitions. Second operand 7 states. [2020-10-21 23:17:51,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:51,982 INFO L93 Difference]: Finished difference Result 20671 states and 84034 transitions. [2020-10-21 23:17:51,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:17:51,982 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-21 23:17:51,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:52,038 INFO L225 Difference]: With dead ends: 20671 [2020-10-21 23:17:52,038 INFO L226 Difference]: Without dead ends: 20634 [2020-10-21 23:17:52,038 INFO L677 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 [2020-10-21 23:17:52,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20634 states. [2020-10-21 23:17:52,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20634 to 8910. [2020-10-21 23:17:52,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8910 states. [2020-10-21 23:17:52,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8910 states to 8910 states and 40716 transitions. [2020-10-21 23:17:52,384 INFO L78 Accepts]: Start accepts. Automaton has 8910 states and 40716 transitions. Word has length 23 [2020-10-21 23:17:52,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:52,385 INFO L481 AbstractCegarLoop]: Abstraction has 8910 states and 40716 transitions. [2020-10-21 23:17:52,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:17:52,385 INFO L276 IsEmpty]: Start isEmpty. Operand 8910 states and 40716 transitions. [2020-10-21 23:17:52,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 23:17:52,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:52,387 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:52,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-21 23:17:52,387 INFO L429 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]=== [2020-10-21 23:17:52,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:52,387 INFO L82 PathProgramCache]: Analyzing trace with hash 65695651, now seen corresponding path program 1 times [2020-10-21 23:17:52,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:52,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847189198] [2020-10-21 23:17:52,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:52,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:52,447 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 23:17:52,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847189198] [2020-10-21 23:17:52,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:52,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:17:52,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863359798] [2020-10-21 23:17:52,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:17:52,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:52,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:17:52,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:17:52,449 INFO L87 Difference]: Start difference. First operand 8910 states and 40716 transitions. Second operand 7 states. [2020-10-21 23:17:52,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:52,887 INFO L93 Difference]: Finished difference Result 21060 states and 85755 transitions. [2020-10-21 23:17:52,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:17:52,888 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-21 23:17:52,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:52,940 INFO L225 Difference]: With dead ends: 21060 [2020-10-21 23:17:52,941 INFO L226 Difference]: Without dead ends: 21023 [2020-10-21 23:17:52,941 INFO L677 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 [2020-10-21 23:17:53,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21023 states. [2020-10-21 23:17:53,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21023 to 9327. [2020-10-21 23:17:53,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9327 states. [2020-10-21 23:17:53,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9327 states to 9327 states and 42562 transitions. [2020-10-21 23:17:53,461 INFO L78 Accepts]: Start accepts. Automaton has 9327 states and 42562 transitions. Word has length 23 [2020-10-21 23:17:53,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:53,462 INFO L481 AbstractCegarLoop]: Abstraction has 9327 states and 42562 transitions. [2020-10-21 23:17:53,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:17:53,462 INFO L276 IsEmpty]: Start isEmpty. Operand 9327 states and 42562 transitions. [2020-10-21 23:17:53,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 23:17:53,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:53,464 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:53,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-21 23:17:53,464 INFO L429 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]=== [2020-10-21 23:17:53,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:53,464 INFO L82 PathProgramCache]: Analyzing trace with hash 61469731, now seen corresponding path program 2 times [2020-10-21 23:17:53,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:53,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272748620] [2020-10-21 23:17:53,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:53,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:53,515 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 23:17:53,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272748620] [2020-10-21 23:17:53,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:53,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:17:53,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084874524] [2020-10-21 23:17:53,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:17:53,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:53,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:17:53,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:17:53,517 INFO L87 Difference]: Start difference. First operand 9327 states and 42562 transitions. Second operand 7 states. [2020-10-21 23:17:53,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:53,923 INFO L93 Difference]: Finished difference Result 21207 states and 86283 transitions. [2020-10-21 23:17:53,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:17:53,924 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-21 23:17:53,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:53,975 INFO L225 Difference]: With dead ends: 21207 [2020-10-21 23:17:53,975 INFO L226 Difference]: Without dead ends: 21170 [2020-10-21 23:17:53,976 INFO L677 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 [2020-10-21 23:17:54,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21170 states. [2020-10-21 23:17:54,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21170 to 9426. [2020-10-21 23:17:54,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9426 states. [2020-10-21 23:17:54,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9426 states to 9426 states and 43057 transitions. [2020-10-21 23:17:54,330 INFO L78 Accepts]: Start accepts. Automaton has 9426 states and 43057 transitions. Word has length 23 [2020-10-21 23:17:54,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:54,330 INFO L481 AbstractCegarLoop]: Abstraction has 9426 states and 43057 transitions. [2020-10-21 23:17:54,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:17:54,330 INFO L276 IsEmpty]: Start isEmpty. Operand 9426 states and 43057 transitions. [2020-10-21 23:17:54,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:17:54,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:54,333 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:54,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-21 23:17:54,334 INFO L429 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]=== [2020-10-21 23:17:54,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:54,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1893562914, now seen corresponding path program 1 times [2020-10-21 23:17:54,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:54,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024485490] [2020-10-21 23:17:54,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:54,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:54,404 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 23:17:54,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024485490] [2020-10-21 23:17:54,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049187674] [2020-10-21 23:17:54,405 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 [2020-10-21 23:17:54,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:54,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:17:54,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:17:54,610 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 23:17:54,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:17:54,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 23:17:54,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394636260] [2020-10-21 23:17:54,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 23:17:54,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:54,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 23:17:54,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 23:17:54,612 INFO L87 Difference]: Start difference. First operand 9426 states and 43057 transitions. Second operand 16 states. [2020-10-21 23:17:55,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:55,670 INFO L93 Difference]: Finished difference Result 30145 states and 115754 transitions. [2020-10-21 23:17:55,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:17:55,671 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-21 23:17:55,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:55,750 INFO L225 Difference]: With dead ends: 30145 [2020-10-21 23:17:55,750 INFO L226 Difference]: Without dead ends: 30125 [2020-10-21 23:17:55,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-21 23:17:55,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30125 states. [2020-10-21 23:17:56,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30125 to 9346. [2020-10-21 23:17:56,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9346 states. [2020-10-21 23:17:56,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9346 states to 9346 states and 42602 transitions. [2020-10-21 23:17:56,458 INFO L78 Accepts]: Start accepts. Automaton has 9346 states and 42602 transitions. Word has length 25 [2020-10-21 23:17:56,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:56,458 INFO L481 AbstractCegarLoop]: Abstraction has 9346 states and 42602 transitions. [2020-10-21 23:17:56,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 23:17:56,458 INFO L276 IsEmpty]: Start isEmpty. Operand 9346 states and 42602 transitions. [2020-10-21 23:17:56,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:17:56,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:56,461 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:56,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-10-21 23:17:56,662 INFO L429 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]=== [2020-10-21 23:17:56,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:56,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1121885022, now seen corresponding path program 2 times [2020-10-21 23:17:56,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:56,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70088074] [2020-10-21 23:17:56,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:56,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:56,732 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:17:56,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70088074] [2020-10-21 23:17:56,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074697449] [2020-10-21 23:17:56,733 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 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 [2020-10-21 23:17:56,820 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 23:17:56,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:17:56,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:17:56,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:17:56,934 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:17:56,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:17:56,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 23:17:56,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266861370] [2020-10-21 23:17:56,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 23:17:56,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:56,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 23:17:56,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 23:17:56,936 INFO L87 Difference]: Start difference. First operand 9346 states and 42602 transitions. Second operand 16 states. [2020-10-21 23:17:58,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:58,064 INFO L93 Difference]: Finished difference Result 29656 states and 113703 transitions. [2020-10-21 23:17:58,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:17:58,065 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-21 23:17:58,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:58,146 INFO L225 Difference]: With dead ends: 29656 [2020-10-21 23:17:58,146 INFO L226 Difference]: Without dead ends: 29634 [2020-10-21 23:17:58,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-21 23:17:58,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29634 states. [2020-10-21 23:17:58,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29634 to 9343. [2020-10-21 23:17:58,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9343 states. [2020-10-21 23:17:58,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9343 states to 9343 states and 42547 transitions. [2020-10-21 23:17:58,619 INFO L78 Accepts]: Start accepts. Automaton has 9343 states and 42547 transitions. Word has length 25 [2020-10-21 23:17:58,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:58,619 INFO L481 AbstractCegarLoop]: Abstraction has 9343 states and 42547 transitions. [2020-10-21 23:17:58,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 23:17:58,619 INFO L276 IsEmpty]: Start isEmpty. Operand 9343 states and 42547 transitions. [2020-10-21 23:17:58,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:17:58,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:58,623 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:58,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-10-21 23:17:58,823 INFO L429 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]=== [2020-10-21 23:17:58,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:58,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1121872591, now seen corresponding path program 1 times [2020-10-21 23:17:58,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:58,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545479478] [2020-10-21 23:17:58,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:58,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:58,894 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:17:58,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545479478] [2020-10-21 23:17:58,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832172793] [2020-10-21 23:17:58,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:17:58,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:58,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:17:58,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:17:59,100 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:17:59,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:17:59,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 23:17:59,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224365730] [2020-10-21 23:17:59,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 23:17:59,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:59,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 23:17:59,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 23:17:59,101 INFO L87 Difference]: Start difference. First operand 9343 states and 42547 transitions. Second operand 16 states. [2020-10-21 23:18:00,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:18:00,166 INFO L93 Difference]: Finished difference Result 29316 states and 112409 transitions. [2020-10-21 23:18:00,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:18:00,167 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-21 23:18:00,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:18:00,241 INFO L225 Difference]: With dead ends: 29316 [2020-10-21 23:18:00,242 INFO L226 Difference]: Without dead ends: 29296 [2020-10-21 23:18:00,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-21 23:18:00,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29296 states. [2020-10-21 23:18:00,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29296 to 9260. [2020-10-21 23:18:00,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9260 states. [2020-10-21 23:18:00,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9260 states to 9260 states and 42114 transitions. [2020-10-21 23:18:00,926 INFO L78 Accepts]: Start accepts. Automaton has 9260 states and 42114 transitions. Word has length 25 [2020-10-21 23:18:00,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:18:00,926 INFO L481 AbstractCegarLoop]: Abstraction has 9260 states and 42114 transitions. [2020-10-21 23:18:00,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 23:18:00,926 INFO L276 IsEmpty]: Start isEmpty. Operand 9260 states and 42114 transitions. [2020-10-21 23:18:00,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:18:00,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:18:00,929 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:18:01,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-10-21 23:18:01,130 INFO L429 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]=== [2020-10-21 23:18:01,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:18:01,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1126098511, now seen corresponding path program 2 times [2020-10-21 23:18:01,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:18:01,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299381510] [2020-10-21 23:18:01,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:18:01,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:01,213 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:18:01,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299381510] [2020-10-21 23:18:01,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812650059] [2020-10-21 23:18:01,213 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:18:01,308 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 23:18:01,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:18:01,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:18:01,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:18:01,425 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:18:01,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:18:01,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 23:18:01,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145401820] [2020-10-21 23:18:01,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 23:18:01,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:18:01,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 23:18:01,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 23:18:01,427 INFO L87 Difference]: Start difference. First operand 9260 states and 42114 transitions. Second operand 16 states. [2020-10-21 23:18:02,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:18:02,580 INFO L93 Difference]: Finished difference Result 29093 states and 111462 transitions. [2020-10-21 23:18:02,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:18:02,581 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-21 23:18:02,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:18:02,649 INFO L225 Difference]: With dead ends: 29093 [2020-10-21 23:18:02,650 INFO L226 Difference]: Without dead ends: 29071 [2020-10-21 23:18:02,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-21 23:18:02,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29071 states. [2020-10-21 23:18:03,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29071 to 9176. [2020-10-21 23:18:03,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9176 states. [2020-10-21 23:18:03,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9176 states to 9176 states and 41695 transitions. [2020-10-21 23:18:03,102 INFO L78 Accepts]: Start accepts. Automaton has 9176 states and 41695 transitions. Word has length 25 [2020-10-21 23:18:03,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:18:03,102 INFO L481 AbstractCegarLoop]: Abstraction has 9176 states and 41695 transitions. [2020-10-21 23:18:03,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 23:18:03,103 INFO L276 IsEmpty]: Start isEmpty. Operand 9176 states and 41695 transitions. [2020-10-21 23:18:03,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:18:03,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:18:03,106 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:18:03,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:18:03,306 INFO L429 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]=== [2020-10-21 23:18:03,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:18:03,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1814954082, now seen corresponding path program 3 times [2020-10-21 23:18:03,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:18:03,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503050798] [2020-10-21 23:18:03,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:18:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:03,398 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:18:03,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503050798] [2020-10-21 23:18:03,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576905989] [2020-10-21 23:18:03,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:18:03,496 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-21 23:18:03,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:18:03,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:18:03,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:18:03,643 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:18:03,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:18:03,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 23:18:03,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741042268] [2020-10-21 