/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-ext/17_szymanski.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-21 21:38:31,031 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-21 21:38:31,034 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-21 21:38:31,076 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-21 21:38:31,076 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-21 21:38:31,084 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-21 21:38:31,090 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-21 21:38:31,091 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-21 21:38:31,094 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-21 21:38:31,096 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-21 21:38:31,098 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-21 21:38:31,100 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-21 21:38:31,100 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-21 21:38:31,103 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-21 21:38:31,105 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-21 21:38:31,107 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-21 21:38:31,109 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-21 21:38:31,110 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-21 21:38:31,111 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-21 21:38:31,118 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-21 21:38:31,120 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-21 21:38:31,122 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-21 21:38:31,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-21 21:38:31,123 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-21 21:38:31,136 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-21 21:38:31,142 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-21 21:38:31,143 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-21 21:38:31,143 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-21 21:38:31,146 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-21 21:38:31,147 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-21 21:38:31,147 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-21 21:38:31,148 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-21 21:38:31,148 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-21 21:38:31,148 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-21 21:38:31,153 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-21 21:38:31,154 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-21 21:38:31,157 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-21 21:38:31,191 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-21 21:38:31,191 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-21 21:38:31,193 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-21 21:38:31,193 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-21 21:38:31,194 INFO L138 SettingsManager]: * Use SBE=true [2020-10-21 21:38:31,194 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-21 21:38:31,195 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-21 21:38:31,195 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-21 21:38:31,195 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-21 21:38:31,196 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-21 21:38:31,196 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-21 21:38:31,197 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-21 21:38:31,197 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-21 21:38:31,197 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-21 21:38:31,197 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-21 21:38:31,198 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-21 21:38:31,198 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-21 21:38:31,198 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-21 21:38:31,198 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-21 21:38:31,198 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-21 21:38:31,199 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-21 21:38:31,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-21 21:38:31,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-21 21:38:31,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-21 21:38:31,199 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-21 21:38:31,200 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-21 21:38:31,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-21 21:38:31,200 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-21 21:38:31,200 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-21 21:38:31,201 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-21 21:38:31,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-21 21:38:31,521 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-21 21:38:31,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-21 21:38:31,526 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-21 21:38:31,527 INFO L275 PluginConnector]: CDTParser initialized [2020-10-21 21:38:31,527 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/17_szymanski.i [2020-10-21 21:38:31,591 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29d038bd5/61b7acb50bb848daae7af18b56fe7ac2/FLAG15fd931d6 [2020-10-21 21:38:32,177 INFO L306 CDTParser]: Found 1 translation units. [2020-10-21 21:38:32,178 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/17_szymanski.i [2020-10-21 21:38:32,199 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29d038bd5/61b7acb50bb848daae7af18b56fe7ac2/FLAG15fd931d6 [2020-10-21 21:38:32,430 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29d038bd5/61b7acb50bb848daae7af18b56fe7ac2 [2020-10-21 21:38:32,438 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-21 21:38:32,444 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-21 21:38:32,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-21 21:38:32,446 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-21 21:38:32,449 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-21 21:38:32,450 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 09:38:32" (1/1) ... [2020-10-21 21:38:32,453 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6956cf0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:38:32, skipping insertion in model container [2020-10-21 21:38:32,453 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 09:38:32" (1/1) ... [2020-10-21 21:38:32,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-21 21:38:32,519 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-21 21:38:32,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 21:38:32,975 INFO L203 MainTranslator]: Completed pre-run [2020-10-21 21:38:33,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 21:38:33,109 INFO L208 MainTranslator]: Completed translation [2020-10-21 21:38:33,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:38:33 