/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-McrAutomaton-SP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe036_power.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-22 02:22:42,138 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-22 02:22:42,140 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-22 02:22:42,165 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-22 02:22:42,165 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-22 02:22:42,166 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-22 02:22:42,168 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-22 02:22:42,169 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-22 02:22:42,171 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-22 02:22:42,172 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-22 02:22:42,173 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-22 02:22:42,174 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-22 02:22:42,174 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-22 02:22:42,175 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-22 02:22:42,176 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-22 02:22:42,177 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-22 02:22:42,178 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-22 02:22:42,179 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-22 02:22:42,181 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-22 02:22:42,183 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-22 02:22:42,184 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-22 02:22:42,185 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-22 02:22:42,187 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-22 02:22:42,188 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-22 02:22:42,190 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-22 02:22:42,190 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-22 02:22:42,191 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-22 02:22:42,192 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-22 02:22:42,192 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-22 02:22:42,193 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-22 02:22:42,193 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-22 02:22:42,194 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-22 02:22:42,195 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-22 02:22:42,195 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-22 02:22:42,196 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-22 02:22:42,197 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-22 02:22:42,197 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-22 02:22:42,197 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-22 02:22:42,198 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-22 02:22:42,199 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-22 02:22:42,199 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-22 02:22:42,200 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-McrAutomaton-SP.epf [2020-10-22 02:22:42,234 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-22 02:22:42,234 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-22 02:22:42,235 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-22 02:22:42,236 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-22 02:22:42,236 INFO L138 SettingsManager]: * Use SBE=true [2020-10-22 02:22:42,236 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-22 02:22:42,236 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-22 02:22:42,236 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-22 02:22:42,237 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-22 02:22:42,237 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-22 02:22:42,238 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-22 02:22:42,238 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-22 02:22:42,239 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-22 02:22:42,239 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-22 02:22:42,239 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-22 02:22:42,239 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-22 02:22:42,239 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-22 02:22:42,240 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-22 02:22:42,240 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-22 02:22:42,241 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-22 02:22:42,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-22 02:22:42,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 02:22:42,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-22 02:22:42,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-22 02:22:42,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-22 02:22:42,242 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-22 02:22:42,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-22 02:22:42,243 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-22 02:22:42,243 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-22 02:22:42,243 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-22 02:22:42,243 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-22 02:22:42,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-22 02:22:42,593 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-22 02:22:42,597 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-22 02:22:42,601 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-22 02:22:42,601 INFO L275 PluginConnector]: CDTParser initialized [2020-10-22 02:22:42,602 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe036_power.oepc.i [2020-10-22 02:22:42,685 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f597481c/850bb0b237654dd5a95448eed9d51007/FLAG7e1bd9489 [2020-10-22 02:22:43,240 INFO L306 CDTParser]: Found 1 translation units. [2020-10-22 02:22:43,240 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe036_power.oepc.i [2020-10-22 02:22:43,255 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f597481c/850bb0b237654dd5a95448eed9d51007/FLAG7e1bd9489 [2020-10-22 02:22:43,521 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f597481c/850bb0b237654dd5a95448eed9d51007 [2020-10-22 02:22:43,531 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-22 02:22:43,538 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-22 02:22:43,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-22 02:22:43,540 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-22 02:22:43,543 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-22 02:22:43,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 02:22:43" (1/1) ... [2020-10-22 02:22:43,547 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@104a20b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:22:43, skipping insertion in model container [2020-10-22 02:22:43,547 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 02:22:43" (1/1) ... [2020-10-22 02:22:43,555 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-22 02:22:43,600 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-22 02:22:44,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 02:22:44,079 INFO L203 MainTranslator]: Completed pre-run [2020-10-22 02:22:44,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 02:22:44,201 INFO L208 MainTranslator]: Completed translation [2020-10-22 02:22:44,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:22:44 WrapperNode [2020-10-22 02:22:44,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-22 02:22:44,203 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-22 02:22:44,203 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-22 02:22:44,203 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-22 02:22:44,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:22:44" (1/1) ... [2020-10-22 02:22:44,232 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:22:44" (1/1) ... [2020-10-22 02:22:44,253 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-22 02:22:44,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-22 02:22:44,253 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-22 02:22:44,253 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-22 02:22:44,263 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:22:44" (1/1) ... [2020-10-22 02:22:44,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:22:44" (1/1) ... [2020-10-22 02:22:44,266 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:22:44" (1/1) ... [2020-10-22 02:22:44,266 