23:18:03,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 23:18:03,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:18:03,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 23:18:03,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 23:18:03,646 INFO L87 Difference]: Start difference. First operand 9176 states and 41695 transitions. Second operand 16 states. [2020-10-21 23:18:04,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:18:04,619 INFO L93 Difference]: Finished difference Result 29030 states and 111196 transitions. [2020-10-21 23:18:04,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:18:04,619 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-21 23:18:04,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:18:04,686 INFO L225 Difference]: With dead ends: 29030 [2020-10-21 23:18:04,687 INFO L226 Difference]: Without dead ends: 29010 [2020-10-21 23:18:04,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-21 23:18:04,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29010 states. [2020-10-21 23:18:05,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29010 to 9004. [2020-10-21 23:18:05,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9004 states. [2020-10-21 23:18:05,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9004 states to 9004 states and 40905 transitions. [2020-10-21 23:18:05,288 INFO L78 Accepts]: Start accepts. Automaton has 9004 states and 40905 transitions. Word has length 25 [2020-10-21 23:18:05,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:18:05,288 INFO L481 AbstractCegarLoop]: Abstraction has 9004 states and 40905 transitions. [2020-10-21 23:18:05,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 23:18:05,288 INFO L276 IsEmpty]: Start isEmpty. Operand 9004 states and 40905 transitions. [2020-10-21 23:18:05,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:18:05,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:18:05,291 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:18:05,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-10-21 23:18:05,492 INFO L429 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]=== [2020-10-21 23:18:05,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:18:05,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1734595810, now seen corresponding path program 4 times [2020-10-21 23:18:05,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:18:05,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296523482] [2020-10-21 23:18:05,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:18:05,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:05,563 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:18:05,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296523482] [2020-10-21 23:18:05,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337698737] [2020-10-21 23:18:05,563 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:18:05,665 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-21 23:18:05,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:18:05,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:18:05,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:18:05,815 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:18:05,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:18:05,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 23:18:05,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804118810] [2020-10-21 23:18:05,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 23:18:05,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:18:05,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 23:18:05,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 23:18:05,818 INFO L87 Difference]: Start difference. First operand 9004 states and 40905 transitions. Second operand 16 states. [2020-10-21 23:18:07,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:18:07,213 INFO L93 Difference]: Finished difference Result 29275 states and 112216 transitions. [2020-10-21 23:18:07,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:18:07,214 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-21 23:18:07,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:18:07,336 INFO L225 Difference]: With dead ends: 29275 [2020-10-21 23:18:07,336 INFO L226 Difference]: Without dead ends: 29253 [2020-10-21 23:18:07,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-21 23:18:07,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29253 states. [2020-10-21 23:18:07,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29253 to 9001. [2020-10-21 23:18:07,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9001 states. [2020-10-21 23:18:07,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9001 states to 9001 states and 40850 transitions. [2020-10-21 23:18:07,963 INFO L78 Accepts]: Start accepts. Automaton has 9001 states and 40850 transitions. Word has length 25 [2020-10-21 23:18:07,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:18:07,963 INFO L481 AbstractCegarLoop]: Abstraction has 9001 states and 40850 transitions. [2020-10-21 23:18:07,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 23:18:07,963 INFO L276 IsEmpty]: Start isEmpty. Operand 9001 states and 40850 transitions. [2020-10-21 23:18:07,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:18:07,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:18:07,967 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:18:08,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:18:08,168 INFO L429 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]=== [2020-10-21 23:18:08,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:18:08,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1734588091, now seen corresponding path program 1 times [2020-10-21 23:18:08,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:18:08,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813845517] [2020-10-21 23:18:08,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:18:08,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:08,234 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:18:08,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813845517] [2020-10-21 23:18:08,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180382021] [2020-10-21 23:18:08,235 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 [2020-10-21 23:18:08,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:08,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:18:08,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:18:08,426 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:18:08,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:18:08,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 23:18:08,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762370608] [2020-10-21 23:18:08,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 23:18:08,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:18:08,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 23:18:08,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 23:18:08,428 INFO L87 Difference]: Start difference. First operand 9001 states and 40850 transitions. Second operand 16 states. [2020-10-21 23:18:09,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:18:09,560 INFO L93 Difference]: Finished difference Result 29105 states and 111801 transitions. [2020-10-21 23:18:09,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:18:09,561 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-21 23:18:09,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:18:09,641 INFO L225 Difference]: With dead ends: 29105 [2020-10-21 23:18:09,641 INFO L226 Difference]: Without dead ends: 29085 [2020-10-21 23:18:09,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-21 23:18:09,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29085 states. [2020-10-21 23:18:10,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29085 to 8951. [2020-10-21 23:18:10,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8951 states. [2020-10-21 23:18:10,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8951 states to 8951 states and 40581 transitions. [2020-10-21 23:18:10,101 INFO L78 Accepts]: Start accepts. Automaton has 8951 states and 40581 transitions. Word has length 25 [2020-10-21 23:18:10,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:18:10,102 INFO L481 AbstractCegarLoop]: Abstraction has 8951 states and 40581 transitions. [2020-10-21 23:18:10,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 23:18:10,102 INFO L276 IsEmpty]: Start isEmpty. Operand 8951 states and 40581 transitions. [2020-10-21 23:18:10,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:18:10,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:18:10,105 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:18:10,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:18:10,306 INFO L429 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]=== [2020-10-21 23:18:10,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:18:10,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1730362171, now seen corresponding path program 2 times [2020-10-21 23:18:10,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:18:10,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083492652] [2020-10-21 23:18:10,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:18:10,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:10,374 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:18:10,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083492652] [2020-10-21 23:18:10,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409942694] [2020-10-21 23:18:10,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:18:10,452 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 23:18:10,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:18:10,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:18:10,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:18:10,574 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:18:10,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:18:10,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 23:18:10,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424293943] [2020-10-21 23:18:10,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 23:18:10,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:18:10,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 23:18:10,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 23:18:10,577 INFO L87 Difference]: Start difference. First operand 8951 states and 40581 transitions. Second operand 16 states. [2020-10-21 23:18:11,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:18:11,844 INFO L93 Difference]: Finished difference Result 28806 states and 110558 transitions. [2020-10-21 23:18:11,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:18:11,844 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-21 23:18:11,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:18:11,916 INFO L225 Difference]: With dead ends: 28806 [2020-10-21 23:18:11,916 INFO L226 Difference]: Without dead ends: 28779 [2020-10-21 23:18:11,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-21 23:18:12,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28779 states. [2020-10-21 23:18:12,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28779 to 8841. [2020-10-21 23:18:12,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8841 states. [2020-10-21 23:18:12,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8841 states to 8841 states and 40058 transitions. [2020-10-21 23:18:12,340 INFO L78 Accepts]: Start accepts. Automaton has 8841 states and 40058 transitions. Word has length 25 [2020-10-21 23:18:12,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:18:12,341 INFO L481 AbstractCegarLoop]: Abstraction has 8841 states and 40058 transitions. [2020-10-21 23:18:12,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 23:18:12,341 INFO L276 IsEmpty]: Start isEmpty. Operand 8841 states and 40058 transitions. [2020-10-21 23:18:12,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:18:12,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:18:12,345 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:18:12,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2020-10-21 23:18:12,546 INFO L429 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]=== [2020-10-21 23:18:12,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:18:12,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1302913182, now seen corresponding path program 5 times [2020-10-21 23:18:12,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:18:12,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929283203] [2020-10-21 23:18:12,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:18:12,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:12,611 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 23:18:12,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929283203] [2020-10-21 23:18:12,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:18:12,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:18:12,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812560622] [2020-10-21 23:18:12,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:18:12,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:18:12,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:18:12,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:18:12,612 INFO L87 Difference]: Start difference. First operand 8841 states and 40058 transitions. Second operand 9 states. [2020-10-21 23:18:13,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:18:13,610 INFO L93 Difference]: Finished difference Result 28597 states and 109522 transitions. [2020-10-21 23:18:13,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:18:13,611 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 23:18:13,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:18:13,678 INFO L225 Difference]: With dead ends: 28597 [2020-10-21 23:18:13,678 INFO L226 Difference]: Without dead ends: 28577 [2020-10-21 23:18:13,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 23:18:13,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28577 states. [2020-10-21 23:18:14,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28577 to 8616. [2020-10-21 23:18:14,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8616 states. [2020-10-21 23:18:14,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8616 states to 8616 states and 39029 transitions. [2020-10-21 23:18:14,097 INFO L78 Accepts]: Start accepts. Automaton has 8616 states and 39029 transitions. Word has length 25 [2020-10-21 23:18:14,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:18:14,097 INFO L481 AbstractCegarLoop]: Abstraction has 8616 states and 39029 transitions. [2020-10-21 23:18:14,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:18:14,097 INFO L276 IsEmpty]: Start isEmpty. Operand 8616 states and 39029 transitions. [2020-10-21 23:18:14,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:18:14,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:18:14,101 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:18:14,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-21 23:18:14,101 INFO L429 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]=== [2020-10-21 23:18:14,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:18:14,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1302920901, now seen corresponding path program 3 times [2020-10-21 23:18:14,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:18:14,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381070761] [2020-10-21 23:18:14,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:18:14,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:14,171 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 23:18:14,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381070761] [2020-10-21 23:18:14,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:18:14,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:18:14,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372050512] [2020-10-21 23:18:14,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:18:14,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:18:14,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:18:14,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:18:14,172 INFO L87 Difference]: Start difference. First operand 8616 states and 39029 transitions. Second operand 9 states. [2020-10-21 23:18:15,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:18:15,133 INFO L93 Difference]: Finished difference Result 28374 states and 108800 transitions. [2020-10-21 23:18:15,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:18:15,134 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 23:18:15,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:18:15,209 INFO L225 Difference]: With dead ends: 28374 [2020-10-21 23:18:15,209 INFO L226 Difference]: Without dead ends: 28354 [2020-10-21 23:18:15,210 INFO L677 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 [2020-10-21 23:18:15,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28354 states. [2020-10-21 23:18:15,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28354 to 8466. [2020-10-21 23:18:15,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8466 states. [2020-10-21 23:18:15,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8466 states to 8466 states and 38348 transitions. [2020-10-21 23:18:15,779 INFO L78 Accepts]: Start accepts. Automaton has 8466 states and 38348 transitions. Word has length 25 [2020-10-21 23:18:15,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:18:15,779 INFO L481 AbstractCegarLoop]: Abstraction has 8466 states and 38348 transitions. [2020-10-21 23:18:15,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:18:15,779 INFO L276 IsEmpty]: Start isEmpty. Operand 8466 states and 38348 transitions. [2020-10-21 23:18:15,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:18:15,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:18:15,783 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:18:15,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-21 23:18:15,783 INFO L429 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]=== [2020-10-21 23:18:15,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:18:15,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1283569182, now seen corresponding path program 6 times [2020-10-21 23:18:15,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:18:15,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235730111] [2020-10-21 23:18:15,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:18:15,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:15,839 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 23:18:15,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235730111] [2020-10-21 23:18:15,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:18:15,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:18:15,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867318245] [2020-10-21 23:18:15,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:18:15,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:18:15,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:18:15,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:18:15,841 INFO L87 Difference]: Start difference. First operand 8466 states and 38348 transitions. Second operand 9 states. [2020-10-21 23:18:17,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:18:17,159 INFO L93 Difference]: Finished difference Result 27919 states and 106695 transitions. [2020-10-21 23:18:17,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:18:17,160 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 23:18:17,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:18:17,282 INFO L225 Difference]: With dead ends: 27919 [2020-10-21 23:18:17,282 INFO L226 Difference]: Without dead ends: 27892 [2020-10-21 23:18:17,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 23:18:17,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27892 states. [2020-10-21 23:18:17,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27892 to 8151. [2020-10-21 23:18:17,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8151 states. [2020-10-21 23:18:17,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8151 states to 8151 states and 36997 transitions. [2020-10-21 23:18:18,000 INFO L78 Accepts]: Start accepts. Automaton has 8151 states and 36997 transitions. Word has length 25 [2020-10-21 23:18:18,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:18:18,000 INFO L481 AbstractCegarLoop]: Abstraction has 8151 states and 36997 transitions. [2020-10-21 23:18:18,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:18:18,001 INFO L276 IsEmpty]: Start isEmpty. Operand 8151 states and 36997 transitions. [2020-10-21 23:18:18,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:18:18,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:18:18,005 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:18:18,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-21 23:18:18,006 INFO L429 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]=== [2020-10-21 23:18:18,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:18:18,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1283556751, now seen corresponding path program 3 times [2020-10-21 23:18:18,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:18:18,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666551558] [2020-10-21 23:18:18,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:18:18,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:18,083 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 23:18:18,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666551558] [2020-10-21 23:18:18,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:18:18,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:18:18,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285526610] [2020-10-21 23:18:18,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:18:18,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:18:18,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:18:18,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:18:18,084 INFO L87 Difference]: Start difference. First operand 8151 states and 36997 transitions. Second operand 9 states. [2020-10-21 23:18:19,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:18:19,115 INFO L93 Difference]: Finished difference Result 27732 states and 106194 