/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-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-21 23:16:55,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-21 23:16:55,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-21 23:16:55,152 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-21 23:16:55,152 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-21 23:16:55,153 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-21 23:16:55,155 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-21 23:16:55,157 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-21 23:16:55,159 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-21 23:16:55,159 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-21 23:16:55,160 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-21 23:16:55,161 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-21 23:16:55,162 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-21 23:16:55,163 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-21 23:16:55,164 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-21 23:16:55,165 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-21 23:16:55,166 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-21 23:16:55,167 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-21 23:16:55,169 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-21 23:16:55,171 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-21 23:16:55,172 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-21 23:16:55,174 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-21 23:16:55,175 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-21 23:16:55,176 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-21 23:16:55,178 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-21 23:16:55,181 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-21 23:16:55,182 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-21 23:16:55,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-21 23:16:55,183 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-21 23:16:55,185 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-21 23:16:55,185 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-21 23:16:55,185 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-21 23:16:55,186 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-21 23:16:55,186 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-21 23:16:55,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-21 23:16:55,187 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-21 23:16:55,188 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 23:16:55,220 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-21 23:16:55,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-21 23:16:55,222 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-21 23:16:55,222 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-21 23:16:55,222 INFO L138 SettingsManager]: * Use SBE=true [2020-10-21 23:16:55,222 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-21 23:16:55,222 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-21 23:16:55,223 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-21 23:16:55,223 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-21 23:16:55,223 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-21 23:16:55,223 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-21 23:16:55,223 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-21 23:16:55,224 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-21 23:16:55,224 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-21 23:16:55,227 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-21 23:16:55,227 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-21 23:16:55,227 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-21 23:16:55,228 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-21 23:16:55,231 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-21 23:16:55,231 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-21 23:16:55,231 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-21 23:16:55,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-21 23:16:55,232 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-21 23:16:55,232 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-21 23:16:55,232 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-21 23:16:55,232 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-21 23:16:55,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-21 23:16:55,233 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-21 23:16:55,233 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-21 23:16:55,552 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-21 23:16:55,564 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-21 23:16:55,567 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-21 23:16:55,569 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-21 23:16:55,569 INFO L275 PluginConnector]: CDTParser initialized [2020-10-21 23:16:55,570 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-2.i [2020-10-21 23:16:55,631 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e84a551c8/1470178f850946bc9cb77083e8c7ff40/FLAGf90b251b4 [2020-10-21 23:16:56,218 INFO L306 CDTParser]: Found 1 translation units. [2020-10-21 23:16:56,219 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-2.i [2020-10-21 23:16:56,237 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e84a551c8/1470178f850946bc9cb77083e8c7ff40/FLAGf90b251b4 [2020-10-21 23:16:56,473 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e84a551c8/1470178f850946bc9cb77083e8c7ff40 [2020-10-21 23:16:56,482 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-21 23:16:56,491 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-21 23:16:56,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-21 23:16:56,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-21 23:16:56,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-21 23:16:56,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 11:16:56" (1/1) ... [2020-10-21 23:16:56,503 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d587f5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:16:56, skipping insertion in model container [2020-10-21 23:16:56,503 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 11:16:56" (1/1) ... [2020-10-21 23:16:56,512 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-21 23:16:56,582 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-21 23:16:57,113 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 23:16:57,131 INFO L203 MainTranslator]: Completed pre-run [2020-10-21 23:16:57,185 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 23:16:57,264 INFO L208 MainTranslator]: Completed translation [2020-10-21 23:16:57,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:16:57 WrapperNode [2020-10-21 23:16:57,265 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-21 23:16:57,265 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-21 23:16:57,266 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-21 23:16:57,266 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-21 23:16:57,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:16:57" (1/1) ... [2020-10-21 23:16:57,292 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:16:57" (1/1) ... [2020-10-21 23:16:57,316 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-21 23:16:57,316 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-21 23:16:57,317 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-21 23:16:57,317 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-21 23:16:57,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:16:57" (1/1) ... [2020-10-21 23:16:57,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:16:57" (1/1) ... [2020-10-21 23:16:57,329 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:16:57" (1/1) ... [2020-10-21 23:16:57,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:16:57" (1/1) ... [2020-10-21 23:16:57,341 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:16:57" (1/1) ... [2020-10-21 23:16:57,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:16:57" (1/1) ... [2020-10-21 23:16:57,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:16:57" (1/1) ... [2020-10-21 23:16:57,357 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-21 23:16:57,358 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-21 23:16:57,358 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-21 23:16:57,358 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-21 23:16:57,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:16:57" (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 23:16:57,429 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-21 23:16:57,430 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-21 23:16:57,430 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-21 23:16:57,430 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-21 23:16:57,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-21 23:16:57,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-21 23:16:57,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-21 23:16:57,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-21 23:16:57,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-21 23:16:57,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-21 23:16:57,433 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 23:16:57,798 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-21 23:16:57,798 INFO L298 CfgBuilder]: Removed 11 assume(true) statements. [2020-10-21 23:16:57,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 11:16:57 BoogieIcfgContainer [2020-10-21 23:16:57,800 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-21 23:16:57,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-21 23:16:57,802 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-21 23:16:57,805 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-21 23:16:57,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 11:16:56" (1/3) ... [2020-10-21 23:16:57,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fb0c16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 11:16:57, skipping insertion in model container [2020-10-21 23:16:57,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:16:57" (2/3) ... [2020-10-21 23:16:57,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fb0c16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 11:16:57, skipping insertion in model container [2020-10-21 23:16:57,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 11:16:57" (3/3) ... [2020-10-21 23:16:57,808 INFO L111 eAbstractionObserver]: Analyzing ICFG nondet-loop-bound-2.i [2020-10-21 23:16:57,819 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-21 23:16:57,819 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-21 23:16:57,825 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-21 23:16:57,826 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-21 23:16:57,854 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:57,855 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:57,855 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:57,855 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:57,856 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:57,856 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:57,857 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:57,857 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:57,858 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:57,858 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:57,858 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:57,858 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:57,859 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:57,859 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:57,859 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:57,860 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:57,860 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:57,860 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:57,861 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:57,861 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:57,861 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:57,866 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:57,866 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:57,867 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:57,867 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:57,867 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:57,878 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:57,879 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:57,879 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:57,879 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:57,880 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:57,880 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:57,880 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:57,880 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:16:57,883 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-21 23:16:57,898 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-21 23:16:57,920 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 23:16:57,920 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 23:16:57,920 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-21 23:16:57,920 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 23:16:57,920 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 23:16:57,921 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 23:16:57,921 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 23:16:57,921 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 23:16:57,933 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-21 23:16:57,934 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 67 transitions, 144 flow [2020-10-21 23:16:57,936 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 67 transitions, 144 flow [2020-10-21 23:16:57,938 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 69 places, 67 transitions, 144 flow [2020-10-21 23:16:57,989 INFO L129 PetriNetUnfolder]: 5/77 cut-off events. [2020-10-21 23:16:57,989 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-21 23:16:57,996 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 23:16:57,999 INFO L116 LiptonReduction]: Number of co-enabled transitions 832 [2020-10-21 23:16:59,274 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-10-21 23:16:59,467 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2020-10-21 23:16:59,967 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 97 [2020-10-21 23:17:00,203 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 85 [2020-10-21 23:17:00,348 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-21 23:17:00,490 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-21 23:17:00,494 INFO L131 LiptonReduction]: Checked pairs total: 793 [2020-10-21 23:17:00,495 INFO L133 LiptonReduction]: Total number of compositions: 69 [2020-10-21 23:17:00,502 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 12 transitions, 34 flow [2020-10-21 23:17:00,512 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-10-21 23:17:00,514 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-21 23:17:00,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-21 23:17:00,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:00,521 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-21 23:17:00,521 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 23:17:00,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:00,526 INFO L82 PathProgramCache]: Analyzing trace with hash 270931, now seen corresponding path program 1 times [2020-10-21 23:17:00,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:00,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776584471] [2020-10-21 23:17:00,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:00,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:00,745 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 23:17:00,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776584471] [2020-10-21 23:17:00,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:00,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-21 23:17:00,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932885191] [2020-10-21 23:17:00,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 23:17:00,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:00,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 23:17:00,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:17:00,777 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-10-21 23:17:00,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:00,820 INFO L93 Difference]: Finished difference Result 35 states and 59 transitions. [2020-10-21 23:17:00,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 23:17:00,822 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-21 23:17:00,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:00,831 INFO L225 Difference]: With dead ends: 35 [2020-10-21 23:17:00,832 INFO L226 Difference]: Without dead ends: 31 [2020-10-21 23:17:00,833 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 23:17:00,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-21 23:17:00,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-21 23:17:00,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-21 23:17:00,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 51 transitions. [2020-10-21 23:17:00,869 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 51 transitions. Word has length 3 [2020-10-21 23:17:00,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:00,869 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 51 transitions. [2020-10-21 23:17:00,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 23:17:00,869 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 51 transitions. [2020-10-21 23:17:00,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-21 23:17:00,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:00,870 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:00,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-21 23:17:00,871 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 23:17:00,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:00,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1075906219, now seen corresponding path program 1 times [2020-10-21 23:17:00,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:00,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985061839] [2020-10-21 23:17:00,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:00,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:00,985 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 23:17:00,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985061839] [2020-10-21 23:17:00,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:00,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 23:17:00,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939393513] [2020-10-21 23:17:00,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 23:17:00,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:00,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 23:17:00,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-21 23:17:00,989 INFO L87 Difference]: Start difference. First operand 31 states and 51 transitions. Second operand 4 states. [2020-10-21 23:17:01,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:01,010 INFO L93 Difference]: Finished difference Result 26 states and 42 transitions. [2020-10-21 23:17:01,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-21 23:17:01,010 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-21 23:17:01,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:01,011 INFO L225 Difference]: With dead ends: 26 [2020-10-21 23:17:01,012 INFO L226 Difference]: Without dead ends: 24 [2020-10-21 23:17:01,013 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 23:17:01,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-21 23:17:01,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-21 23:17:01,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-21 23:17:01,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 39 transitions. [2020-10-21 23:17:01,018 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 39 transitions. Word has length 7 [2020-10-21 23:17:01,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:01,018 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 39 transitions. [2020-10-21 23:17:01,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 23:17:01,018 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 39 transitions. [2020-10-21 23:17:01,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-21 23:17:01,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:01,019 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:01,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-21 23:17:01,020 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 23:17:01,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:01,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1006649777, now seen corresponding path program 1 times [2020-10-21 23:17:01,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:01,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079731814] [2020-10-21 23:17:01,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:01,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 23:17:01,049 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 23:17:01,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 23:17:01,077 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 23:17:01,109 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-21 23:17:01,110 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-21 23:17:01,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-21 23:17:01,110 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-21 23:17:01,112 WARN L371 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-21 23:17:01,112 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-21 23:17:01,122 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,122 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,123 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,123 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,123 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,123 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,123 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,124 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,124 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,124 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,124 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,124 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,125 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,125 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,125 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,126 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,126 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,126 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,126 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,126 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,126 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,127 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,127 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,127 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,127 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,127 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,128 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,128 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,128 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,129 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,129 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,129 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,129 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,129 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,129 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,130 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,130 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,130 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,130 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,130 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,131 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,131 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,131 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,132 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,132 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,132 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,132 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,135 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,136 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,136 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,136 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,136 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,138 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,138 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,138 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,138 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,139 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,139 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,139 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,139 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,140 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,141 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,141 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,141 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,141 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,141 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,141 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,142 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:01,143 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-21 23:17:01,143 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-21 23:17:01,143 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 23:17:01,143 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 23:17:01,144 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-21 23:17:01,144 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 23:17:01,144 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 23:17:01,144 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 23:17:01,144 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 23:17:01,144 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 23:17:01,147 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-21 23:17:01,147 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 88 transitions, 200 flow [2020-10-21 23:17:01,147 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 88 transitions, 200 flow [2020-10-21 23:17:01,148 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 92 places, 88 transitions, 200 flow [2020-10-21 23:17:01,172 INFO L129 PetriNetUnfolder]: 6/98 cut-off events. [2020-10-21 23:17:01,172 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-21 23:17:01,174 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 23:17:01,177 INFO L116 LiptonReduction]: Number of co-enabled transitions 1220 [2020-10-21 23:17:02,680 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-10-21 23:17:02,788 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-21 23:17:03,301 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-21 23:17:03,568 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 90 [2020-10-21 23:17:03,574 INFO L131 LiptonReduction]: Checked pairs total: 1551 [2020-10-21 23:17:03,575 INFO L133 LiptonReduction]: Total number of compositions: 86 [2020-10-21 23:17:03,575 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 66 flow [2020-10-21 23:17:03,593 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 224 states. [2020-10-21 23:17:03,595 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states. [2020-10-21 23:17:03,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-21 23:17:03,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:03,596 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-21 23:17:03,596 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:17:03,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:03,597 INFO L82 PathProgramCache]: Analyzing trace with hash 464008, now seen corresponding path program 1 times [2020-10-21 23:17:03,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:03,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921326253] [2020-10-21 23:17:03,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:03,670 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 23:17:03,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921326253] [2020-10-21 23:17:03,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:03,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-21 23:17:03,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125372995] [2020-10-21 23:17:03,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 23:17:03,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:03,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 23:17:03,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:17:03,672 INFO L87 Difference]: Start difference. First operand 224 states. Second operand 3 states. [2020-10-21 23:17:03,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:03,720 INFO L93 Difference]: Finished difference Result 185 states and 459 transitions. [2020-10-21 23:17:03,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 23:17:03,721 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-21 23:17:03,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:03,727 INFO L225 Difference]: With dead ends: 185 [2020-10-21 23:17:03,727 INFO L226 Difference]: Without dead ends: 171 [2020-10-21 23:17:03,727 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 23:17:03,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-21 23:17:03,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-10-21 23:17:03,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-21 23:17:03,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 418 transitions. [2020-10-21 23:17:03,759 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 418 transitions. Word has length 3 [2020-10-21 23:17:03,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:03,760 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 418 transitions. [2020-10-21 23:17:03,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 23:17:03,760 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 418 transitions. [2020-10-21 23:17:03,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 23:17:03,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:03,761 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:03,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-21 23:17:03,762 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:17:03,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:03,762 INFO L82 PathProgramCache]: Analyzing trace with hash 2038027130, now seen corresponding path program 1 times [2020-10-21 23:17:03,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:03,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40569449] [2020-10-21 23:17:03,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:03,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:03,823 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 23:17:03,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40569449] [2020-10-21 23:17:03,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:03,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:17:03,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862430323] [2020-10-21 23:17:03,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:17:03,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:03,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:17:03,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:17:03,826 INFO L87 Difference]: Start difference. First operand 171 states and 418 transitions. Second operand 5 states. [2020-10-21 23:17:03,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:03,930 INFO L93 Difference]: Finished difference Result 205 states and 460 transitions. [2020-10-21 23:17:03,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:17:03,932 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-21 23:17:03,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:03,935 INFO L225 Difference]: With dead ends: 205 [2020-10-21 23:17:03,935 INFO L226 Difference]: Without dead ends: 201 [2020-10-21 23:17:03,936 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 23:17:03,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-21 23:17:03,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 162. [2020-10-21 23:17:03,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-21 23:17:03,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 399 transitions. [2020-10-21 23:17:03,957 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 399 transitions. Word has length 9 [2020-10-21 23:17:03,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:03,957 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 399 transitions. [2020-10-21 23:17:03,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:17:03,958 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 399 transitions. [2020-10-21 23:17:03,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 23:17:03,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:03,959 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:03,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-21 23:17:03,959 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:17:03,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:03,960 INFO L82 PathProgramCache]: Analyzing trace with hash -460391635, now seen corresponding path program 1 times [2020-10-21 23:17:03,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:03,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527877196] [2020-10-21 23:17:03,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:03,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:04,010 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 23:17:04,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527877196] [2020-10-21 23:17:04,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:04,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:17:04,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693529239] [2020-10-21 23:17:04,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:17:04,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:04,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:17:04,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:17:04,013 INFO L87 Difference]: Start difference. First operand 162 states and 399 transitions. Second operand 5 states. [2020-10-21 23:17:04,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:04,114 INFO L93 Difference]: Finished difference Result 189 states and 423 transitions. [2020-10-21 23:17:04,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:17:04,115 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-21 23:17:04,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:04,117 INFO L225 Difference]: With dead ends: 189 [2020-10-21 23:17:04,117 INFO L226 Difference]: Without dead ends: 185 [2020-10-21 23:17:04,117 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 23:17:04,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-21 23:17:04,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 153. [2020-10-21 23:17:04,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-21 23:17:04,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 367 transitions. [2020-10-21 23:17:04,131 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 367 transitions. Word has length 13 [2020-10-21 23:17:04,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:04,133 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 367 transitions. [2020-10-21 23:17:04,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:17:04,133 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 367 transitions. [2020-10-21 23:17:04,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-21 23:17:04,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:04,134 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:04,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-21 23:17:04,135 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:17:04,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:04,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1390371680, now seen corresponding path program 1 times [2020-10-21 23:17:04,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:04,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267136415] [2020-10-21 23:17:04,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:04,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 23:17:04,167 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 23:17:04,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 23:17:04,197 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 23:17:04,211 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-21 23:17:04,212 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-21 23:17:04,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-21 23:17:04,213 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-21 23:17:04,214 WARN L371 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-21 23:17:04,216 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-21 23:17:04,235 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,236 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,236 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,236 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,236 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,237 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,237 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,237 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,238 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,238 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,238 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,238 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,238 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,238 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,239 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,239 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,239 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,240 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,240 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,240 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,240 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,242 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,242 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,242 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,242 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,242 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,243 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,243 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,243 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,243 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,243 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,243 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,244 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,244 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,244 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,244 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,244 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,245 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,245 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,245 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,245 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,245 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,245 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,245 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,246 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,246 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,246 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,246 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,246 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,247 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,247 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,248 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,248 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,248 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,248 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,248 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,248 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,249 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,249 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,249 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,249 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,250 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,250 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,251 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,251 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,252 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,252 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,252 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,253 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,254 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,254 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,254 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,254 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,255 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,255 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,256 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,256 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,256 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,257 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,257 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,257 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,258 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,258 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,258 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,258 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,258 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,259 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,260 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,260 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,260 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,260 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,260 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,261 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,261 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,262 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,262 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,262 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,262 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,263 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,263 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,263 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,263 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:04,264 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-21 23:17:04,265 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-21 23:17:04,265 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 23:17:04,265 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 23:17:04,265 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-21 23:17:04,265 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 23:17:04,265 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 23:17:04,266 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 23:17:04,266 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 23:17:04,266 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 23:17:04,273 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-21 23:17:04,273 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 109 transitions, 260 flow [2020-10-21 23:17:04,273 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 109 transitions, 260 flow [2020-10-21 23:17:04,274 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 115 places, 109 transitions, 260 flow [2020-10-21 23:17:04,319 INFO L129 PetriNetUnfolder]: 7/119 cut-off events. [2020-10-21 23:17:04,319 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-21 23:17:04,322 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 23:17:04,329 INFO L116 LiptonReduction]: Number of co-enabled transitions 1668 [2020-10-21 23:17:06,402 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 96 [2020-10-21 23:17:06,554 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-21 23:17:06,824 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 90 [2020-10-21 23:17:06,963 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-21 23:17:06,968 INFO L131 LiptonReduction]: Checked pairs total: 2216 [2020-10-21 23:17:06,968 INFO L133 LiptonReduction]: Total number of compositions: 107 [2020-10-21 23:17:06,969 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 27 transitions, 96 flow [2020-10-21 23:17:06,995 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 683 states. [2020-10-21 23:17:06,996 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states. [2020-10-21 23:17:06,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-21 23:17:06,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:06,996 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-21 23:17:06,997 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 23:17:06,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:06,997 INFO L82 PathProgramCache]: Analyzing trace with hash 698655, now seen corresponding path program 1 times [2020-10-21 23:17:06,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:06,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265152054] [2020-10-21 