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:22:44" (1/1) ... [2020-10-22 02:22:44,273 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:22:44" (1/1) ... [2020-10-22 02:22:44,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:22:44" (1/1) ... [2020-10-22 02:22:44,278 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:22:44" (1/1) ... [2020-10-22 02:22:44,281 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-22 02:22:44,281 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-22 02:22:44,281 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-22 02:22:44,282 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-22 02:22:44,282 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:22:44" (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 [2020-10-22 02:22:44,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-22 02:22:44,352 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-22 02:22:44,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-22 02:22:44,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-22 02:22:44,352 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-22 02:22:44,352 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-22 02:22:44,352 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-22 02:22:44,353 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-22 02:22:44,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-22 02:22:44,353 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-22 02:22:44,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-22 02:22:44,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-22 02:22:44,355 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-22 02:22:44,700 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-22 02:22:44,700 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-22 02:22:44,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 02:22:44 BoogieIcfgContainer [2020-10-22 02:22:44,702 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-22 02:22:44,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-22 02:22:44,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-22 02:22:44,708 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-22 02:22:44,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 02:22:43" (1/3) ... [2020-10-22 02:22:44,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a820203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 02:22:44, skipping insertion in model container [2020-10-22 02:22:44,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:22:44" (2/3) ... [2020-10-22 02:22:44,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a820203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 02:22:44, skipping insertion in model container [2020-10-22 02:22:44,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 02:22:44" (3/3) ... [2020-10-22 02:22:44,711 INFO L111 eAbstractionObserver]: Analyzing ICFG safe036_power.oepc.i [2020-10-22 02:22:44,723 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-22 02:22:44,724 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-22 02:22:44,732 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-22 02:22:44,733 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-22 02:22:44,761 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:22:44,761 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:22:44,761 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:22:44,762 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:22:44,763 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:22:44,763 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:22:44,764 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:22:44,764 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:22:44,764 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:22:44,764 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:22:44,765 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:22:44,765 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:22:44,769 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:22:44,769 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:22:44,770 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:22:44,770 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:22:44,777 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:22:44,777 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:22:44,778 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:22:44,778 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:22:44,780 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-22 02:22:44,791 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-22 02:22:44,809 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 02:22:44,810 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 02:22:44,810 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 02:22:44,810 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 02:22:44,810 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 02:22:44,810 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 02:22:44,811 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 02:22:44,811 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 02:22:44,823 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 02:22:44,823 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 65 transitions, 140 flow [2020-10-22 02:22:44,825 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 65 transitions, 140 flow [2020-10-22 02:22:44,827 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 69 places, 65 transitions, 140 flow [2020-10-22 02:22:44,879 INFO L129 PetriNetUnfolder]: 3/63 cut-off events. [2020-10-22 02:22:44,879 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-22 02:22:44,884 INFO L80 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 63 events. 3/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2020-10-22 02:22:44,886 INFO L116 LiptonReduction]: Number of co-enabled transitions 792 [2020-10-22 02:22:46,270 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-10-22 02:22:46,382 INFO L131 LiptonReduction]: Checked pairs total: 1418 [2020-10-22 02:22:46,382 INFO L133 LiptonReduction]: Total number of compositions: 63 [2020-10-22 02:22:46,389 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 23 places, 17 transitions, 44 flow [2020-10-22 02:22:46,404 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 90 states. [2020-10-22 02:22:46,406 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-10-22 02:22:46,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-22 02:22:46,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:22:46,415 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-22 02:22:46,415 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:22:46,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:22:46,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1338798449, now seen corresponding path program 1 times [2020-10-22 02:22:46,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:22:46,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334972791] [2020-10-22 02:22:46,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:22:46,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:22:46,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:22:46,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334972791] [2020-10-22 02:22:46,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:22:46,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 02:22:46,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [686285359] [2020-10-22 02:22:46,626 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:22:46,629 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:22:46,645 INFO L252 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-10-22 02:22:46,645 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:22:46,652 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:22:46,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-22 02:22:46,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:22:46,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-22 02:22:46,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-22 02:22:46,673 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 2 states. [2020-10-22 02:22:46,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:22:46,691 INFO L93 Difference]: Finished difference Result 90 states and 200 transitions. [2020-10-22 02:22:46,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-22 02:22:46,692 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-10-22 