transitions. [2020-10-21 23:18:19,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:18:19,116 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 23:18:19,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:18:19,178 INFO L225 Difference]: With dead ends: 27732 [2020-10-21 23:18:19,178 INFO L226 Difference]: Without dead ends: 27712 [2020-10-21 23:18:19,178 INFO L677 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 [2020-10-21 23:18:19,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27712 states. [2020-10-21 23:18:19,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27712 to 8053. [2020-10-21 23:18:19,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8053 states. [2020-10-21 23:18:19,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8053 states to 8053 states and 36561 transitions. [2020-10-21 23:18:19,574 INFO L78 Accepts]: Start accepts. Automaton has 8053 states and 36561 transitions. Word has length 25 [2020-10-21 23:18:19,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:18:19,575 INFO L481 AbstractCegarLoop]: Abstraction has 8053 states and 36561 transitions. [2020-10-21 23:18:19,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:18:19,575 INFO L276 IsEmpty]: Start isEmpty. Operand 8053 states and 36561 transitions. [2020-10-21 23:18:19,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:18:19,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:18:19,578 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:18:19,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2020-10-21 23:18:19,578 INFO L429 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]=== [2020-10-21 23:18:19,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:18:19,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1290987141, now seen corresponding path program 4 times [2020-10-21 23:18:19,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:18:19,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008145684] [2020-10-21 23:18:19,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:18:19,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:19,661 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 23:18:19,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008145684] [2020-10-21 23:18:19,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:18:19,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:18:19,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501569403] [2020-10-21 23:18:19,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:18:19,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:18:19,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:18:19,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:18:19,664 INFO L87 Difference]: Start difference. First operand 8053 states and 36561 transitions. Second operand 9 states. [2020-10-21 23:18:20,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:18:20,641 INFO L93 Difference]: Finished difference Result 27752 states and 106300 transitions. [2020-10-21 23:18:20,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:18:20,642 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 23:18:20,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:18:20,718 INFO L225 Difference]: With dead ends: 27752 [2020-10-21 23:18:20,718 INFO L226 Difference]: Without dead ends: 27725 [2020-10-21 23:18:20,719 INFO L677 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 [2020-10-21 23:18:20,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27725 states. [2020-10-21 23:18:21,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27725 to 8053. [2020-10-21 23:18:21,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8053 states. [2020-10-21 23:18:21,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8053 states to 8053 states and 36529 transitions. [2020-10-21 23:18:21,141 INFO L78 Accepts]: Start accepts. Automaton has 8053 states and 36529 transitions. Word has length 25 [2020-10-21 23:18:21,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:18:21,141 INFO L481 AbstractCegarLoop]: Abstraction has 8053 states and 36529 transitions. [2020-10-21 23:18:21,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:18:21,141 INFO L276 IsEmpty]: Start isEmpty. Operand 8053 states and 36529 transitions. [2020-10-21 23:18:21,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:18:21,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:18:21,145 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:18:21,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-21 23:18:21,145 INFO L429 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]=== [2020-10-21 23:18:21,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:18:21,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1290966991, now seen corresponding path program 4 times [2020-10-21 23:18:21,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:18:21,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071159050] [2020-10-21 23:18:21,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:18:21,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:21,220 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 23:18:21,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071159050] [2020-10-21 23:18:21,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:18:21,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:18:21,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665751990] [2020-10-21 23:18:21,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:18:21,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:18:21,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:18:21,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:18:21,222 INFO L87 Difference]: Start difference. First operand 8053 states and 36529 transitions. Second operand 9 states. [2020-10-21 23:18:22,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:18:22,232 INFO L93 Difference]: Finished difference Result 27429 states and 105043 transitions. [2020-10-21 23:18:22,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:18:22,233 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 23:18:22,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:18:22,297 INFO L225 Difference]: With dead ends: 27429 [2020-10-21 23:18:22,297 INFO L226 Difference]: Without dead ends: 27402 [2020-10-21 23:18:22,297 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 23:18:22,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27402 states. [2020-10-21 23:18:22,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27402 to 7996. [2020-10-21 23:18:22,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7996 states. [2020-10-21 23:18:22,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7996 states to 7996 states and 36246 transitions. [2020-10-21 23:18:22,686 INFO L78 Accepts]: Start accepts. Automaton has 7996 states and 36246 transitions. Word has length 25 [2020-10-21 23:18:22,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:18:22,686 INFO L481 AbstractCegarLoop]: Abstraction has 7996 states and 36246 transitions. [2020-10-21 23:18:22,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:18:22,686 INFO L276 IsEmpty]: Start isEmpty. Operand 7996 states and 36246 transitions. [2020-10-21 23:18:22,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:18:22,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:18:22,689 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:18:22,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-21 23:18:22,690 INFO L429 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]=== [2020-10-21 23:18:22,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:18:22,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1806156920, now seen corresponding path program 1 times [2020-10-21 23:18:22,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:18:22,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528642118] [2020-10-21 23:18:22,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:18:22,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:22,725 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-21 23:18:22,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528642118] [2020-10-21 23:18:22,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:18:22,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:18:22,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135266159] [2020-10-21 23:18:22,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:18:22,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:18:22,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:18:22,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:18:22,727 INFO L87 Difference]: Start difference. First operand 7996 states and 36246 transitions. Second operand 5 states. [2020-10-21 23:18:22,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:18:22,924 INFO L93 Difference]: Finished difference Result 13000 states and 56551 transitions. [2020-10-21 23:18:22,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:18:22,925 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-21 23:18:22,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:18:22,960 INFO L225 Difference]: With dead ends: 13000 [2020-10-21 23:18:22,960 INFO L226 Difference]: Without dead ends: 12968 [2020-10-21 23:18:22,960 INFO L677 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 [2020-10-21 23:18:23,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12968 states. [2020-10-21 23:18:23,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12968 to 9425. [2020-10-21 23:18:23,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9425 states. [2020-10-21 23:18:23,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9425 states to 9425 states and 42312 transitions. [2020-10-21 23:18:23,221 INFO L78 Accepts]: Start accepts. Automaton has 9425 states and 42312 transitions. Word has length 25 [2020-10-21 23:18:23,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:18:23,221 INFO L481 AbstractCegarLoop]: Abstraction has 9425 states and 42312 transitions. [2020-10-21 23:18:23,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:18:23,221 INFO L276 IsEmpty]: Start isEmpty. Operand 9425 states and 42312 transitions. [2020-10-21 23:18:23,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:18:23,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:18:23,224 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:18:23,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-21 23:18:23,224 INFO L429 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]=== [2020-10-21 23:18:23,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:18:23,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1073288645, now seen corresponding path program 5 times [2020-10-21 23:18:23,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:18:23,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308185384] [2020-10-21 23:18:23,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:18:23,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:23,299 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 23:18:23,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308185384] [2020-10-21 23:18:23,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:18:23,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:18:23,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131089310] [2020-10-21 23:18:23,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:18:23,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:18:23,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:18:23,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:18:23,300 INFO L87 Difference]: Start difference. First operand 9425 states and 42312 transitions. Second operand 9 states. [2020-10-21 23:18:24,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:18:24,592 INFO L93 Difference]: Finished difference Result 30960 states and 119709 transitions. [2020-10-21 23:18:24,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:18:24,593 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 23:18:24,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:18:24,709 INFO L225 Difference]: With dead ends: 30960 [2020-10-21 23:18:24,709 INFO L226 Difference]: Without dead ends: 30934 [2020-10-21 23:18:24,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 23:18:24,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30934 states. [2020-10-21 23:18:25,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30934 to 9270. [2020-10-21 23:18:25,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9270 states. [2020-10-21 23:18:25,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9270 states to 9270 states and 41573 transitions. [2020-10-21 23:18:25,311 INFO L78 Accepts]: Start accepts. Automaton has 9270 states and 41573 transitions. Word has length 25 [2020-10-21 23:18:25,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:18:25,311 INFO L481 AbstractCegarLoop]: Abstraction has 9270 states and 41573 transitions. [2020-10-21 23:18:25,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:18:25,311 INFO L276 IsEmpty]: Start isEmpty. Operand 9270 states and 41573 transitions. [2020-10-21 23:18:25,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:18:25,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:18:25,315 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:18:25,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-10-21 23:18:25,315 INFO L429 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]=== [2020-10-21 23:18:25,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:18:25,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1057128965, now seen corresponding path program 6 times [2020-10-21 23:18:25,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:18:25,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497269173] [2020-10-21 23:18:25,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:18:25,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:25,383 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 23:18:25,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497269173] [2020-10-21 23:18:25,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:18:25,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:18:25,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79766100] [2020-10-21 23:18:25,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:18:25,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:18:25,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:18:25,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:18:25,384 INFO L87 Difference]: Start difference. First operand 9270 states and 41573 transitions. Second operand 9 states. [2020-10-21 23:18:26,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:18:26,446 INFO L93 Difference]: Finished difference Result 30557 states and 118001 transitions. [2020-10-21 23:18:26,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:18:26,447 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 23:18:26,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:18:26,520 INFO L225 Difference]: With dead ends: 30557 [2020-10-21 23:18:26,520 INFO L226 Difference]: Without dead ends: 30524 [2020-10-21 23:18:26,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 23:18:26,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30524 states. [2020-10-21 23:18:27,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30524 to 9003. [2020-10-21 23:18:27,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9003 states. [2020-10-21 23:18:27,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9003 states to 9003 states and 40426 transitions. [2020-10-21 23:18:27,125 INFO L78 Accepts]: Start accepts. Automaton has 9003 states and 40426 transitions. Word has length 25 [2020-10-21 23:18:27,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:18:27,125 INFO L481 AbstractCegarLoop]: Abstraction has 9003 states and 40426 transitions. [2020-10-21 23:18:27,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:18:27,125 INFO L276 IsEmpty]: Start isEmpty. Operand 9003 states and 40426 transitions. [2020-10-21 23:18:27,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:18:27,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:18:27,128 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:18:27,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-10-21 23:18:27,128 INFO L429 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]=== [2020-10-21 23:18:27,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:18:27,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1057108815, now seen corresponding path program 5 times [2020-10-21 23:18:27,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:18:27,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779617186] [2020-10-21 23:18:27,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:18:27,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:27,198 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 23:18:27,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779617186] [2020-10-21 23:18:27,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:18:27,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:18:27,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554632784] [2020-10-21 23:18:27,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:18:27,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:18:27,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:18:27,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:18:27,200 INFO L87 Difference]: Start difference. First operand 9003 states and 40426 transitions. Second operand 9 states. [2020-10-21 23:18:28,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:18:28,197 INFO L93 Difference]: Finished difference Result 30154 states and 116397 transitions. [2020-10-21 23:18:28,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:18:28,198 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 23:18:28,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:18:28,271 INFO L225 Difference]: With dead ends: 30154 [2020-10-21 23:18:28,271 INFO L226 Difference]: Without dead ends: 30128 [2020-10-21 23:18:28,272 INFO L677 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 [2020-10-21 23:18:28,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30128 states. [2020-10-21 23:18:28,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30128 to 8901. [2020-10-21 23:18:28,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8901 states. [2020-10-21 23:18:28,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8901 states to 8901 states and 39944 transitions. [2020-10-21 23:18:28,704 INFO L78 Accepts]: Start accepts. Automaton has 8901 states and 39944 transitions. Word has length 25 [2020-10-21 23:18:28,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:18:28,704 INFO L481 AbstractCegarLoop]: Abstraction has 8901 states and 39944 transitions. [2020-10-21 23:18:28,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:18:28,704 INFO L276 IsEmpty]: Start isEmpty. Operand 8901 states and 39944 transitions. [2020-10-21 23:18:28,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:18:28,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:18:28,707 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:18:28,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-10-21 23:18:28,707 INFO L429 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]=== [2020-10-21 23:18:28,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:18:28,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1053924495, now seen corresponding path program 6 times [2020-10-21 23:18:28,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:18:28,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191606672] [2020-10-21 23:18:28,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:18:28,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:28,785 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 23:18:28,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191606672] [2020-10-21 23:18:28,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:18:28,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:18:28,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776908211] [2020-10-21 23:18:28,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:18:28,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:18:28,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:18:28,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:18:28,787 INFO L87 Difference]: Start difference. First operand 8901 states and 39944 transitions. Second operand 9 states. [2020-10-21 23:18:29,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:18:29,885 INFO L93 Difference]: Finished difference Result 29876 states and 115200 transitions. [2020-10-21 23:18:29,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:18:29,885 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 23:18:29,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:18:29,957 INFO L225 Difference]: With dead ends: 29876 [2020-10-21 23:18:29,958 INFO L226 Difference]: Without dead ends: 29843 [2020-10-21 23:18:29,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 23:18:30,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29843 states. [2020-10-21 23:18:30,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29843 to 8560. [2020-10-21 23:18:30,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8560 states. [2020-10-21 23:18:30,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8560 states to 8560 states and 38495 transitions. [2020-10-21 23:18:30,407 INFO L78 Accepts]: Start accepts. Automaton has 8560 states and 38495 transitions. Word has length 25 [2020-10-21 23:18:30,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:18:30,408 INFO L481 AbstractCegarLoop]: Abstraction has 8560 states and 38495 transitions. [2020-10-21 23:18:30,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:18:30,408 INFO L276 IsEmpty]: Start isEmpty. Operand 8560 states and 38495 transitions. [2020-10-21 23:18:30,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-21 23:18:30,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:18:30,412 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:18:30,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-10-21 23:18:30,412 INFO L429 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]=== [2020-10-21 23:18:30,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:18:30,412 INFO L82 PathProgramCache]: Analyzing trace with hash 150081278, now seen corresponding path program 1 times [2020-10-21 