23:17:06,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:07,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:07,033 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 23:17:07,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265152054] [2020-10-21 23:17:07,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:07,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-21 23:17:07,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338970546] [2020-10-21 23:17:07,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 23:17:07,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:07,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 23:17:07,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:17:07,036 INFO L87 Difference]: Start difference. First operand 683 states. Second operand 3 states. [2020-10-21 23:17:07,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:07,080 INFO L93 Difference]: Finished difference Result 600 states and 1886 transitions. [2020-10-21 23:17:07,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 23:17:07,081 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-21 23:17:07,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:07,088 INFO L225 Difference]: With dead ends: 600 [2020-10-21 23:17:07,088 INFO L226 Difference]: Without dead ends: 559 [2020-10-21 23:17:07,089 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 23:17:07,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-10-21 23:17:07,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2020-10-21 23:17:07,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-10-21 23:17:07,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 1737 transitions. [2020-10-21 23:17:07,156 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 1737 transitions. Word has length 3 [2020-10-21 23:17:07,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:07,156 INFO L481 AbstractCegarLoop]: Abstraction has 559 states and 1737 transitions. [2020-10-21 23:17:07,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 23:17:07,157 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 1737 transitions. [2020-10-21 23:17:07,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 23:17:07,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:07,158 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:07,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-21 23:17:07,159 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 23:17:07,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:07,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1614105147, now seen corresponding path program 1 times [2020-10-21 23:17:07,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:07,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610895266] [2020-10-21 23:17:07,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:07,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:07,235 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 23:17:07,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610895266] [2020-10-21 23:17:07,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:07,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:17:07,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200411572] [2020-10-21 23:17:07,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:17:07,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:07,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:17:07,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:17:07,238 INFO L87 Difference]: Start difference. First operand 559 states and 1737 transitions. Second operand 5 states. [2020-10-21 23:17:07,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:07,335 INFO L93 Difference]: Finished difference Result 817 states and 2317 transitions. [2020-10-21 23:17:07,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:17:07,335 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-21 23:17:07,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:07,342 INFO L225 Difference]: With dead ends: 817 [2020-10-21 23:17:07,342 INFO L226 Difference]: Without dead ends: 812 [2020-10-21 23:17:07,343 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 23:17:07,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-10-21 23:17:07,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 585. [2020-10-21 23:17:07,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-10-21 23:17:07,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1832 transitions. [2020-10-21 23:17:07,374 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1832 transitions. Word has length 9 [2020-10-21 23:17:07,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:07,375 INFO L481 AbstractCegarLoop]: Abstraction has 585 states and 1832 transitions. [2020-10-21 23:17:07,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:17:07,375 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1832 transitions. [2020-10-21 23:17:07,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 23:17:07,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:07,376 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:07,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-21 23:17:07,377 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 23:17:07,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:07,377 INFO L82 PathProgramCache]: Analyzing trace with hash 222037333, now seen corresponding path program 1 times [2020-10-21 23:17:07,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:07,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21015072] [2020-10-21 23:17:07,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:07,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:07,429 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 23:17:07,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21015072] [2020-10-21 23:17:07,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:07,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:17:07,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307366358] [2020-10-21 23:17:07,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:17:07,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:07,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:17:07,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:17:07,432 INFO L87 Difference]: Start difference. First operand 585 states and 1832 transitions. Second operand 5 states. [2020-10-21 23:17:07,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:07,535 INFO L93 Difference]: Finished difference Result 843 states and 2406 transitions. [2020-10-21 23:17:07,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:17:07,536 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-21 23:17:07,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:07,544 INFO L225 Difference]: With dead ends: 843 [2020-10-21 23:17:07,545 INFO L226 Difference]: Without dead ends: 836 [2020-10-21 23:17:07,545 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 23:17:07,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2020-10-21 23:17:07,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 611. [2020-10-21 23:17:07,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-10-21 23:17:07,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1906 transitions. [2020-10-21 23:17:07,578 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1906 transitions. Word has length 13 [2020-10-21 23:17:07,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:07,578 INFO L481 AbstractCegarLoop]: Abstraction has 611 states and 1906 transitions. [2020-10-21 23:17:07,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:17:07,579 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1906 transitions. [2020-10-21 23:17:07,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-21 23:17:07,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:07,580 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:07,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-21 23:17:07,580 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 23:17:07,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:07,581 INFO L82 PathProgramCache]: Analyzing trace with hash -24425909, now seen corresponding path program 1 times [2020-10-21 23:17:07,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:07,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493778779] [2020-10-21 23:17:07,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:07,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:07,644 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 23:17:07,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493778779] [2020-10-21 23:17:07,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876411119] [2020-10-21 23:17:07,645 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 23:17:07,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:07,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-21 23:17:07,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:17:07,800 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 23:17:07,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:17:07,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-21 23:17:07,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102056581] [2020-10-21 23:17:07,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-21 23:17:07,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:07,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-21 23:17:07,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-21 23:17:07,802 INFO L87 Difference]: Start difference. First operand 611 states and 1906 transitions. Second operand 12 states. [2020-10-21 23:17:08,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:08,080 INFO L93 Difference]: Finished difference Result 1059 states and 2818 transitions. [2020-10-21 23:17:08,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:17:08,081 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-21 23:17:08,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:08,090 INFO L225 Difference]: With dead ends: 1059 [2020-10-21 23:17:08,090 INFO L226 Difference]: Without dead ends: 1052 [2020-10-21 23:17:08,091 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 23:17:08,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2020-10-21 23:17:08,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 591. [2020-10-21 23:17:08,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-10-21 23:17:08,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1840 transitions. [2020-10-21 23:17:08,121 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1840 transitions. Word has length 15 [2020-10-21 23:17:08,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:08,121 INFO L481 AbstractCegarLoop]: Abstraction has 591 states and 1840 transitions. [2020-10-21 23:17:08,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-21 23:17:08,122 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1840 transitions. [2020-10-21 23:17:08,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-21 23:17:08,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:08,123 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:08,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-21 23:17:08,338 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 23:17:08,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:08,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1370486663, now seen corresponding path program 2 times [2020-10-21 23:17:08,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:08,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156825508] [2020-10-21 23:17:08,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:08,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:08,406 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 23:17:08,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156825508] [2020-10-21 23:17:08,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:08,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:17:08,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112520582] [2020-10-21 23:17:08,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:17:08,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:08,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:17:08,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:17:08,409 INFO L87 Difference]: Start difference. First operand 591 states and 1840 transitions. Second operand 7 states. [2020-10-21 23:17:08,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:08,688 INFO L93 Difference]: Finished difference Result 1053 states and 2807 transitions. [2020-10-21 23:17:08,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:17:08,688 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-21 23:17:08,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:08,696 INFO L225 Difference]: With dead ends: 1053 [2020-10-21 23:17:08,696 INFO L226 Difference]: Without dead ends: 1045 [2020-10-21 23:17:08,697 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 23:17:08,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2020-10-21 23:17:08,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 536. [2020-10-21 23:17:08,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-10-21 23:17:08,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1688 transitions. [2020-10-21 23:17:08,724 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1688 transitions. Word has length 15 [2020-10-21 23:17:08,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:08,724 INFO L481 AbstractCegarLoop]: Abstraction has 536 states and 1688 transitions. [2020-10-21 23:17:08,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:17:08,724 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1688 transitions. [2020-10-21 23:17:08,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-21 23:17:08,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:08,725 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:08,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-21 23:17:08,726 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 23:17:08,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:08,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1795391144, now seen corresponding path program 1 times [2020-10-21 23:17:08,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:08,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390549945] [2020-10-21 23:17:08,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:08,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:08,776 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 23:17:08,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390549945] [2020-10-21 23:17:08,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:08,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:17:08,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775678469] [2020-10-21 23:17:08,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:17:08,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:08,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:17:08,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:17:08,779 INFO L87 Difference]: Start difference. First operand 536 states and 1688 transitions. Second operand 5 states. [2020-10-21 23:17:08,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:08,865 INFO L93 Difference]: Finished difference Result 736 states and 2123 transitions. [2020-10-21 23:17:08,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:17:08,865 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-21 23:17:08,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:08,871 INFO L225 Difference]: With dead ends: 736 [2020-10-21 23:17:08,871 INFO L226 Difference]: Without dead ends: 728 [2020-10-21 23:17:08,871 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 23:17:08,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-10-21 23:17:08,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 549. [2020-10-21 23:17:08,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2020-10-21 23:17:08,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 1684 transitions. [2020-10-21 23:17:08,893 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 1684 transitions. Word has length 17 [2020-10-21 23:17:08,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:08,894 INFO L481 AbstractCegarLoop]: Abstraction has 549 states and 1684 transitions. [2020-10-21 23:17:08,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:17:08,894 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 1684 transitions. [2020-10-21 23:17:08,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-21 23:17:08,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:08,895 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:08,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-21 23:17:08,896 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 23:17:08,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:08,896 INFO L82 PathProgramCache]: Analyzing trace with hash -181443140, now seen corresponding path program 1 times [2020-10-21 23:17:08,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:08,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240198960] [2020-10-21 23:17:08,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:08,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 23:17:08,910 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 23:17:08,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 23:17:08,921 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 23:17:08,929 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-21 23:17:08,930 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-21 23:17:08,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-21 23:17:08,930 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-21 23:17:08,931 WARN L371 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-21 23:17:08,931 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-21 23:17:08,944 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,944 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,944 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,944 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,945 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,945 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,945 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,945 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,945 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,945 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,946 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,946 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,946 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,946 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,946 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,946 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,946 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,947 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,947 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,947 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,947 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,947 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,947 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,947 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,948 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,948 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,948 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,948 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,948 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,948 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,949 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,949 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,949 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,949 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,949 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,949 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,949 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,950 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,950 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,950 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,950 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,950 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,951 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,951 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,951 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,951 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,951 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,951 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,951 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,952 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,952 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,952 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,952 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,952 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,952 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,952 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,953 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,953 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,953 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,953 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,953 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,953 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,953 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,954 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,954 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,954 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,954 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,954 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,954 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,954 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,955 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,955 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,955 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,955 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,955 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,955 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,955 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,956 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,956 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,956 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,956 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,956 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,956 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,956 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,957 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,957 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,957 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,957 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,958 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,959 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,959 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,959 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,960 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,960 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,961 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,961 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,961 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,961 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,962 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,963 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,963 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,963 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,963 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,963 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,964 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,965 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,965 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,965 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,965 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,965 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,965 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,966 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,967 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,967 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,967 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,968 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,968 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,968 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,968 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,968 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,970 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,970 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,970 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,970 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,971 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,971 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,971 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,971 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,972 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,973 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,973 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,973 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,973 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,973 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,973 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,974 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:08,975 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-21 23:17:08,975 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-21 23:17:08,975 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 23:17:08,975 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 23:17:08,975 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-21 23:17:08,976 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 23:17:08,976 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 23:17:08,976 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 23:17:08,976 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 23:17:08,976 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 23:17:08,978 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-21 23:17:08,978 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 138 places, 130 transitions, 324 flow [2020-10-21 23:17:08,978 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 138 places, 130 transitions, 324 flow [2020-10-21 23:17:08,978 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 138 places, 130 transitions, 324 flow [2020-10-21 23:17:09,000 INFO L129 PetriNetUnfolder]: 8/140 cut-off events. [2020-10-21 23:17:09,000 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-21 23:17:09,002 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 23:17:09,006 INFO L116 LiptonReduction]: Number of co-enabled transitions 2176 [2020-10-21 23:17:11,103 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-10-21 23:17:11,410 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 94 [2020-10-21 23:17:11,555 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-21 23:17:11,564 INFO L131 LiptonReduction]: Checked pairs total: 3275 [2020-10-21 23:17:11,564 INFO L133 LiptonReduction]: Total number of compositions: 134 [2020-10-21 23:17:11,564 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 33 transitions, 130 flow [2020-10-21 23:17:11,677 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 2060 states. [2020-10-21 23:17:11,677 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states. [2020-10-21 23:17:11,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-21 23:17:11,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:11,678 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-21 23:17:11,678 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 23:17:11,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:11,678 INFO L82 PathProgramCache]: Analyzing trace with hash 980800, now seen corresponding path program 1 times [2020-10-21 23:17:11,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:11,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58749630] [2020-10-21 23:17:11,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:11,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:11,700 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 23:17:11,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58749630] [2020-10-21 23:17:11,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:11,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-21 23:17:11,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302023978] [2020-10-21 23:17:11,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 23:17:11,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:11,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 23:17:11,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:17:11,702 INFO L87 Difference]: Start difference. First operand 2060 states. Second operand 3 states. [2020-10-21 23:17:11,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:11,748 INFO L93 Difference]: Finished difference Result 1889 states and 7217 transitions. [2020-10-21 23:17:11,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 23:17:11,749 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-21 23:17:11,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:11,764 INFO L225 Difference]: With dead ends: 1889 [2020-10-21 23:17:11,765 INFO L226 Difference]: Without dead ends: 1767 [2020-10-21 23:17:11,765 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 23:17:11,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2020-10-21 23:17:11,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1767. [2020-10-21 23:17:11,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1767 states. [2020-10-21 23:17:11,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 6690 transitions. [2020-10-21 23:17:11,850 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 6690 transitions. Word has length 3 [2020-10-21 23:17:11,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:11,851 INFO L481 AbstractCegarLoop]: Abstraction has 1767 states and 6690 transitions. [2020-10-21 23:17:11,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 23:17:11,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 6690 transitions. [2020-10-21 23:17:11,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 23:17:11,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:11,852 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:11,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-21 23:17:11,852 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 23:17:11,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:11,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1761952613, now seen corresponding path program 1 times [2020-10-21 23:17:11,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:11,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510632377] [2020-10-21 23:17:11,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:11,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:11,898 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 23:17:11,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510632377] [2020-10-21 23:17:11,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:11,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:17:11,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107598879] [2020-10-21 23:17:11,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:17:11,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:11,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:17:11,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:17:11,900 INFO L87 Difference]: Start difference. First operand 1767 states and 6690 transitions. Second operand 5 states. [2020-10-21 23:17:12,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:12,006 INFO L93 Difference]: Finished difference Result 2905 states and 10138 transitions. [2020-10-21 23:17:12,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:17:12,006 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-21 23:17:12,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:12,031 INFO L225 Difference]: With dead ends: 2905 [2020-10-21 23:17:12,031 INFO L226 Difference]: Without dead ends: 2899 [2020-10-21 23:17:12,033 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 23:17:12,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-10-21 23:17:12,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1966. [2020-10-21 23:17:12,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1966 states. [2020-10-21 23:17:12,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 7503 transitions. [2020-10-21 23:17:12,136 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 7503 transitions. Word has length 9 [2020-10-21 23:17:12,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:12,136 INFO L481 AbstractCegarLoop]: Abstraction has 1966 states and 7503 transitions. [2020-10-21 23:17:12,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:17:12,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 7503 transitions. [2020-10-21 23:17:12,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 23:17:12,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:12,137 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:12,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-21 23:17:12,137 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 23:17:12,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:12,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1954545134, now seen corresponding path program 1 times [2020-10-21 23:17:12,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:12,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484784782] [2020-10-21 23:17:12,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:12,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:12,183 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 23:17:12,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484784782] [2020-10-21 23:17:12,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:12,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:17:12,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15804002] [2020-10-21 23:17:12,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:17:12,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:12,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:17:12,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:17:12,185 INFO L87 Difference]: Start difference. First operand 1966 states and 7503 transitions. Second operand 5 states. [2020-10-21 23:17:12,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:12,294 INFO L93 Difference]: Finished difference Result 3204 states and 11312 transitions. [2020-10-21 23:17:12,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:17:12,295 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-21 23:17:12,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:12,332 INFO L225 Difference]: With dead ends: 3204 [2020-10-21 23:17:12,332 INFO L226 Difference]: Without dead ends: 3194 [2020-10-21 23:17:12,333 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 23:17:12,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2020-10-21 23:17:12,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 2200. [2020-10-21 23:17:12,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2020-10-21 23:17:12,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 8453 transitions. [2020-10-21 23:17:12,432 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 8453 transitions. Word has length 13 [2020-10-21 23:17:12,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:12,434 INFO L481 AbstractCegarLoop]: Abstraction has 2200 states and 8453 transitions. [2020-10-21 23:17:12,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:17:12,434 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 8453 transitions. [2020-10-21 23:17:12,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-21 23:17:12,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:12,435 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:12,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-21 23:17:12,436 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 23:17:12,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:12,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1417153478, now seen corresponding path program 1 times [2020-10-21 23:17:12,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:12,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897419455] [2020-10-21 23:17:12,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:12,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:12,491 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 23:17:12,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897419455] [2020-10-21 23:17:12,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:12,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:17:12,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767827971] [2020-10-21 23:17:12,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:17:12,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:12,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:17:12,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:17:12,494 INFO L87 Difference]: Start difference. First operand 2200 states and 8453 transitions. Second operand 7 states. [2020-10-21 23:17:12,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:12,846 INFO L93 Difference]: Finished difference Result 4556 states and 14911 transitions. [2020-10-21 23:17:12,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:17:12,847 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-21 23:17:12,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:12,870 INFO L225 Difference]: With dead ends: 4556 [2020-10-21 23:17:12,870 INFO L226 Difference]: Without dead ends: 4546 [2020-10-21 23:17:12,871 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 23:17:12,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4546 states. [2020-10-21 23:17:12,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4546 to 2157. [2020-10-21 23:17:12,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2157 states. [2020-10-21 23:17:12,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2157 states to 2157 states and 8278 transitions. [2020-10-21 23:17:12,981 INFO L78 Accepts]: Start accepts. Automaton has 2157 states and 8278 transitions. Word has length 15 [2020-10-21 23:17:12,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:12,981 INFO L481 AbstractCegarLoop]: Abstraction has 2157 states and 8278 transitions. [2020-10-21 23:17:12,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:17:12,982 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 8278 transitions. [2020-10-21 23:17:12,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-21 23:17:12,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:12,982 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:12,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-21 23:17:12,983 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 23:17:12,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:12,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1419653318, now seen corresponding path program 2 times [2020-10-21 23:17:12,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:12,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99474418] [2020-10-21 23:17:12,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:13,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:13,083 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 23:17:13,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99474418] [2020-10-21 23:17:13,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:13,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:17:13,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403325426] [2020-10-21 23:17:13,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:17:13,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:13,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:17:13,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:17:13,085 INFO L87 Difference]: Start difference. First operand 2157 states and 8278 transitions. Second operand 7 states. [2020-10-21 23:17:13,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:13,393 INFO L93 Difference]: Finished difference Result 4612 states and 15111 transitions. [2020-10-21 23:17:13,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:17:13,394 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-21 23:17:13,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:13,410 INFO L225 Difference]: With dead ends: 4612 [2020-10-21 23:17:13,411 INFO L226 Difference]: Without dead ends: 4601 [2020-10-21 23:17:13,411 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 23:17:13,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2020-10-21 23:17:13,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 2035. [2020-10-21 23:17:13,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2035 states. [2020-10-21 23:17:13,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 7845 transitions. [2020-10-21 23:17:13,515 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 7845 transitions. Word has length 15 [2020-10-21 23:17:13,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:13,515 INFO L481 AbstractCegarLoop]: Abstraction has 2035 states and 7845 transitions. [2020-10-21 23:17:13,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:17:13,515 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 7845 transitions. [2020-10-21 23:17:13,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-21 23:17:13,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:13,516 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:13,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-21 23:17:13,517 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 23:17:13,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:13,517 INFO L82 PathProgramCache]: Analyzing trace with hash 795193170, now seen corresponding path program 1 times [2020-10-21 23:17:13,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:13,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020017053] [2020-10-21 23:17:13,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:13,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:13,558 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 23:17:13,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020017053] [2020-10-21 23:17:13,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:13,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:17:13,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258566919] [2020-10-21 23:17:13,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:17:13,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:13,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:17:13,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:17:13,560 INFO L87 Difference]: Start difference. First operand 2035 states and 7845 transitions. Second operand 5 states. [2020-10-21 23:17:13,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:13,676 INFO L93 Difference]: Finished difference Result 3265 states and 11681 transitions. [2020-10-21 23:17:13,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:17:13,676 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-21 23:17:13,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:13,691 INFO L225 Difference]: With dead ends: 3265 [2020-10-21 23:17:13,691 INFO L226 Difference]: Without dead ends: 3250 [2020-10-21 23:17:13,691 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 23:17:13,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3250 states. [2020-10-21 23:17:13,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3250 to 2281. [2020-10-21 23:17:13,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2281 states. [2020-10-21 23:17:13,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 8755 transitions. [2020-10-21 23:17:13,781 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 8755 transitions. Word has length 17 [2020-10-21 23:17:13,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:13,781 INFO L481 AbstractCegarLoop]: Abstraction has 2281 states and 8755 transitions. [2020-10-21 23:17:13,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:17:13,781 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 8755 transitions. [2020-10-21 23:17:13,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 23:17:13,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:13,783 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:13,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-21 23:17:13,783 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 23:17:13,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:13,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1006706982, now seen corresponding path program 1 times [2020-10-21 23:17:13,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:13,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75594411] [2020-10-21 23:17:13,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:13,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:13,847 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 23:17:13,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75594411] [2020-10-21 23:17:13,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706636799] [2020-10-21 23:17:13,848 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 23:17:13,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:13,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-21 23:17:13,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:17:14,060 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 23:17:14,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:17:14,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-21 23:17:14,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400354120] [2020-10-21 