02:22:46,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:22:46,708 INFO L225 Difference]: With dead ends: 90 [2020-10-22 02:22:46,709 INFO L226 Difference]: Without dead ends: 74 [2020-10-22 02:22:46,710 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 [2020-10-22 02:22:46,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-22 02:22:46,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-10-22 02:22:46,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-22 02:22:46,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 160 transitions. [2020-10-22 02:22:46,768 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 160 transitions. Word has length 6 [2020-10-22 02:22:46,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:22:46,768 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 160 transitions. [2020-10-22 02:22:46,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-22 02:22:46,769 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 160 transitions. [2020-10-22 02:22:46,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-22 02:22:46,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:22:46,770 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:22:46,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-22 02:22:46,770 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:22:46,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:22:46,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1446900907, now seen corresponding path program 1 times [2020-10-22 02:22:46,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:22:46,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784690280] [2020-10-22 02:22:46,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:22:46,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:22:46,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:22:46,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784690280] [2020-10-22 02:22:46,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:22:46,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 02:22:46,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [644466694] [2020-10-22 02:22:46,929 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:22:46,929 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:22:46,933 INFO L252 McrAutomatonBuilder]: Finished intersection with 8 states and 7 transitions. [2020-10-22 02:22:46,933 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:22:46,933 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:22:46,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 02:22:46,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:22:46,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 02:22:46,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 02:22:46,939 INFO L87 Difference]: Start difference. First operand 74 states and 160 transitions. Second operand 4 states. [2020-10-22 02:22:46,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:22:46,999 INFO L93 Difference]: Finished difference Result 63 states and 112 transitions. [2020-10-22 02:22:47,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 02:22:47,002 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-22 02:22:47,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:22:47,003 INFO L225 Difference]: With dead ends: 63 [2020-10-22 02:22:47,003 INFO L226 Difference]: Without dead ends: 47 [2020-10-22 02:22:47,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:22:47,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-22 02:22:47,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-22 02:22:47,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-22 02:22:47,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 79 transitions. [2020-10-22 02:22:47,016 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 79 transitions. Word has length 7 [2020-10-22 02:22:47,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:22:47,016 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 79 transitions. [2020-10-22 02:22:47,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 02:22:47,017 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 79 transitions. [2020-10-22 02:22:47,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-22 02:22:47,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:22:47,018 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:22:47,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-22 02:22:47,021 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:22:47,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:22:47,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1074461755, now seen corresponding path program 1 times [2020-10-22 02:22:47,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:22:47,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027379470] [2020-10-22 02:22:47,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:22:47,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:22:47,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:22:47,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027379470] [2020-10-22 02:22:47,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:22:47,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-22 02:22:47,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [863429272] [2020-10-22 02:22:47,098 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:22:47,098 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:22:47,101 INFO L252 McrAutomatonBuilder]: Finished intersection with 17 states and 22 transitions. [2020-10-22 02:22:47,101 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:22:47,168 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [660#(<= ~__unbuffered_cnt~0 0)] [2020-10-22 02:22:47,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-22 02:22:47,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:22:47,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-22 02:22:47,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-22 02:22:47,170 INFO L87 Difference]: Start difference. First operand 47 states and 79 transitions. Second operand 6 states. [2020-10-22 02:22:47,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:22:47,209 INFO L93 Difference]: Finished difference Result 36 states and 55 transitions. [2020-10-22 02:22:47,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-22 02:22:47,209 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-22 02:22:47,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:22:47,210 INFO L225 Difference]: With dead ends: 36 [2020-10-22 02:22:47,210 INFO L226 Difference]: Without dead ends: 29 [2020-10-22 02:22:47,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-22 02:22:47,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-22 02:22:47,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-22 02:22:47,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-22 02:22:47,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 43 transitions. [2020-10-22 02:22:47,214 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 43 transitions. Word has length 10 [2020-10-22 02:22:47,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:22:47,215 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 43 transitions. [2020-10-22 02:22:47,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-22 02:22:47,215 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 43 transitions. [2020-10-22 02:22:47,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 02:22:47,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:22:47,216 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:22:47,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-22 02:22:47,216 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:22:47,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:22:47,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1774648449, now seen corresponding path program 1 times [2020-10-22 02:22:47,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:22:47,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707895574] [2020-10-22 02:22:47,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:22:47,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:22:47,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:22:47,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707895574] [2020-10-22 02:22:47,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:22:47,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-22 02:22:47,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [698830196] [2020-10-22 