23:18:30,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:18:30,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566064838] [2020-10-21 23:18:30,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:18:30,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 23:18:30,420 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 23:18:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 23:18:30,427 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 23:18:30,437 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-21 23:18:30,437 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-21 23:18:30,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-10-21 23:18:30,437 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-21 23:18:30,438 WARN L371 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-21 23:18:30,438 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-10-21 23:18:30,459 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,459 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,459 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,459 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,459 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,460 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,460 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,460 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,460 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,460 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,460 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,460 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,460 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,461 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,461 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,461 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,461 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,461 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,461 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,461 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,461 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,462 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,462 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,462 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,462 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,462 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,462 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,462 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,462 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,463 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,463 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,463 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,463 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,463 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,463 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,463 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,463 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,464 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,464 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,464 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,464 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,464 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,464 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,464 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,465 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,465 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,465 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,465 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,465 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,465 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,465 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,465 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,465 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,466 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,466 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,466 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,466 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,466 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,466 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,466 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,467 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,467 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,467 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,467 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,467 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,467 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,467 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,467 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,468 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,468 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,468 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,468 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,468 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,468 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,468 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,468 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,468 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,469 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,469 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,469 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,469 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,469 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,469 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,469 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,469 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,470 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,470 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,470 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,470 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,470 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,470 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,470 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,470 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,471 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,471 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,471 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,471 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,471 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,471 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,471 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,472 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,472 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,472 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,472 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,472 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,472 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,472 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,472 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,472 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,473 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,473 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,473 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,473 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,473 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,473 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,473 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,473 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,473 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,474 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,474 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,474 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,474 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,474 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,474 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,474 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,474 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,474 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,475 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,475 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,475 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,475 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,476 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,476 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,476 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,476 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,477 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,477 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,477 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,478 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,478 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,478 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,478 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,479 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,479 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,479 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,479 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,480 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,480 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,480 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,480 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,480 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,481 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,481 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,482 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,482 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,482 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,483 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,483 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,483 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,483 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,483 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,484 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,484 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,484 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,484 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,485 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,485 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,485 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,485 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,485 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,485 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,486 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,487 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,487 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,487 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,487 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,487 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,487 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,487 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,487 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,488 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,488 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,488 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,489 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,489 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,489 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,489 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,489 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,491 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,491 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,491 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,491 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,491 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,491 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,491 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,491 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,492 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,492 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,492 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,492 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,493 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,493 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,493 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,493 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,494 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-21 23:18:30,494 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-10-21 23:18:30,494 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 23:18:30,494 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 23:18:30,494 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-21 23:18:30,494 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 23:18:30,494 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 23:18:30,494 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 23:18:30,494 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 23:18:30,494 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 23:18:30,496 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-21 23:18:30,496 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 184 places, 172 transitions, 464 flow [2020-10-21 23:18:30,496 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 184 places, 172 transitions, 464 flow [2020-10-21 23:18:30,496 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 184 places, 172 transitions, 464 flow [2020-10-21 23:18:30,516 INFO L129 PetriNetUnfolder]: 10/182 cut-off events. [2020-10-21 23:18:30,517 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-10-21 23:18:30,518 INFO L80 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 182 events. 10/182 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 320 event pairs, 0 based on Foata normal form. 0/164 useless extension candidates. Maximal degree in co-relation 217. Up to 14 conditions per place. [2020-10-21 23:18:30,524 INFO L116 LiptonReduction]: Number of co-enabled transitions 3372 [2020-10-21 23:18:32,685 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2020-10-21 23:18:33,380 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 63 [2020-10-21 23:18:33,789 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 96 [2020-10-21 23:18:33,936 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-21 23:18:33,971 INFO L131 LiptonReduction]: Checked pairs total: 5911 [2020-10-21 23:18:33,971 INFO L133 LiptonReduction]: Total number of compositions: 191 [2020-10-21 23:18:33,971 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 45 transitions, 210 flow [2020-10-21 23:18:35,645 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 18584 states. [2020-10-21 23:18:35,645 INFO L276 IsEmpty]: Start isEmpty. Operand 18584 states. [2020-10-21 23:18:35,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-21 23:18:35,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:18:35,646 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-21 23:18:35,646 INFO L429 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]=== [2020-10-21 23:18:35,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:18:35,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1689038, now seen corresponding path program 1 times [2020-10-21 23:18:35,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:18:35,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188837940] [2020-10-21 23:18:35,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:18:35,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:35,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:18:35,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188837940] [2020-10-21 23:18:35,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:18:35,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-21 23:18:35,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124310317] [2020-10-21 23:18:35,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 23:18:35,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:18:35,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 23:18:35,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:18:35,661 INFO L87 Difference]: Start difference. First operand 18584 states. Second operand 3 states. [2020-10-21 23:18:35,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:18:35,817 INFO L93 Difference]: Finished difference Result 17885 states and 92755 transitions. [2020-10-21 23:18:35,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 23:18:35,818 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-21 23:18:35,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:18:35,872 INFO L225 Difference]: With dead ends: 17885 [2020-10-21 23:18:35,872 INFO L226 Difference]: Without dead ends: 16791 [2020-10-21 23:18:35,872 INFO L677 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 [2020-10-21 23:18:36,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16791 states. [2020-10-21 23:18:36,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16791 to 16791. [2020-10-21 23:18:36,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16791 states. [2020-10-21 23:18:36,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16791 states to 16791 states and 86558 transitions. [2020-10-21 23:18:36,612 INFO L78 Accepts]: Start accepts. Automaton has 16791 states and 86558 transitions. Word has length 3 [2020-10-21 23:18:36,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:18:36,612 INFO L481 AbstractCegarLoop]: Abstraction has 16791 states and 86558 transitions. [2020-10-21 23:18:36,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 23:18:36,612 INFO L276 IsEmpty]: Start isEmpty. Operand 16791 states and 86558 transitions. [2020-10-21 23:18:36,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 23:18:36,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:18:36,612 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:18:36,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2020-10-21 23:18:36,612 INFO L429 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]=== [2020-10-21 23:18:36,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:18:36,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1195163712, now seen corresponding path program 1 times [2020-10-21 23:18:36,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:18:36,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664924879] [2020-10-21 23:18:36,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:18:36,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:36,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:18:36,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664924879] [2020-10-21 23:18:36,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:18:36,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:18:36,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420239953] [2020-10-21 23:18:36,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:18:36,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:18:36,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:18:36,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:18:36,656 INFO L87 Difference]: Start difference. First operand 16791 states and 86558 transitions. Second operand 5 states. [2020-10-21 23:18:36,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:18:36,941 INFO L93 Difference]: Finished difference Result 30985 states and 150574 transitions. [2020-10-21 23:18:36,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:18:36,941 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-21 23:18:36,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:18:37,034 INFO L225 Difference]: With dead ends: 30985 [2020-10-21 23:18:37,034 INFO L226 Difference]: Without dead ends: 30977 [2020-10-21 23:18:37,035 INFO L677 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 [2020-10-21 23:18:37,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30977 states. [2020-10-21 23:18:39,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30977 to 19868. [2020-10-21 23:18:39,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19868 states. [2020-10-21 23:18:39,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19868 states to 19868 states and 103363 transitions. [2020-10-21 23:18:39,761 INFO L78 Accepts]: Start accepts. Automaton has 19868 states and 103363 transitions. Word has length 9 [2020-10-21 23:18:39,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:18:39,762 INFO L481 AbstractCegarLoop]: Abstraction has 19868 states and 103363 transitions. [2020-10-21 23:18:39,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:18:39,762 INFO L276 IsEmpty]: Start isEmpty. Operand 19868 states and 103363 transitions. [2020-10-21 23:18:39,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 23:18:39,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:18:39,762 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:18:39,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2020-10-21 23:18:39,763 INFO L429 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]=== [2020-10-21 23:18:39,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:18:39,763 INFO L82 PathProgramCache]: Analyzing trace with hash 749431237, now seen corresponding path program 1 times [2020-10-21 23:18:39,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:18:39,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973741629] [2020-10-21 23:18:39,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:18:39,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:39,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 23:18:39,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973741629] [2020-10-21 23:18:39,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:18:39,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:18:39,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880191888] [2020-10-21 23:18:39,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:18:39,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:18:39,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:18:39,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:18:39,806 INFO L87 Difference]: Start difference. First operand 19868 states and 103363 transitions. Second