23:17:14,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-21 23:17:14,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:14,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-21 23:17:14,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-21 23:17:14,063 INFO L87 Difference]: Start difference. First operand 2281 states and 8755 transitions. Second operand 12 states. [2020-10-21 23:17:14,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:14,375 INFO L93 Difference]: Finished difference Result 4825 states and 15986 transitions. [2020-10-21 23:17:14,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:17:14,376 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-21 23:17:14,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:14,395 INFO L225 Difference]: With dead ends: 4825 [2020-10-21 23:17:14,395 INFO L226 Difference]: Without dead ends: 4813 [2020-10-21 23:17:14,396 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 23:17:14,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4813 states. [2020-10-21 23:17:14,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4813 to 2305. [2020-10-21 23:17:14,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2305 states. [2020-10-21 23:17:14,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 8815 transitions. [2020-10-21 23:17:14,511 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 8815 transitions. Word has length 19 [2020-10-21 23:17:14,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:14,511 INFO L481 AbstractCegarLoop]: Abstraction has 2305 states and 8815 transitions. [2020-10-21 23:17:14,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-21 23:17:14,511 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 8815 transitions. [2020-10-21 23:17:14,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 23:17:14,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:14,513 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:14,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:17:14,727 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 23:17:14,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:14,727 INFO L82 PathProgramCache]: Analyzing trace with hash -323556866, now seen corresponding path program 2 times [2020-10-21 23:17:14,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:14,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175232763] [2020-10-21 23:17:14,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:14,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:14,783 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 23:17:14,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175232763] [2020-10-21 23:17:14,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:14,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:17:14,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631003584] [2020-10-21 23:17:14,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:17:14,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:14,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:17:14,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:17:14,785 INFO L87 Difference]: Start difference. First operand 2305 states and 8815 transitions. Second operand 7 states. [2020-10-21 23:17:15,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:15,075 INFO L93 Difference]: Finished difference Result 4886 states and 16183 transitions. [2020-10-21 23:17:15,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:17:15,075 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-21 23:17:15,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:15,090 INFO L225 Difference]: With dead ends: 4886 [2020-10-21 23:17:15,091 INFO L226 Difference]: Without dead ends: 4869 [2020-10-21 23:17:15,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-21 23:17:15,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4869 states. [2020-10-21 23:17:15,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4869 to 2153. [2020-10-21 23:17:15,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2153 states. [2020-10-21 23:17:15,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 8255 transitions. [2020-10-21 23:17:15,199 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 8255 transitions. Word has length 19 [2020-10-21 23:17:15,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:15,200 INFO L481 AbstractCegarLoop]: Abstraction has 2153 states and 8255 transitions. [2020-10-21 23:17:15,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:17:15,200 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 8255 transitions. [2020-10-21 23:17:15,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 23:17:15,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:15,202 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:15,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-21 23:17:15,202 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 23:17:15,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:15,202 INFO L82 PathProgramCache]: Analyzing trace with hash -323554262, now seen corresponding path program 1 times [2020-10-21 23:17:15,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:15,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380913041] [2020-10-21 23:17:15,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:15,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:15,283 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 23:17:15,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380913041] [2020-10-21 23:17:15,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:15,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:17:15,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547962957] [2020-10-21 23:17:15,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:17:15,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:15,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:17:15,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:17:15,285 INFO L87 Difference]: Start difference. First operand 2153 states and 8255 transitions. Second operand 7 states. [2020-10-21 23:17:15,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:15,570 INFO L93 Difference]: Finished difference Result 4782 states and 15862 transitions. [2020-10-21 23:17:15,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:17:15,571 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-21 23:17:15,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:15,582 INFO L225 Difference]: With dead ends: 4782 [2020-10-21 23:17:15,582 INFO L226 Difference]: Without dead ends: 4765 [2020-10-21 23:17:15,582 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 23:17:15,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4765 states. [2020-10-21 23:17:15,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4765 to 2212. [2020-10-21 23:17:15,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2212 states. [2020-10-21 23:17:15,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2212 states to 2212 states and 8465 transitions. [2020-10-21 23:17:15,726 INFO L78 Accepts]: Start accepts. Automaton has 2212 states and 8465 transitions. Word has length 19 [2020-10-21 23:17:15,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:15,727 INFO L481 AbstractCegarLoop]: Abstraction has 2212 states and 8465 transitions. [2020-10-21 23:17:15,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:17:15,727 INFO L276 IsEmpty]: Start isEmpty. Operand 2212 states and 8465 transitions. [2020-10-21 23:17:15,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 23:17:15,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:15,728 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:15,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-21 23:17:15,729 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 23:17:15,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:15,729 INFO L82 PathProgramCache]: Analyzing trace with hash -307543382, now seen corresponding path program 2 times [2020-10-21 23:17:15,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:15,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16089600] [2020-10-21 23:17:15,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:15,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:15,790 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 23:17:15,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16089600] [2020-10-21 23:17:15,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:15,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:17:15,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806653024] [2020-10-21 23:17:15,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:17:15,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:15,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:17:15,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:17:15,792 INFO L87 Difference]: Start difference. First operand 2212 states and 8465 transitions. Second operand 7 states. [2020-10-21 23:17:16,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:16,131 INFO L93 Difference]: Finished difference Result 4774 states and 15828 transitions. [2020-10-21 23:17:16,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:17:16,131 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-21 23:17:16,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:16,144 INFO L225 Difference]: With dead ends: 4774 [2020-10-21 23:17:16,144 INFO L226 Difference]: Without dead ends: 4757 [2020-10-21 23:17:16,145 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 23:17:16,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4757 states. [2020-10-21 23:17:16,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4757 to 2150. [2020-10-21 23:17:16,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2150 states. [2020-10-21 23:17:16,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 8243 transitions. [2020-10-21 23:17:16,242 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 8243 transitions. Word has length 19 [2020-10-21 23:17:16,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:16,243 INFO L481 AbstractCegarLoop]: Abstraction has 2150 states and 8243 transitions. [2020-10-21 23:17:16,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:17:16,243 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 8243 transitions. [2020-10-21 23:17:16,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:17:16,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:16,244 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 23:17:16,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-21 23:17:16,245 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 23:17:16,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:16,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1077756158, now seen corresponding path program 1 times [2020-10-21 23:17:16,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:16,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835456454] [2020-10-21 23:17:16,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:16,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:16,319 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 23:17:16,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835456454] [2020-10-21 23:17:16,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931760630] [2020-10-21 23:17:16,320 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 23:17:16,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:16,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:17:16,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:17:16,532 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 23:17:16,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:17:16,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 23:17:16,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406190529] [2020-10-21 23:17:16,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 23:17:16,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:16,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 23:17:16,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 23:17:16,534 INFO L87 Difference]: Start difference. First operand 2150 states and 8243 transitions. Second operand 16 states. [2020-10-21 23:17:17,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:17,507 INFO L93 Difference]: Finished difference Result 6025 states and 18746 transitions. [2020-10-21 23:17:17,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:17:17,508 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-21 23:17:17,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:17,519 INFO L225 Difference]: With dead ends: 6025 [2020-10-21 23:17:17,519 INFO L226 Difference]: Without dead ends: 6017 [2020-10-21 23:17:17,520 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 23:17:17,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6017 states. [2020-10-21 23:17:17,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6017 to 2121. [2020-10-21 23:17:17,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2121 states. [2020-10-21 23:17:17,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2121 states to 2121 states and 8118 transitions. [2020-10-21 23:17:17,595 INFO L78 Accepts]: Start accepts. Automaton has 2121 states and 8118 transitions. Word has length 21 [2020-10-21 23:17:17,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:17,595 INFO L481 AbstractCegarLoop]: Abstraction has 2121 states and 8118 transitions. [2020-10-21 23:17:17,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 23:17:17,595 INFO L276 IsEmpty]: Start isEmpty. Operand 2121 states and 8118 transitions. [2020-10-21 23:17:17,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:17:17,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:17,597 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 23:17:17,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-10-21 23:17:17,812 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 23:17:17,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:17,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1093767038, now seen corresponding path program 2 times [2020-10-21 23:17:17,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:17,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066523348] [2020-10-21 23:17:17,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:17,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:17,914 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 23:17:17,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066523348] [2020-10-21 23:17:17,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590077154] [2020-10-21 23:17:17,916 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 23:17:17,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 23:17:17,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:17:17,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:17:17,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:17:18,121 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 23:17:18,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:17:18,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 23:17:18,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425063821] [2020-10-21 23:17:18,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 23:17:18,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:18,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 23:17:18,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 23:17:18,123 INFO L87 Difference]: Start difference. First operand 2121 states and 8118 transitions. Second operand 16 states. [2020-10-21 23:17:19,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:19,014 INFO L93 Difference]: Finished difference Result 5922 states and 18404 transitions. [2020-10-21 23:17:19,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:17:19,018 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-21 23:17:19,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:19,028 INFO L225 Difference]: With dead ends: 5922 [2020-10-21 23:17:19,029 INFO L226 Difference]: Without dead ends: 5911 [2020-10-21 23:17:19,029 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 23:17:19,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5911 states. [2020-10-21 23:17:19,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5911 to 2085. [2020-10-21 23:17:19,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2085 states. [2020-10-21 23:17:19,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 7975 transitions. [2020-10-21 23:17:19,119 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 7975 transitions. Word has length 21 [2020-10-21 23:17:19,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:19,120 INFO L481 AbstractCegarLoop]: Abstraction has 2085 states and 7975 transitions. [2020-10-21 23:17:19,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 23:17:19,120 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 7975 transitions. [2020-10-21 23:17:19,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:17:19,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:19,122 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:19,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:17:19,337 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 23:17:19,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:19,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1169886916, now seen corresponding path program 1 times [2020-10-21 23:17:19,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:19,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869714889] [2020-10-21 23:17:19,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:19,398 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 23:17:19,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869714889] [2020-10-21 23:17:19,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:19,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:17:19,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81890371] [2020-10-21 23:17:19,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:17:19,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:19,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:17:19,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:17:19,400 INFO L87 Difference]: Start difference. First operand 2085 states and 7975 transitions. Second operand 5 states. [2020-10-21 23:17:19,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:19,536 INFO L93 Difference]: Finished difference Result 3167 states and 11408 transitions. [2020-10-21 23:17:19,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:17:19,537 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-21 23:17:19,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:19,543 INFO L225 Difference]: With dead ends: 3167 [2020-10-21 23:17:19,543 INFO L226 Difference]: Without dead ends: 3151 [2020-10-21 23:17:19,543 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 23:17:19,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3151 states. [2020-10-21 23:17:19,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3151 to 2322. [2020-10-21 23:17:19,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2322 states. [2020-10-21 23:17:19,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2322 states to 2322 states and 8744 transitions. [2020-10-21 23:17:19,614 INFO L78 Accepts]: Start accepts. Automaton has 2322 states and 8744 transitions. Word has length 21 [2020-10-21 23:17:19,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:19,615 INFO L481 AbstractCegarLoop]: Abstraction has 2322 states and 8744 transitions. [2020-10-21 23:17:19,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:17:19,615 INFO L276 IsEmpty]: Start isEmpty. Operand 2322 states and 8744 transitions. [2020-10-21 23:17:19,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:17:19,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:19,617 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 23:17:19,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-21 23:17:19,618 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 23:17:19,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:19,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1700514858, now seen corresponding path program 3 times [2020-10-21 23:17:19,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:19,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035347252] [2020-10-21 23:17:19,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:19,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:19,702 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 23:17:19,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035347252] [2020-10-21 23:17:19,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:19,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:17:19,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505887210] [2020-10-21 23:17:19,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:17:19,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:19,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:17:19,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:17:19,704 INFO L87 Difference]: Start difference. First operand 2322 states and 8744 transitions. Second operand 9 states. [2020-10-21 23:17:20,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:20,433 INFO L93 Difference]: Finished difference Result 6235 states and 19513 transitions. [2020-10-21 23:17:20,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:17:20,434 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-21 23:17:20,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:20,445 INFO L225 Difference]: With dead ends: 6235 [2020-10-21 23:17:20,445 INFO L226 Difference]: Without dead ends: 6224 [2020-10-21 23:17:20,446 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 23:17:20,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6224 states. [2020-10-21 23:17:20,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6224 to 2235. [2020-10-21 23:17:20,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2235 states. [2020-10-21 23:17:20,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2235 states to 2235 states and 8410 transitions. [2020-10-21 23:17:20,517 INFO L78 Accepts]: Start accepts. Automaton has 2235 states and 8410 transitions. Word has length 21 [2020-10-21 23:17:20,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:20,517 INFO L481 AbstractCegarLoop]: Abstraction has 2235 states and 8410 transitions. [2020-10-21 23:17:20,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:17:20,517 INFO L276 IsEmpty]: Start isEmpty. Operand 2235 states and 8410 transitions. [2020-10-21 23:17:20,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:17:20,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:20,519 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 23:17:20,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-21 23:17:20,519 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 23:17:20,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:20,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1698015018, now seen corresponding path program 4 times [2020-10-21 23:17:20,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:20,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134662064] [2020-10-21 23:17:20,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:20,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:20,599 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 23:17:20,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134662064] [2020-10-21 23:17:20,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:20,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:17:20,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202561987] [2020-10-21 23:17:20,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:17:20,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:20,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:17:20,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:17:20,601 INFO L87 Difference]: Start difference. First operand 2235 states and 8410 transitions. Second operand 9 states. [2020-10-21 23:17:21,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:21,340 INFO L93 Difference]: Finished difference Result 6169 states and 19292 transitions. [2020-10-21 23:17:21,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:17:21,340 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-21 23:17:21,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:21,351 INFO L225 Difference]: With dead ends: 6169 [2020-10-21 23:17:21,351 INFO L226 Difference]: Without dead ends: 6155 [2020-10-21 23:17:21,351 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 23:17:21,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6155 states. [2020-10-21 23:17:21,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6155 to 2191. [2020-10-21 23:17:21,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2191 states. [2020-10-21 23:17:21,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2191 states to 2191 states and 8230 transitions. [2020-10-21 23:17:21,465 INFO L78 Accepts]: Start accepts. Automaton has 2191 states and 8230 transitions. Word has length 21 [2020-10-21 23:17:21,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:21,466 INFO L481 AbstractCegarLoop]: Abstraction has 2191 states and 8230 transitions. [2020-10-21 23:17:21,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:17:21,466 INFO L276 IsEmpty]: Start isEmpty. Operand 2191 states and 8230 transitions. [2020-10-21 23:17:21,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:17:21,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:21,467 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 23:17:21,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-21 23:17:21,467 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 23:17:21,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:21,468 INFO L82 PathProgramCache]: Analyzing trace with hash 817049814, now seen corresponding path program 5 times [2020-10-21 23:17:21,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:21,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266146111] [2020-10-21 23:17:21,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:21,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:21,544 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 23:17:21,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266146111] [2020-10-21 23:17:21,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:21,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:17:21,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394016466] [2020-10-21 23:17:21,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:17:21,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:21,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:17:21,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:17:21,547 INFO L87 Difference]: Start difference. First operand 2191 states and 8230 transitions. Second operand 9 states. [2020-10-21 23:17:22,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:22,259 INFO L93 Difference]: Finished difference Result 6158 states and 19267 transitions. [2020-10-21 23:17:22,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:17:22,260 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-21 23:17:22,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:22,271 INFO L225 Difference]: With dead ends: 6158 [2020-10-21 23:17:22,271 INFO L226 Difference]: Without dead ends: 6147 [2020-10-21 23:17:22,272 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 23:17:22,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6147 states. [2020-10-21 23:17:22,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6147 to 2096. [2020-10-21 23:17:22,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2096 states. [2020-10-21 23:17:22,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2096 states to 2096 states and 7876 transitions. [2020-10-21 23:17:22,354 INFO L78 Accepts]: Start accepts. Automaton has 2096 states and 7876 transitions. Word has length 21 [2020-10-21 23:17:22,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:22,355 INFO L481 AbstractCegarLoop]: Abstraction has 2096 states and 7876 transitions. [2020-10-21 23:17:22,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:17:22,355 INFO L276 IsEmpty]: Start isEmpty. Operand 2096 states and 7876 transitions. [2020-10-21 23:17:22,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:17:22,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:22,357 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 23:17:22,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-21 23:17:22,357 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 23:17:22,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:22,358 INFO L82 PathProgramCache]: Analyzing trace with hash 803538774, now seen corresponding path program 6 times [2020-10-21 23:17:22,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:22,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353124692] [2020-10-21 23:17:22,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:22,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:22,426 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 23:17:22,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353124692] [2020-10-21 23:17:22,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:22,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:17:22,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677890321] [2020-10-21 23:17:22,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:17:22,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:22,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:17:22,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:17:22,428 INFO L87 Difference]: Start difference. First operand 2096 states and 7876 transitions. Second operand 9 states. [2020-10-21 23:17:23,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:23,170 INFO L93 Difference]: Finished difference Result 6017 states and 18791 transitions. [2020-10-21 23:17:23,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:17:23,171 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-21 23:17:23,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:23,182 INFO L225 Difference]: With dead ends: 6017 [2020-10-21 23:17:23,182 INFO L226 Difference]: Without dead ends: 6002 [2020-10-21 23:17:23,183 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 23:17:23,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6002 states. [2020-10-21 23:17:23,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6002 to 1965. [2020-10-21 23:17:23,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2020-10-21 23:17:23,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 7429 transitions. [2020-10-21 23:17:23,320 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 7429 transitions. Word has length 21 [2020-10-21 23:17:23,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:23,320 INFO L481 AbstractCegarLoop]: Abstraction has 1965 states and 7429 transitions. [2020-10-21 23:17:23,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:17:23,320 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 7429 transitions. [2020-10-21 23:17:23,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-21 23:17:23,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:23,322 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:23,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-21 23:17:23,322 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 23:17:23,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:23,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1912181542, now seen corresponding path program 1 times [2020-10-21 23:17:23,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:23,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27765773] [2020-10-21 23:17:23,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:23,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 23:17:23,334 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 23:17:23,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 23:17:23,342 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 23:17:23,350 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-21 23:17:23,351 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-21 23:17:23,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-21 23:17:23,351 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-21 23:17:23,352 WARN L371 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-21 23:17:23,352 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-10-21 23:17:23,366 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,366 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,366 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,367 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,367 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,367 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,367 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,367 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,367 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,367 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,368 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,368 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,368 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,368 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,368 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,368 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,369 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,369 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,369 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,369 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,369 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,369 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,369 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,370 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,370 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,370 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,370 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,370 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,370 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,370 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,371 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,371 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,371 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,371 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,371 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,371 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,372 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,372 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,372 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,372 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,372 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,372 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,372 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,372 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,373 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,373 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,373 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,373 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,373 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,373 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,374 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,374 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,374 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,374 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,374 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,374 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,375 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,375 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,375 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,375 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,375 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,375 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,375 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,376 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,376 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,376 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,376 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,376 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,376 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,376 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,377 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,377 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,377 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,377 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,377 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,377 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,378 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,378 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,378 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,378 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,378 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,378 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,378 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,379 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,379 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,379 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,379 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,379 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,379 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,380 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,380 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,380 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,380 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,380 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,380 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,380 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,380 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,381 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,381 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,381 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,381 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,381 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,381 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,381 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,382 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,382 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,382 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,382 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,382 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,383 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,389 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,389 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,389 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,389 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,390 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,391 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,391 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,391 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,391 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,391 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,392 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,392 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,393 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,393 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,393 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,394 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,394 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,394 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,394 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,394 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,395 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,396 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,396 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,396 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,396 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,396 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,396 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,396 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,398 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,398 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,398 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,398 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,398 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,398 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,398 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,399 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,401 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,401 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,401 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,401 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,401 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,402 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,402 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,402 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,403 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,403 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,403 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,403 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,403 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,404 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,404 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,404 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,405 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,405 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,405 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,406 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,406 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,406 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,406 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,406 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:17:23,407 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-21 23:17:23,407 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-21 23:17:23,408 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 23:17:23,408 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 23:17:23,408 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-21 23:17:23,408 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 23:17:23,408 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 23:17:23,408 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 23:17:23,408 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 23:17:23,409 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 23:17:23,410 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-21 23:17:23,410 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 161 places, 151 transitions, 392 flow [2020-10-21 23:17:23,410 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 161 places, 151 transitions, 392 flow [2020-10-21 23:17:23,411 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 161 places, 151 transitions, 392 flow [2020-10-21 23:17:23,431 INFO L129 PetriNetUnfolder]: 9/161 cut-off events. [2020-10-21 23:17:23,432 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-21 23:17:23,434 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 23:17:23,439 INFO L116 LiptonReduction]: Number of co-enabled transitions 2744 [2020-10-21 23:17:25,188 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-21 23:17:25,760 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2020-10-21 23:17:25,965 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2020-10-21 23:17:26,272 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 94 [2020-10-21 23:17:26,403 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-21 23:17:26,407 INFO L131 LiptonReduction]: Checked pairs total: 4200 [2020-10-21 23:17:26,407 INFO L133 LiptonReduction]: Total number of compositions: 162 [2020-10-21 23:17:26,408 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 39 transitions, 168 flow [2020-10-21 23:17:26,764 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 6191 states. [2020-10-21 23:17:26,764 INFO L276 IsEmpty]: Start isEmpty. Operand 6191 states. [2020-10-21 23:17:26,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-21 23:17:26,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:26,764 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-21 23:17:26,765 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 23:17:26,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:26,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1311531, now seen corresponding path program 1 times [2020-10-21 23:17:26,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:26,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147442255] [2020-10-21 23:17:26,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:26,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:26,808 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 23:17:26,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147442255] [2020-10-21 23:17:26,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:26,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-21 23:17:26,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887881719] [2020-10-21 23:17:26,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 23:17:26,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:26,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 23:17:26,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:17:26,810 INFO L87 Difference]: Start difference. First operand 6191 states. Second operand 3 states. [2020-10-21 23:17:26,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:26,893 INFO L93 Difference]: Finished difference Result 