02:22:47,292 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:22:47,292 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:22:47,294 INFO L252 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-10-22 02:22:47,294 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:22:47,361 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:22:47,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 02:22:47,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:22:47,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 02:22:47,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:22:47,362 INFO L87 Difference]: Start difference. First operand 29 states and 43 transitions. Second operand 5 states. [2020-10-22 02:22:47,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:22:47,391 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2020-10-22 02:22:47,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 02:22:47,391 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-22 02:22:47,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:22:47,392 INFO L225 Difference]: With dead ends: 37 [2020-10-22 02:22:47,392 INFO L226 Difference]: Without dead ends: 17 [2020-10-22 02:22:47,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-22 02:22:47,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-10-22 02:22:47,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-10-22 02:22:47,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-22 02:22:47,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2020-10-22 02:22:47,395 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 13 [2020-10-22 02:22:47,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:22:47,396 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-10-22 02:22:47,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 02:22:47,396 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-10-22 02:22:47,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 02:22:47,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:22:47,397 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:22:47,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-22 02:22:47,397 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:22:47,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:22:47,398 INFO L82 PathProgramCache]: Analyzing trace with hash 290614237, now seen corresponding path program 2 times [2020-10-22 02:22:47,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:22:47,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461030786] [2020-10-22 02:22:47,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:22:47,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:22:47,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:22:47,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461030786] [2020-10-22 02:22:47,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:22:47,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-22 02:22:47,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [756310719] [2020-10-22 02:22:47,472 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:22:47,473 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:22:47,478 INFO L252 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-10-22 02:22:47,478 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:22:47,478 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:22:47,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 02:22:47,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:22:47,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 02:22:47,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:22:47,480 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 5 states. [2020-10-22 02:22:47,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:22:47,506 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2020-10-22 02:22:47,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 02:22:47,506 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-22 02:22:47,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:22:47,507 INFO L225 Difference]: With dead ends: 16 [2020-10-22 02:22:47,507 INFO L226 Difference]: Without dead ends: 0 [2020-10-22 02:22:47,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-22 02:22:47,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-22 02:22:47,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-22 02:22:47,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-22 02:22:47,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-22 02:22:47,508 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-10-22 02:22:47,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:22:47,509 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-22 02:22:47,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 02:22:47,509 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-22 02:22:47,509 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-22 02:22:47,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-22 02:22:47,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 02:22:47 BasicIcfg [2020-10-22 02:22:47,513 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-22 02:22:47,516 INFO L168 Benchmark]: Toolchain (without parser) took 3982.29 ms. Allocated memory was 138.9 MB in the beginning and 250.1 MB in the end (delta: 111.1 MB). Free memory was 98.7 MB in the beginning and 104.3 MB in the end (delta: -5.6 MB). Peak memory consumption was 105.6 MB. Max. memory is 7.1 GB. [2020-10-22 02:22:47,517 INFO L168 Benchmark]: CDTParser took 3.30 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-10-22 02:22:47,519 INFO L168 Benchmark]: CACSL2BoogieTranslator took 662.84 ms. Allocated memory was 138.9 MB in the beginning and 199.8 MB in the end (delta: 60.8 MB). Free memory was 97.9 MB in the beginning and 154.9 MB in the end (delta: -57.0 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-10-22 02:22:47,526 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.00 ms. Allocated memory is still 199.8 MB. Free memory was 154.9 MB in the beginning and 152.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-22 02:22:47,527 INFO L168 Benchmark]: Boogie Preprocessor took 27.83 ms. Allocated memory is still 199.8 MB. Free memory was 152.8 MB in the beginning and 151.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-22 02:22:47,528 INFO L168 Benchmark]: RCFGBuilder took 421.20 ms. Allocated memory is still 199.8 MB. Free memory was 151.5 MB in the beginning and 129.3 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-10-22 02:22:47,528 INFO L168 Benchmark]: TraceAbstraction took 2809.61 ms. Allocated memory was 199.8 MB in the beginning and 250.1 MB in the end (delta: 50.3 MB). Free memory was 129.3 MB in the beginning and 104.3 MB in the end (delta: 25.0 MB). Peak memory consumption was 75.3 MB. Max. memory is 7.1 GB. [2020-10-22 02:22:47,542 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 3.30 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 662.84 ms. Allocated memory was 138.9 MB in the beginning and 199.8 MB in the end (delta: 60.8 MB). Free memory was 97.9 MB in the beginning and 154.9 MB in the end (delta: -57.0 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.00 ms. Allocated memory is still 199.8 MB. Free memory was 154.9 MB in the beginning and 152.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.83 ms. Allocated memory is still 199.8 MB. Free memory was 152.8 MB in the beginning and 151.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 421.20 ms. Allocated memory is still 199.8 MB. Free memory was 151.5 MB in the beginning and 129.3 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2809.61 ms. Allocated memory was 199.8 MB in the beginning and 250.1 MB in the end (delta: 50.3 MB). Free memory was 129.3 MB in the beginning and 104.3 MB in the end (delta: 25.0 MB). Peak memory consumption was 75.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 435 VarBasedMoverChecksPositive, 11 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 25 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.5s, 69 PlacesBefore, 23 PlacesAfterwards, 65 TransitionsBefore, 17 TransitionsAfterwards, 792 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 63 TotalNumberOfCompositions, 1418 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 63 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 71 SDtfs, 48 SDslu, 109 SDs, 0 SdLazy, 53 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 1126 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...