operand 5 states. [2020-10-21 23:18:40,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:18:40,125 INFO L93 Difference]: Finished difference Result 36296 states and 178836 transitions. [2020-10-21 23:18:40,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:18:40,125 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-21 23:18:40,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:18:40,243 INFO L225 Difference]: With dead ends: 36296 [2020-10-21 23:18:40,244 INFO L226 Difference]: Without dead ends: 36280 [2020-10-21 23:18:40,244 INFO L677 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 [2020-10-21 23:18:40,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36280 states. [2020-10-21 23:18:41,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36280 to 23806. [2020-10-21 23:18:41,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23806 states. [2020-10-21 23:18:41,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23806 states to 23806 states and 125455 transitions. [2020-10-21 23:18:41,409 INFO L78 Accepts]: Start accepts. Automaton has 23806 states and 125455 transitions. Word has length 13 [2020-10-21 23:18:41,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:18:41,409 INFO L481 AbstractCegarLoop]: Abstraction has 23806 states and 125455 transitions. [2020-10-21 23:18:41,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:18:41,409 INFO L276 IsEmpty]: Start isEmpty. Operand 23806 states and 125455 transitions. [2020-10-21 23:18:41,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-21 23:18:41,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:18:41,409 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:18:41,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2020-10-21 23:18:41,410 INFO L429 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]=== [2020-10-21 23:18:41,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:18:41,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1975297452, now seen corresponding path program 1 times [2020-10-21 23:18:41,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:18:41,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329082790] [2020-10-21 23:18:41,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:18:41,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:41,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:18:41,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329082790] [2020-10-21 23:18:41,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012230376] [2020-10-21 23:18:41,457 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 [2020-10-21 23:18:41,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:41,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-21 23:18:41,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:18:41,617 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:18:41,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:18:41,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-21 23:18:41,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392739174] [2020-10-21 23:18:41,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-21 23:18:41,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:18:41,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-21 23:18:41,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-21 23:18:41,620 INFO L87 Difference]: Start difference. First operand 23806 states and 125455 transitions. Second operand 12 states. [2020-10-21 23:18:42,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:18:42,304 INFO L93 Difference]: Finished difference Result 56720 states and 262685 transitions. [2020-10-21 23:18:42,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:18:42,304 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-21 23:18:42,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:18:42,482 INFO L225 Difference]: With dead ends: 56720 [2020-10-21 23:18:42,482 INFO L226 Difference]: Without dead ends: 56704 [2020-10-21 23:18:42,483 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-21 23:18:43,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56704 states. [2020-10-21 23:18:45,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56704 to 23629. [2020-10-21 23:18:45,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23629 states. [2020-10-21 23:18:46,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23629 states to 23629 states and 124418 transitions. [2020-10-21 23:18:46,063 INFO L78 Accepts]: Start accepts. Automaton has 23629 states and 124418 transitions. Word has length 15 [2020-10-21 23:18:46,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:18:46,064 INFO L481 AbstractCegarLoop]: Abstraction has 23629 states and 124418 transitions. [2020-10-21 23:18:46,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-21 23:18:46,064 INFO L276 IsEmpty]: Start isEmpty. Operand 23629 states and 124418 transitions. [2020-10-21 23:18:46,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-21 23:18:46,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:18:46,064 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:18:46,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2020-10-21 23:18:46,265 INFO L429 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]=== [2020-10-21 23:18:46,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:18:46,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1351073514, now seen corresponding path program 2 times [2020-10-21 23:18:46,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:18:46,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544244862] [2020-10-21 23:18:46,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:18:46,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:46,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 23:18:46,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544244862] [2020-10-21 23:18:46,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:18:46,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:18:46,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151051192] [2020-10-21 23:18:46,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:18:46,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:18:46,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:18:46,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:18:46,314 INFO L87 Difference]: Start difference. First operand 23629 states and 124418 transitions. Second operand 7 states. [2020-10-21 23:18:46,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:18:46,960 INFO L93 Difference]: Finished difference Result 58078 states and 269185 transitions. [2020-10-21 23:18:46,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:18:46,961 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-21 23:18:46,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:18:47,160 INFO L225 Difference]: With dead ends: 58078 [2020-10-21 23:18:47,160 INFO L226 Difference]: Without dead ends: 58061 [2020-10-21 23:18:47,161 INFO L677 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 [2020-10-21 23:18:47,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58061 states. [2020-10-21 23:18:48,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58061 to 23109. [2020-10-21 23:18:48,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23109 states. [2020-10-21 23:18:48,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23109 states to 23109 states and 121651 transitions. [2020-10-21 23:18:48,686 INFO L78 Accepts]: Start accepts. Automaton has 23109 states and 121651 transitions. Word has length 15 [2020-10-21 23:18:48,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:18:48,686 INFO L481 AbstractCegarLoop]: Abstraction has 23109 states and 121651 transitions. [2020-10-21 23:18:48,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:18:48,687 INFO L276 IsEmpty]: Start isEmpty. Operand 23109 states and 121651 transitions. [2020-10-21 23:18:48,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-21 23:18:48,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:18:48,687 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:18:48,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2020-10-21 23:18:48,687 INFO L429 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]=== [2020-10-21 23:18:48,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:18:48,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1256878032, now seen corresponding path program 1 times [2020-10-21 23:18:48,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:18:48,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028447013] [2020-10-21 23:18:48,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:18:48,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:48,729 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:18:48,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028447013] [2020-10-21 23:18:48,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:18:48,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:18:48,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139277878] [2020-10-21 23:18:48,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:18:48,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:18:48,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:18:48,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:18:48,731 INFO L87 Difference]: Start difference. First operand 23109 states and 121651 transitions. Second operand 5 states. [2020-10-21 23:18:49,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:18:49,101 INFO L93 Difference]: Finished difference Result 41885 states and 209629 transitions. [2020-10-21 23:18:49,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:18:49,101 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-21 23:18:49,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:18:49,986 INFO L225 Difference]: With dead ends: 41885 [2020-10-21 23:18:49,986 INFO L226 Difference]: Without dead ends: 41856 [2020-10-21 23:18:49,987 INFO L677 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 [2020-10-21 23:18:50,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41856 states. [2020-10-21 23:18:51,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41856 to 28237. [2020-10-21 23:18:51,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28237 states. [2020-10-21 23:18:51,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28237 states to 28237 states and 150261 transitions. [2020-10-21 23:18:51,306 INFO L78 Accepts]: Start accepts. Automaton has 28237 states and 150261 transitions. Word has length 17 [2020-10-21 23:18:51,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:18:51,306 INFO L481 AbstractCegarLoop]: Abstraction has 28237 states and 150261 transitions. [2020-10-21 23:18:51,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:18:51,307 INFO L276 IsEmpty]: Start isEmpty. Operand 28237 states and 150261 transitions. [2020-10-21 23:18:51,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 23:18:51,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:18:51,307 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:18:51,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2020-10-21 23:18:51,307 INFO L429 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]=== [2020-10-21 23:18:51,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:18:51,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1122599135, now seen corresponding path program 1 times [2020-10-21 23:18:51,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:18:51,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78181917] [2020-10-21 23:18:51,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:18:51,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:51,351 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 23:18:51,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78181917] [2020-10-21 23:18:51,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404496882] [2020-10-21 23:18:51,352 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 [2020-10-21 23:18:51,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:51,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-21 23:18:51,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:18:51,511 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 23:18:51,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:18:51,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-21 23:18:51,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196854542] [2020-10-21 23:18:51,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-21 23:18:51,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:18:51,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-21 23:18:51,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-21 23:18:51,513 INFO L87 Difference]: Start difference. First operand 28237 states and 150261 transitions. Second operand 12 states. [2020-10-21 23:18:52,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:18:52,279 INFO L93 Difference]: Finished difference Result 66831 states and 314874 transitions. [2020-10-21 23:18:52,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:18:52,280 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-21 23:18:52,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:18:52,490 INFO L225 Difference]: With dead ends: 66831 [2020-10-21 23:18:52,490 INFO L226 Difference]: Without dead ends: 66807 [2020-10-21 23:18:52,491 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-21 23:18:53,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66807 states. [2020-10-21 23:18:56,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66807 to 28673. [2020-10-21 23:18:56,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28673 states. [2020-10-21 23:18:56,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28673 states to 28673 states and 152375 transitions. [2020-10-21 23:18:56,848 INFO L78 Accepts]: Start accepts. Automaton has 28673 states and 152375 transitions. Word has length 19 [2020-10-21 23:18:56,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:18:56,848 INFO L481 AbstractCegarLoop]: Abstraction has 28673 states and 152375 transitions. [2020-10-21 23:18:56,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-21 23:18:56,848 INFO L276 IsEmpty]: Start isEmpty. Operand 28673 states and 152375 transitions. [2020-10-21 23:18:56,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 23:18:56,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:18:56,849 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:18:57,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2020-10-21 23:18:57,063 INFO L429 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]=== [2020-10-21 23:18:57,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:18:57,063 INFO L82 PathProgramCache]: Analyzing trace with hash -30740687, now seen corresponding path program 1 times [2020-10-21 23:18:57,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:18:57,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894988291] [2020-10-21 23:18:57,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:18:57,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:57,109 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 23:18:57,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894988291] [2020-10-21 23:18:57,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639331852] [2020-10-21 23:18:57,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-10-21 23:18:57,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:57,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-21 23:18:57,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:18:57,273 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 23:18:57,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:18:57,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-21 23:18:57,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459660900] [2020-10-21 23:18:57,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-21 23:18:57,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:18:57,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-21 23:18:57,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-21 23:18:57,274 INFO L87 Difference]: Start difference. First operand 28673 states and 152375 transitions. Second operand 12 states. [2020-10-21 23:18:58,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:18:58,002 INFO L93 Difference]: Finished difference Result 69484 states and 328264 transitions. [2020-10-21 23:18:58,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:18:58,003 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-21 23:18:58,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:18:58,240 INFO L225 Difference]: With dead ends: 69484 [2020-10-21 23:18:58,240 INFO L226 Difference]: Without dead ends: 69451 [2020-10-21 23:18:58,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-21 23:18:59,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69451 states. [2020-10-21 23:18:59,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69451 to 28873. [2020-10-21 23:18:59,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28873 states. [2020-10-21 23:19:00,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28873 states to 28873 states and 153454 transitions. [2020-10-21 23:19:00,056 INFO L78 Accepts]: Start accepts. Automaton has 28873 states and 153454 transitions. Word has length 19 [2020-10-21 23:19:00,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:19:00,056 INFO L481 AbstractCegarLoop]: Abstraction has 28873 states and 153454 transitions. [2020-10-21 23:19:00,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-21 23:19:00,056 INFO L276 IsEmpty]: Start isEmpty. Operand 28873 states and 153454 transitions. [2020-10-21 23:19:00,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 23:19:00,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:19:00,057 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:19:00,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:19:00,258 INFO L429 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]=== [2020-10-21 23:19:00,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:19:00,259 INFO L82 PathProgramCache]: Analyzing trace with hash 973992033, now seen corresponding path program 2 times [2020-10-21 23:19:00,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:19:00,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468322081] [2020-10-21 23:19:00,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:19:00,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:19:00,310 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:19:00,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468322081] [2020-10-21 23:19:00,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:19:00,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:19:00,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483456428] [2020-10-21 23:19:00,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:19:00,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:19:00,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:19:00,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:19:00,311 INFO L87 Difference]: Start difference. First operand 28873 states and 153454 transitions. Second operand 7 states. [2020-10-21 23:19:01,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:19:01,032 INFO L93 Difference]: Finished difference Result 70510 states and 333491 transitions. [2020-10-21 23:19:01,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:19:01,033 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-21 23:19:01,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:19:02,014 INFO L225 Difference]: With dead ends: 70510 [2020-10-21 23:19:02,014 INFO L226 Difference]: Without dead ends: 70477 [2020-10-21 23:19:02,014 INFO L677 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 [2020-10-21 23:19:02,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70477 states. [2020-10-21 23:19:03,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70477 to 28942. [2020-10-21 23:19:03,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28942 states. [2020-10-21 23:19:03,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28942 states to 28942 states and 153921 transitions. [2020-10-21 23:19:03,749 INFO L78 Accepts]: Start accepts. Automaton has 28942 states and 153921 transitions. Word has length 19 [2020-10-21 23:19:03,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:19:03,749 INFO L481 AbstractCegarLoop]: Abstraction has 28942 states and 153921 transitions. [2020-10-21 23:19:03,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:19:03,749 INFO L276 IsEmpty]: Start isEmpty. Operand 28942 states and 153921 transitions. [2020-10-21 23:19:03,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 23:19:03,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:19:03,750 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:19:03,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2020-10-21 23:19:03,750 INFO L429 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]=== [2020-10-21 23:19:03,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:19:03,751 INFO L82 PathProgramCache]: Analyzing trace with hash 973976719, now seen corresponding path program 2 times [2020-10-21 23:19:03,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:19:03,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792256733] [2020-10-21 23:19:03,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:19:03,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:19:03,796 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:19:03,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792256733] [2020-10-21 23:19:03,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:19:03,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:19:03,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801886946] [2020-10-21 23:19:03,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:19:03,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:19:03,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:19:03,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:19:03,798 INFO L87 Difference]: Start difference. First operand 28942 states and 153921 transitions. Second operand 7 states. [2020-10-21 23:19:04,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:19:04,506 INFO L93 Difference]: Finished difference Result 70096 states and 331298 transitions. [2020-10-21 23:19:04,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:19:04,507 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-21 