5844 states and 26316 transitions. [2020-10-21 23:17:26,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 23:17:26,894 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-21 23:17:26,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:26,922 INFO L225 Difference]: With dead ends: 5844 [2020-10-21 23:17:26,923 INFO L226 Difference]: Without dead ends: 5479 [2020-10-21 23:17:26,925 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 23:17:27,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5479 states. [2020-10-21 23:17:27,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5479 to 5479. [2020-10-21 23:17:27,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5479 states. [2020-10-21 23:17:27,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5479 states to 5479 states and 24493 transitions. [2020-10-21 23:17:27,255 INFO L78 Accepts]: Start accepts. Automaton has 5479 states and 24493 transitions. Word has length 3 [2020-10-21 23:17:27,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:27,256 INFO L481 AbstractCegarLoop]: Abstraction has 5479 states and 24493 transitions. [2020-10-21 23:17:27,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 23:17:27,256 INFO L276 IsEmpty]: Start isEmpty. Operand 5479 states and 24493 transitions. [2020-10-21 23:17:27,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 23:17:27,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:27,257 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:27,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-21 23:17:27,258 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 23:17:27,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:27,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1486087653, now seen corresponding path program 1 times [2020-10-21 23:17:27,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:27,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630602953] [2020-10-21 23:17:27,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:27,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:27,317 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 23:17:27,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630602953] [2020-10-21 23:17:27,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:27,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:17:27,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137032687] [2020-10-21 23:17:27,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:17:27,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:27,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:17:27,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:17:27,319 INFO L87 Difference]: Start difference. First operand 5479 states and 24493 transitions. Second operand 5 states. [2020-10-21 23:17:27,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:27,535 INFO L93 Difference]: Finished difference Result 9673 states and 40333 transitions. [2020-10-21 23:17:27,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:17:27,537 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-21 23:17:27,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:27,585 INFO L225 Difference]: With dead ends: 9673 [2020-10-21 23:17:27,585 INFO L226 Difference]: Without dead ends: 9666 [2020-10-21 23:17:27,586 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 23:17:28,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9666 states. [2020-10-21 23:17:28,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9666 to 6331. [2020-10-21 23:17:28,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6331 states. [2020-10-21 23:17:28,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6331 states to 6331 states and 28544 transitions. [2020-10-21 23:17:28,689 INFO L78 Accepts]: Start accepts. Automaton has 6331 states and 28544 transitions. Word has length 9 [2020-10-21 23:17:28,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:28,689 INFO L481 AbstractCegarLoop]: Abstraction has 6331 states and 28544 transitions. [2020-10-21 23:17:28,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:17:28,689 INFO L276 IsEmpty]: Start isEmpty. Operand 6331 states and 28544 transitions. [2020-10-21 23:17:28,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 23:17:28,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:28,690 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:28,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-21 23:17:28,690 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 23:17:28,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:28,691 INFO L82 PathProgramCache]: Analyzing trace with hash -2078441721, now seen corresponding path program 1 times [2020-10-21 23:17:28,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:28,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540010744] [2020-10-21 23:17:28,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:28,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:28,730 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 23:17:28,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540010744] [2020-10-21 23:17:28,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:28,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:17:28,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799631781] [2020-10-21 23:17:28,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:17:28,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:28,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:17:28,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:17:28,732 INFO L87 Difference]: Start difference. First operand 6331 states and 28544 transitions. Second operand 5 states. [2020-10-21 23:17:28,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:28,887 INFO L93 Difference]: Finished difference Result 11081 states and 46826 transitions. [2020-10-21 23:17:28,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:17:28,888 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-21 23:17:28,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:28,919 INFO L225 Difference]: With dead ends: 11081 [2020-10-21 23:17:28,919 INFO L226 Difference]: Without dead ends: 11068 [2020-10-21 23:17:28,919 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 23:17:29,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11068 states. [2020-10-21 23:17:29,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11068 to 7391. [2020-10-21 23:17:29,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7391 states. [2020-10-21 23:17:29,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7391 states to 7391 states and 33694 transitions. [2020-10-21 23:17:29,171 INFO L78 Accepts]: Start accepts. Automaton has 7391 states and 33694 transitions. Word has length 13 [2020-10-21 23:17:29,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:29,172 INFO L481 AbstractCegarLoop]: Abstraction has 7391 states and 33694 transitions. [2020-10-21 23:17:29,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:17:29,172 INFO L276 IsEmpty]: Start isEmpty. Operand 7391 states and 33694 transitions. [2020-10-21 23:17:29,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-21 23:17:29,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:29,172 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:29,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-21 23:17:29,172 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 23:17:29,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:29,173 INFO L82 PathProgramCache]: Analyzing trace with hash -80896491, now seen corresponding path program 1 times [2020-10-21 23:17:29,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:29,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058130338] [2020-10-21 23:17:29,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:29,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:29,216 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 23:17:29,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058130338] [2020-10-21 23:17:29,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078496670] [2020-10-21 23:17:29,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 23:17:29,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:29,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-21 23:17:29,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:17:29,373 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 23:17:29,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:17:29,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-21 23:17:29,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821052002] [2020-10-21 23:17:29,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-21 23:17:29,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:29,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-21 23:17:29,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-21 23:17:29,375 INFO L87 Difference]: Start difference. First operand 7391 states and 33694 transitions. Second operand 12 states. [2020-10-21 23:17:29,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:29,993 INFO L93 Difference]: Finished difference Result 16749 states and 66010 transitions. [2020-10-21 23:17:29,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:17:29,993 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-21 23:17:29,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:30,038 INFO L225 Difference]: With dead ends: 16749 [2020-10-21 23:17:30,039 INFO L226 Difference]: Without dead ends: 16736 [2020-10-21 23:17:30,039 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 23:17:30,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16736 states. [2020-10-21 23:17:30,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16736 to 7303. [2020-10-21 23:17:30,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7303 states. [2020-10-21 23:17:30,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7303 states to 7303 states and 33260 transitions. [2020-10-21 23:17:30,342 INFO L78 Accepts]: Start accepts. Automaton has 7303 states and 33260 transitions. Word has length 15 [2020-10-21 23:17:30,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:30,343 INFO L481 AbstractCegarLoop]: Abstraction has 7303 states and 33260 transitions. [2020-10-21 23:17:30,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-21 23:17:30,343 INFO L276 IsEmpty]: Start isEmpty. Operand 7303 states and 33260 transitions. [2020-10-21 23:17:30,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-21 23:17:30,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:30,343 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:30,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-10-21 23:17:30,550 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 23:17:30,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:30,551 INFO L82 PathProgramCache]: Analyzing trace with hash -222679403, now seen corresponding path program 2 times [2020-10-21 23:17:30,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:30,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550025957] [2020-10-21 23:17:30,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:30,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:30,620 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 23:17:30,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550025957] [2020-10-21 23:17:30,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:30,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:17:30,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782487705] [2020-10-21 23:17:30,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:17:30,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:30,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:17:30,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:17:30,622 INFO L87 Difference]: Start difference. First operand 7303 states and 33260 transitions. Second operand 7 states. [2020-10-21 23:17:31,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:31,067 INFO L93 Difference]: Finished difference Result 17085 states and 67393 transitions. [2020-10-21 23:17:31,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:17:31,068 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-21 23:17:31,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:31,141 INFO L225 Difference]: With dead ends: 17085 [2020-10-21 23:17:31,141 INFO L226 Difference]: Without dead ends: 17071 [2020-10-21 23:17:31,142 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 23:17:31,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17071 states. [2020-10-21 23:17:31,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17071 to 7048. [2020-10-21 23:17:31,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7048 states. [2020-10-21 23:17:32,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7048 states to 7048 states and 32136 transitions. [2020-10-21 23:17:32,265 INFO L78 Accepts]: Start accepts. Automaton has 7048 states and 32136 transitions. Word has length 15 [2020-10-21 23:17:32,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:32,265 INFO L481 AbstractCegarLoop]: Abstraction has 7048 states and 32136 transitions. [2020-10-21 23:17:32,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:17:32,266 INFO L276 IsEmpty]: Start isEmpty. Operand 7048 states and 32136 transitions. [2020-10-21 23:17:32,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-21 23:17:32,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:32,266 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:32,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-21 23:17:32,267 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 23:17:32,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:32,267 INFO L82 PathProgramCache]: Analyzing trace with hash -681474966, now seen corresponding path program 1 times [2020-10-21 23:17:32,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:32,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567333911] [2020-10-21 23:17:32,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:32,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:32,309 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 23:17:32,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567333911] [2020-10-21 23:17:32,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:32,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:17:32,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973185376] [2020-10-21 23:17:32,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:17:32,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:32,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:17:32,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:17:32,311 INFO L87 Difference]: Start difference. First operand 7048 states and 32136 transitions. Second operand 5 states. [2020-10-21 23:17:32,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:32,474 INFO L93 Difference]: Finished difference Result 12234 states and 52488 transitions. [2020-10-21 23:17:32,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:17:32,474 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-21 23:17:32,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:32,508 INFO L225 Difference]: With dead ends: 12234 [2020-10-21 23:17:32,509 INFO L226 Difference]: Without dead ends: 12212 [2020-10-21 23:17:32,509 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 23:17:32,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12212 states. [2020-10-21 23:17:32,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12212 to 8342. [2020-10-21 23:17:32,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8342 states. [2020-10-21 23:17:32,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8342 states to 8342 states and 38278 transitions. [2020-10-21 23:17:32,782 INFO L78 Accepts]: Start accepts. Automaton has 8342 states and 38278 transitions. Word has length 17 [2020-10-21 23:17:32,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:32,783 INFO L481 AbstractCegarLoop]: Abstraction has 8342 states and 38278 transitions. [2020-10-21 23:17:32,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:17:32,783 INFO L276 IsEmpty]: Start isEmpty. Operand 8342 states and 38278 transitions. [2020-10-21 23:17:32,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 23:17:32,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:32,784 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:32,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-21 23:17:32,784 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 23:17:32,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:32,784 INFO L82 PathProgramCache]: Analyzing trace with hash -66098056, now seen corresponding path program 1 times [2020-10-21 23:17:32,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:32,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106525992] [2020-10-21 23:17:32,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:32,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:32,841 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 23:17:32,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106525992] [2020-10-21 23:17:32,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267651904] [2020-10-21 23:17:32,842 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 23:17:32,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:32,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-21 23:17:32,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:17:32,987 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 23:17:32,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:17:32,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-21 23:17:32,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167805567] [2020-10-21 23:17:32,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-21 23:17:32,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:32,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-21 23:17:32,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-21 23:17:32,989 INFO L87 Difference]: Start difference. First operand 8342 states and 38278 transitions. Second operand 12 states. [2020-10-21 23:17:33,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:33,433 INFO L93 Difference]: Finished difference Result 19016 states and 76191 transitions. [2020-10-21 23:17:33,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:17:33,434 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-21 23:17:33,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:33,487 INFO L225 Difference]: With dead ends: 19016 [2020-10-21 23:17:33,487 INFO L226 Difference]: Without dead ends: 18998 [2020-10-21 23:17:33,488 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 23:17:33,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18998 states. [2020-10-21 23:17:33,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18998 to 8452. [2020-10-21 23:17:33,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8452 states. [2020-10-21 23:17:33,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8452 states to 8452 states and 38704 transitions. [2020-10-21 23:17:33,981 INFO L78 Accepts]: Start accepts. Automaton has 8452 states and 38704 transitions. Word has length 19 [2020-10-21 23:17:33,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:33,982 INFO L481 AbstractCegarLoop]: Abstraction has 8452 states and 38704 transitions. [2020-10-21 23:17:33,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-21 23:17:33,982 INFO L276 IsEmpty]: Start isEmpty. Operand 8452 states and 38704 transitions. [2020-10-21 23:17:33,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 23:17:33,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:33,983 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:34,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-21 23:17:34,184 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 23:17:34,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:34,184 INFO L82 PathProgramCache]: Analyzing trace with hash -2062391496, now seen corresponding path program 2 times [2020-10-21 23:17:34,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:34,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402751983] [2020-10-21 23:17:34,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:34,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:34,232 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 23:17:34,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402751983] [2020-10-21 23:17:34,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:34,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:17:34,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871209800] [2020-10-21 23:17:34,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:17:34,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:34,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:17:34,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:17:34,234 INFO L87 Difference]: Start difference. First operand 8452 states and 38704 transitions. Second operand 7 states. [2020-10-21 23:17:34,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:34,687 INFO L93 Difference]: Finished difference Result 19420 states and 77854 transitions. [2020-10-21 23:17:34,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:17:34,688 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-21 23:17:34,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:34,772 INFO L225 Difference]: With dead ends: 19420 [2020-10-21 23:17:34,772 INFO L226 Difference]: Without dead ends: 19395 [2020-10-21 23:17:34,772 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 23:17:34,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19395 states. [2020-10-21 23:17:35,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19395 to 8129. [2020-10-21 23:17:35,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8129 states. [2020-10-21 23:17:35,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8129 states to 8129 states and 37298 transitions. [2020-10-21 23:17:35,188 INFO L78 Accepts]: Start accepts. Automaton has 8129 states and 37298 transitions. Word has length 19 [2020-10-21 23:17:35,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:35,188 INFO L481 AbstractCegarLoop]: Abstraction has 8129 states and 37298 transitions. [2020-10-21 23:17:35,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:17:35,188 INFO L276 IsEmpty]: Start isEmpty. Operand 8129 states and 37298 transitions. [2020-10-21 23:17:35,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 23:17:35,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:35,189 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:35,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-21 23:17:35,190 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 23:17:35,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:35,190 INFO L82 PathProgramCache]: Analyzing trace with hash -2062399215, now seen corresponding path program 1 times [2020-10-21 23:17:35,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:35,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548518589] [2020-10-21 23:17:35,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:35,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:35,255 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 23:17:35,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548518589] [2020-10-21 23:17:35,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:35,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:17:35,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894677438] [2020-10-21 23:17:35,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:17:35,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:35,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:17:35,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:17:35,257 INFO L87 Difference]: Start difference. First operand 8129 states and 37298 transitions. Second operand 7 states. [2020-10-21 23:17:35,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:35,842 INFO L93 Difference]: Finished difference Result 19373 states and 77785 transitions. [2020-10-21 23:17:35,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:17:35,846 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-21 23:17:35,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:35,903 INFO L225 Difference]: With dead ends: 19373 [2020-10-21 23:17:35,903 INFO L226 Difference]: Without dead ends: 19348 [2020-10-21 23:17:35,904 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 23:17:36,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19348 states. [2020-10-21 23:17:36,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19348 to 8375. [2020-10-21 23:17:36,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8375 states. [2020-10-21 23:17:36,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8375 states to 8375 states and 38394 transitions. [2020-10-21 23:17:36,234 INFO L78 Accepts]: Start accepts. Automaton has 8375 states and 38394 transitions. Word has length 19 [2020-10-21 23:17:36,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:36,235 INFO L481 AbstractCegarLoop]: Abstraction has 8375 states and 38394 transitions. [2020-10-21 23:17:36,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:17:36,235 INFO L276 IsEmpty]: Start isEmpty. Operand 8375 states and 38394 transitions. [2020-10-21 23:17:36,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 23:17:36,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:36,236 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:36,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-21 23:17:36,236 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 23:17:36,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:36,237 INFO L82 PathProgramCache]: Analyzing trace with hash -2050465455, now seen corresponding path program 2 times [2020-10-21 23:17:36,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:36,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090197911] [2020-10-21 23:17:36,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:36,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:36,278 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 23:17:36,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090197911] [2020-10-21 23:17:36,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:36,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:17:36,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580384239] [2020-10-21 23:17:36,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:17:36,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:36,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:17:36,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:17:36,280 INFO L87 Difference]: Start difference. First operand 8375 states and 38394 transitions. Second operand 7 states. [2020-10-21 23:17:36,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:36,739 INFO L93 Difference]: Finished difference Result 19555 states and 78564 transitions. [2020-10-21 23:17:36,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:17:36,740 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-21 23:17:36,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:36,817 INFO L225 Difference]: With dead ends: 19555 [2020-10-21 23:17:36,817 INFO L226 Difference]: Without dead ends: 19530 [2020-10-21 23:17:36,818 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 23:17:37,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19530 states. [2020-10-21 23:17:37,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19530 to 8317. [2020-10-21 23:17:37,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8317 states. [2020-10-21 23:17:37,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8317 states to 8317 states and 38184 transitions. [2020-10-21 23:17:37,255 INFO L78 Accepts]: Start accepts. Automaton has 8317 states and 38184 transitions. Word has length 19 [2020-10-21 23:17:37,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:37,255 INFO L481 AbstractCegarLoop]: Abstraction has 8317 states and 38184 transitions. [2020-10-21 23:17:37,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:17:37,255 INFO L276 IsEmpty]: Start isEmpty. Operand 8317 states and 38184 transitions. [2020-10-21 23:17:37,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:17:37,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:37,257 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 23:17:37,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-21 23:17:37,257 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 23:17:37,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:37,257 INFO L82 PathProgramCache]: Analyzing trace with hash 904291743, now seen corresponding path program 1 times [2020-10-21 23:17:37,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:37,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498419664] [2020-10-21 23:17:37,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:37,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:37,319 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 23:17:37,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498419664] [2020-10-21 23:17:37,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619024305] [2020-10-21 23:17:37,319 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 23:17:37,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:37,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:17:37,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:17:37,503 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 23:17:37,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:17:37,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 23:17:37,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894244005] [2020-10-21 23:17:37,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 23:17:37,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:37,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 23:17:37,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 23:17:37,506 INFO L87 Difference]: Start difference. First operand 8317 states and 38184 transitions. Second operand 16 states. [2020-10-21 23:17:38,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:38,530 INFO L93 Difference]: Finished difference Result 26969 states and 101544 transitions. [2020-10-21 23:17:38,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:17:38,531 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-21 23:17:38,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:38,603 INFO L225 Difference]: With dead ends: 26969 [2020-10-21 23:17:38,603 INFO L226 Difference]: Without dead ends: 26957 [2020-10-21 23:17:38,604 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 23:17:38,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26957 states. [2020-10-21 23:17:38,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26957 to 8208. [2020-10-21 23:17:38,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8208 states. [2020-10-21 23:17:39,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8208 states to 8208 states and 37640 transitions. [2020-10-21 23:17:39,025 INFO L78 Accepts]: Start accepts. Automaton has 8208 states and 37640 transitions. Word has length 21 [2020-10-21 23:17:39,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:39,025 INFO L481 AbstractCegarLoop]: Abstraction has 8208 states and 37640 transitions. [2020-10-21 23:17:39,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 23:17:39,026 INFO L276 IsEmpty]: Start isEmpty. Operand 8208 states and 37640 transitions. [2020-10-21 23:17:39,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:17:39,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:39,027 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 23:17:39,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:17:39,243 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 23:17:39,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:39,243 INFO L82 PathProgramCache]: Analyzing trace with hash 916225503, now seen corresponding path program 2 times [2020-10-21 23:17:39,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:39,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811354331] [2020-10-21 23:17:39,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:39,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:39,307 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 23:17:39,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811354331] [2020-10-21 23:17:39,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075217495] [2020-10-21 23:17:39,308 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 23:17:39,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 23:17:39,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:17:39,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:17:39,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:17:39,506 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 23:17:39,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:17:39,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 23:17:39,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627000304] [2020-10-21 23:17:39,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 23:17:39,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:39,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 23:17:39,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 23:17:39,508 INFO L87 Difference]: Start difference. First operand 8208 states and 37640 transitions. Second operand 16 states. [2020-10-21 23:17:40,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:40,658 INFO L93 Difference]: Finished difference Result 26669 states and 100297 transitions. [2020-10-21 23:17:40,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:17:40,659 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-21 23:17:40,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:40,723 INFO L225 Difference]: With dead ends: 26669 [2020-10-21 23:17:40,723 INFO L226 Difference]: Without dead ends: 26653 [2020-10-21 23:17:40,724 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 23:17:40,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26653 states. [2020-10-21 23:17:41,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26653 to 8091. [2020-10-21 23:17:41,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8091 states. [2020-10-21 23:17:41,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8091 states to 8091 states and 37076 transitions. [2020-10-21 23:17:41,121 INFO L78 Accepts]: Start accepts. Automaton has 8091 states and 37076 transitions. Word has length 21 [2020-10-21 23:17:41,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:41,122 INFO L481 AbstractCegarLoop]: Abstraction has 8091 states and 37076 transitions. [2020-10-21 23:17:41,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 23:17:41,122 INFO L276 IsEmpty]: Start isEmpty. Operand 8091 states and 37076 transitions. [2020-10-21 23:17:41,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:17:41,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:41,123 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 23:17:41,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-10-21 23:17:41,329 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 23:17:41,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:41,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1978290081, now seen corresponding path program 3 times [2020-10-21 23:17:41,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:41,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73664192] [2020-10-21 23:17:41,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:41,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:41,397 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 23:17:41,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73664192] [2020-10-21 23:17:41,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:41,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:17:41,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319016777] [2020-10-21 23:17:41,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:17:41,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:41,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:17:41,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:17:41,399 INFO L87 Difference]: Start difference. First operand 8091 states and 37076 transitions. Second operand 9 states. [2020-10-21 23:17:42,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:42,357 INFO L93 Difference]: Finished difference Result 26678 states and 100382 transitions. [2020-10-21 23:17:42,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:17:42,358 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-21 23:17:42,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:42,438 INFO L225 Difference]: With dead ends: 26678 [2020-10-21 23:17:42,439 INFO L226 Difference]: Without dead ends: 26666 [2020-10-21 23:17:42,439 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 23:17:42,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26666 states. [2020-10-21 23:17:42,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26666 to 7869. [2020-10-21 23:17:42,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7869 states. [2020-10-21 23:17:42,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7869 states to 7869 states and 36086 transitions. [2020-10-21 23:17:42,978 INFO L78 Accepts]: Start accepts. Automaton has 7869 states and 36086 transitions. Word has length 21 [2020-10-21 23:17:42,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:42,978 INFO L481 AbstractCegarLoop]: Abstraction has 7869 states and 36086 transitions. [2020-10-21 23:17:42,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:17:42,978 INFO L276 IsEmpty]: Start isEmpty. Operand 7869 states and 36086 transitions. [2020-10-21 23:17:42,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:17:42,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:42,979 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 23:17:42,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-21 23:17:42,980 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 23:17:42,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:42,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1985700321, now seen corresponding path program 4 times [2020-10-21 23:17:42,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:42,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347308568] [2020-10-21 23:17:42,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:42,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:43,057 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 23:17:43,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347308568] [2020-10-21 23:17:43,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:43,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:17:43,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968149030] [2020-10-21 23:17:43,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:17:43,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:43,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:17:43,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:17:43,059 INFO L87 Difference]: Start difference. First operand 7869 states and 36086 transitions. Second operand 9 states. [2020-10-21 23:17:43,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:43,923 INFO L93 Difference]: Finished difference Result 26497 states and 99670 transitions. [2020-10-21 23:17:43,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:17:43,924 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-21 23:17:43,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:43,991 INFO L225 Difference]: With dead ends: 26497 [2020-10-21 23:17:43,992 INFO L226 Difference]: Without dead ends: 26481 [2020-10-21 23:17:43,992 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 23:17:44,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26481 states. [2020-10-21 23:17:44,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26481 to 7756. [2020-10-21 23:17:44,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7756 states. [2020-10-21 23:17:44,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7756 states to 7756 states and 35534 transitions. [2020-10-21 23:17:44,392 INFO L78 Accepts]: Start accepts. Automaton has 7756 states and 35534 transitions. Word has length 21 [2020-10-21 23:17:44,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:44,392 INFO L481 AbstractCegarLoop]: Abstraction has 7756 states and 35534 transitions. [2020-10-21 23:17:44,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:17:44,392 INFO L276 IsEmpty]: Start isEmpty. Operand 7756 states and 35534 transitions. [2020-10-21 23:17:44,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:17:44,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:44,394 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:44,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-21 23:17:44,394 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 23:17:44,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:44,394 INFO L82 PathProgramCache]: Analyzing trace with hash -522836100, now seen corresponding path program 1 times [2020-10-21 23:17:44,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:44,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319233462] [2020-10-21 23:17:44,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:44,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:44,426 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 23:17:44,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319233462] [2020-10-21 23:17:44,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:44,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:17:44,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132200846] [2020-10-21 23:17:44,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:17:44,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:44,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:17:44,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:17:44,428 INFO L87 Difference]: Start difference. First operand 7756 states and 35534 transitions. Second operand 5 states. [2020-10-21 23:17:44,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:44,607 INFO L93 Difference]: Finished difference Result 13259 states and 57521 transitions. [2020-10-21 23:17:44,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:17:44,608 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-21 23:17:44,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:44,647 INFO L225 Difference]: With dead ends: 13259 [2020-10-21 23:17:44,647 INFO L226 Difference]: Without dead ends: 13228 [2020-10-21 23:17:44,647 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 23:17:44,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13228 states. [2020-10-21 23:17:45,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13228 to 9263. [2020-10-21 23:17:45,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9263 states. [2020-10-21 23:17:45,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9263 states to 9263 states and 42388 transitions. [2020-10-21 23:17:45,052 INFO L78 Accepts]: Start accepts. Automaton has 9263 states and 42388 transitions. Word has length 21 [2020-10-21 23:17:45,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:45,052 INFO L481 AbstractCegarLoop]: Abstraction has 9263 states and 42388 transitions. [2020-10-21 23:17:45,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:17:45,053 INFO L276 IsEmpty]: Start isEmpty. Operand 9263 states and 42388 transitions. [2020-10-21 23:17:45,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:17:45,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:45,054 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 23:17:45,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-21 23:17:45,054 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 23:17:45,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:45,055 INFO L82 PathProgramCache]: Analyzing trace with hash 892708447, now seen corresponding path program 5 times [2020-10-21 23:17:45,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:45,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505125732] [2020-10-21 23:17:45,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:45,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:45,130 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 23:17:45,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505125732] [2020-10-21 23:17:45,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:45,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:17:45,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612960381] [2020-10-21 23:17:45,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:17:45,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:45,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:17:45,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:17:45,132 INFO L87 Difference]: Start difference. First operand 9263 states and 42388 transitions. Second operand 9 states. [2020-10-21 23:17:46,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:46,020 INFO L93 Difference]: Finished difference Result 29796 states and 113861 transitions. [2020-10-21 23:17:46,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:17:46,021 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-21 23:17:46,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:46,089 INFO L225 Difference]: With dead ends: 29796 [2020-10-21 23:17:46,089 INFO L226 Difference]: Without dead ends: 29778 [2020-10-21 23:17:46,089 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 23:17:46,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29778 states. [2020-10-21 23:17:46,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29778 to 8972. [2020-10-21 23:17:46,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8972 states. [2020-10-21 23:17:46,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8972 states to 8972 states and 41051 transitions. [2020-10-21 23:17:46,537 INFO L78 Accepts]: Start accepts. Automaton has 8972 states and 41051 transitions. Word has length 21 [2020-10-21 23:17:46,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:46,538 INFO L481 AbstractCegarLoop]: Abstraction has 8972 states and 41051 transitions. [2020-10-21 23:17:46,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:17:46,538 INFO L276 IsEmpty]: Start isEmpty. Operand 8972 states and 41051 transitions. [2020-10-21 23:17:46,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:17:46,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:46,540 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 23:17:46,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-21 23:17:46,540 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 23:17:46,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:46,541 INFO L82 PathProgramCache]: Analyzing trace with hash 912052447, now seen corresponding path program 6 times [2020-10-21 23:17:46,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:46,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869736427] [2020-10-21 23:17:46,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:46,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:46,611 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 23:17:46,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869736427] [2020-10-21 23:17:46,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:46,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:17:46,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390440053] [2020-10-21 23:17:46,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:17:46,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:46,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:17:46,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:17:46,613 INFO L87 Difference]: Start difference. First operand 8972 states and 41051 transitions. Second operand 9 states. [2020-10-21 23:17:47,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:47,721 INFO L93 Difference]: Finished difference Result 29387 states and 112119 transitions. [2020-10-21 23:17:47,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:17:47,721 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-21 23:17:47,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:47,800 INFO L225 Difference]: With dead ends: 29387 [2020-10-21 23:17:47,800 INFO L226 Difference]: Without dead ends: 29364 [2020-10-21 23:17:47,801 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 23:17:47,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29364 states. [2020-10-21 23:17:48,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29364 to 8573. [2020-10-21 23:17:48,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8573 states. [2020-10-21 23:17:48,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8573 states to 8573 states and 39353 transitions. [2020-10-21 23:17:48,273 INFO L78 Accepts]: Start accepts. Automaton has 8573 states and 39353 transitions. Word has length 21 [2020-10-21 23:17:48,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:48,274 INFO L481 AbstractCegarLoop]: Abstraction has 8573 states and 39353 transitions. [2020-10-21 23:17:48,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:17:48,274 INFO L276 IsEmpty]: Start isEmpty. Operand 8573 states and 39353 transitions. [2020-10-21 23:17:48,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 23:17:48,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:48,275 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:48,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-21 23:17:48,276 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 23:17:48,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:48,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1391110006, now seen corresponding path program 1 times [2020-10-21 23:17:48,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:48,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185150402] [2020-10-21 23:17:48,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:48,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:48,328 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 23:17:48,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185150402] [2020-10-21 23:17:48,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293868913] [2020-10-21 23:17:48,329 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 23:17:48,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:48,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-21 23:17:48,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:17:48,475 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 23:17:48,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:17:48,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-21 23:17:48,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616516745] [2020-10-21 23:17:48,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-21 23:17:48,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:48,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-21 23:17:48,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-21 23:17:48,477 INFO L87 Difference]: Start difference. First operand 8573 states and 39353 transitions. Second operand 12 states. [2020-10-21 23:17:48,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:48,922 INFO L93 Difference]: Finished difference Result 19727 states and 80274 transitions. [2020-10-21 23:17:48,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:17:48,923 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-21 23:17:48,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:48,973 INFO L225 Difference]: With dead ends: 19727 [2020-10-21 23:17:48,974 INFO L226 Difference]: Without dead ends: 19703 [2020-10-21 23:17:48,975 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 23:17:49,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19703 states. [2020-10-21 23:17:49,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19703 to 8847. [2020-10-21 23:17:49,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8847 states. [2020-10-21 23:17:49,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8847 states to 8847 states and 40495 transitions. [2020-10-21 23:17:49,317 INFO L78 Accepts]: Start accepts. Automaton has 8847 states and 40495 transitions. Word has length 23 [2020-10-21 23:17:49,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:49,317 INFO L481 AbstractCegarLoop]: Abstraction has 8847 states and 40495 transitions. [2020-10-21 23:17:49,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-21 23:17:49,318 INFO L276 IsEmpty]: Start isEmpty. Operand 8847 states and 40495 transitions. [2020-10-21 23:17:49,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 23:17:49,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:49,320 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:49,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-10-21 23:17:49,535 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 23:17:49,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:49,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1213836140, now seen corresponding path program 1 times [2020-10-21 23:17:49,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:49,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189439152] [2020-10-21 23:17:49,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:49,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:49,586 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 23:17:49,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189439152] [2020-10-21 23:17:49,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978459770] [2020-10-21 23:17:49,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 23:17:49,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:49,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-21 23:17:49,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:17:49,786 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 23:17:49,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:17:49,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-21 23:17:49,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173563375] [2020-10-21 23:17:49,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-21 23:17:49,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:49,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-21 23:17:49,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-21 23:17:49,789 INFO L87 Difference]: Start difference. First operand 8847 states and 40495 transitions. Second operand 12 states. [2020-10-21 23:17:50,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:50,348 INFO L93 Difference]: Finished difference Result 20670 states and 84217 transitions. [2020-10-21 23:17:50,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:17:50,349 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-21 23:17:50,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:50,402 INFO L225 Difference]: With dead ends: 20670 [2020-10-21 23:17:50,402 INFO L226 Difference]: Without dead ends: 20642 [2020-10-21 23:17:50,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 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 23:17:50,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20642 states. [2020-10-21 23:17:50,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20642 to 9111. [2020-10-21 23:17:50,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9111 states. [2020-10-21 23:17:50,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9111 states to 9111 states and 41667 transitions. [2020-10-21 23:17:50,765 INFO L78 Accepts]: Start accepts. Automaton has 9111 states and 41667 transitions. Word has length 23 [2020-10-21 23:17:50,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:50,765 INFO L481 AbstractCegarLoop]: Abstraction has 9111 states and 41667 transitions. [2020-10-21 23:17:50,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-21 23:17:50,765 INFO L276 IsEmpty]: Start isEmpty. Operand 9111 states and 41667 transitions. [2020-10-21 23:17:50,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 23:17:50,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:50,767 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:50,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:17:50,968 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 23:17:50,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:50,969 INFO L82 PathProgramCache]: Analyzing trace with hash 65683220, now seen corresponding path program 2 times [2020-10-21 23:17:50,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:50,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193463209] [2020-10-21 23:17:50,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:50,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:51,015 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 23:17:51,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193463209] [2020-10-21 23:17:51,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:51,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:17:51,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991392320] [2020-10-21 23:17:51,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:17:51,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:51,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:17:51,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:17:51,016 INFO L87 Difference]: Start difference. First operand 9111 states and 41667 transitions. Second operand 7 states. [2020-10-21 23:17:51,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:51,424 INFO L93 Difference]: Finished difference Result 20926 states and 85293 transitions. [2020-10-21 23:17:51,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:17:51,424 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-21 23:17:51,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:51,482 INFO L225 Difference]: With dead ends: 20926 [2020-10-21 23:17:51,482 INFO L226 Difference]: Without dead ends: 20889 [2020-10-21 23:17:51,482 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 23:17:51,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20889 states. [2020-10-21 23:17:51,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20889 to 9002. [2020-10-21 23:17:51,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9002 states. [2020-10-21 23:17:51,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9002 states to 9002 states and 41147 transitions. [2020-10-21 23:17:51,857 INFO L78 Accepts]: Start accepts. Automaton has 9002 states and 41147 transitions. Word has length 23 [2020-10-21 23:17:51,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:51,857 INFO L481 AbstractCegarLoop]: Abstraction has 9002 states and 41147 transitions. [2020-10-21 23:17:51,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:17:51,857 INFO L276 IsEmpty]: Start isEmpty. Operand 9002 states and 41147 transitions. [2020-10-21 23:17:51,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 23:17:51,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:51,860 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:51,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-21 23:17:51,860 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 23:17:51,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:51,861 INFO L82 PathProgramCache]: Analyzing trace with hash 65703370, now seen corresponding path program 2 times [2020-10-21 23:17:51,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:51,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463837652] [2020-10-21 23:17:51,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:51,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:51,916 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 23:17:51,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463837652] [2020-10-21 23:17:51,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:51,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:17:51,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478613402] [2020-10-21 23:17:51,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:17:51,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:51,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:17:51,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:17:51,918 INFO L87 Difference]: Start difference. First operand 9002 states and 41147 transitions. Second operand 7 states. [2020-10-21 23:17:52,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:52,311 INFO L93 Difference]: Finished difference Result 20671 states and 84034 transitions. [2020-10-21 23:17:52,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:17:52,312 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-21 23:17:52,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:52,363 INFO L225 Difference]: With dead ends: 20671 [2020-10-21 23:17:52,363 INFO L226 Difference]: Without dead ends: 20634 [2020-10-21 23:17:52,363 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 23:17:52,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20634 states. [2020-10-21 23:17:52,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20634 to 8910. [2020-10-21 23:17:52,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8910 states. [2020-10-21 23:17:52,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8910 states to 8910 states and 40716 transitions. [2020-10-21 23:17:52,867 INFO L78 Accepts]: Start accepts. Automaton has 8910 states and 40716 transitions. Word has length 23 [2020-10-21 23:17:52,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:52,867 INFO L481 AbstractCegarLoop]: Abstraction has 8910 states and 40716 transitions. [2020-10-21 23:17:52,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:17:52,868 INFO L276 IsEmpty]: Start isEmpty. Operand 8910 states and 40716 transitions. [2020-10-21 23:17:52,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 23:17:52,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:52,869 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:52,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-21 23:17:52,870 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 23:17:52,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:52,870 INFO L82 PathProgramCache]: Analyzing trace with hash 65695651, now seen corresponding path program 1 times [2020-10-21 23:17:52,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:52,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735893409] [2020-10-21 23:17:52,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:52,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:52,919 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 23:17:52,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735893409] [2020-10-21 23:17:52,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:52,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:17:52,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949367021] [2020-10-21 23:17:52,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:17:52,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:52,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:17:52,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:17:52,921 INFO L87 Difference]: Start difference. First operand 8910 states and 40716 transitions. Second operand 7 states. [2020-10-21 23:17:53,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:53,361 INFO L93 Difference]: Finished difference Result 21060 states and 85755 transitions. [2020-10-21 23:17:53,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:17:53,362 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-21 23:17:53,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:53,413 INFO L225 Difference]: With dead ends: 21060 [2020-10-21 23:17:53,413 INFO L226 Difference]: Without dead ends: 21023 [2020-10-21 23:17:53,414 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 23:17:53,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21023 states. [2020-10-21 23:17:53,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21023 to 9327. [2020-10-21 23:17:53,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9327 states. [2020-10-21 23:17:53,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9327 states to 9327 states and 42562 transitions. [2020-10-21 23:17:53,780 INFO L78 Accepts]: Start accepts. Automaton has 9327 states and 42562 transitions. Word has length 23 [2020-10-21 23:17:53,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:53,780 INFO L481 AbstractCegarLoop]: Abstraction has 9327 states and 42562 transitions. [2020-10-21 23:17:53,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:17:53,780 INFO L276 IsEmpty]: Start isEmpty. Operand 9327 states and 42562 transitions. [2020-10-21 23:17:53,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 23:17:53,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:53,782 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:17:53,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-21 23:17:53,783 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 23:17:53,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:53,783 INFO L82 PathProgramCache]: Analyzing trace with hash 61469731, now seen corresponding path program 2 times [2020-10-21 23:17:53,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:53,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345409704] [2020-10-21 23:17:53,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:53,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:53,833 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 23:17:53,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345409704] [2020-10-21 23:17:53,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:17:53,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:17:53,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143542065] [2020-10-21 23:17:53,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:17:53,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:53,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:17:53,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:17:53,836 INFO L87 Difference]: Start difference. First operand 9327 states and 42562 transitions. Second operand 7 states. [2020-10-21 23:17:54,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:54,248 INFO L93 Difference]: Finished difference Result 21207 states and 86283 transitions. [2020-10-21 23:17:54,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:17:54,249 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-21 23:17:54,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:54,312 INFO L225 Difference]: With dead ends: 21207 [2020-10-21 23:17:54,312 INFO L226 Difference]: Without dead ends: 21170 [2020-10-21 23:17:54,312 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 23:17:54,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21170 states. [2020-10-21 23:17:54,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21170 to 9426. [2020-10-21 23:17:54,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9426 states. [2020-10-21 23:17:54,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9426 states to 9426 states and 43057 transitions. [2020-10-21 23:17:54,711 INFO L78 Accepts]: Start accepts. Automaton has 9426 states and 43057 transitions. Word has length 23 [2020-10-21 23:17:54,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:54,712 INFO L481 AbstractCegarLoop]: Abstraction has 9426 states and 43057 transitions. [2020-10-21 23:17:54,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:17:54,712 INFO L276 IsEmpty]: Start isEmpty. Operand 9426 states and 43057 transitions. [2020-10-21 23:17:54,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:17:54,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:54,715 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 23:17:54,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-21 23:17:54,716 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 23:17:54,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:54,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1893562914, now seen corresponding path program 1 times [2020-10-21 23:17:54,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:54,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852779082] [2020-10-21 23:17:54,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:54,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:54,792 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 23:17:54,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852779082] [2020-10-21 23:17:54,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260435676] [2020-10-21 23:17:54,793 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 23:17:54,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:54,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:17:54,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:17:54,999 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 23:17:55,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:17:55,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 23:17:55,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142579454] [2020-10-21 23:17:55,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 23:17:55,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:55,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 23:17:55,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 23:17:55,001 INFO L87 Difference]: Start difference. First operand 9426 states and 43057 transitions. Second operand 16 states. [2020-10-21 23:17:55,521 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-10-21 23:17:56,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:56,161 INFO L93 Difference]: Finished difference Result 30145 states and 115754 transitions. [2020-10-21 23:17:56,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:17:56,161 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-21 23:17:56,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:56,242 INFO L225 Difference]: With dead ends: 30145 [2020-10-21 23:17:56,243 INFO L226 Difference]: Without dead ends: 30125 [2020-10-21 23:17:56,243 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 23:17:56,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30125 states. [2020-10-21 23:17:56,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30125 to 9346. [2020-10-21 23:17:56,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9346 states. [2020-10-21 23:17:56,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9346 states to 9346 states and 42602 transitions. [2020-10-21 23:17:56,717 INFO L78 Accepts]: Start accepts. Automaton has 9346 states and 42602 transitions. Word has length 25 [2020-10-21 23:17:56,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:56,717 INFO L481 AbstractCegarLoop]: Abstraction has 9346 states and 42602 transitions. [2020-10-21 23:17:56,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 23:17:56,718 INFO L276 IsEmpty]: Start isEmpty. Operand 9346 states and 42602 transitions. [2020-10-21 23:17:56,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:17:56,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:56,721 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 23:17:56,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-10-21 23:17:56,922 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 23:17:56,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:56,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1121885022, now seen corresponding path program 2 times [2020-10-21 23:17:56,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:56,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981723359] [2020-10-21 23:17:56,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:56,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:56,991 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 23:17:56,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981723359] [2020-10-21 23:17:56,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981212805] [2020-10-21 23:17:56,992 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 23:17:57,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 23:17:57,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:17:57,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:17:57,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:17:57,194 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 23:17:57,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:17:57,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 23:17:57,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663466446] [2020-10-21 23:17:57,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 23:17:57,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:57,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 23:17:57,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 23:17:57,196 INFO L87 Difference]: Start difference. First operand 9346 states and 42602 transitions. Second operand 16 states. [2020-10-21 23:17:58,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:17:58,309 INFO L93 Difference]: Finished difference Result 29656 states and 113703 transitions. [2020-10-21 23:17:58,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:17:58,310 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-21 23:17:58,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:17:58,390 INFO L225 Difference]: With dead ends: 29656 [2020-10-21 23:17:58,390 INFO L226 Difference]: Without dead ends: 29634 [2020-10-21 23:17:58,390 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 23:17:58,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29634 states. [2020-10-21 23:17:58,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29634 to 9343. [2020-10-21 23:17:58,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9343 states. [2020-10-21 23:17:59,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9343 states to 9343 states and 42547 transitions. [2020-10-21 23:17:59,138 INFO L78 Accepts]: Start accepts. Automaton has 9343 states and 42547 transitions. Word has length 25 [2020-10-21 23:17:59,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:17:59,139 INFO L481 AbstractCegarLoop]: Abstraction has 9343 states and 42547 transitions. [2020-10-21 23:17:59,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 23:17:59,139 INFO L276 IsEmpty]: Start isEmpty. Operand 9343 states and 42547 transitions. [2020-10-21 23:17:59,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:17:59,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:17:59,142 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 23:17:59,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-10-21 23:17:59,343 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 23:17:59,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:17:59,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1121872591, now seen corresponding path program 1 times [2020-10-21 23:17:59,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:17:59,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869236862] [2020-10-21 23:17:59,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:17:59,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:59,407 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 23:17:59,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869236862] [2020-10-21 23:17:59,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612988884] [2020-10-21 23:17:59,408 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 23:17:59,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:17:59,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:17:59,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:17:59,613 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 23:17:59,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:17:59,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 23:17:59,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733642024] [2020-10-21 23:17:59,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 23:17:59,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:17:59,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 23:17:59,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 23:17:59,615 INFO L87 Difference]: Start difference. First operand 9343 states and 42547 transitions. Second operand 16 states. [2020-10-21 23:18:00,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:18:00,686 INFO L93 Difference]: Finished difference Result 29316 states and 112409 transitions. [2020-10-21 23:18:00,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:18:00,687 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-21 23:18:00,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:18:00,775 INFO L225 Difference]: With dead ends: 29316 [2020-10-21 23:18:00,775 INFO L226 Difference]: Without dead ends: 29296 [2020-10-21 23:18:00,775 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 23:18:00,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29296 states. [2020-10-21 23:18:01,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29296 to 9260. [2020-10-21 23:18:01,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9260 states. [2020-10-21 23:18:01,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9260 states to 9260 states and 42114 transitions. [2020-10-21 23:18:01,208 INFO L78 Accepts]: Start accepts. Automaton has 9260 states and 42114 transitions. Word has length 25 [2020-10-21 23:18:01,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:18:01,209 INFO L481 AbstractCegarLoop]: Abstraction has 9260 states and 42114 transitions. [2020-10-21 23:18:01,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 23:18:01,209 INFO L276 IsEmpty]: Start isEmpty. Operand 9260 states and 42114 transitions. [2020-10-21 23:18:01,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:18:01,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:18:01,212 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 23:18:01,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-10-21 23:18:01,419 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 23:18:01,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:18:01,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1126098511, now seen corresponding path program 2 times [2020-10-21 23:18:01,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:18:01,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342509489] [2020-10-21 23:18:01,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:18:01,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:01,488 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 23:18:01,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342509489] [2020-10-21 23:18:01,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832807859] [2020-10-21 23:18:01,489 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 23:18:01,571 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 23:18:01,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:18:01,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:18:01,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:18:01,679 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 23:18:01,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:18:01,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 23:18:01,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879091364] [2020-10-21 23:18:01,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 23:18:01,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:18:01,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 23:18:01,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 23:18:01,680 INFO L87 Difference]: Start difference. First operand 9260 states and 42114 transitions. Second operand 16 states. [2020-10-21 23:18:02,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:18:02,833 INFO L93 Difference]: Finished difference Result 29093 states and 111462 transitions. [2020-10-21 23:18:02,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:18:02,834 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-21 23:18:02,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:18:02,903 INFO L225 Difference]: With dead ends: 29093 [2020-10-21 23:18:02,903 INFO L226 Difference]: Without dead ends: 29071 [2020-10-21 23:18:02,904 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 23:18:03,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29071 states. [2020-10-21 23:18:03,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29071 to 9176. [2020-10-21 23:18:03,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9176 states. [2020-10-21 23:18:03,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9176 states to 9176 states and 41695 transitions. [2020-10-21 23:18:03,538 INFO L78 Accepts]: Start accepts. Automaton has 9176 states and 41695 transitions. Word has length 25 [2020-10-21 23:18:03,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:18:03,539 INFO L481 AbstractCegarLoop]: Abstraction has 9176 states and 41695 transitions. [2020-10-21 23:18:03,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 23:18:03,539 INFO L276 IsEmpty]: Start isEmpty. Operand 9176 states and 41695 transitions. [2020-10-21 23:18:03,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:18:03,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:18:03,542 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 23:18:03,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:18:03,743 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 23:18:03,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:18:03,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1814954082, now seen corresponding path program 3 times [2020-10-21 23:18:03,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:18:03,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945695153] [2020-10-21 23:18:03,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:18:03,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:03,815 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 23:18:03,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945695153] [2020-10-21 23:18:03,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775156198] [2020-10-21 23:18:03,815 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 23:18:03,911 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-21 23:18:03,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:18:03,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:18:03,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:18:04,020 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 23:18:04,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:18:04,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 23:18:04,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528136125] [2020-10-21 23:18:04,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 23:18:04,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:18:04,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 23:18:04,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 23:18:04,022 INFO L87 Difference]: Start difference. First operand 9176 states and 41695 transitions. Second operand 16 states. [2020-10-21 23:18:04,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:18:04,979 INFO L93 Difference]: Finished difference Result 29030 states and 111196 transitions. [2020-10-21 23:18:04,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:18:04,979 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-21 23:18:04,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:18:05,052 INFO L225 Difference]: With dead ends: 29030 [2020-10-21 23:18:05,052 INFO L226 Difference]: Without dead ends: 29010 [2020-10-21 23:18:05,053 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 23:18:05,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29010 states. [2020-10-21 23:18:05,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29010 to 9004. [2020-10-21 23:18:05,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9004 states. [2020-10-21 23:18:05,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9004 states to 9004 states and 40905 transitions. [2020-10-21 23:18:05,512 INFO L78 Accepts]: Start accepts. Automaton has 9004 states and 40905 transitions. Word has length 25 [2020-10-21 23:18:05,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:18:05,512 INFO L481 AbstractCegarLoop]: Abstraction has 9004 states and 40905 transitions. [2020-10-21 23:18:05,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 23:18:05,512 INFO L276 IsEmpty]: Start isEmpty. Operand 9004 states and 40905 transitions. [2020-10-21 23:18:05,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:18:05,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:18:05,515 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 23:18:05,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-10-21 23:18:05,716 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 23:18:05,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:18:05,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1734595810, now seen corresponding path program 4 times [2020-10-21 23:18:05,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:18:05,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912658337] [2020-10-21 23:18:05,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:18:05,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:05,785 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 23:18:05,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912658337] [2020-10-21 23:18:05,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417550506] [2020-10-21 23:18:05,786 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 23:18:05,865 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-21 23:18:05,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:18:05,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:18:05,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:18:05,970 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 23:18:05,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:18:05,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 23:18:05,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829293323] [2020-10-21 23:18:05,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 23:18:05,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:18:05,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 23:18:05,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 23:18:05,972 INFO L87 Difference]: Start difference. First operand 9004 states and 40905 transitions. Second operand 16 states. [2020-10-21 23:18:06,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:18:06,939 INFO L93 Difference]: Finished difference Result 29275 states and 112216 transitions. [2020-10-21 23:18:06,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:18:06,940 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-21 23:18:06,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:18:07,011 INFO L225 Difference]: With dead ends: 29275 [2020-10-21 23:18:07,012 INFO L226 Difference]: Without dead ends: 29253 [2020-10-21 23:18:07,012 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 23:18:07,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29253 states. [2020-10-21 23:18:07,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29253 to 9001. [2020-10-21 23:18:07,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9001 states. [2020-10-21 23:18:07,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9001 states to 9001 states and 40850 transitions. [2020-10-21 23:18:07,664 INFO L78 Accepts]: Start accepts. Automaton has 9001 states and 40850 transitions. Word has length 25 [2020-10-21 23:18:07,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:18:07,665 INFO L481 AbstractCegarLoop]: Abstraction has 9001 states and 40850 transitions. [2020-10-21 23:18:07,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 23:18:07,665 INFO L276 IsEmpty]: Start isEmpty. Operand 9001 states and 40850 transitions. [2020-10-21 23:18:07,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:18:07,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:18:07,669 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 23:18:07,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:18:07,869 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 23:18:07,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:18:07,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1734588091, now seen corresponding path program 1 times [2020-10-21 23:18:07,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:18:07,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206647658] [2020-10-21 23:18:07,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:18:07,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:07,941 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 23:18:07,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206647658] [2020-10-21 23:18:07,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845645611] [2020-10-21 23:18:07,942 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 23:18:08,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:08,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:18:08,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:18:08,131 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 23:18:08,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:18:08,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 23:18:08,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864521453] [2020-10-21 23:18:08,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 23:18:08,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:18:08,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 23:18:08,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 23:18:08,133 INFO L87 Difference]: Start difference. First operand 9001 states and 40850 transitions. Second operand 16 states. [2020-10-21 23:18:09,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:18:09,260 INFO L93 Difference]: Finished difference Result 29105 states and 111801 transitions. [2020-10-21 23:18:09,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:18:09,261 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-21 23:18:09,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:18:09,343 INFO L225 Difference]: With dead ends: 29105 [2020-10-21 23:18:09,343 INFO L226 Difference]: Without dead ends: 29085 [2020-10-21 23:18:09,344 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 23:18:09,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29085 states. [2020-10-21 23:18:09,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29085 to 8951. [2020-10-21 23:18:09,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8951 states. [2020-10-21 23:18:09,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8951 states to 8951 states and 40581 transitions. [2020-10-21 23:18:09,784 INFO L78 Accepts]: Start accepts. Automaton has 8951 states and 40581 transitions. Word has length 25 [2020-10-21 23:18:09,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:18:09,784 INFO L481 AbstractCegarLoop]: Abstraction has 8951 states and 40581 transitions. [2020-10-21 23:18:09,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 23:18:09,784 INFO L276 IsEmpty]: Start isEmpty. Operand 8951 states and 40581 transitions. [2020-10-21 23:18:09,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:18:09,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:18:09,788 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 23:18:09,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:18:09,988 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 23:18:09,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:18:09,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1730362171, now seen corresponding path program 2 times [2020-10-21 23:18:09,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:18:09,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728551461] [2020-10-21 23:18:09,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:18:09,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:10,056 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 23:18:10,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728551461] [2020-10-21 23:18:10,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331462641] [2020-10-21 23:18:10,057 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 23:18:10,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 23:18:10,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:18:10,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:18:10,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:18:10,238 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 23:18:10,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:18:10,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 23:18:10,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143950579] [2020-10-21 23:18:10,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 23:18:10,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:18:10,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 23:18:10,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 23:18:10,240 INFO L87 Difference]: Start difference. First operand 8951 states and 40581 transitions. Second operand 16 states. [2020-10-21 23:18:11,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:18:11,423 INFO L93 Difference]: Finished difference Result 28806 states and 110558 transitions. [2020-10-21 23:18:11,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:18:11,423 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-21 23:18:11,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:18:11,492 INFO L225 Difference]: With dead ends: 28806 [2020-10-21 23:18:11,492 INFO L226 Difference]: Without dead ends: 28779 [2020-10-21 23:18:11,492 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 23:18:11,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28779 states. [2020-10-21 23:18:12,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28779 to 8841. [2020-10-21 23:18:12,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8841 states. [2020-10-21 23:18:12,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8841 states to 8841 states and 40058 transitions. [2020-10-21 23:18:12,086 INFO L78 Accepts]: Start accepts. Automaton has 8841 states and 40058 transitions. Word has length 25 [2020-10-21 23:18:12,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:18:12,087 INFO L481 AbstractCegarLoop]: Abstraction has 8841 states and 40058 transitions. [2020-10-21 23:18:12,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 23:18:12,087 INFO L276 IsEmpty]: Start isEmpty. Operand 8841 states and 40058 transitions. [2020-10-21 23:18:12,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:18:12,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:18:12,091 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 23:18:12,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2020-10-21 23:18:12,292 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 23:18:12,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:18:12,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1302913182, now seen corresponding path program 5 times [2020-10-21 23:18:12,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:18:12,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749244302] [2020-10-21 23:18:12,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:18:12,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:12,354 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 23:18:12,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749244302] [2020-10-21 23:18:12,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:18:12,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:18:12,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641261685] [2020-10-21 23:18:12,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:18:12,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:18:12,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:18:12,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:18:12,356 INFO L87 Difference]: Start difference. First operand 8841 states and 40058 transitions. Second operand 9 states. [2020-10-21 23:18:13,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:18:13,337 INFO L93 Difference]: Finished difference Result 28597 states and 109522 transitions. [2020-10-21 23:18:13,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:18:13,338 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 23:18:13,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:18:13,408 INFO L225 Difference]: With dead ends: 28597 [2020-10-21 23:18:13,408 INFO L226 Difference]: Without dead ends: 28577 [2020-10-21 23:18:13,408 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 23:18:13,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28577 states. [2020-10-21 23:18:13,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28577 to 8616. [2020-10-21 23:18:13,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8616 states. [2020-10-21 23:18:13,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8616 states to 8616 states and 39029 transitions. [2020-10-21 23:18:13,836 INFO L78 Accepts]: Start accepts. Automaton has 8616 states and 39029 transitions. Word has length 25 [2020-10-21 23:18:13,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:18:13,837 INFO L481 AbstractCegarLoop]: Abstraction has 8616 states and 39029 transitions. [2020-10-21 23:18:13,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:18:13,837 INFO L276 IsEmpty]: Start isEmpty. Operand 8616 states and 39029 transitions. [2020-10-21 23:18:13,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:18:13,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:18:13,840 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 23:18:13,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-21 23:18:13,840 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 23:18:13,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:18:13,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1302920901, now seen corresponding path program 3 times [2020-10-21 23:18:13,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:18:13,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806481999] [2020-10-21 23:18:13,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:18:13,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:13,914 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 23:18:13,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806481999] [2020-10-21 23:18:13,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:18:13,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:18:13,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486917007] [2020-10-21 23:18:13,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:18:13,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:18:13,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:18:13,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:18:13,917 INFO L87 Difference]: Start difference. First operand 8616 states and 39029 transitions. Second operand 9 states. [2020-10-21 23:18:14,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:18:14,873 INFO L93 Difference]: Finished difference Result 28374 states and 108800 transitions. [2020-10-21 23:18:14,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:18:14,873 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 23:18:14,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:18:14,942 INFO L225 Difference]: With dead ends: 28374 [2020-10-21 23:18:14,942 INFO L226 Difference]: Without dead ends: 28354 [2020-10-21 23:18:14,943 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 23:18:15,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28354 states. [2020-10-21 23:18:15,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28354 to 8466. [2020-10-21 23:18:15,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8466 states. [2020-10-21 23:18:15,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8466 states to 8466 states and 38348 transitions. [2020-10-21 23:18:15,356 INFO L78 Accepts]: Start accepts. Automaton has 8466 states and 38348 transitions. Word has length 25 [2020-10-21 23:18:15,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:18:15,356 INFO L481 AbstractCegarLoop]: Abstraction has 8466 states and 38348 transitions. [2020-10-21 23:18:15,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:18:15,356 INFO L276 IsEmpty]: Start isEmpty. Operand 8466 states and 38348 transitions. [2020-10-21 23:18:15,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:18:15,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:18:15,359 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 23:18:15,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-21 23:18:15,360 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 23:18:15,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:18:15,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1283569182, now seen corresponding path program 6 times [2020-10-21 23:18:15,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:18:15,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928899227] [2020-10-21 23:18:15,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:18:15,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:15,435 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 23:18:15,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928899227] [2020-10-21 23:18:15,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:18:15,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:18:15,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381235912] [2020-10-21 23:18:15,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:18:15,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:18:15,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:18:15,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:18:15,437 INFO L87 Difference]: Start difference. First operand 8466 states and 38348 transitions. Second operand 9 states. [2020-10-21 23:18:17,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:18:17,002 INFO L93 Difference]: Finished difference Result 27919 states and 106695 transitions. [2020-10-21 23:18:17,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:18:17,003 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 23:18:17,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:18:17,121 INFO L225 Difference]: With dead ends: 27919 [2020-10-21 23:18:17,121 INFO L226 Difference]: Without dead ends: 27892 [2020-10-21 23:18:17,122 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 23:18:17,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27892 states. [2020-10-21 23:18:17,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27892 to 8151. [2020-10-21 23:18:17,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8151 states. [2020-10-21 23:18:17,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8151 states to 8151 states and 36997 transitions. [2020-10-21 23:18:17,785 INFO L78 Accepts]: Start accepts. Automaton has 8151 states and 36997 transitions. Word has length 25 [2020-10-21 23:18:17,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:18:17,787 INFO L481 AbstractCegarLoop]: Abstraction has 8151 states and 36997 transitions. [2020-10-21 23:18:17,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:18:17,787 INFO L276 IsEmpty]: Start isEmpty. Operand 8151 states and 36997 transitions. [2020-10-21 23:18:17,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:18:17,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:18:17,793 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 23:18:17,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-21 23:18:17,793 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 23:18:17,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:18:17,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1283556751, now seen corresponding path program 3 times [2020-10-21 23:18:17,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:18:17,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86701562] [2020-10-21 23:18:17,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:18:17,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:17,873 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 23:18:17,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86701562] [2020-10-21 23:18:17,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:18:17,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:18:17,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636351387] [2020-10-21 23:18:17,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:18:17,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:18:17,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:18:17,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:18:17,875 INFO L87 Difference]: Start difference. First operand 8151 states and 36997 transitions. Second operand 9 states. [2020-10-21 23:18:18,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:18:18,896 INFO L93 Difference]: Finished difference Result 27732 states and 106194 transitions. [2020-10-21 23:18:18,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:18:18,897 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 23:18:18,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:18:18,961 INFO L225 Difference]: With dead ends: 27732 [2020-10-21 23:18:18,962 INFO L226 Difference]: Without dead ends: 27712 [2020-10-21 23:18:18,962 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 23:18:19,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27712 states. [2020-10-21 23:18:19,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27712 to 8053. [2020-10-21 23:18:19,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8053 states. [2020-10-21 23:18:19,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8053 states to 8053 states and 36561 transitions. [2020-10-21 23:18:19,357 INFO L78 Accepts]: Start accepts. Automaton has 8053 states and 36561 transitions. Word has length 25 [2020-10-21 23:18:19,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:18:19,357 INFO L481 AbstractCegarLoop]: Abstraction has 8053 states and 36561 transitions. [2020-10-21 23:18:19,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:18:19,357 INFO L276 IsEmpty]: Start isEmpty. Operand 8053 states and 36561 transitions. [2020-10-21 23:18:19,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:18:19,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:18:19,360 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 23:18:19,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2020-10-21 23:18:19,360 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 23:18:19,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:18:19,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1290987141, now seen corresponding path program 4 times [2020-10-21 23:18:19,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:18:19,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580788185] [2020-10-21 23:18:19,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:18:19,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:19,455 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 23:18:19,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580788185] [2020-10-21 23:18:19,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:18:19,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:18:19,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743726289] [2020-10-21 23:18:19,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:18:19,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:18:19,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:18:19,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:18:19,457 INFO L87 Difference]: Start difference. First operand 8053 states and 36561 transitions. Second operand 9 states. [2020-10-21 23:18:20,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:18:20,683 INFO L93 Difference]: Finished difference Result 27752 states and 106300 transitions. [2020-10-21 23:18:20,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:18:20,684 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 23:18:20,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:18:20,796 INFO L225 Difference]: With dead ends: 27752 [2020-10-21 23:18:20,797 INFO L226 Difference]: Without dead ends: 27725 [2020-10-21 23:18:20,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 23:18:21,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27725 states. [2020-10-21 23:18:21,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27725 to 8053. [2020-10-21 23:18:21,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8053 states. [2020-10-21 23:18:21,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8053 states to 8053 states and 36529 transitions. [2020-10-21 23:18:21,446 INFO L78 Accepts]: Start accepts. Automaton has 8053 states and 36529 transitions. Word has length 25 [2020-10-21 23:18:21,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:18:21,447 INFO L481 AbstractCegarLoop]: Abstraction has 8053 states and 36529 transitions. [2020-10-21 23:18:21,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:18:21,447 INFO L276 IsEmpty]: Start isEmpty. Operand 8053 states and 36529 transitions. [2020-10-21 23:18:21,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:18:21,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:18:21,450 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 23:18:21,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-21 23:18:21,450 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 23:18:21,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:18:21,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1290966991, now seen corresponding path program 4 times [2020-10-21 23:18:21,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:18:21,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842614592] [2020-10-21 23:18:21,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:18:21,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:21,521 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 23:18:21,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842614592] [2020-10-21 23:18:21,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:18:21,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:18:21,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583652598] [2020-10-21 23:18:21,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:18:21,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:18:21,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:18:21,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:18:21,522 INFO L87 Difference]: Start difference. First operand 8053 states and 36529 transitions. Second operand 9 states. [2020-10-21 23:18:22,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:18:22,527 INFO L93 Difference]: Finished difference Result 27429 states and 105043 transitions. [2020-10-21 23:18:22,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:18:22,528 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 23:18:22,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:18:22,588 INFO L225 Difference]: With dead ends: 27429 [2020-10-21 23:18:22,588 INFO L226 Difference]: Without dead ends: 27402 [2020-10-21 23:18:22,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 23:18:22,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27402 states. [2020-10-21 23:18:22,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27402 to 7996. [2020-10-21 23:18:22,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7996 states. [2020-10-21 23:18:22,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7996 states to 7996 states and 36246 transitions. [2020-10-21 23:18:22,970 INFO L78 Accepts]: Start accepts. Automaton has 7996 states and 36246 transitions. Word has length 25 [2020-10-21 23:18:22,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:18:22,970 INFO L481 AbstractCegarLoop]: Abstraction has 7996 states and 36246 transitions. [2020-10-21 23:18:22,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:18:22,970 INFO L276 IsEmpty]: Start isEmpty. Operand 7996 states and 36246 transitions. [2020-10-21 23:18:22,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:18:22,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:18:22,973 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:18:22,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-21 23:18:22,973 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 23:18:22,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:18:22,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1806156920, now seen corresponding path program 1 times [2020-10-21 23:18:22,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:18:22,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707645941] [2020-10-21 23:18:22,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:18:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:23,014 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 23:18:23,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707645941] [2020-10-21 23:18:23,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:18:23,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:18:23,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386951862] [2020-10-21 23:18:23,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:18:23,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:18:23,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:18:23,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:18:23,016 INFO L87 Difference]: Start difference. First operand 7996 states and 36246 transitions. Second operand 5 states. [2020-10-21 23:18:23,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:18:23,186 INFO L93 Difference]: Finished difference Result 13000 states and 56551 transitions. [2020-10-21 23:18:23,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:18:23,187 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-21 23:18:23,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:18:23,218 INFO L225 Difference]: With dead ends: 13000 [2020-10-21 23:18:23,218 INFO L226 Difference]: Without dead ends: 12968 [2020-10-21 23:18:23,218 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 23:18:23,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12968 states. [2020-10-21 23:18:23,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12968 to 9425. [2020-10-21 23:18:23,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9425 states. [2020-10-21 23:18:23,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9425 states to 9425 states and 42312 transitions. [2020-10-21 23:18:23,486 INFO L78 Accepts]: Start accepts. Automaton has 9425 states and 42312 transitions. Word has length 25 [2020-10-21 23:18:23,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:18:23,487 INFO L481 AbstractCegarLoop]: Abstraction has 9425 states and 42312 transitions. [2020-10-21 23:18:23,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:18:23,487 INFO L276 IsEmpty]: Start isEmpty. Operand 9425 states and 42312 transitions. [2020-10-21 23:18:23,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:18:23,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:18:23,490 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 23:18:23,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-21 23:18:23,490 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 23:18:23,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:18:23,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1073288645, now seen corresponding path program 5 times [2020-10-21 23:18:23,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:18:23,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279437544] [2020-10-21 23:18:23,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:18:23,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:23,567 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 23:18:23,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279437544] [2020-10-21 23:18:23,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:18:23,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:18:23,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950110421] [2020-10-21 23:18:23,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:18:23,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:18:23,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:18:23,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:18:23,569 INFO L87 Difference]: Start difference. First operand 9425 states and 42312 transitions. Second operand 9 states. [2020-10-21 23:18:24,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:18:24,514 INFO L93 Difference]: Finished difference Result 30960 states and 119709 transitions. [2020-10-21 23:18:24,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:18:24,514 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 23:18:24,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:18:24,595 INFO L225 Difference]: With dead ends: 30960 [2020-10-21 23:18:24,595 INFO L226 Difference]: Without dead ends: 30934 [2020-10-21 23:18:24,595 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 23:18:24,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30934 states. [2020-10-21 23:18:25,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30934 to 9270. [2020-10-21 23:18:25,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9270 states. [2020-10-21 23:18:25,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9270 states to 9270 states and 41573 transitions. [2020-10-21 23:18:25,061 INFO L78 Accepts]: Start accepts. Automaton has 9270 states and 41573 transitions. Word has length 25 [2020-10-21 23:18:25,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:18:25,061 INFO L481 AbstractCegarLoop]: Abstraction has 9270 states and 41573 transitions. [2020-10-21 23:18:25,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:18:25,061 INFO L276 IsEmpty]: Start isEmpty. Operand 9270 states and 41573 transitions. [2020-10-21 23:18:25,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:18:25,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:18:25,064 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 23:18:25,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-10-21 23:18:25,064 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 23:18:25,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:18:25,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1057128965, now seen corresponding path program 6 times [2020-10-21 23:18:25,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:18:25,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783365560] [2020-10-21 23:18:25,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:18:25,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:25,123 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 23:18:25,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783365560] [2020-10-21 23:18:25,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:18:25,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:18:25,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078018931] [2020-10-21 23:18:25,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:18:25,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:18:25,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:18:25,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:18:25,125 INFO L87 Difference]: Start difference. First operand 9270 states and 41573 transitions. Second operand 9 states. [2020-10-21 23:18:26,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:18:26,302 INFO L93 Difference]: Finished difference Result 30557 states and 118001 transitions. [2020-10-21 23:18:26,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:18:26,303 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 23:18:26,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:18:26,377 INFO L225 Difference]: With dead ends: 30557 [2020-10-21 23:18:26,377 INFO L226 Difference]: Without dead ends: 30524 [2020-10-21 23:18:26,377 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 23:18:26,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30524 states. [2020-10-21 23:18:26,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30524 to 9003. [2020-10-21 23:18:26,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9003 states. [2020-10-21 23:18:26,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9003 states to 9003 states and 40426 transitions. [2020-10-21 23:18:26,831 INFO L78 Accepts]: Start accepts. Automaton has 9003 states and 40426 transitions. Word has length 25 [2020-10-21 23:18:26,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:18:26,831 INFO L481 AbstractCegarLoop]: Abstraction has 9003 states and 40426 transitions. [2020-10-21 23:18:26,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:18:26,831 INFO L276 IsEmpty]: Start isEmpty. Operand 9003 states and 40426 transitions. [2020-10-21 23:18:26,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:18:26,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:18:26,834 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 23:18:26,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-10-21 23:18:26,834 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 23:18:26,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:18:26,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1057108815, now seen corresponding path program 5 times [2020-10-21 23:18:26,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:18:26,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011231086] [2020-10-21 23:18:26,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:18:26,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:26,912 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 23:18:26,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011231086] [2020-10-21 23:18:26,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:18:26,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:18:26,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520811950] [2020-10-21 23:18:26,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:18:26,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:18:26,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:18:26,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:18:26,914 INFO L87 Difference]: Start difference. First operand 9003 states and 40426 transitions. Second operand 9 states. [2020-10-21 23:18:27,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:18:27,915 INFO L93 Difference]: Finished difference Result 30154 states and 116397 transitions. [2020-10-21 23:18:27,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:18:27,915 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 23:18:27,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:18:27,994 INFO L225 Difference]: With dead ends: 30154 [2020-10-21 23:18:27,994 INFO L226 Difference]: Without dead ends: 30128 [2020-10-21 23:18:27,995 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 23:18:28,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30128 states. [2020-10-21 23:18:28,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30128 to 8901. [2020-10-21 23:18:28,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8901 states. [2020-10-21 23:18:28,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8901 states to 8901 states and 39944 transitions. [2020-10-21 23:18:28,432 INFO L78 Accepts]: Start accepts. Automaton has 8901 states and 39944 transitions. Word has length 25 [2020-10-21 23:18:28,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:18:28,432 INFO L481 AbstractCegarLoop]: Abstraction has 8901 states and 39944 transitions. [2020-10-21 23:18:28,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:18:28,432 INFO L276 IsEmpty]: Start isEmpty. Operand 8901 states and 39944 transitions. [2020-10-21 23:18:28,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:18:28,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:18:28,435 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 23:18:28,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-10-21 23:18:28,435 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 23:18:28,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:18:28,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1053924495, now seen corresponding path program 6 times [2020-10-21 23:18:28,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:18:28,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481522282] [2020-10-21 23:18:28,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:18:28,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:28,503 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 23:18:28,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481522282] [2020-10-21 23:18:28,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:18:28,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:18:28,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085384718] [2020-10-21 23:18:28,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:18:28,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:18:28,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:18:28,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:18:28,505 INFO L87 Difference]: Start difference. First operand 8901 states and 39944 transitions. Second operand 9 states. [2020-10-21 23:18:29,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:18:29,552 INFO L93 Difference]: Finished difference Result 29876 states and 115200 transitions. [2020-10-21 23:18:29,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:18:29,553 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 23:18:29,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:18:29,638 INFO L225 Difference]: With dead ends: 29876 [2020-10-21 23:18:29,638 INFO L226 Difference]: Without dead ends: 29843 [2020-10-21 23:18:29,638 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 23:18:29,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29843 states. [2020-10-21 23:18:30,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29843 to 8560. [2020-10-21 23:18:30,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8560 states. [2020-10-21 23:18:30,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8560 states to 8560 states and 38495 transitions. [2020-10-21 23:18:30,089 INFO L78 Accepts]: Start accepts. Automaton has 8560 states and 38495 transitions. Word has length 25 [2020-10-21 23:18:30,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:18:30,089 INFO L481 AbstractCegarLoop]: Abstraction has 8560 states and 38495 transitions. [2020-10-21 23:18:30,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:18:30,089 INFO L276 IsEmpty]: Start isEmpty. Operand 8560 states and 38495 transitions. [2020-10-21 23:18:30,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-21 23:18:30,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:18:30,093 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:18:30,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-10-21 23:18:30,093 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 23:18:30,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:18:30,093 INFO L82 PathProgramCache]: Analyzing trace with hash 150081278, now seen corresponding path program 1 times [2020-10-21 23:18:30,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:18:30,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146720028] [2020-10-21 23:18:30,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:18:30,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 23:18:30,101 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 23:18:30,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 23:18:30,107 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 23:18:30,115 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-21 23:18:30,115 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-21 23:18:30,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-10-21 23:18:30,116 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-21 23:18:30,116 WARN L371 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-21 23:18:30,117 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-10-21 23:18:30,135 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,135 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,136 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,136 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,136 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,136 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,136 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,137 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,137 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,137 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,137 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,137 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,137 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,137 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,137 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,138 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,138 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,138 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,138 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,138 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,138 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,138 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,138 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,139 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,139 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,139 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,139 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,139 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,139 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,139 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,139 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,140 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,140 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,140 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,140 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,140 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,140 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,140 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,140 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,141 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,141 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,141 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,141 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,141 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,141 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,141 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,141 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,142 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,142 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,142 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,142 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,142 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,142 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,142 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,142 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,143 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,143 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,143 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,143 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,143 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,143 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,143 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,143 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,144 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,144 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,144 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,144 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,144 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,144 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,144 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,144 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,145 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,145 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,145 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,145 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,145 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,145 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,145 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,146 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,146 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,146 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,146 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,146 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,146 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,146 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,146 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,147 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,147 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,147 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,147 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,147 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,147 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,147 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,148 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,148 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,148 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,148 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,148 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,148 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,148 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,149 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,149 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,149 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,149 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,149 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,149 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,149 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,149 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,150 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,150 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,150 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,150 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,150 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,150 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,150 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,150 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,151 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,151 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,151 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,151 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,151 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,151 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,151 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,151 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,152 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,152 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,152 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,152 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,152 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,153 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,153 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,162 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,163 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,163 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,163 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,163 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,167 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,168 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,168 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,168 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,168 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,172 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,173 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,173 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,173 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,173 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,174 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,174 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,174 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,174 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,175 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,176 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,176 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,176 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,176 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,176 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,177 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,177 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,178 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,178 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,178 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,178 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,178 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,178 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,179 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,179 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,179 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,179 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,180 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,180 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,180 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,180 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,181 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,181 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,181 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,181 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,181 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,181 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,181 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,181 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,182 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,182 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,182 