WrapperNode [2020-10-21 21:38:33,111 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-21 21:38:33,112 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-21 21:38:33,112 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-21 21:38:33,113 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-21 21:38:33,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:38:33" (1/1) ... [2020-10-21 21:38:33,146 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:38:33" (1/1) ... [2020-10-21 21:38:33,178 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-21 21:38:33,179 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-21 21:38:33,179 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-21 21:38:33,179 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-21 21:38:33,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:38:33" (1/1) ... [2020-10-21 21:38:33,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:38:33" (1/1) ... [2020-10-21 21:38:33,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:38:33" (1/1) ... [2020-10-21 21:38:33,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:38:33" (1/1) ... [2020-10-21 21:38:33,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:38:33" (1/1) ... [2020-10-21 21:38:33,220 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:38:33" (1/1) ... [2020-10-21 21:38:33,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:38:33" (1/1) ... [2020-10-21 21:38:33,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-21 21:38:33,226 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-21 21:38:33,226 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-21 21:38:33,226 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-21 21:38:33,227 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:38:33" (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 21:38:33,289 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-21 21:38:33,290 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-21 21:38:33,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-21 21:38:33,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-21 21:38:33,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-21 21:38:33,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-21 21:38:33,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-21 21:38:33,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-21 21:38:33,292 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 21:38:33,705 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-21 21:38:33,706 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-21 21:38:33,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 09:38:33 BoogieIcfgContainer [2020-10-21 21:38:33,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-21 21:38:33,709 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-21 21:38:33,710 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-21 21:38:33,713 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-21 21:38:33,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 09:38:32" (1/3) ... [2020-10-21 21:38:33,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d1f538e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 09:38:33, skipping insertion in model container [2020-10-21 21:38:33,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:38:33" (2/3) ... [2020-10-21 21:38:33,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d1f538e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 09:38:33, skipping insertion in model container [2020-10-21 21:38:33,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 09:38:33" (3/3) ... [2020-10-21 21:38:33,718 INFO L111 eAbstractionObserver]: Analyzing ICFG 17_szymanski.i [2020-10-21 21:38:33,730 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-21 21:38:33,731 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-21 21:38:33,740 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-21 21:38:33,741 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-21 21:38:33,769 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:33,770 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:33,770 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:33,771 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:33,771 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:33,771 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:33,772 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:33,773 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:33,773 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:33,774 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:33,778 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:33,778 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:33,779 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:33,779 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:33,779 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:33,779 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:33,785 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-21 21:38:33,800 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-21 21:38:33,822 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 21:38:33,822 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 21:38:33,822 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-21 21:38:33,822 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 21:38:33,822 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 21:38:33,823 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 21:38:33,823 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 21:38:33,823 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 21:38:33,837 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-21 21:38:33,840 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 96 transitions, 197 flow [2020-10-21 21:38:33,844 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 96 transitions, 197 flow [2020-10-21 21:38:33,846 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 74 places, 96 transitions, 197 flow [2020-10-21 21:38:33,897 INFO L129 PetriNetUnfolder]: 26/95 cut-off events. [2020-10-21 21:38:33,897 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-21 21:38:33,905 INFO L80 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 95 events. 