23:19:04,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:19:04,742 INFO L225 Difference]: With dead ends: 70096 [2020-10-21 23:19:04,742 INFO L226 Difference]: Without dead ends: 70063 [2020-10-21 23:19:04,742 INFO L677 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 [2020-10-21 23:19:05,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70063 states. [2020-10-21 23:19:06,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70063 to 29094. [2020-10-21 23:19:06,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29094 states. [2020-10-21 23:19:07,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29094 states to 29094 states and 154883 transitions. [2020-10-21 23:19:07,088 INFO L78 Accepts]: Start accepts. Automaton has 29094 states and 154883 transitions. Word has length 19 [2020-10-21 23:19:07,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:19:07,088 INFO L481 AbstractCegarLoop]: Abstraction has 29094 states and 154883 transitions. [2020-10-21 23:19:07,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:19:07,088 INFO L276 IsEmpty]: Start isEmpty. Operand 29094 states and 154883 transitions. [2020-10-21 23:19:07,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:19:07,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:19:07,089 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:19:07,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2020-10-21 23:19:07,090 INFO L429 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]=== [2020-10-21 23:19:07,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:19:07,090 INFO L82 PathProgramCache]: Analyzing trace with hash -223741824, now seen corresponding path program 1 times [2020-10-21 23:19:07,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:19:07,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705924798] [2020-10-21 23:19:07,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:19:07,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:19:07,157 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:19:07,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705924798] [2020-10-21 23:19:07,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975262452] [2020-10-21 23:19:07,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-10-21 23:19:07,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:19:07,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:19:07,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:19:07,375 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:19:07,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:19:07,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 23:19:07,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844714657] [2020-10-21 23:19:07,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 23:19:07,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:19:07,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 23:19:07,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 23:19:07,376 INFO L87 Difference]: Start difference. First operand 29094 states and 154883 transitions. Second operand 16 states. [2020-10-21 23:19:08,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:19:08,937 INFO L93 Difference]: Finished difference Result 100731 states and 448596 transitions. [2020-10-21 23:19:08,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:19:08,938 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-21 23:19:08,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:19:09,234 INFO L225 Difference]: With dead ends: 100731 [2020-10-21 23:19:09,234 INFO L226 Difference]: Without dead ends: 100715 [2020-10-21 23:19:09,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-21 23:19:10,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100715 states. [2020-10-21 23:19:11,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100715 to 28719. [2020-10-21 23:19:11,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28719 states. [2020-10-21 23:19:12,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28719 states to 28719 states and 152760 transitions. [2020-10-21 23:19:12,025 INFO L78 Accepts]: Start accepts. Automaton has 28719 states and 152760 transitions. Word has length 21 [2020-10-21 23:19:12,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:19:12,025 INFO L481 AbstractCegarLoop]: Abstraction has 28719 states and 152760 transitions. [2020-10-21 23:19:12,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 23:19:12,025 INFO L276 IsEmpty]: Start isEmpty. Operand 28719 states and 152760 transitions. [2020-10-21 23:19:12,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:19:12,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:19:12,026 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:19:12,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:19:12,227 INFO L429 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]=== [2020-10-21 23:19:12,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:19:12,228 INFO L82 PathProgramCache]: Analyzing trace with hash 780975582, now seen corresponding path program 2 times [2020-10-21 23:19:12,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:19:12,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843415776] [2020-10-21 23:19:12,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:19:12,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:19:12,304 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 23:19:12,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843415776] [2020-10-21 23:19:12,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760552739] [2020-10-21 23:19:12,305 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 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 [2020-10-21 23:19:12,402 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 23:19:12,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:19:12,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:19:12,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:19:12,523 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 23:19:12,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:19:12,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 23:19:12,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711962283] [2020-10-21 23:19:12,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 23:19:12,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:19:12,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 23:19:12,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 23:19:12,525 INFO L87 Difference]: Start difference. First operand 28719 states and 152760 transitions. Second operand 16 states. [2020-10-21 23:19:14,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:19:14,056 INFO L93 Difference]: Finished difference Result 99876 states and 444348 transitions. [2020-10-21 23:19:14,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:19:14,057 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-21 23:19:14,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:19:14,371 INFO L225 Difference]: With dead ends: 99876 [2020-10-21 23:19:14,372 INFO L226 Difference]: Without dead ends: 99855 [2020-10-21 23:19:14,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-21 23:19:15,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99855 states. [2020-10-21 23:19:16,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99855 to 28343. [2020-10-21 23:19:16,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28343 states. [2020-10-21 23:19:17,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28343 states to 28343 states and 150639 transitions. [2020-10-21 23:19:17,086 INFO L78 Accepts]: Start accepts. Automaton has 28343 states and 150639 transitions. Word has length 21 [2020-10-21 23:19:17,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:19:17,086 INFO L481 AbstractCegarLoop]: Abstraction has 28343 states and 150639 transitions. [2020-10-21 23:19:17,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 23:19:17,086 INFO L276 IsEmpty]: Start isEmpty. Operand 28343 states and 150639 transitions. [2020-10-21 23:19:17,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:19:17,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:19:17,087 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:19:17,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2020-10-21 23:19:17,288 INFO L429 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]=== [2020-10-21 23:19:17,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:19:17,289 INFO L82 PathProgramCache]: Analyzing trace with hash -141594176, now seen corresponding path program 3 times [2020-10-21 23:19:17,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:19:17,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670882700] [2020-10-21 23:19:17,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:19:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:19:17,358 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 23:19:17,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670882700] [2020-10-21 23:19:17,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706438431] [2020-10-21 23:19:17,359 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 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 [2020-10-21 23:19:17,452 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-21 23:19:17,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:19:17,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:19:17,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:19:17,568 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 23:19:17,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:19:17,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 23:19:17,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363972998] [2020-10-21 23:19:17,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 23:19:17,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:19:17,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 23:19:17,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 23:19:17,570 INFO L87 Difference]: Start difference. First operand 28343 states and 150639 transitions. Second operand 16 states. [2020-10-21 23:19:19,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:19:19,115 INFO L93 Difference]: Finished difference Result 100071 states and 445291 transitions. [2020-10-21 23:19:19,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:19:19,116 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-21 23:19:19,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:19:19,417 INFO L225 Difference]: With dead ends: 100071 [2020-10-21 23:19:19,417 INFO L226 Difference]: Without dead ends: 100055 [2020-10-21 23:19:19,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-21 23:19:20,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100055 states. [2020-10-21 23:19:21,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100055 to 27654. [2020-10-21 23:19:21,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27654 states. [2020-10-21 23:19:22,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27654 states to 27654 states and 147080 transitions. [2020-10-21 23:19:22,039 INFO L78 Accepts]: Start accepts. Automaton has 27654 states and 147080 transitions. Word has length 21 [2020-10-21 23:19:22,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:19:22,039 INFO L481 AbstractCegarLoop]: Abstraction has 27654 states and 147080 transitions. [2020-10-21 23:19:22,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 23:19:22,039 INFO L276 IsEmpty]: Start isEmpty. Operand 27654 states and 147080 transitions. [2020-10-21 23:19:22,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:19:22,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:19:22,040 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:19:22,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:19:22,241 INFO L429 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]=== [2020-10-21 23:19:22,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:19:22,242 INFO L82 PathProgramCache]: Analyzing trace with hash 522984322, now seen corresponding path program 4 times [2020-10-21 23:19:22,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:19:22,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931023486] [2020-10-21 23:19:22,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:19:22,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:19:22,308 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 23:19:22,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931023486] [2020-10-21 23:19:22,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60165037] [2020-10-21 23:19:22,309 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 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 [2020-10-21 23:19:22,413 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-21 23:19:22,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:19:22,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:19:22,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:19:22,532 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 23:19:22,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:19:22,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 23:19:22,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849016765] [2020-10-21 23:19:22,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 23:19:22,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:19:22,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 23:19:22,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 23:19:22,534 INFO L87 Difference]: Start difference. First operand 27654 states and 147080 transitions. Second operand 16 states. [2020-10-21 23:19:24,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:19:24,498 INFO L93 Difference]: Finished difference Result 99523 states and 442763 transitions. [2020-10-21 23:19:24,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:19:24,499 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-21 23:19:24,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:19:24,836 INFO L225 Difference]: With dead ends: 99523 [2020-10-21 23:19:24,836 INFO L226 Difference]: Without dead ends: 99502 [2020-10-21 23:19:24,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-21 23:19:25,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99502 states. [2020-10-21 23:19:26,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99502 to 27278. [2020-10-21 23:19:26,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27278 states. [2020-10-21 23:19:26,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27278 states to 27278 states and 144959 transitions. [2020-10-21 23:19:26,904 INFO L78 Accepts]: Start accepts. Automaton has 27278 states and 144959 transitions. Word has length 21 [2020-10-21 23:19:26,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:19:26,904 INFO L481 AbstractCegarLoop]: Abstraction has 27278 states and 144959 transitions. [2020-10-21 23:19:26,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 23:19:26,904 INFO L276 IsEmpty]: Start isEmpty. Operand 27278 states and 144959 transitions. [2020-10-21 23:19:26,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:19:26,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:19:26,905 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:19:27,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2020-10-21 23:19:27,106 INFO L429 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]=== [2020-10-21 23:19:27,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:19:27,106 INFO L82 PathProgramCache]: Analyzing trace with hash -456681683, now seen corresponding path program 1 times [2020-10-21 23:19:27,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:19:27,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747843859] [2020-10-21 23:19:27,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:19:27,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:19:27,137 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 23:19:27,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747843859] [2020-10-21 23:19:27,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:19:27,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:19:27,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665908880] [2020-10-21 23:19:27,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:19:27,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:19:27,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:19:27,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:19:27,139 INFO L87 Difference]: Start difference. First operand 27278 states and 144959 transitions. Second operand 5 states. [2020-10-21 23:19:27,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:19:27,903 INFO L93 Difference]: Finished difference Result 48996 states and 248701 transitions. [2020-10-21 23:19:27,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:19:27,904 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-21 23:19:27,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:19:28,070 INFO L225 Difference]: With dead ends: 48996 [2020-10-21 23:19:28,070 INFO L226 Difference]: Without dead ends: 48950 [2020-10-21 23:19:28,070 INFO L677 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 [2020-10-21 23:19:28,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48950 states. [2020-10-21 23:19:29,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48950 to 33977. [2020-10-21 23:19:29,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33977 states. [2020-10-21 23:19:29,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33977 states to 33977 states and 181757 transitions. [2020-10-21 23:19:29,516 INFO L78 Accepts]: Start accepts. Automaton has 33977 states and 181757 transitions. Word has length 21 [2020-10-21 23:19:29,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:19:29,516 INFO L481 AbstractCegarLoop]: Abstraction has 33977 states and 181757 transitions. [2020-10-21 23:19:29,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:19:29,516 INFO L276 IsEmpty]: Start isEmpty. Operand 33977 states and 181757 transitions. [2020-10-21 23:19:29,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:19:29,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:19:29,517 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:19:29,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2020-10-21 23:19:29,517 INFO L429 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]=== [2020-10-21 23:19:29,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:19:29,518 INFO L82 PathProgramCache]: Analyzing trace with hash -296528672, now seen corresponding path program 5 times [2020-10-21 23:19:29,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:19:29,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867439583] [2020-10-21 23:19:29,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:19:29,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:19:29,583 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:19:29,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867439583] [2020-10-21 23:19:29,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:19:29,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:19:29,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290605111] [2020-10-21 23:19:29,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:19:29,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:19:29,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:19:29,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:19:29,585 INFO L87 Difference]: Start difference. First operand 33977 states and 181757 transitions. Second operand 9 states. [2020-10-21 23:19:31,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:19:31,054 INFO L93 Difference]: Finished difference Result 115584 states and 523727 transitions. [2020-10-21 23:19:31,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:19:31,055 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-21 23:19:31,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:19:32,146 INFO L225 Difference]: With dead ends: 115584 [2020-10-21 23:19:32,147 INFO L226 Difference]: Without dead ends: 115559 [2020-10-21 23:19:32,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 23:19:33,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115559 states. [2020-10-21 23:19:34,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115559 to 33074. [2020-10-21 23:19:34,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33074 states. [2020-10-21 23:19:34,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33074 states to 33074 states and 176935 transitions. [2020-10-21 23:19:34,562 INFO L78 Accepts]: Start accepts. Automaton has 33074 states and 176935 transitions. Word has length 21 [2020-10-21 23:19:34,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:19:34,562 INFO L481 AbstractCegarLoop]: Abstraction has 33074 states and 176935 transitions. [2020-10-21 23:19:34,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:19:34,562 INFO L276 IsEmpty]: Start isEmpty. Operand 33074 states and 176935 transitions. [2020-10-21 23:19:34,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:19:34,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:19:34,563 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:19:34,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2020-10-21 23:19:34,564 INFO L429 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]=== [2020-10-21 23:19:34,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:19:34,564 INFO L82 PathProgramCache]: Analyzing trace with hash -311230112, now seen corresponding path program 6 times [2020-10-21 23:19:34,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:19:34,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200921646] [2020-10-21 23:19:34,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:19:34,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:19:34,629 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:19:34,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200921646] [2020-10-21 23:19:34,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:19:34,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:19:34,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163424192] [2020-10-21 23:19:34,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:19:34,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:19:34,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:19:34,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:19:34,630 INFO L87 Difference]: Start difference. First