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,182 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,183 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,183 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,183 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,183 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,185 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,185 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,185 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,185 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,185 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,186 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,186 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,186 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,187 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,187 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,187 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,187 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,188 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,188 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,188 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,188 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:18:30,189 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-21 23:18:30,189 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-10-21 23:18:30,189 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 23:18:30,189 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 23:18:30,189 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-21 23:18:30,189 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 23:18:30,189 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 23:18:30,189 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 23:18:30,189 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 23:18:30,189 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 23:18:30,191 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-21 23:18:30,191 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 184 places, 172 transitions, 464 flow [2020-10-21 23:18:30,191 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 184 places, 172 transitions, 464 flow [2020-10-21 23:18:30,191 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 184 places, 172 transitions, 464 flow [2020-10-21 23:18:30,210 INFO L129 PetriNetUnfolder]: 10/182 cut-off events. [2020-10-21 23:18:30,210 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-10-21 23:18:30,212 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 23:18:30,219 INFO L116 LiptonReduction]: Number of co-enabled transitions 3372 [2020-10-21 23:18:32,419 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2020-10-21 23:18:33,110 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 63 [2020-10-21 23:18:33,515 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 96 [2020-10-21 23:18:33,657 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-21 23:18:33,683 INFO L131 LiptonReduction]: Checked pairs total: 5911 [2020-10-21 23:18:33,683 INFO L133 LiptonReduction]: Total number of compositions: 191 [2020-10-21 23:18:33,683 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 45 transitions, 210 flow [2020-10-21 23:18:35,265 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 18584 states. [2020-10-21 23:18:35,265 INFO L276 IsEmpty]: Start isEmpty. Operand 18584 states. [2020-10-21 23:18:35,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-21 23:18:35,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:18:35,265 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-21 23:18:35,266 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 23:18:35,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:18:35,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1689038, now seen corresponding path program 1 times [2020-10-21 23:18:35,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:18:35,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612810670] [2020-10-21 23:18:35,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:18:35,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:35,277 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 23:18:35,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612810670] [2020-10-21 23:18:35,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:18:35,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-21 23:18:35,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687556315] [2020-10-21 23:18:35,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 23:18:35,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:18:35,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 23:18:35,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:18:35,279 INFO L87 Difference]: Start difference. First operand 18584 states. Second operand 3 states. [2020-10-21 23:18:35,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:18:35,452 INFO L93 Difference]: Finished difference Result 17885 states and 92755 transitions. [2020-10-21 23:18:35,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 23:18:35,452 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-21 23:18:35,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:18:35,505 INFO L225 Difference]: With dead ends: 17885 [2020-10-21 23:18:35,505 INFO L226 Difference]: Without dead ends: 16791 [2020-10-21 23:18:35,505 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 23:18:35,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16791 states. [2020-10-21 23:18:36,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16791 to 16791. [2020-10-21 23:18:36,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16791 states. [2020-10-21 23:18:36,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16791 states to 16791 states and 86558 transitions. [2020-10-21 23:18:36,604 INFO L78 Accepts]: Start accepts. Automaton has 16791 states and 86558 transitions. Word has length 3 [2020-10-21 23:18:36,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:18:36,604 INFO L481 AbstractCegarLoop]: Abstraction has 16791 states and 86558 transitions. [2020-10-21 23:18:36,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 23:18:36,604 INFO L276 IsEmpty]: Start isEmpty. Operand 16791 states and 86558 transitions. [2020-10-21 23:18:36,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 23:18:36,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:18:36,604 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:18:36,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2020-10-21 23:18:36,605 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 23:18:36,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:18:36,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1195163712, now seen corresponding path program 1 times [2020-10-21 23:18:36,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:18:36,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588181584] [2020-10-21 23:18:36,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:18:36,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:36,638 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 23:18:36,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588181584] [2020-10-21 23:18:36,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:18:36,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:18:36,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983126469] [2020-10-21 23:18:36,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:18:36,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:18:36,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:18:36,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:18:36,640 INFO L87 Difference]: Start difference. First operand 16791 states and 86558 transitions. Second operand 5 states. [2020-10-21 23:18:36,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:18:36,924 INFO L93 Difference]: Finished difference Result 30985 states and 150574 transitions. [2020-10-21 23:18:36,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:18:36,925 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-21 23:18:36,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:18:37,019 INFO L225 Difference]: With dead ends: 30985 [2020-10-21 23:18:37,019 INFO L226 Difference]: Without dead ends: 30977 [2020-10-21 23:18:37,019 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 23:18:37,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30977 states. [2020-10-21 23:18:37,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30977 to 19868. [2020-10-21 23:18:37,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19868 states. [2020-10-21 23:18:38,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19868 states to 19868 states and 103363 transitions. [2020-10-21 23:18:38,029 INFO L78 Accepts]: Start accepts. Automaton has 19868 states and 103363 transitions. Word has length 9 [2020-10-21 23:18:38,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:18:38,029 INFO L481 AbstractCegarLoop]: Abstraction has 19868 states and 103363 transitions. [2020-10-21 23:18:38,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:18:38,029 INFO L276 IsEmpty]: Start isEmpty. Operand 19868 states and 103363 transitions. [2020-10-21 23:18:38,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 23:18:38,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:18:38,030 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:18:38,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2020-10-21 23:18:38,030 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 23:18:38,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:18:38,030 INFO L82 PathProgramCache]: Analyzing trace with hash 749431237, now seen corresponding path program 1 times [2020-10-21 23:18:38,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:18:38,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306452286] [2020-10-21 23:18:38,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:18:38,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:38,067 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 23:18:38,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306452286] [2020-10-21 23:18:38,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:18:38,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:18:38,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713551991] [2020-10-21 23:18:38,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:18:38,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:18:38,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:18:38,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:18:38,069 INFO L87 Difference]: Start difference. First operand 19868 states and 103363 transitions. Second operand 5 states. [2020-10-21 23:18:38,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:18:38,365 INFO L93 Difference]: Finished difference Result 36296 states and 178836 transitions. [2020-10-21 23:18:38,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:18:38,366 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-21 23:18:38,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:18:38,479 INFO L225 Difference]: With dead ends: 36296 [2020-10-21 23:18:38,479 INFO L226 Difference]: Without dead ends: 36280 [2020-10-21 23:18:38,479 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 23:18:39,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36280 states. [2020-10-21 23:18:41,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36280 to 23806. [2020-10-21 23:18:41,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23806 states. [2020-10-21 23:18:41,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23806 states to 23806 states and 125455 transitions. [2020-10-21 23:18:41,598 INFO L78 Accepts]: Start accepts. Automaton has 23806 states and 125455 transitions. Word has length 13 [2020-10-21 23:18:41,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:18:41,598 INFO L481 AbstractCegarLoop]: Abstraction has 23806 states and 125455 transitions. [2020-10-21 23:18:41,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:18:41,598 INFO L276 IsEmpty]: Start isEmpty. Operand 23806 states and 125455 transitions. [2020-10-21 23:18:41,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-21 23:18:41,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:18:41,599 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:18:41,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2020-10-21 23:18:41,599 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 23:18:41,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:18:41,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1975297452, now seen corresponding path program 1 times [2020-10-21 23:18:41,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:18:41,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770128487] [2020-10-21 23:18:41,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:18:41,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:41,652 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 23:18:41,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770128487] [2020-10-21 23:18:41,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145895723] [2020-10-21 23:18:41,652 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 23:18:41,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:41,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-21 23:18:41,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:18:41,813 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 23:18:41,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:18:41,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-21 23:18:41,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612886528] [2020-10-21 23:18:41,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-21 23:18:41,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:18:41,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-21 23:18:41,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-21 23:18:41,815 INFO L87 Difference]: Start difference. First operand 23806 states and 125455 transitions. Second operand 12 states. [2020-10-21 23:18:42,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:18:42,495 INFO L93 Difference]: Finished difference Result 56720 states and 262685 transitions. [2020-10-21 23:18:42,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:18:42,496 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-21 23:18:42,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:18:42,674 INFO L225 Difference]: With dead ends: 56720 [2020-10-21 23:18:42,675 INFO L226 Difference]: Without dead ends: 56704 [2020-10-21 23:18:42,675 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 23:18:43,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56704 states. [2020-10-21 23:18:44,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56704 to 23629. [2020-10-21 23:18:44,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23629 states. [2020-10-21 23:18:44,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23629 states to 23629 states and 124418 transitions. [2020-10-21 23:18:44,164 INFO L78 Accepts]: Start accepts. Automaton has 23629 states and 124418 transitions. Word has length 15 [2020-10-21 23:18:44,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:18:44,164 INFO L481 AbstractCegarLoop]: Abstraction has 23629 states and 124418 transitions. [2020-10-21 23:18:44,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-21 23:18:44,164 INFO L276 IsEmpty]: Start isEmpty. Operand 23629 states and 124418 transitions. [2020-10-21 23:18:44,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-21 23:18:44,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:18:44,165 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:18:44,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2020-10-21 23:18:44,366 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 23:18:44,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:18:44,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1351073514, now seen corresponding path program 2 times [2020-10-21 23:18:44,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:18:44,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406237063] [2020-10-21 23:18:44,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:18:44,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:44,824 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2020-10-21 23:18:44,855 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 23:18:44,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406237063] [2020-10-21 23:18:44,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:18:44,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:18:44,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525567053] [2020-10-21 23:18:44,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:18:44,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:18:44,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:18:44,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:18:44,857 INFO L87 Difference]: Start difference. First operand 23629 states and 124418 transitions. Second operand 7 states. [2020-10-21 23:18:45,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:18:45,498 INFO L93 Difference]: Finished difference Result 58078 states and 269185 transitions. [2020-10-21 23:18:45,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:18:45,499 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-21 23:18:45,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:18:45,682 INFO L225 Difference]: With dead ends: 58078 [2020-10-21 23:18:45,683 INFO L226 Difference]: Without dead ends: 58061 [2020-10-21 23:18:45,683 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-21 23:18:46,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58061 states. [2020-10-21 23:18:47,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58061 to 23109. [2020-10-21 23:18:47,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23109 states. [2020-10-21 23:18:47,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23109 states to 23109 states and 121651 transitions. [2020-10-21 23:18:47,214 INFO L78 Accepts]: Start accepts. Automaton has 23109 states and 121651 transitions. Word has length 15 [2020-10-21 23:18:47,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:18:47,214 INFO L481 AbstractCegarLoop]: Abstraction has 23109 states and 121651 transitions. [2020-10-21 23:18:47,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:18:47,214 INFO L276 IsEmpty]: Start isEmpty. Operand 23109 states and 121651 transitions. [2020-10-21 23:18:47,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-21 23:18:47,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:18:47,215 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:18:47,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2020-10-21 23:18:47,215 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 23:18:47,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:18:47,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1256878032, now seen corresponding path program 1 times [2020-10-21 23:18:47,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:18:47,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810195021] [2020-10-21 23:18:47,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:18:47,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:47,251 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 23:18:47,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810195021] [2020-10-21 23:18:47,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:18:47,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:18:47,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015540810] [2020-10-21 23:18:47,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:18:47,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:18:47,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:18:47,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:18:47,253 INFO L87 Difference]: Start difference. First operand 23109 states and 121651 transitions. Second operand 5 states. [2020-10-21 23:18:47,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:18:47,627 INFO L93 Difference]: Finished difference Result 41885 states and 209629 transitions. [2020-10-21 23:18:47,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:18:47,628 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-21 23:18:47,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:18:47,763 INFO L225 Difference]: With dead ends: 41885 [2020-10-21 23:18:47,763 INFO L226 Difference]: Without dead ends: 41856 [2020-10-21 23:18:47,763 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 23:18:48,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41856 states. [2020-10-21 23:18:49,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41856 to 28237. [2020-10-21 23:18:49,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28237 states. [2020-10-21 23:18:49,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28237 states to 28237 states and 150261 transitions. [2020-10-21 23:18:49,632 INFO L78 Accepts]: Start accepts. Automaton has 28237 states and 150261 transitions. Word has length 17 [2020-10-21 23:18:49,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:18:49,632 INFO L481 AbstractCegarLoop]: Abstraction has 28237 states and 150261 transitions. [2020-10-21 23:18:49,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:18:49,632 INFO L276 IsEmpty]: Start isEmpty. Operand 28237 states and 150261 transitions. [2020-10-21 23:18:49,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 23:18:49,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:18:49,633 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:18:49,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2020-10-21 23:18:49,633 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 23:18:49,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:18:49,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1122599135, now seen corresponding path program 1 times [2020-10-21 23:18:49,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:18:49,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734129968] [2020-10-21 23:18:49,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:18:49,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:49,676 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 23:18:49,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734129968] [2020-10-21 23:18:49,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644310868] [2020-10-21 23:18:49,677 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 23:18:49,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:49,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-21 23:18:49,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:18:49,833 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 23:18:49,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:18:49,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-21 23:18:49,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857769496] [2020-10-21 23:18:49,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-21 23:18:49,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:18:49,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-21 23:18:49,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-21 23:18:49,835 INFO L87 Difference]: Start difference. First operand 28237 states and 150261 transitions. Second operand 12 states. [2020-10-21 23:18:50,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:18:50,599 INFO L93 Difference]: Finished difference Result 66831 states and 314874 transitions. [2020-10-21 23:18:50,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:18:50,600 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-21 23:18:50,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:18:50,867 INFO L225 Difference]: With dead ends: 66831 [2020-10-21 23:18:50,868 INFO L226 Difference]: Without dead ends: 66807 [2020-10-21 23:18:50,868 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 23:18:51,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66807 states. [2020-10-21 23:18:55,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66807 to 28673. [2020-10-21 23:18:55,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28673 states. [2020-10-21 23:18:55,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28673 states to 28673 states and 152375 transitions. [2020-10-21 23:18:55,172 INFO L78 Accepts]: Start accepts. Automaton has 28673 states and 152375 transitions. Word has length 19 [2020-10-21 23:18:55,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:18:55,173 INFO L481 AbstractCegarLoop]: Abstraction has 28673 states and 152375 transitions. [2020-10-21 23:18:55,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-21 23:18:55,173 INFO L276 IsEmpty]: Start isEmpty. Operand 28673 states and 152375 transitions. [2020-10-21 23:18:55,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 23:18:55,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:18:55,174 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:18:55,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2020-10-21 23:18:55,387 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 23:18:55,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:18:55,387 INFO L82 PathProgramCache]: Analyzing trace with hash -30740687, now seen corresponding path program 1 times [2020-10-21 23:18:55,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:18:55,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507200287] [2020-10-21 23:18:55,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:18:55,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:55,433 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 23:18:55,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507200287] [2020-10-21 23:18:55,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488801144] [2020-10-21 23:18:55,434 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 23:18:55,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:55,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-21 23:18:55,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:18:55,596 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 23:18:55,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:18:55,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-21 23:18:55,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68083296] [2020-10-21 23:18:55,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-21 23:18:55,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:18:55,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-21 23:18:55,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-21 23:18:55,597 INFO L87 Difference]: Start difference. First operand 28673 states and 152375 transitions. Second operand 12 states. [2020-10-21 23:18:56,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:18:56,381 INFO L93 Difference]: Finished difference Result 69484 states and 328264 transitions. [2020-10-21 23:18:56,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:18:56,382 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-21 23:18:56,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:18:56,654 INFO L225 Difference]: With dead ends: 69484 [2020-10-21 23:18:56,654 INFO L226 Difference]: Without dead ends: 69451 [2020-10-21 23:18:56,655 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 23:18:57,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69451 states. [2020-10-21 23:18:58,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69451 to 28873. [2020-10-21 23:18:58,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28873 states. [2020-10-21 23:18:59,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28873 states to 28873 states and 153454 transitions. [2020-10-21 23:18:59,261 INFO L78 Accepts]: Start accepts. Automaton has 28873 states and 153454 transitions. Word has length 19 [2020-10-21 23:18:59,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:18:59,261 INFO L481 AbstractCegarLoop]: Abstraction has 28873 states and 153454 transitions. [2020-10-21 23:18:59,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-21 23:18:59,261 INFO L276 IsEmpty]: Start isEmpty. Operand 28873 states and 153454 transitions. [2020-10-21 23:18:59,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 23:18:59,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:18:59,262 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:18:59,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:18:59,463 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 23:18:59,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:18:59,463 INFO L82 PathProgramCache]: Analyzing trace with hash 973992033, now seen corresponding path program 2 times [2020-10-21 23:18:59,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:18:59,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373593757] [2020-10-21 23:18:59,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:18:59,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:18:59,518 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 23:18:59,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373593757] [2020-10-21 23:18:59,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:18:59,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:18:59,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780984833] [2020-10-21 23:18:59,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:18:59,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:18:59,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:18:59,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:18:59,519 INFO L87 Difference]: Start difference. First operand 28873 states and 153454 transitions. Second operand 7 states. [2020-10-21 23:19:00,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:19:00,221 INFO L93 Difference]: Finished difference Result 70510 states and 333491 transitions. [2020-10-21 23:19:00,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:19:00,222 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-21 23:19:00,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:19:00,449 INFO L225 Difference]: With dead ends: 70510 [2020-10-21 23:19:00,449 INFO L226 Difference]: Without dead ends: 70477 [2020-10-21 23:19:00,449 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 23:19:01,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70477 states. [2020-10-21 23:19:02,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70477 to 28942. [2020-10-21 23:19:02,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28942 states. [2020-10-21 23:19:02,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28942 states to 28942 states and 153921 transitions. [2020-10-21 23:19:02,261 INFO L78 Accepts]: Start accepts. Automaton has 28942 states and 153921 transitions. Word has length 19 [2020-10-21 23:19:02,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:19:02,261 INFO L481 AbstractCegarLoop]: Abstraction has 28942 states and 153921 transitions. [2020-10-21 23:19:02,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:19:02,261 INFO L276 IsEmpty]: Start isEmpty. Operand 28942 states and 153921 transitions. [2020-10-21 23:19:02,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 23:19:02,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:19:02,262 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:19:02,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2020-10-21 23:19:02,262 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 23:19:02,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:19:02,262 INFO L82 PathProgramCache]: Analyzing trace with hash 973976719, now seen corresponding path program 2 times [2020-10-21 23:19:02,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:19:02,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741328133] [2020-10-21 23:19:02,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:19:02,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:19:02,308 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 23:19:02,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741328133] [2020-10-21 23:19:02,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:19:02,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:19:02,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092796055] [2020-10-21 23:19:02,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:19:02,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:19:02,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:19:02,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:19:02,310 INFO L87 Difference]: Start difference. First operand 28942 states and 153921 transitions. Second operand 7 states. [2020-10-21 23:19:03,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:19:03,640 INFO L93 Difference]: Finished difference Result 70096 states and 331298 transitions. [2020-10-21 23:19:03,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:19:03,641 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-21 23:19:03,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:19:03,913 INFO L225 Difference]: With dead ends: 70096 [2020-10-21 23:19:03,913 INFO L226 Difference]: Without dead ends: 70063 [2020-10-21 23:19:03,913 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 23:19:04,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70063 states. [2020-10-21 23:19:05,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70063 to 29094. [2020-10-21 23:19:05,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29094 states. [2020-10-21 23:19:05,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29094 states to 29094 states and 154883 transitions. [2020-10-21 23:19:05,654 INFO L78 Accepts]: Start accepts. Automaton has 29094 states and 154883 transitions. Word has length 19 [2020-10-21 23:19:05,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:19:05,654 INFO L481 AbstractCegarLoop]: Abstraction has 29094 states and 154883 transitions. [2020-10-21 23:19:05,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:19:05,655 INFO L276 IsEmpty]: Start isEmpty. Operand 29094 states and 154883 transitions. [2020-10-21 23:19:05,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:19:05,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:19:05,656 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 23:19:05,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2020-10-21 23:19:05,656 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 23:19:05,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:19:05,656 INFO L82 PathProgramCache]: Analyzing trace with hash -223741824, now seen corresponding path program 1 times [2020-10-21 23:19:05,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:19:05,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213623901] [2020-10-21 23:19:05,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:19:05,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:19:05,731 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 23:19:05,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213623901] [2020-10-21 23:19:05,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899663587] [2020-10-21 23:19:05,732 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 23:19:05,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:19:05,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:19:05,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:19:05,942 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 23:19:05,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:19:05,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 23:19:05,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385526760] [2020-10-21 23:19:05,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 23:19:05,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:19:05,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 23:19:05,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 23:19:05,943 INFO L87 Difference]: Start difference. First operand 29094 states and 154883 transitions. Second operand 16 states. [2020-10-21 23:19:07,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:19:07,537 INFO L93 Difference]: Finished difference Result 100731 states and 448596 transitions. [2020-10-21 23:19:07,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:19:07,538 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-21 23:19:07,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:19:08,781 INFO L225 Difference]: With dead ends: 100731 [2020-10-21 23:19:08,781 INFO L226 Difference]: Without dead ends: 100715 [2020-10-21 23:19:08,781 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 23:19:09,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100715 states. [2020-10-21 23:19:10,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100715 to 28719. [2020-10-21 23:19:10,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28719 states. [2020-10-21 23:19:10,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28719 states to 28719 states and 152760 transitions. [2020-10-21 23:19:11,000 INFO L78 Accepts]: Start accepts. Automaton has 28719 states and 152760 transitions. Word has length 21 [2020-10-21 23:19:11,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:19:11,000 INFO L481 AbstractCegarLoop]: Abstraction has 28719 states and 152760 transitions. [2020-10-21 23:19:11,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 23:19:11,000 INFO L276 IsEmpty]: Start isEmpty. Operand 28719 states and 152760 transitions. [2020-10-21 23:19:11,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:19:11,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:19:11,001 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 23:19:11,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:19:11,202 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 23:19:11,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:19:11,202 INFO L82 PathProgramCache]: Analyzing trace with hash 780975582, now seen corresponding path program 2 times [2020-10-21 23:19:11,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:19:11,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019464139] [2020-10-21 23:19:11,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:19:11,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:19:11,268 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 23:19:11,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019464139] [2020-10-21 23:19:11,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098754931] [2020-10-21 23:19:11,269 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 23:19:11,361 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 23:19:11,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:19:11,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:19:11,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:19:11,480 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 23:19:11,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:19:11,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 23:19:11,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180034799] [2020-10-21 23:19:11,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 23:19:11,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:19:11,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 23:19:11,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 23:19:11,481 INFO L87 Difference]: Start difference. First operand 28719 states and 152760 transitions. Second operand 16 states. [2020-10-21 23:19:13,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:19:13,481 INFO L93 Difference]: Finished difference Result 99876 states and 444348 transitions. [2020-10-21 23:19:13,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:19:13,482 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-21 23:19:13,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:19:13,789 INFO L225 Difference]: With dead ends: 99876 [2020-10-21 23:19:13,789 INFO L226 Difference]: Without dead ends: 99855 [2020-10-21 23:19:13,790 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 23:19:14,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99855 states. [2020-10-21 23:19:16,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99855 to 28343. [2020-10-21 23:19:16,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28343 states. [2020-10-21 23:19:16,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28343 states to 28343 states and 150639 transitions. [2020-10-21 23:19:16,878 INFO L78 Accepts]: Start accepts. Automaton has 28343 states and 150639 transitions. Word has length 21 [2020-10-21 23:19:16,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:19:16,878 INFO L481 AbstractCegarLoop]: Abstraction has 28343 states and 150639 transitions. [2020-10-21 23:19:16,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 23:19:16,878 INFO L276 IsEmpty]: Start isEmpty. Operand 28343 states and 150639 transitions. [2020-10-21 23:19:16,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:19:16,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:19:16,879 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 23:19:17,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2020-10-21 23:19:17,080 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 23:19:17,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:19:17,081 INFO L82 PathProgramCache]: Analyzing trace with hash -141594176, now seen corresponding path program 3 times [2020-10-21 23:19:17,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:19:17,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228525548] [2020-10-21 23:19:17,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:19:17,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:19:17,147 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 23:19:17,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228525548] [2020-10-21 23:19:17,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236969891] [2020-10-21 23:19:17,148 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 23:19:17,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-21 23:19:17,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:19:17,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:19:17,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:19:17,374 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 23:19:17,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:19:17,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 23:19:17,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103125155] [2020-10-21 23:19:17,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 23:19:17,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:19:17,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 23:19:17,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 23:19:17,376 INFO L87 Difference]: Start difference. First operand 28343 states and 150639 transitions. Second operand 16 states. [2020-10-21 23:19:18,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:19:18,933 INFO L93 Difference]: Finished difference Result 100071 states and 445291 transitions. [2020-10-21 23:19:18,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:19:18,934 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-21 23:19:18,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:19:19,282 INFO L225 Difference]: With dead ends: 100071 [2020-10-21 23:19:19,282 INFO L226 Difference]: Without dead ends: 100055 [2020-10-21 23:19:19,283 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 23:19:20,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100055 states. [2020-10-21 23:19:24,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100055 to 27654. [2020-10-21 23:19:24,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27654 states. [2020-10-21 23:19:24,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27654 states to 27654 states and 147080 transitions. [2020-10-21 23:19:24,368 INFO L78 Accepts]: Start accepts. Automaton has 27654 states and 147080 transitions. Word has length 21 [2020-10-21 23:19:24,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:19:24,368 INFO L481 AbstractCegarLoop]: Abstraction has 27654 states and 147080 transitions. [2020-10-21 23:19:24,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 23:19:24,368 INFO L276 IsEmpty]: Start isEmpty. Operand 27654 states and 147080 transitions. [2020-10-21 23:19:24,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:19:24,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:19:24,369 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 23:19:24,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:19:24,570 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 23:19:24,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:19:24,571 INFO L82 PathProgramCache]: Analyzing trace with hash 522984322, now seen corresponding path program 4 times [2020-10-21 23:19:24,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:19:24,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510996638] [2020-10-21 23:19:24,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:19:24,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:19:24,640 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 23:19:24,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510996638] [2020-10-21 23:19:24,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664572313] [2020-10-21 23:19:24,641 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 23:19:24,738 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-21 23:19:24,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:19:24,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:19:24,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:19:24,855 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 23:19:24,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:19:24,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 23:19:24,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309547917] [2020-10-21 23:19:24,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 23:19:24,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:19:24,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 23:19:24,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 23:19:24,857 INFO L87 Difference]: Start difference. First operand 27654 states and 147080 transitions. Second operand 16 states. [2020-10-21 23:19:26,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:19:26,396 INFO L93 Difference]: Finished difference Result 99523 states and 442763 transitions. [2020-10-21 23:19:26,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:19:26,397 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-21 23:19:26,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:19:27,390 INFO L225 Difference]: With dead ends: 99523 [2020-10-21 23:19:27,391 INFO L226 Difference]: Without dead ends: 99502 [2020-10-21 23:19:27,391 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 23:19:28,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99502 states. [2020-10-21 23:19:29,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99502 to 27278. [2020-10-21 23:19:29,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27278 states. [2020-10-21 23:19:29,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27278 states to 27278 states and 144959 transitions. [2020-10-21 23:19:29,439 INFO L78 Accepts]: Start accepts. Automaton has 27278 states and 144959 transitions. Word has length 21 [2020-10-21 23:19:29,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:19:29,439 INFO L481 AbstractCegarLoop]: Abstraction has 27278 states and 144959 transitions. [2020-10-21 23:19:29,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 23:19:29,440 INFO L276 IsEmpty]: Start isEmpty. Operand 27278 states and 144959 transitions. [2020-10-21 23:19:29,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:19:29,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:19:29,441 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:19:29,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2020-10-21 23:19:29,641 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 23:19:29,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:19:29,642 INFO L82 PathProgramCache]: Analyzing trace with hash -456681683, now seen corresponding path program 1 times [2020-10-21 23:19:29,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:19:29,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876372325] [2020-10-21 23:19:29,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:19:29,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:19:29,675 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 23:19:29,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876372325] [2020-10-21 23:19:29,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:19:29,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:19:29,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123343360] [2020-10-21 23:19:29,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:19:29,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:19:29,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:19:29,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:19:29,677 INFO L87 Difference]: Start difference. First operand 27278 states and 144959 transitions. Second operand 5 states. [2020-10-21 23:19:30,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:19:30,640 INFO L93 Difference]: Finished difference Result 48996 states and 248701 transitions. [2020-10-21 23:19:30,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:19:30,641 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-21 23:19:30,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:19:30,814 INFO L225 Difference]: With dead ends: 48996 [2020-10-21 23:19:30,814 INFO L226 Difference]: Without dead ends: 48950 [2020-10-21 23:19:30,815 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 23:19:31,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48950 states. [2020-10-21 23:19:32,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48950 to 33977. [2020-10-21 23:19:32,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33977 states. [2020-10-21 23:19:32,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33977 states to 33977 states and 181757 transitions. [2020-10-21 23:19:32,324 INFO L78 Accepts]: Start accepts. Automaton has 33977 states and 181757 transitions. Word has length 21 [2020-10-21 23:19:32,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:19:32,324 INFO L481 AbstractCegarLoop]: Abstraction has 33977 states and 181757 transitions. [2020-10-21 23:19:32,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:19:32,324 INFO L276 IsEmpty]: Start isEmpty. Operand 33977 states and 181757 transitions. [2020-10-21 23:19:32,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:19:32,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:19:32,325 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 23:19:32,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2020-10-21 23:19:32,325 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 23:19:32,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:19:32,326 INFO L82 PathProgramCache]: Analyzing trace with hash -296528672, now seen corresponding path program 5 times [2020-10-21 23:19:32,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:19:32,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531001928] [2020-10-21 23:19:32,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:19:32,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:19:32,395 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 23:19:32,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531001928] [2020-10-21 23:19:32,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:19:32,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:19:32,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080996043] [2020-10-21 23:19:32,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:19:32,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:19:32,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:19:32,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:19:32,397 INFO L87 Difference]: Start difference. First operand 33977 states and 181757 transitions. Second operand 9 states. [2020-10-21 23:19:36,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:19:36,251 INFO L93 Difference]: Finished difference Result 115584 states and 523727 transitions. [2020-10-21 23:19:36,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:19:36,252 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-21 23:19:36,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:19:36,629 INFO L225 Difference]: With dead ends: 115584 [2020-10-21 23:19:36,630 INFO L226 Difference]: Without dead ends: 115559 [2020-10-21 23:19:36,630 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 23:19:37,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115559 states. [2020-10-21 23:19:39,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115559 to 33074. [2020-10-21 23:19:39,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33074 states. [2020-10-21 23:19:39,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33074 states to 33074 states and 176935 transitions. [2020-10-21 23:19:39,623 INFO L78 Accepts]: Start accepts. Automaton has 33074 states and 176935 transitions. Word has length 21 [2020-10-21 23:19:39,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:19:39,624 INFO L481 AbstractCegarLoop]: Abstraction has 33074 states and 176935 transitions. [2020-10-21 23:19:39,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:19:39,624 INFO L276 IsEmpty]: Start isEmpty. Operand 33074 states and 176935 transitions. [2020-10-21 23:19:39,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 23:19:39,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:19:39,625 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 23:19:39,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2020-10-21 23:19:39,625 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 23:19:39,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:19:39,626 INFO L82 PathProgramCache]: Analyzing trace with hash -311230112, now seen corresponding path program 6 times [2020-10-21 23:19:39,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:19:39,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850071297] [2020-10-21 23:19:39,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:19:39,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:19:39,687 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 23:19:39,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850071297] [2020-10-21 23:19:39,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:19:39,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 23:19:39,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774875863] [2020-10-21 23:19:39,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 23:19:39,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:19:39,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 23:19:39,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:19:39,689 INFO L87 Difference]: Start difference. First operand 33074 states and 176935 transitions. Second operand 9 states. [2020-10-21 23:19:41,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:19:41,142 INFO L93 Difference]: Finished difference Result 114402 states and 517732 transitions. [2020-10-21 23:19:41,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:19:41,143 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-21 23:19:41,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:19:41,512 INFO L225 Difference]: With dead ends: 114402 [2020-10-21 23:19:41,512 INFO L226 Difference]: Without dead ends: 114371 [2020-10-21 23:19:41,512 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 23:19:42,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114371 states. [2020-10-21 23:19:44,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114371 to 31960. [2020-10-21 23:19:44,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31960 states. [2020-10-21 23:19:44,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31960 states to 31960 states and 171209 transitions. [2020-10-21 23:19:44,908 INFO L78 Accepts]: Start accepts. Automaton has 31960 states and 171209 transitions. Word has length 21 [2020-10-21 23:19:44,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:19:44,908 INFO L481 AbstractCegarLoop]: Abstraction has 31960 states and 171209 transitions. [2020-10-21 23:19:44,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 23:19:44,908 INFO L276 IsEmpty]: Start isEmpty. Operand 31960 states and 171209 transitions. [2020-10-21 23:19:44,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 23:19:44,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:19:44,910 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:19:44,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2020-10-21 23:19:44,910 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 23:19:44,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:19:44,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1247180612, now seen corresponding path program 1 times [2020-10-21 23:19:44,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:19:44,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947863836] [2020-10-21 23:19:44,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:19:44,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:19:44,954 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 23:19:44,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947863836] [2020-10-21 23:19:44,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550406766] [2020-10-21 23:19:44,955 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 23:19:45,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:19:45,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-21 23:19:45,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:19:45,126 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 23:19:45,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:19:45,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-21 23:19:45,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26530395] [2020-10-21 23:19:45,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-21 23:19:45,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:19:45,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-21 23:19:45,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-21 23:19:45,128 INFO L87 Difference]: Start difference. First operand 31960 states and 171209 transitions. Second operand 12 states. [2020-10-21 23:19:45,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:19:45,881 INFO L93 Difference]: Finished difference Result 75380 states and 361389 transitions. [2020-10-21 23:19:45,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:19:45,882 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-21 23:19:45,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:19:46,099 INFO L225 Difference]: With dead ends: 75380 [2020-10-21 23:19:46,099 INFO L226 Difference]: Without dead ends: 75344 [2020-10-21 23:19:46,100 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 23:19:49,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75344 states. [2020-10-21 23:19:50,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75344 to 32974. [2020-10-21 23:19:50,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32974 states. [2020-10-21 23:19:50,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32974 states to 32974 states and 176363 transitions. [2020-10-21 23:19:50,289 INFO L78 Accepts]: Start accepts. Automaton has 32974 states and 176363 transitions. Word has length 23 [2020-10-21 23:19:50,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:19:50,289 INFO L481 AbstractCegarLoop]: Abstraction has 32974 states and 176363 transitions. [2020-10-21 23:19:50,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-21 23:19:50,290 INFO L276 IsEmpty]: Start isEmpty. Operand 32974 states and 176363 transitions. [2020-10-21 23:19:50,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 23:19:50,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:19:50,291 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:19:50,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:19:50,492 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 23:19:50,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:19:50,493 INFO L82 PathProgramCache]: Analyzing trace with hash -83395058, now seen corresponding path program 1 times [2020-10-21 23:19:50,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:19:50,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742507751] [2020-10-21 23:19:50,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:19:50,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:19:50,542 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 23:19:50,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742507751] [2020-10-21 23:19:50,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709408827] [2020-10-21 23:19:50,543 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 23:19:50,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:19:50,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-21 23:19:50,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:19:50,710 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 23:19:50,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:19:50,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-21 23:19:50,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302167609] [2020-10-21 23:19:50,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-21 23:19:50,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:19:50,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-21 23:19:50,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-21 23:19:50,712 INFO L87 Difference]: Start difference. First operand 32974 states and 176363 transitions. Second operand 12 states. [2020-10-21 23:19:51,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:19:51,499 INFO L93 Difference]: Finished difference Result 79487 states and 381757 transitions. [2020-10-21 23:19:51,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:19:51,500 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-21 23:19:51,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:19:51,779 INFO L225 Difference]: With dead ends: 79487 [2020-10-21 23:19:51,779 INFO L226 Difference]: Without dead ends: 79445 [2020-10-21 23:19:51,779 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 23:19:53,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79445 states. [2020-10-21 23:19:54,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79445 to 33981. [2020-10-21 23:19:54,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33981 states. [2020-10-21 23:19:54,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33981 states to 33981 states and 181710 transitions. [2020-10-21 23:19:54,456 INFO L78 Accepts]: Start accepts. Automaton has 33981 states and 181710 transitions. Word has length 23 [2020-10-21 23:19:54,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:19:54,456 INFO L481 AbstractCegarLoop]: Abstraction has 33981 states and 181710 transitions. [2020-10-21 23:19:54,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-21 23:19:54,457 INFO L276 IsEmpty]: Start isEmpty. Operand 33981 states and 181710 transitions. [2020-10-21 23:19:54,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 23:19:54,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:19:54,459 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:19:54,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,28 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:19:54,667 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 23:19:54,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:19:54,667 INFO L82 PathProgramCache]: Analyzing trace with hash 859803225, now seen corresponding path program 1 times [2020-10-21 23:19:54,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:19:54,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598884246] [2020-10-21 23:19:54,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:19:54,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:19:54,715 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 23:19:54,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598884246] [2020-10-21 23:19:54,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269648683] [2020-10-21 23:19:54,716 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 23:19:54,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:19:54,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-21 23:19:54,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:19:54,888 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 23:19:54,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:19:54,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-21 23:19:54,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754979064] [2020-10-21 23:19:54,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-21 23:19:54,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:19:54,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-21 23:19:54,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-21 23:19:54,890 INFO L87 Difference]: Start difference. First operand 33981 states and 181710 transitions. Second operand 12 states. [2020-10-21 23:19:55,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:19:55,782 INFO L93 Difference]: Finished difference Result 82728 states and 398553 transitions. [2020-10-21 23:19:55,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:19:55,783 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-21 23:19:55,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:19:56,074 INFO L225 Difference]: With dead ends: 82728 [2020-10-21 23:19:56,074 INFO L226 Difference]: Without dead ends: 82673 [2020-10-21 23:19:56,074 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 23:19:59,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82673 states. [2020-10-21 23:20:00,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82673 to 34821. [2020-10-21 23:20:00,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34821 states. [2020-10-21 23:20:00,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34821 states to 34821 states and 186422 transitions. [2020-10-21 23:20:00,667 INFO L78 Accepts]: Start accepts. Automaton has 34821 states and 186422 transitions. Word has length 23 [2020-10-21 23:20:00,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:20:00,667 INFO L481 AbstractCegarLoop]: Abstraction has 34821 states and 186422 transitions. [2020-10-21 23:20:00,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-21 23:20:00,667 INFO L276 IsEmpty]: Start isEmpty. Operand 34821 states and 186422 transitions. [2020-10-21 23:20:00,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 23:20:00,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:20:00,669 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:20:00,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:20:00,870 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 23:20:00,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:20:00,871 INFO L82 PathProgramCache]: Analyzing trace with hash -784422783, now seen corresponding path program 2 times [2020-10-21 23:20:00,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:20:00,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80082528] [2020-10-21 23:20:00,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:20:00,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:20:00,917 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 23:20:00,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80082528] [2020-10-21 23:20:00,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:20:00,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:20:00,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873275105] [2020-10-21 23:20:00,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:20:00,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:20:00,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:20:00,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:20:00,918 INFO L87 Difference]: Start difference. First operand 34821 states and 186422 transitions. Second operand 7 states. [2020-10-21 23:20:01,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:20:01,676 INFO L93 Difference]: Finished difference Result 83487 states and 402661 transitions. [2020-10-21 23:20:01,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:20:01,676 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-21 23:20:01,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:20:01,942 INFO L225 Difference]: With dead ends: 83487 [2020-10-21 23:20:01,942 INFO L226 Difference]: Without dead ends: 83432 [2020-10-21 23:20:01,943 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 23:20:03,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83432 states. [2020-10-21 23:20:04,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83432 to 35694. [2020-10-21 23:20:04,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35694 states. [2020-10-21 23:20:04,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35694 states to 35694 states and 191145 transitions. [2020-10-21 23:20:04,685 INFO L78 Accepts]: Start accepts. Automaton has 35694 states and 191145 transitions. Word has length 23 [2020-10-21 23:20:04,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:20:04,685 INFO L481 AbstractCegarLoop]: Abstraction has 35694 states and 191145 transitions. [2020-10-21 23:20:04,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:20:04,685 INFO L276 IsEmpty]: Start isEmpty. Operand 35694 states and 191145 transitions. [2020-10-21 23:20:04,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 23:20:04,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:20:04,687 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:20:04,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2020-10-21 23:20:04,687 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 23:20:04,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:20:04,688 INFO L82 PathProgramCache]: Analyzing trace with hash -784419714, now seen corresponding path program 2 times [2020-10-21 23:20:04,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:20:04,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037181543] [2020-10-21 23:20:04,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:20:04,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:20:04,735 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 23:20:04,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037181543] [2020-10-21 23:20:04,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:20:04,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:20:04,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606888121] [2020-10-21 23:20:04,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:20:04,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:20:04,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:20:04,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:20:04,737 INFO L87 Difference]: Start difference. First operand 35694 states and 191145 transitions. Second operand 7 states. [2020-10-21 23:20:05,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:20:05,519 INFO L93 Difference]: Finished difference Result 83543 states and 402494 transitions. [2020-10-21 23:20:05,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:20:05,519 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-21 23:20:05,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:20:08,633 INFO L225 Difference]: With dead ends: 83543 [2020-10-21 23:20:08,633 INFO L226 Difference]: Without dead ends: 83488 [2020-10-21 23:20:08,633 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 23:20:09,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83488 states. [2020-10-21 23:20:10,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83488 to 36306. [2020-10-21 23:20:10,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36306 states. [2020-10-21 23:20:10,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36306 states to 36306 states and 194552 transitions. [2020-10-21 23:20:10,768 INFO L78 Accepts]: Start accepts. Automaton has 36306 states and 194552 transitions. Word has length 23 [2020-10-21 23:20:10,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:20:10,768 INFO L481 AbstractCegarLoop]: Abstraction has 36306 states and 194552 transitions. [2020-10-21 23:20:10,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:20:10,768 INFO L276 IsEmpty]: Start isEmpty. Operand 36306 states and 194552 transitions. [2020-10-21 23:20:10,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 23:20:10,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:20:10,771 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:20:10,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2020-10-21 23:20:10,771 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 23:20:10,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:20:10,771 INFO L82 PathProgramCache]: Analyzing trace with hash -784435028, now seen corresponding path program 2 times [2020-10-21 23:20:10,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:20:10,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984111109] [2020-10-21 23:20:10,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:20:10,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:20:10,827 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 23:20:10,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984111109] [2020-10-21 23:20:10,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:20:10,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:20:10,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534883559] [2020-10-21 23:20:10,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:20:10,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:20:10,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:20:10,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:20:10,828 INFO L87 Difference]: Start difference. First operand 36306 states and 194552 transitions. Second operand 7 states. [2020-10-21 23:20:11,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:20:11,597 INFO L93 Difference]: Finished difference Result 83918 states and 404136 transitions. [2020-10-21 23:20:11,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 23:20:11,597 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-21 23:20:11,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:20:12,593 INFO L225 Difference]: With dead ends: 83918 [2020-10-21 23:20:12,594 INFO L226 Difference]: Without dead ends: 83863 [2020-10-21 23:20:12,594 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 23:20:13,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83863 states. [2020-10-21 23:20:14,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83863 to 37062. [2020-10-21 23:20:14,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37062 states. [2020-10-21 23:20:14,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37062 states to 37062 states and 198528 transitions. [2020-10-21 23:20:14,726 INFO L78 Accepts]: Start accepts. Automaton has 37062 states and 198528 transitions. Word has length 23 [2020-10-21 23:20:14,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:20:14,726 INFO L481 AbstractCegarLoop]: Abstraction has 37062 states and 198528 transitions. [2020-10-21 23:20:14,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:20:14,726 INFO L276 IsEmpty]: Start isEmpty. Operand 37062 states and 198528 transitions. [2020-10-21 23:20:14,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:20:14,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:20:14,729 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 23:20:14,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2020-10-21 23:20:14,729 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 23:20:14,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:20:14,730 INFO L82 PathProgramCache]: Analyzing trace with hash 456345565, now seen corresponding path program 1 times [2020-10-21 23:20:14,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:20:14,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532540394] [2020-10-21 23:20:14,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:20:14,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:20:14,802 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 23:20:14,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532540394] [2020-10-21 23:20:14,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715136105] [2020-10-21 23:20:14,803 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 23:20:14,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:20:14,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:20:14,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:20:15,017 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 23:20:15,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:20:15,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 23:20:15,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618770334] [2020-10-21 23:20:15,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 23:20:15,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:20:15,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 23:20:15,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 23:20:15,018 INFO L87 Difference]: Start difference. First operand 37062 states and 198528 transitions. Second operand 16 states. [2020-10-21 23:20:17,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:20:17,268 INFO L93 Difference]: Finished difference Result 122892 states and 561130 transitions. [2020-10-21 23:20:17,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:20:17,269 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-21 23:20:17,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:20:17,689 INFO L225 Difference]: With dead ends: 122892 [2020-10-21 23:20:17,689 INFO L226 Difference]: Without dead ends: 122862 [2020-10-21 23:20:17,690 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 23:20:18,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122862 states. [2020-10-21 23:20:23,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122862 to 36727. [2020-10-21 23:20:23,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36727 states. [2020-10-21 23:20:23,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36727 states to 36727 states and 196466 transitions. [2020-10-21 23:20:23,909 INFO L78 Accepts]: Start accepts. Automaton has 36727 states and 196466 transitions. Word has length 25 [2020-10-21 23:20:23,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:20:23,909 INFO L481 AbstractCegarLoop]: Abstraction has 36727 states and 196466 transitions. [2020-10-21 23:20:23,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 23:20:23,910 INFO L276 IsEmpty]: Start isEmpty. Operand 36727 states and 196466 transitions. [2020-10-21 23:20:23,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:20:23,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:20:23,912 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:20:24,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2020-10-21 23:20:24,114 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 23:20:24,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:20:24,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1399543848, now seen corresponding path program 1 times [2020-10-21 23:20:24,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:20:24,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332812841] [2020-10-21 23:20:24,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:20:24,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:20:24,184 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 23:20:24,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332812841] [2020-10-21 23:20:24,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260852119] [2020-10-21 23:20:24,185 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 23:20:24,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:20:24,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:20:24,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:20:24,390 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 23:20:24,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:20:24,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 23:20:24,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849372939] [2020-10-21 23:20:24,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 23:20:24,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:20:24,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 23:20:24,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 23:20:24,393 INFO L87 Difference]: Start difference. First operand 36727 states and 196466 transitions. Second operand 16 states. [2020-10-21 23:20:26,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:20:26,168 INFO L93 Difference]: Finished difference Result 121590 states and 554657 transitions. [2020-10-21 23:20:26,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:20:26,169 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-21 23:20:26,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:20:26,580 INFO L225 Difference]: With dead ends: 121590 [2020-10-21 23:20:26,580 INFO L226 Difference]: Without dead ends: 121560 [2020-10-21 23:20:26,580 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 23:20:27,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121560 states. [2020-10-21 23:20:30,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121560 to 36513. [2020-10-21 23:20:30,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36513 states. [2020-10-21 23:20:30,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36513 states to 36513 states and 195090 transitions. [2020-10-21 23:20:30,158 INFO L78 Accepts]: Start accepts. Automaton has 36513 states and 195090 transitions. Word has length 25 [2020-10-21 23:20:30,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:20:30,158 INFO L481 AbstractCegarLoop]: Abstraction has 36513 states and 195090 transitions. [2020-10-21 23:20:30,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 23:20:30,159 INFO L276 IsEmpty]: Start isEmpty. Operand 36513 states and 195090 transitions. [2020-10-21 23:20:30,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:20:30,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:20:30,163 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 23:20:30,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 23:20:30,363 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 23:20:30,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:20:30,364 INFO L82 PathProgramCache]: Analyzing trace with hash -244682160, now seen corresponding path program 2 times [2020-10-21 23:20:30,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:20:30,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115595412] [2020-10-21 23:20:30,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:20:30,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:20:30,434 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 23:20:30,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115595412] [2020-10-21 23:20:30,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253826197] [2020-10-21 23:20:30,435 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 23:20:30,537 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 23:20:30,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:20:30,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:20:30,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:20:30,650 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 23:20:30,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:20:30,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 23:20:30,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282385792] [2020-10-21 23:20:30,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 23:20:30,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:20:30,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 23:20:30,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 23:20:30,652 INFO L87 Difference]: Start difference. First operand 36513 states and 195090 transitions. Second operand 16 states. [2020-10-21 23:20:32,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:20:32,300 INFO L93 Difference]: Finished difference Result 120395 states and 548664 transitions. [2020-10-21 23:20:32,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:20:32,301 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-21 23:20:32,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:20:33,724 INFO L225 Difference]: With dead ends: 120395 [2020-10-21 23:20:33,724 INFO L226 Difference]: Without dead ends: 120362 [2020-10-21 23:20:33,724 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 23:20:34,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120362 states. [2020-10-21 23:20:36,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120362 to 36444. [2020-10-21 23:20:36,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36444 states. [2020-10-21 23:20:36,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36444 states to 36444 states and 194571 transitions. [2020-10-21 23:20:36,459 INFO L78 Accepts]: Start accepts. Automaton has 36444 states and 194571 transitions. Word has length 25 [2020-10-21 23:20:36,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:20:36,459 INFO L481 AbstractCegarLoop]: Abstraction has 36444 states and 194571 transitions. [2020-10-21 23:20:36,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 23:20:36,459 INFO L276 IsEmpty]: Start isEmpty. Operand 36444 states and 194571 transitions. [2020-10-21 23:20:36,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:20:36,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:20:36,461 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 23:20:36,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2020-10-21 23:20:36,662 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 23:20:36,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:20:36,663 INFO L82 PathProgramCache]: Analyzing trace with hash -244694405, now seen corresponding path program 2 times [2020-10-21 23:20:36,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:20:36,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930764369] [2020-10-21 23:20:36,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:20:36,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:20:36,728 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 23:20:36,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930764369] [2020-10-21 23:20:36,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160204769] [2020-10-21 23:20:36,729 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 23:20:36,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 23:20:36,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 23:20:36,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 23:20:36,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 23:20:36,996 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 23:20:36,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 23:20:36,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 23:20:36,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227098548] [2020-10-21 23:20:36,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 23:20:36,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:20:36,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 23:20:36,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 23:20:36,998 INFO L87 Difference]: Start difference. First operand 36444 states and 194571 transitions. Second operand 16 states. Received shutdown request... [2020-10-21 23:20:38,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 23:20:38,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2020-10-21 23:20:38,693 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-21 23:20:38,697 WARN L235 ceAbstractionStarter]: Timeout [2020-10-21 23:20:38,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 11:20:38 BasicIcfg [2020-10-21 23:20:38,698 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-21 23:20:38,699 INFO L168 Benchmark]: Toolchain (without parser) took 222215.66 ms. Allocated memory was 145.8 MB in the beginning and 2.9 GB in the end (delta: 2.7 GB). Free memory was 100.3 MB in the beginning and 1.8 GB in the end (delta: -1.7 GB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2020-10-21 23:20:38,699 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 145.8 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-10-21 23:20:38,700 INFO L168 Benchmark]: CACSL2BoogieTranslator took 772.96 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 99.4 MB in the beginning and 157.9 MB in the end (delta: -58.5 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2020-10-21 23:20:38,700 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.71 ms. Allocated memory is still 202.4 MB. Free memory was 157.9 MB in the beginning and 155.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-10-21 23:20:38,700 INFO L168 Benchmark]: Boogie Preprocessor took 40.94 ms. Allocated memory is still 202.4 MB. Free memory was 155.8 MB in the beginning and 154.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-21 23:20:38,701 INFO L168 Benchmark]: RCFGBuilder took 442.69 ms. Allocated memory is still 202.4 MB. Free memory was 153.7 MB in the beginning and 132.0 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-10-21 23:20:38,701 INFO L168 Benchmark]: TraceAbstraction took 220896.62 ms. Allocated memory was 202.4 MB in the beginning and 2.9 GB in the end (delta: 2.7 GB). Free memory was 131.3 MB in the beginning and 1.8 GB in the end (delta: -1.7 GB). Peak memory consumption was 993.7 MB. Max. memory is 7.1 GB. [2020-10-21 23:20:38,704 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 145.8 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 772.96 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 99.4 MB in the beginning and 157.9 MB in the end (delta: -58.5 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.71 ms. Allocated memory is still 202.4 MB. Free memory was 157.9 MB in the beginning and 155.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 40.94 ms. Allocated memory is still 202.4 MB. Free memory was 155.8 MB in the beginning and 154.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 442.69 ms. Allocated memory is still 202.4 MB. Free memory was 153.7 MB in the beginning and 132.0 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 220896.62 ms. Allocated memory was 202.4 MB in the beginning and 2.9 GB in the end (delta: 2.7 GB). Free memory was 131.3 MB in the beginning and 1.8 GB in the end (delta: -1.7 GB). Peak memory consumption was 993.7 MB. 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: 2.5s, 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: 2.9s, 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 BasicCegarLoop was constructing difference of abstraction (36444states) and FLOYD_HOARE automaton (currently 29 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (24799 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 63 locations, 1 error locations. Started 6 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 220.5s, OverallIterations: 102, TraceHistogramMax: 6, AutomataDifference: 87.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 18.9s, HoareTripleCheckerStatistics: 4463 SDtfs, 21802 SDslu, 15055 SDs, 0 SdLazy, 28900 SolverSat, 1920 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 23.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2386 GetRequests, 472 SyntacticMatches, 0 SemanticMatches, 1914 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12340 ImplicationChecksByTransitivity, 22.7s 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: 93.8s AutomataMinimizationTime, 96 MinimizatonAttempts, 1944518 StatesRemovedByMinimization, 89 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 8.5s InterpolantComputationTime, 2635 NumberOfCodeBlocks, 2623 NumberOfCodeBlocksAsserted, 146 NumberOfCheckSat, 2418 ConstructedInterpolants, 0 QuantifiedInterpolants, 324628 SizeOfPredicates, 168 NumberOfNonLiveVariables, 4057 ConjunctsInSsa, 264 ConjunctsInUnsatCore, 129 InterpolantComputations, 65 PerfectInterpolantSequences, 902/1404 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