26/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 155 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 80. Up to 3 conditions per place. [2020-10-21 21:38:33,909 INFO L116 LiptonReduction]: Number of co-enabled transitions 3150 [2020-10-21 21:38:34,956 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-10-21 21:38:35,077 INFO L131 LiptonReduction]: Checked pairs total: 5734 [2020-10-21 21:38:35,077 INFO L133 LiptonReduction]: Total number of compositions: 63 [2020-10-21 21:38:35,084 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 51 transitions, 107 flow [2020-10-21 21:38:35,108 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 227 states. [2020-10-21 21:38:35,111 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states. [2020-10-21 21:38:35,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 21:38:35,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:38:35,122 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:38:35,123 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:38:35,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:38:35,130 INFO L82 PathProgramCache]: Analyzing trace with hash 556857473, now seen corresponding path program 1 times [2020-10-21 21:38:35,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:38:35,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881623133] [2020-10-21 21:38:35,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:38:35,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:38:35,317 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 21:38:35,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881623133] [2020-10-21 21:38:35,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:38:35,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 21:38:35,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866569664] [2020-10-21 21:38:35,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-21 21:38:35,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:38:35,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-21 21:38:35,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-21 21:38:35,341 INFO L87 Difference]: Start difference. First operand 227 states. Second operand 2 states. [2020-10-21 21:38:35,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:38:35,371 INFO L93 Difference]: Finished difference Result 198 states and 534 transitions. [2020-10-21 21:38:35,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-21 21:38:35,373 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-10-21 21:38:35,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:38:35,389 INFO L225 Difference]: With dead ends: 198 [2020-10-21 21:38:35,389 INFO L226 Difference]: Without dead ends: 198 [2020-10-21 21:38:35,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-21 21:38:35,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-21 21:38:35,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-10-21 21:38:35,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-10-21 21:38:35,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 534 transitions. [2020-10-21 21:38:35,472 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 534 transitions. Word has length 9 [2020-10-21 21:38:35,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:38:35,473 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 534 transitions. [2020-10-21 21:38:35,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-21 21:38:35,473 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 534 transitions. [2020-10-21 21:38:35,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-21 21:38:35,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:38:35,475 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:38:35,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-21 21:38:35,475 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:38:35,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:38:35,476 INFO L82 PathProgramCache]: Analyzing trace with hash -265870444, now seen corresponding path program 1 times [2020-10-21 21:38:35,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:38:35,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884098042] [2020-10-21 21:38:35,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:38:35,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:38:35,549 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 21:38:35,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884098042] [2020-10-21 21:38:35,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:38:35,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 21:38:35,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285450933] [2020-10-21 21:38:35,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 21:38:35,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:38:35,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 21:38:35,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 21:38:35,553 INFO L87 Difference]: Start difference. First operand 198 states and 534 transitions. Second operand 3 states. [2020-10-21 21:38:35,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:38:35,591 INFO L93 Difference]: Finished difference Result 362 states and 979 transitions. [2020-10-21 21:38:35,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 21:38:35,592 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-21 21:38:35,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:38:35,596 INFO L225 Difference]: With dead ends: 362 [2020-10-21 21:38:35,597 INFO L226 Difference]: Without dead ends: 362 [2020-10-21 21:38:35,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 21:38:35,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-10-21 21:38:35,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 221. [2020-10-21 21:38:35,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-10-21 21:38:35,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 589 transitions. [2020-10-21 21:38:35,627 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 589 transitions. Word has length 11 [2020-10-21 21:38:35,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:38:35,630 INFO L481 AbstractCegarLoop]: Abstraction has 221 states and 589 transitions. [2020-10-21 21:38:35,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 21:38:35,631 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 589 transitions. [2020-10-21 21:38:35,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-21 21:38:35,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:38:35,632 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:38:35,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-21 21:38:35,633 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:38:35,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:38:35,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1897023782, now seen corresponding path program 1 times [2020-10-21 21:38:35,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:38:35,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587621084] [2020-10-21 21:38:35,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:38:35,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:38:35,729 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 21:38:35,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587621084] [2020-10-21 21:38:35,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:38:35,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 21:38:35,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126697360] [2020-10-21 21:38:35,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 21:38:35,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:38:35,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 21:38:35,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 21:38:35,732 INFO L87 Difference]: Start difference. First operand 221 states and 589 transitions. Second operand 3 states. [2020-10-21 21:38:35,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:38:35,753 INFO L93 Difference]: Finished difference Result 348 states and 934 transitions. [2020-10-21 21:38:35,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 21:38:35,753 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-21 21:38:35,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:38:35,757 INFO L225 Difference]: With dead ends: 348 [2020-10-21 21:38:35,758 INFO L226 Difference]: Without dead ends: 348 [2020-10-21 21:38:35,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 21:38:35,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-10-21 21:38:35,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 218. [2020-10-21 21:38:35,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-21 21:38:35,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 560 transitions. [2020-10-21 21:38:35,777 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 560 transitions. Word has length 11 [2020-10-21 21:38:35,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:38:35,777 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 560 transitions. [2020-10-21 21:38:35,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 21:38:35,778 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 560 transitions. [2020-10-21 21:38:35,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 21:38:35,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:38:35,780 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:38:35,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-21 21:38:35,781 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:38:35,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:38:35,781 INFO L82 PathProgramCache]: Analyzing trace with hash -293575379, now seen corresponding path program 1 times [2020-10-21 21:38:35,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:38:35,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114767480] [2020-10-21 21:38:35,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:38:35,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:38:35,847 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 21:38:35,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114767480] [2020-10-21 21:38:35,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:38:35,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 21:38:35,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903750780] [2020-10-21 21:38:35,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 21:38:35,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:38:35,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 21:38:35,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 21:38:35,850 INFO L87 Difference]: Start difference. First operand 218 states and 560 transitions. Second operand 3 states. [2020-10-21 21:38:35,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:38:35,890 INFO L93 Difference]: Finished difference Result 234 states and 577 transitions. [2020-10-21 21:38:35,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 21:38:35,891 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-21 21:38:35,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:38:35,893 INFO L225 Difference]: With dead ends: 234 [2020-10-21 21:38:35,894 INFO L226 Difference]: Without dead ends: 234 [2020-10-21 21:38:35,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 21:38:35,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-10-21 21:38:35,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 230. [2020-10-21 21:38:35,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-21 21:38:35,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 569 transitions. [2020-10-21 21:38:35,908 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 569 transitions. Word has length 19 [2020-10-21 21:38:35,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:38:35,909 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 569 transitions. [2020-10-21 21:38:35,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 21:38:35,910 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 569 transitions. [2020-10-21 21:38:35,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 21:38:35,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:38:35,915 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:38:35,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-21 21:38:35,916 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:38:35,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:38:35,916 INFO L82 PathProgramCache]: Analyzing trace with hash -369860675, now seen corresponding path program 2 times [2020-10-21 21:38:35,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:38:35,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279289147] [2020-10-21 21:38:35,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:38:35,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:38:35,960 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 21:38:35,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279289147] [2020-10-21 21:38:35,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:38:35,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 21:38:35,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521631010] [2020-10-21 21:38:35,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 21:38:35,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:38:35,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 21:38:35,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 21:38:35,965 INFO L87 Difference]: Start difference. First operand 230 states and 569 transitions. Second operand 3 states. [2020-10-21 21:38:36,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:38:36,040 INFO L93 Difference]: Finished difference Result 228 states and 553 transitions. [2020-10-21 21:38:36,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 21:38:36,041 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-21 21:38:36,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:38:36,043 INFO L225 Difference]: With dead ends: 228 [2020-10-21 21:38:36,043 INFO L226 Difference]: Without dead ends: 228 [2020-10-21 21:38:36,044 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 21:38:36,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-21 21:38:36,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2020-10-21 21:38:36,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-10-21 21:38:36,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 553 transitions. [2020-10-21 21:38:36,054 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 553 transitions. Word has length 19 [2020-10-21 21:38:36,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:38:36,054 INFO L481 AbstractCegarLoop]: Abstraction has 228 states and 553 transitions. [2020-10-21 21:38:36,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 21:38:36,054 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 553 transitions. [2020-10-21 21:38:36,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 21:38:36,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:38:36,057 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:38:36,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-21 21:38:36,057 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:38:36,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:38:36,058 INFO L82 PathProgramCache]: Analyzing trace with hash -520856579, now seen corresponding path program 3 times [2020-10-21 21:38:36,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:38:36,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691897110] [2020-10-21 21:38:36,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:38:36,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:38:36,087 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 21:38:36,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691897110] [2020-10-21 21:38:36,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:38:36,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 21:38:36,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129169736] [2020-10-21 21:38:36,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 21:38:36,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:38:36,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 21:38:36,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 21:38:36,090 INFO L87 Difference]: Start difference. First operand 228 states and 553 transitions. Second operand 3 states. [2020-10-21 21:38:36,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:38:36,132 INFO L93 Difference]: Finished difference Result 194 states and 463 transitions. [2020-10-21 21:38:36,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 21:38:36,133 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-21 21:38:36,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:38:36,136 INFO L225 Difference]: With dead ends: 194 [2020-10-21 21:38:36,136 INFO L226 Difference]: Without dead ends: 0 [2020-10-21 21:38:36,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 21:38:36,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-21 21:38:36,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-21 21:38:36,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-21 21:38:36,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-21 21:38:36,138 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-10-21 21:38:36,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:38:36,138 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-21 21:38:36,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 21:38:36,138 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-21 21:38:36,138 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-21 21:38:36,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-21 21:38:36,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 09:38:36 BasicIcfg [2020-10-21 21:38:36,143 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-21 21:38:36,145 INFO L168 Benchmark]: Toolchain (without parser) took 3705.54 ms. Allocated memory was 139.5 MB in the beginning and 248.0 MB in the end (delta: 108.5 MB). Free memory was 99.9 MB in the beginning and 150.2 MB in the end (delta: -50.3 MB). Peak memory consumption was 58.2 MB. Max. memory is 7.1 GB. [2020-10-21 21:38:36,146 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-21 21:38:36,147 INFO L168 Benchmark]: CACSL2BoogieTranslator took 666.19 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 99.0 MB in the beginning and 159.7 MB in the end (delta: -60.6 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-10-21 21:38:36,148 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.47 ms. Allocated memory is still 202.4 MB. Free memory was 159.7 MB in the beginning and 157.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-10-21 21:38:36,149 INFO L168 Benchmark]: Boogie Preprocessor took 46.87 ms. Allocated memory is still 202.4 MB. Free memory was 157.0 MB in the beginning and 155.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-21 21:38:36,149 INFO L168 Benchmark]: RCFGBuilder took 482.04 ms. Allocated memory is still 202.4 MB. Free memory was 155.7 MB in the beginning and 131.6 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-10-21 21:38:36,150 INFO L168 Benchmark]: TraceAbstraction took 2433.65 ms. Allocated memory was 202.4 MB in the beginning and 248.0 MB in the end (delta: 45.6 MB). Free memory was 131.6 MB in the beginning and 150.2 MB in the end (delta: -18.6 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2020-10-21 21:38:36,155 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 666.19 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 99.0 MB in the beginning and 159.7 MB in the end (delta: -60.6 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 66.47 ms. Allocated memory is still 202.4 MB. Free memory was 159.7 MB in the beginning and 157.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 46.87 ms. Allocated memory is still 202.4 MB. Free memory was 157.0 MB in the beginning and 155.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 482.04 ms. Allocated memory is still 202.4 MB. Free memory was 155.7 MB in the beginning and 131.6 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2433.65 ms. Allocated memory was 202.4 MB in the beginning and 248.0 MB in the end (delta: 45.6 MB). Free memory was 131.6 MB in the beginning and 150.2 MB in the end (delta: -18.6 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1482 VarBasedMoverChecksPositive, 38 VarBasedMoverChecksNegative, 16 SemBasedMoverChecksPositive, 22 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 107 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.2s, 74 PlacesBefore, 35 PlacesAfterwards, 96 TransitionsBefore, 51 TransitionsAfterwards, 3150 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 16 ConcurrentYvCompositions, 6 ChoiceCompositions, 63 TotalNumberOfCompositions, 5734 MoverChecksTotal - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 71 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.2s, HoareTripleCheckerStatistics: 314 SDtfs, 133 SDslu, 117 SDs, 0 SdLazy, 76 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=230occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 275 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 1600 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 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 proved your program to be correct! Received shutdown request...