operand 33074 states and 176935 transitions. Second operand 9 states. [2020-10-21 23:19:36,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:19:36,548 INFO L93 Difference]: Finished difference Result 114402 states and 517732 transitions. [2020-10-21 23:19:36,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:19:36,549 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-21 23:19:36,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:19:36,918 INFO L225 Difference]: With dead ends: 114402 [2020-10-21 23:19:36,918 INFO L226 Difference]: Without dead ends: 114371 [2020-10-21 23:19:36,918 INFO L677 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 [2020-10-21 23:19:38,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114371 states. [2020-10-21 23:19:39,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114371 to 31960. [2020-10-21 23:19:39,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31960 states. [2020-10-21 23:19:43,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31960 states to 31960 states and 171209 transitions. [2020-10-21 23:19:43,397 INFO L78 Accepts]: Start accepts. Automaton has 31960 states and 171209 transitions. Word has length 21 [2020-10-21 23:19:43,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:19:43,398 INFO L481 AbstractCegarLoop]: Abstraction has 31960 states and 171209 transitions. [2020-10-21 23:19:43,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:19:43,398 INFO L276 IsEmpty]: Start isEmpty. Operand 31960 states and 171209 transitions. [2020-10-21 23:19:43,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 23:19:43,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:19:43,399 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:19:43,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2020-10-21 23:19:43,400 INFO L429 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]=== [2020-10-21 23:19:43,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:19:43,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1247180612, now seen corresponding path program 1 times [2020-10-21 23:19:43,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:19:43,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78937055] [2020-10-21 23:19:43,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:19:43,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:19:43,447 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-21 23:19:43,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78937055] [2020-10-21 23:19:43,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489960405] [2020-10-21 23:19:43,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 23:19:43,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:19:43,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-21 23:19:43,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:19:43,616 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-21 23:19:43,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:19:43,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-21 23:19:43,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615451460] [2020-10-21 23:19:43,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-21 23:19:43,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:19:43,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-21 23:19:43,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-21 23:19:43,617 INFO L87 Difference]: Start difference. First operand 31960 states and 171209 transitions. Second operand 12 states. [2020-10-21 23:19:44,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:19:44,443 INFO L93 Difference]: Finished difference Result 75380 states and 361389 transitions. [2020-10-21 23:19:44,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:19:44,443 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-21 23:19:44,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:19:44,688 INFO L225 Difference]: With dead ends: 75380 [2020-10-21 23:19:44,688 INFO L226 Difference]: Without dead ends: 75344 [2020-10-21 23:19:44,689 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-21 23:19:45,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75344 states. [2020-10-21 23:19:46,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75344 to 32974. [2020-10-21 23:19:46,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32974 states. [2020-10-21 23:19:46,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32974 states to 32974 states and 176363 transitions. [2020-10-21 23:19:46,590 INFO L78 Accepts]: Start accepts. Automaton has 32974 states and 176363 transitions. Word has length 23 [2020-10-21 23:19:46,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:19:46,590 INFO L481 AbstractCegarLoop]: Abstraction has 32974 states and 176363 transitions. [2020-10-21 23:19:46,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-21 23:19:46,591 INFO L276 IsEmpty]: Start isEmpty. Operand 32974 states and 176363 transitions. [2020-10-21 23:19:46,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 23:19:46,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:19:46,592 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:19:46,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:19:46,793 INFO L429 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]=== [2020-10-21 23:19:46,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:19:46,794 INFO L82 PathProgramCache]: Analyzing trace with hash -83395058, now seen corresponding path program 1 times [2020-10-21 23:19:46,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:19:46,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625303786] [2020-10-21 23:19:46,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:19:46,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:19:46,840 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-21 23:19:46,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625303786] [2020-10-21 23:19:46,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377216825] [2020-10-21 23:19:46,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:19:46,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:19:46,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-21 23:19:46,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:19:47,008 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-21 23:19:47,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:19:47,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-21 23:19:47,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717566923] [2020-10-21 23:19:47,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-21 23:19:47,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:19:47,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-21 23:19:47,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-21 23:19:47,010 INFO L87 Difference]: Start difference. First operand 32974 states and 176363 transitions. Second operand 12 states. [2020-10-21 23:19:48,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:19:48,101 INFO L93 Difference]: Finished difference Result 79487 states and 381757 transitions. [2020-10-21 23:19:48,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:19:48,102 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-21 23:19:48,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:19:48,361 INFO L225 Difference]: With dead ends: 79487 [2020-10-21 23:19:48,361 INFO L226 Difference]: Without dead ends: 79445 [2020-10-21 23:19:48,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-21 23:19:49,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79445 states. [2020-10-21 23:19:50,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79445 to 33981. [2020-10-21 23:19:50,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33981 states. [2020-10-21 23:19:50,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33981 states to 33981 states and 181710 transitions. [2020-10-21 23:19:50,304 INFO L78 Accepts]: Start accepts. Automaton has 33981 states and 181710 transitions. Word has length 23 [2020-10-21 23:19:50,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:19:50,304 INFO L481 AbstractCegarLoop]: Abstraction has 33981 states and 181710 transitions. [2020-10-21 23:19:50,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-21 23:19:50,304 INFO L276 IsEmpty]: Start isEmpty. Operand 33981 states and 181710 transitions. [2020-10-21 23:19:50,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 23:19:50,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:19:50,306 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:19:50,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,28 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:19:50,507 INFO L429 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]=== [2020-10-21 23:19:50,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:19:50,507 INFO L82 PathProgramCache]: Analyzing trace with hash 859803225, now seen corresponding path program 1 times [2020-10-21 23:19:50,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:19:50,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052497679] [2020-10-21 23:19:50,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:19:50,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:19:50,559 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-21 23:19:50,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052497679] [2020-10-21 23:19:50,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485073484] [2020-10-21 23:19:50,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-10-21 23:19:50,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:19:50,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-21 23:19:50,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:19:50,715 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-21 23:19:50,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:19:50,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-21 23:19:50,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364753455] [2020-10-21 23:19:50,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-21 23:19:50,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:19:50,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-21 23:19:50,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-21 23:19:50,717 INFO L87 Difference]: Start difference. First operand 33981 states and 181710 transitions. Second operand 12 states. [2020-10-21 23:19:52,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:19:52,008 INFO L93 Difference]: Finished difference Result 82728 states and 398553 transitions. [2020-10-21 23:19:52,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:19:52,008 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-21 23:19:52,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:19:52,288 INFO L225 Difference]: With dead ends: 82728 [2020-10-21 23:19:52,288 INFO L226 Difference]: Without dead ends: 82673 [2020-10-21 23:19:52,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-21 23:19:53,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82673 states. [2020-10-21 23:19:54,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82673 to 34821. [2020-10-21 23:19:54,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34821 states. [2020-10-21 23:19:54,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34821 states to 34821 states and 186422 transitions. [2020-10-21 23:19:54,184 INFO L78 Accepts]: Start accepts. Automaton has 34821 states and 186422 transitions. Word has length 23 [2020-10-21 23:19:54,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:19:54,185 INFO L481 AbstractCegarLoop]: Abstraction has 34821 states and 186422 transitions. [2020-10-21 23:19:54,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-21 23:19:54,185 INFO L276 IsEmpty]: Start isEmpty. Operand 34821 states and 186422 transitions. [2020-10-21 23:19:54,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 23:19:54,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:19:54,187 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:19:54,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:19:54,387 INFO L429 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]=== [2020-10-21 23:19:54,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:19:54,388 INFO L82 PathProgramCache]: Analyzing trace with hash -784422783, now seen corresponding path program 2 times [2020-10-21 23:19:54,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:19:54,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292860829] [2020-10-21 23:19:54,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:19:54,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:19:54,433 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 23:19:54,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292860829] [2020-10-21 23:19:54,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:19:54,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:19:54,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534266313] [2020-10-21 23:19:54,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:19:54,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:19:54,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:19:54,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:19:54,435 INFO L87 Difference]: Start difference. First operand 34821 states and 186422 transitions. Second operand 7 states. [2020-10-21 23:19:55,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:19:55,612 INFO L93 Difference]: Finished difference Result 83487 states and 402661 transitions. [2020-10-21 23:19:55,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:19:55,613 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-21 23:19:55,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:19:55,859 INFO L225 Difference]: With dead ends: 83487 [2020-10-21 23:19:55,860 INFO L226 Difference]: Without dead ends: 83432 [2020-10-21 23:19:55,860 INFO L677 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 [2020-10-21 23:19:56,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83432 states. [2020-10-21 23:19:57,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83432 to 35694. [2020-10-21 23:19:57,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35694 states. [2020-10-21 23:19:57,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35694 states to 35694 states and 191145 transitions. [2020-10-21 23:19:57,934 INFO L78 Accepts]: Start accepts. Automaton has 35694 states and 191145 transitions. Word has length 23 [2020-10-21 23:19:57,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:19:57,934 INFO L481 AbstractCegarLoop]: Abstraction has 35694 states and 191145 transitions. [2020-10-21 23:19:57,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:19:57,934 INFO L276 IsEmpty]: Start isEmpty. Operand 35694 states and 191145 transitions. [2020-10-21 23:19:57,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 23:19:57,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:19:57,936 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:19:57,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2020-10-21 23:19:57,936 INFO L429 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]=== [2020-10-21 23:19:57,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:19:57,937 INFO L82 PathProgramCache]: Analyzing trace with hash -784419714, now seen corresponding path program 2 times [2020-10-21 23:19:57,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:19:57,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20745670] [2020-10-21 23:19:57,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:19:57,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:19:57,994 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 23:19:57,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20745670] [2020-10-21 23:19:57,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:19:57,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:19:57,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343227684] [2020-10-21 23:19:57,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:19:57,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:19:57,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:19:57,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:19:57,996 INFO L87 Difference]: Start difference. First operand 35694 states and 191145 transitions. Second operand 7 states. [2020-10-21 23:19:58,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:19:58,804 INFO L93 Difference]: Finished difference Result 83543 states and 402494 transitions. [2020-10-21 23:19:58,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:19:58,805 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-21 23:19:58,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:19:59,705 INFO L225 Difference]: With dead ends: 83543 [2020-10-21 23:19:59,705 INFO L226 Difference]: Without dead ends: 83488 [2020-10-21 23:19:59,705 INFO L677 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 [2020-10-21 23:20:00,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83488 states. [2020-10-21 23:20:01,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83488 to 36306. [2020-10-21 23:20:01,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36306 states. [2020-10-21 23:20:01,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36306 states to 36306 states and 194552 transitions. [2020-10-21 23:20:01,750 INFO L78 Accepts]: Start accepts. Automaton has 36306 states and 194552 transitions. Word has length 23 [2020-10-21 23:20:01,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:20:01,750 INFO L481 AbstractCegarLoop]: Abstraction has 36306 states and 194552 transitions. [2020-10-21 23:20:01,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:20:01,750 INFO L276 IsEmpty]: Start isEmpty. Operand 36306 states and 194552 transitions. [2020-10-21 23:20:01,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 23:20:01,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:20:01,753 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:20:01,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2020-10-21 23:20:01,753 INFO L429 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]=== [2020-10-21 23:20:01,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:20:01,754 INFO L82 PathProgramCache]: Analyzing trace with hash -784435028, now seen corresponding path program 2 times [2020-10-21 23:20:01,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:20:01,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467441168] [2020-10-21 23:20:01,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:20:01,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:20:01,811 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 23:20:01,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467441168] [2020-10-21 23:20:01,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:20:01,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:20:01,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907072171] [2020-10-21 23:20:01,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:20:01,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:20:01,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:20:01,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:20:01,813 INFO L87 Difference]: Start difference. First operand 36306 states and 194552 transitions. Second operand 7 states. [2020-10-21 23:20:02,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:20:02,617 INFO L93 Difference]: Finished difference Result 83918 states and 404136 transitions. [2020-10-21 23:20:02,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:20:02,618 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-21 23:20:02,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:20:02,907 INFO L225 Difference]: With dead ends: 83918 [2020-10-21 23:20:02,907 INFO L226 Difference]: Without dead ends: 83863 [2020-10-21 23:20:02,907 INFO L677 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 [2020-10-21 23:20:04,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83863 states. [2020-10-21 23:20:05,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83863 to 37062. [2020-10-21 23:20:05,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37062 states. [2020-10-21 23:20:05,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37062 states to 37062 states and 198528 transitions. [2020-10-21 23:20:05,532 INFO L78 Accepts]: Start accepts. Automaton has 37062 states and 198528 transitions. Word has length 23 [2020-10-21 23:20:05,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:20:05,532 INFO L481 AbstractCegarLoop]: Abstraction has 37062 states and 198528 transitions. [2020-10-21 23:20:05,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:20:05,532 INFO L276 IsEmpty]: Start isEmpty. Operand 37062 states and 198528 transitions. [2020-10-21 23:20:05,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:20:05,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:20:05,535 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:20:05,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2020-10-21 23:20:05,535 INFO L429 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]=== [2020-10-21 23:20:05,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:20:05,535 INFO L82 PathProgramCache]: Analyzing trace with hash 456345565, now seen corresponding path program 1 times [2020-10-21 23:20:05,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:20:05,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146182468] [2020-10-21 23:20:05,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:20:05,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:20:05,607 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 23:20:05,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146182468] [2020-10-21 23:20:05,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040178114] [2020-10-21 23:20:05,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-10-21 23:20:05,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:20:05,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:20:05,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:20:05,806 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 23:20:05,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:20:05,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 23:20:05,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630040611] [2020-10-21 23:20:05,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 23:20:05,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:20:05,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 23:20:05,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 23:20:05,807 INFO L87 Difference]: Start difference. First operand 37062 states and 198528 transitions. Second operand 16 states. [2020-10-21 23:20:07,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:20:07,470 INFO L93 Difference]: Finished difference Result 122892 states and 561130 transitions. [2020-10-21 23:20:07,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:20:07,471 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-21 23:20:07,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:20:08,590 INFO L225 Difference]: With dead ends: 122892 [2020-10-21 23:20:08,590 INFO L226 Difference]: Without dead ends: 122862 [2020-10-21 23:20:08,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-21 23:20:09,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122862 states. [2020-10-21 23:20:10,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122862 to 36727. [2020-10-21 23:20:10,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36727 states. [2020-10-21 23:20:11,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36727 states to 36727 states and 196466 transitions. [2020-10-21 23:20:11,119 INFO L78 Accepts]: Start accepts. Automaton has 36727 states and 196466 transitions. Word has length 25 [2020-10-21 23:20:11,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:20:11,119 INFO L481 AbstractCegarLoop]: Abstraction has 36727 states and 196466 transitions. [2020-10-21 23:20:11,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 23:20:11,119 INFO L276 IsEmpty]: Start isEmpty. Operand 36727 states and 196466 transitions. [2020-10-21 23:20:11,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:20:11,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:20:11,122 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:20:11,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2020-10-21 23:20:11,323 INFO L429 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]=== [2020-10-21 23:20:11,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:20:11,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1399543848, now seen corresponding path program 1 times [2020-10-21 23:20:11,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:20:11,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576227198] [2020-10-21 23:20:11,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:20:11,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:20:11,390 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-21 23:20:11,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576227198] [2020-10-21 23:20:11,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367769736] [2020-10-21 23:20:11,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-10-21 23:20:11,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:20:11,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:20:11,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:20:11,621 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-21 23:20:11,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:20:11,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 23:20:11,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111715236] [2020-10-21 23:20:11,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 23:20:11,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:20:11,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 23:20:11,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 23:20:11,623 INFO L87 Difference]: Start difference. First operand 36727 states and 196466 transitions. Second operand 16 states. [2020-10-21 23:20:13,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:20:13,672 INFO L93 Difference]: Finished difference Result 121590 states and 554657 transitions. [2020-10-21 23:20:13,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:20:13,673 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-21 23:20:13,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:20:14,065 INFO L225 Difference]: With dead ends: 121590 [2020-10-21 23:20:14,065 INFO L226 Difference]: Without dead ends: 121560 [2020-10-21 23:20:14,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-21 23:20:15,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121560 states. [2020-10-21 23:20:17,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121560 to 36513. [2020-10-21 23:20:17,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36513 states. [2020-10-21 23:20:17,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36513 states to 36513 states and 195090 transitions. [2020-10-21 23:20:17,462 INFO L78 Accepts]: Start accepts. Automaton has 36513 states and 195090 transitions. Word has length 25 [2020-10-21 23:20:17,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:20:17,462 INFO L481 AbstractCegarLoop]: Abstraction has 36513 states and 195090 transitions. [2020-10-21 23:20:17,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 23:20:17,462 INFO L276 IsEmpty]: Start isEmpty. Operand 36513 states and 195090 transitions. [2020-10-21 23:20:17,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:20:17,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:20:17,466 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:20:17,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:20:17,667 INFO L429 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]=== [2020-10-21 23:20:17,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:20:17,667 INFO L82 PathProgramCache]: Analyzing trace with hash -244682160, now seen corresponding path program 2 times [2020-10-21 23:20:17,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:20:17,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90888528] [2020-10-21 23:20:17,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:20:17,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:20:17,735 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-21 23:20:17,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90888528] [2020-10-21 23:20:17,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866893916] [2020-10-21 23:20:17,736 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 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 [2020-10-21 23:20:17,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 23:20:17,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:20:17,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:20:17,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:20:17,942 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-21 23:20:17,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:20:17,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 23:20:17,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156454493] [2020-10-21 23:20:17,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 23:20:17,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:20:17,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 23:20:17,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 23:20:17,943 INFO L87 Difference]: Start difference. First operand 36513 states and 195090 transitions. Second operand 16 states. [2020-10-21 23:20:19,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:20:19,560 INFO L93 Difference]: Finished difference Result 120395 states and 548664 transitions. [2020-10-21 23:20:19,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:20:19,561 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-21 23:20:19,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:20:19,947 INFO L225 Difference]: With dead ends: 120395 [2020-10-21 23:20:19,947 INFO L226 Difference]: Without dead ends: 120362 [2020-10-21 23:20:19,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-21 23:20:21,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120362 states. [2020-10-21 23:20:25,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120362 to 36444. [2020-10-21 23:20:25,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36444 states. [2020-10-21 23:20:26,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36444 states to 36444 states and 194571 transitions. [2020-10-21 23:20:26,057 INFO L78 Accepts]: Start accepts. Automaton has 36444 states and 194571 transitions. Word has length 25 [2020-10-21 23:20:26,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:20:26,058 INFO L481 AbstractCegarLoop]: Abstraction has 36444 states and 194571 transitions. [2020-10-21 23:20:26,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 23:20:26,058 INFO L276 IsEmpty]: Start isEmpty. Operand 36444 states and 194571 transitions. [2020-10-21 23:20:26,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:20:26,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:20:26,060 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:20:26,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2020-10-21 23:20:26,261 INFO L429 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]=== [2020-10-21 23:20:26,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:20:26,262 INFO L82 PathProgramCache]: Analyzing trace with hash -244694405, now seen corresponding path program 2 times [2020-10-21 23:20:26,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:20:26,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585534055] [2020-10-21 23:20:26,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:20:26,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:20:26,337 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-21 23:20:26,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585534055] [2020-10-21 23:20:26,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879621580] [2020-10-21 23:20:26,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:20:26,490 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 23:20:26,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:20:26,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:20:26,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:20:26,632 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-21 23:20:26,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:20:26,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 23:20:26,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81686514] [2020-10-21 23:20:26,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 23:20:26,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:20:26,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 23:20:26,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 23:20:26,634 INFO L87 Difference]: Start difference. First operand 36444 states and 194571 transitions. Second operand 16 states. [2020-10-21 23:20:28,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:20:28,370 INFO L93 Difference]: Finished difference Result 119346 states and 543724 transitions. [2020-10-21 23:20:28,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:20:28,371 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-21 23:20:28,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:20:29,596 INFO L225 Difference]: With dead ends: 119346 [2020-10-21 23:20:29,596 INFO L226 Difference]: Without dead ends: 119313 [2020-10-21 23:20:29,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-21 23:20:30,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119313 states. [2020-10-21 23:20:31,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119313 to 36040. [2020-10-21 23:20:31,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36040 states. [2020-10-21 23:20:32,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36040 states to 36040 states and 192287 transitions. [2020-10-21 23:20:32,122 INFO L78 Accepts]: Start accepts. Automaton has 36040 states and 192287 transitions. Word has length 25 [2020-10-21 23:20:32,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:20:32,123 INFO L481 AbstractCegarLoop]: Abstraction has 36040 states and 192287 transitions. [2020-10-21 23:20:32,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 23:20:32,123 INFO L276 IsEmpty]: Start isEmpty. Operand 36040 states and 192287 transitions. [2020-10-21 23:20:32,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:20:32,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:20:32,125 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:20:32,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2020-10-21 23:20:32,326 INFO L429 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]=== [2020-10-21 23:20:32,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:20:32,327 INFO L82 PathProgramCache]: Analyzing trace with hash -767942371, now seen corresponding path program 3 times [2020-10-21 23:20:32,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:20:32,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448702229] [2020-10-21 23:20:32,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:20:32,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:20:32,398 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-21 23:20:32,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448702229] [2020-10-21 23:20:32,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296609368] [2020-10-21 23:20:32,399 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 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 [2020-10-21 23:20:32,492 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-21 23:20:32,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:20:32,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:20:32,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:20:32,607 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-21 23:20:32,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:20:32,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 23:20:32,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079776194] [2020-10-21 23:20:32,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 23:20:32,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:20:32,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 23:20:32,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 23:20:32,609 INFO L87 Difference]: Start difference. First operand 36040 states and 192287 transitions. Second operand 16 states. [2020-10-21 23:20:34,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:20:34,910 INFO L93 Difference]: Finished difference Result 119770 states and 545635 transitions. [2020-10-21 23:20:34,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:20:34,911 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-21 23:20:34,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:20:35,278 INFO L225 Difference]: With dead ends: 119770 [2020-10-21 23:20:35,278 INFO L226 Difference]: Without dead ends: 119740 [2020-10-21 23:20:35,278 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-21 23:20:36,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119740 states. [2020-10-21 23:20:40,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119740 to 35471. [2020-10-21 23:20:40,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35471 states. Received shutdown request... [2020-10-21 23:20:40,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2020-10-21 23:20:40,977 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-21 23:20:40,981 WARN L235 ceAbstractionStarter]: Timeout [2020-10-21 23:20:40,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 11:20:40 BasicIcfg [2020-10-21 23:20:40,982 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-21 23:20:40,982 INFO L168 Benchmark]: Toolchain (without parser) took 225485.88 ms. Allocated memory was 147.8 MB in the beginning and 2.8 GB in the end (delta: 2.7 GB). Free memory was 103.2 MB in the beginning and 2.0 GB in the end (delta: -1.9 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2020-10-21 23:20:40,983 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 147.8 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-21 23:20:40,983 INFO L168 Benchmark]: CACSL2BoogieTranslator took 681.33 ms. Allocated memory was 147.8 MB in the beginning and 205.5 MB in the end (delta: 57.7 MB). Free memory was 102.1 MB in the beginning and 161.4 MB in the end (delta: -59.2 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2020-10-21 23:20:40,983 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.15 ms. Allocated memory is still 205.5 MB. Free memory was 161.4 MB in the beginning and 159.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-21 23:20:40,984 INFO L168 Benchmark]: Boogie Preprocessor took 29.59 ms. Allocated memory is still 205.5 MB. Free memory was 159.4 MB in the beginning and 157.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-21 23:20:40,984 INFO L168 Benchmark]: RCFGBuilder took 488.83 ms. Allocated memory is still 205.5 MB. Free memory was 157.4 MB in the beginning and 135.7 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-10-21 23:20:40,984 INFO L168 Benchmark]: TraceAbstraction took 224225.39 ms. Allocated memory was 205.5 MB in the beginning and 2.8 GB in the end (delta: 2.6 GB). Free memory was 135.1 MB in the beginning and 2.0 GB in the end (delta: -1.9 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2020-10-21 23:20:40,986 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 147.8 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 681.33 ms. Allocated memory was 147.8 MB in the beginning and 205.5 MB in the end (delta: 57.7 MB). Free memory was 102.1 MB in the beginning and 161.4 MB in the end (delta: -59.2 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.15 ms. Allocated memory is still 205.5 MB. Free memory was 161.4 MB in the beginning and 159.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.59 ms. Allocated memory is still 205.5 MB. Free memory was 159.4 MB in the beginning and 157.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 488.83 ms. Allocated memory is still 205.5 MB. Free memory was 157.4 MB in the beginning and 135.7 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 224225.39 ms. Allocated memory was 205.5 MB in the beginning and 2.8 GB in the end (delta: 2.6 GB). Free memory was 135.1 MB in the beginning and 2.0 GB in the end (delta: -1.9 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 454 VarBasedMoverChecksPositive, 2 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 3 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.6s, 69 PlacesBefore, 18 PlacesAfterwards, 67 TransitionsBefore, 12 TransitionsAfterwards, 832 CoEnabledTransitionPairs, 7 FixpointIterations, 25 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 5 ConcurrentYvCompositions, 4 ChoiceCompositions, 69 TotalNumberOfCompositions, 793 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 655 VarBasedMoverChecksPositive, 10 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 25 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.4s, 92 PlacesBefore, 31 PlacesAfterwards, 88 TransitionsBefore, 21 TransitionsAfterwards, 1220 CoEnabledTransitionPairs, 6 FixpointIterations, 42 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 6 ConcurrentYvCompositions, 6 ChoiceCompositions, 86 TotalNumberOfCompositions, 1551 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 863 VarBasedMoverChecksPositive, 15 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 41 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.6s, 115 PlacesBefore, 41 PlacesAfterwards, 109 TransitionsBefore, 27 TransitionsAfterwards, 1668 CoEnabledTransitionPairs, 6 FixpointIterations, 55 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 6 ConcurrentYvCompositions, 8 ChoiceCompositions, 107 TotalNumberOfCompositions, 2216 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1161 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 64 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.5s, 138 PlacesBefore, 51 PlacesAfterwards, 130 TransitionsBefore, 33 TransitionsAfterwards, 2176 CoEnabledTransitionPairs, 6 FixpointIterations, 70 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 12 TrivialYvCompositions, 5 ConcurrentYvCompositions, 10 ChoiceCompositions, 134 TotalNumberOfCompositions, 3275 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1421 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 82 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.0s, 161 PlacesBefore, 61 PlacesAfterwards, 151 TransitionsBefore, 39 TransitionsAfterwards, 2744 CoEnabledTransitionPairs, 6 FixpointIterations, 89 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 17 TrivialYvCompositions, 6 ConcurrentYvCompositions, 12 ChoiceCompositions, 162 TotalNumberOfCompositions, 4200 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1751 VarBasedMoverChecksPositive, 28 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 95 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.4s, 184 PlacesBefore, 71 PlacesAfterwards, 172 TransitionsBefore, 45 TransitionsAfterwards, 3372 CoEnabledTransitionPairs, 6 FixpointIterations, 109 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 19 TrivialYvCompositions, 6 ConcurrentYvCompositions, 14 ChoiceCompositions, 191 TotalNumberOfCompositions, 5911 MoverChecksTotal - TimeoutResultAtElement [Line: 683]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 683). Cancelled while ReachableStatesComputation was computing reachable states (16813 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 63 locations, 1 error locations. Started 6 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 223.8s, OverallIterations: 103, TraceHistogramMax: 6, AutomataDifference: 87.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 18.9s, HoareTripleCheckerStatistics: 4543 SDtfs, 22205 SDslu, 15490 SDs, 0 SdLazy, 29652 SolverSat, 1959 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 24.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2440 GetRequests, 489 SyntacticMatches, 0 SemanticMatches, 1951 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12671 ImplicationChecksByTransitivity, 23.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37062occurred in iteration=23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 97.0s AutomataMinimizationTime, 98 MinimizatonAttempts, 2027791 StatesRemovedByMinimization, 90 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 8.6s InterpolantComputationTime, 2685 NumberOfCodeBlocks, 2669 NumberOfCodeBlocksAsserted, 150 NumberOfCheckSat, 2466 ConstructedInterpolants, 0 QuantifiedInterpolants, 332116 SizeOfPredicates, 174 NumberOfNonLiveVariables, 4183 ConjunctsInSsa, 273 ConjunctsInUnsatCore, 131 InterpolantComputations, 65 PerfectInterpolantSequences, 914/1440 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown