/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe032_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-05 23:42:18,151 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-05 23:42:18,154 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-05 23:42:18,189 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-05 23:42:18,189 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-05 23:42:18,197 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-05 23:42:18,200 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-05 23:42:18,203 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-05 23:42:18,205 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-05 23:42:18,208 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-05 23:42:18,209 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-05 23:42:18,210 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-05 23:42:18,210 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-05 23:42:18,212 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-05 23:42:18,214 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-05 23:42:18,215 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-05 23:42:18,217 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-05 23:42:18,218 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-05 23:42:18,220 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-05 23:42:18,227 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-05 23:42:18,229 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-05 23:42:18,230 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-05 23:42:18,230 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-05 23:42:18,231 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-05 23:42:18,243 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-05 23:42:18,243 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-05 23:42:18,243 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-05 23:42:18,249 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-05 23:42:18,249 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-05 23:42:18,250 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-05 23:42:18,250 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-05 23:42:18,251 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-05 23:42:18,252 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-05 23:42:18,252 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-05 23:42:18,253 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-05 23:42:18,253 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-05 23:42:18,254 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-05 23:42:18,257 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-05 23:42:18,258 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-05 23:42:18,258 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-05 23:42:18,260 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-05 23:42:18,261 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-10-05 23:42:18,301 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-05 23:42:18,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-05 23:42:18,303 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-05 23:42:18,303 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-05 23:42:18,303 INFO L138 SettingsManager]: * Use SBE=true [2020-10-05 23:42:18,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-05 23:42:18,304 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-05 23:42:18,304 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-05 23:42:18,304 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-05 23:42:18,304 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-05 23:42:18,304 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-05 23:42:18,305 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-05 23:42:18,305 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-05 23:42:18,306 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-05 23:42:18,307 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-05 23:42:18,307 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-05 23:42:18,308 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-05 23:42:18,308 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-05 23:42:18,308 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-05 23:42:18,308 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-05 23:42:18,308 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-05 23:42:18,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-05 23:42:18,309 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-05 23:42:18,309 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-05 23:42:18,309 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-05 23:42:18,309 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-05 23:42:18,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-05 23:42:18,310 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-05 23:42:18,310 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-05 23:42:18,612 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-05 23:42:18,622 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-05 23:42:18,625 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-05 23:42:18,627 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-05 23:42:18,627 INFO L275 PluginConnector]: CDTParser initialized [2020-10-05 23:42:18,628 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe032_tso.opt.i [2020-10-05 23:42:18,684 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b70b59240/82847b9fc4b149cca36bc5833bed63ee/FLAGd9334cedf [2020-10-05 23:42:19,217 INFO L306 CDTParser]: Found 1 translation units. [2020-10-05 23:42:19,217 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe032_tso.opt.i [2020-10-05 23:42:19,232 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b70b59240/82847b9fc4b149cca36bc5833bed63ee/FLAGd9334cedf [2020-10-05 23:42:19,512 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b70b59240/82847b9fc4b149cca36bc5833bed63ee [2020-10-05 23:42:19,519 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-05 23:42:19,521 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-05 23:42:19,522 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-05 23:42:19,522 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-05 23:42:19,525 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-05 23:42:19,526 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 11:42:19" (1/1) ... [2020-10-05 23:42:19,529 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60f3c623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:42:19, skipping insertion in model container [2020-10-05 23:42:19,529 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 11:42:19" (1/1) ... [2020-10-05 23:42:19,537 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-05 23:42:19,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-05 23:42:19,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 23:42:20,007 INFO L203 MainTranslator]: Completed pre-run [2020-10-05 23:42:20,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 23:42:20,137 INFO L208 MainTranslator]: Completed translation [2020-10-05 23:42:20,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:42:20 WrapperNode [2020-10-05 23:42:20,138 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-05 23:42:20,138 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-05 23:42:20,139 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-05 23:42:20,139 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-05 23:42:20,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:42:20" (1/1) ... [2020-10-05 23:42:20,163 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:42:20" (1/1) ... [2020-10-05 23:42:20,183 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-05 23:42:20,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-05 23:42:20,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-05 23:42:20,183 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-05 23:42:20,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:42:20" (1/1) ... [2020-10-05 23:42:20,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:42:20" (1/1) ... [2020-10-05 23:42:20,193 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:42:20" (1/1) ... [2020-10-05 23:42:20,193 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:42:20" (1/1) ... [2020-10-05 23:42:20,199 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:42:20" (1/1) ... [2020-10-05 23:42:20,201 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:42:20" (1/1) ... [2020-10-05 23:42:20,203 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:42:20" (1/1) ... [2020-10-05 23:42:20,206 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-05 23:42:20,207 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-05 23:42:20,207 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-05 23:42:20,207 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-05 23:42:20,208 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:42:20" (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 [2020-10-05 23:42:20,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-05 23:42:20,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-05 23:42:20,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-05 23:42:20,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-05 23:42:20,261 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-05 23:42:20,261 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-05 23:42:20,261 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-05 23:42:20,261 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-05 23:42:20,262 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-05 23:42:20,262 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-05 23:42:20,263 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-05 23:42:20,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-05 23:42:20,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-05 23:42:20,264 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-05 23:42:20,602 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-05 23:42:20,602 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-05 23:42:20,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 11:42:20 BoogieIcfgContainer [2020-10-05 23:42:20,605 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-05 23:42:20,606 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-05 23:42:20,606 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-05 23:42:20,609 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-05 23:42:20,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.10 11:42:19" (1/3) ... [2020-10-05 23:42:20,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13e1cdba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 11:42:20, skipping insertion in model container [2020-10-05 23:42:20,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:42:20" (2/3) ... [2020-10-05 23:42:20,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13e1cdba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 11:42:20, skipping insertion in model container [2020-10-05 23:42:20,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 11:42:20" (3/3) ... [2020-10-05 23:42:20,613 INFO L109 eAbstractionObserver]: Analyzing ICFG safe032_tso.opt.i [2020-10-05 23:42:20,623 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-05 23:42:20,623 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-05 23:42:20,630 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-05 23:42:20,631 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-05 23:42:20,664 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:42:20,665 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:42:20,665 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:42:20,665 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:42:20,666 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:42:20,666 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:42:20,666 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:42:20,667 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:42:20,667 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:42:20,667 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:42:20,667 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:42:20,668 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:42:20,668 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:42:20,668 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:42:20,669 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:42:20,669 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:42:20,669 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:42:20,670 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:42:20,673 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:42:20,673 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:42:20,674 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:42:20,674 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:42:20,680 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:42:20,680 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:42:20,680 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:42:20,681 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:42:20,684 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:42:20,685 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:42:20,685 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:42:20,685 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:42:20,701 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-05 23:42:20,721 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 23:42:20,721 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 23:42:20,721 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-05 23:42:20,722 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 23:42:20,722 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 23:42:20,722 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 23:42:20,722 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 23:42:20,722 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 23:42:20,737 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-10-05 23:42:20,739 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-05 23:42:20,783 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-05 23:42:20,783 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 23:42:20,788 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-05 23:42:20,790 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-05 23:42:20,810 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-05 23:42:20,810 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 23:42:20,811 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-05 23:42:20,813 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-10-05 23:42:20,814 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-05 23:42:21,886 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2365 [2020-10-05 23:42:21,887 INFO L214 etLargeBlockEncoding]: Total number of compositions: 53 [2020-10-05 23:42:21,890 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-10-05 23:42:21,918 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-10-05 23:42:21,921 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-10-05 23:42:21,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-05 23:42:21,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:42:21,929 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:42:21,929 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:42:21,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:42:21,935 INFO L82 PathProgramCache]: Analyzing trace with hash -589225259, now seen corresponding path program 1 times [2020-10-05 23:42:21,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:42:21,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633680934] [2020-10-05 23:42:21,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:42:22,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:42:22,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:42:22,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633680934] [2020-10-05 23:42:22,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:42:22,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 23:42:22,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922292675] [2020-10-05 23:42:22,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-05 23:42:22,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:42:22,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-05 23:42:22,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-05 23:42:22,147 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-10-05 23:42:22,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:42:22,185 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-10-05 23:42:22,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-05 23:42:22,187 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-05 23:42:22,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:42:22,205 INFO L225 Difference]: With dead ends: 362 [2020-10-05 23:42:22,206 INFO L226 Difference]: Without dead ends: 298 [2020-10-05 23:42:22,207 INFO L675 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 [2020-10-05 23:42:22,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-05 23:42:22,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-10-05 23:42:22,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-05 23:42:22,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-10-05 23:42:22,279 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-10-05 23:42:22,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:42:22,281 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-10-05 23:42:22,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-05 23:42:22,281 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-10-05 23:42:22,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-05 23:42:22,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:42:22,283 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:42:22,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-05 23:42:22,283 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:42:22,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:42:22,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1086118353, now seen corresponding path program 1 times [2020-10-05 23:42:22,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:42:22,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285037137] [2020-10-05 23:42:22,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:42:22,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:42:22,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:42:22,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285037137] [2020-10-05 23:42:22,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:42:22,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 23:42:22,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481901414] [2020-10-05 23:42:22,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:42:22,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:42:22,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:42:22,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:42:22,414 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 3 states. [2020-10-05 23:42:22,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:42:22,430 INFO L93 Difference]: Finished difference Result 217 states and 540 transitions. [2020-10-05 23:42:22,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:42:22,431 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-05 23:42:22,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:42:22,433 INFO L225 Difference]: With dead ends: 217 [2020-10-05 23:42:22,433 INFO L226 Difference]: Without dead ends: 217 [2020-10-05 23:42:22,434 INFO L675 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 [2020-10-05 23:42:22,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-05 23:42:22,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-10-05 23:42:22,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-10-05 23:42:22,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 540 transitions. [2020-10-05 23:42:22,449 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 540 transitions. Word has length 9 [2020-10-05 23:42:22,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:42:22,449 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 540 transitions. [2020-10-05 23:42:22,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:42:22,450 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 540 transitions. [2020-10-05 23:42:22,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:42:22,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:42:22,451 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:42:22,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-05 23:42:22,452 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:42:22,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:42:22,452 INFO L82 PathProgramCache]: Analyzing trace with hash -954674037, now seen corresponding path program 1 times [2020-10-05 23:42:22,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:42:22,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439888540] [2020-10-05 23:42:22,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:42:22,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:42:22,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:42:22,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439888540] [2020-10-05 23:42:22,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:42:22,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:42:22,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845041982] [2020-10-05 23:42:22,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 23:42:22,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:42:22,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 23:42:22,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-05 23:42:22,504 INFO L87 Difference]: Start difference. First operand 217 states and 540 transitions. Second operand 4 states. [2020-10-05 23:42:22,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:42:22,526 INFO L93 Difference]: Finished difference Result 136 states and 297 transitions. [2020-10-05 23:42:22,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 23:42:22,527 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-05 23:42:22,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:42:22,528 INFO L225 Difference]: With dead ends: 136 [2020-10-05 23:42:22,528 INFO L226 Difference]: Without dead ends: 136 [2020-10-05 23:42:22,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-05 23:42:22,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-05 23:42:22,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-10-05 23:42:22,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-05 23:42:22,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 297 transitions. [2020-10-05 23:42:22,536 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 297 transitions. Word has length 12 [2020-10-05 23:42:22,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:42:22,536 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 297 transitions. [2020-10-05 23:42:22,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 23:42:22,537 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 297 transitions. [2020-10-05 23:42:22,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-05 23:42:22,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:42:22,538 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:42:22,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-05 23:42:22,539 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:42:22,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:42:22,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1044268816, now seen corresponding path program 1 times [2020-10-05 23:42:22,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:42:22,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296400811] [2020-10-05 23:42:22,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:42:22,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:42:22,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:42:22,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296400811] [2020-10-05 23:42:22,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:42:22,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-05 23:42:22,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336919194] [2020-10-05 23:42:22,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 23:42:22,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:42:22,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 23:42:22,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-05 23:42:22,594 INFO L87 Difference]: Start difference. First operand 136 states and 297 transitions. Second operand 5 states. [2020-10-05 23:42:22,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:42:22,627 INFO L93 Difference]: Finished difference Result 109 states and 243 transitions. [2020-10-05 23:42:22,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 23:42:22,628 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-05 23:42:22,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:42:22,629 INFO L225 Difference]: With dead ends: 109 [2020-10-05 23:42:22,629 INFO L226 Difference]: Without dead ends: 109 [2020-10-05 23:42:22,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-05 23:42:22,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-05 23:42:22,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-10-05 23:42:22,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-05 23:42:22,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 243 transitions. [2020-10-05 23:42:22,634 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 243 transitions. Word has length 15 [2020-10-05 23:42:22,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:42:22,635 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 243 transitions. [2020-10-05 23:42:22,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 23:42:22,635 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 243 transitions. [2020-10-05 23:42:22,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-05 23:42:22,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:42:22,636 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:42:22,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-05 23:42:22,637 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:42:22,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:42:22,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1052552835, now seen corresponding path program 1 times [2020-10-05 23:42:22,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:42:22,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739464369] [2020-10-05 23:42:22,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:42:22,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:42:22,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:42:22,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739464369] [2020-10-05 23:42:22,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:42:22,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-05 23:42:22,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752015091] [2020-10-05 23:42:22,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 23:42:22,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:42:22,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 23:42:22,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-05 23:42:22,705 INFO L87 Difference]: Start difference. First operand 109 states and 243 transitions. Second operand 5 states. [2020-10-05 23:42:22,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:42:22,757 INFO L93 Difference]: Finished difference Result 174 states and 369 transitions. [2020-10-05 23:42:22,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 23:42:22,757 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-05 23:42:22,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:42:22,759 INFO L225 Difference]: With dead ends: 174 [2020-10-05 23:42:22,759 INFO L226 Difference]: Without dead ends: 136 [2020-10-05 23:42:22,759 INFO L675 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 [2020-10-05 23:42:22,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-05 23:42:22,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 109. [2020-10-05 23:42:22,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-05 23:42:22,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 239 transitions. [2020-10-05 23:42:22,764 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 239 transitions. Word has length 18 [2020-10-05 23:42:22,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:42:22,765 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 239 transitions. [2020-10-05 23:42:22,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 23:42:22,765 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 239 transitions. [2020-10-05 23:42:22,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-05 23:42:22,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:42:22,766 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:42:22,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-05 23:42:22,767 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:42:22,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:42:22,767 INFO L82 PathProgramCache]: Analyzing trace with hash 645557555, now seen corresponding path program 2 times [2020-10-05 23:42:22,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:42:22,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488238777] [2020-10-05 23:42:22,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:42:22,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:42:22,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:42:22,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488238777] [2020-10-05 23:42:22,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:42:22,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:42:22,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752114293] [2020-10-05 23:42:22,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 23:42:22,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:42:22,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 23:42:22,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 23:42:22,813 INFO L87 Difference]: Start difference. First operand 109 states and 239 transitions. Second operand 4 states. [2020-10-05 23:42:22,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:42:22,837 INFO L93 Difference]: Finished difference Result 135 states and 287 transitions. [2020-10-05 23:42:22,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 23:42:22,838 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-05 23:42:22,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:42:22,839 INFO L225 Difference]: With dead ends: 135 [2020-10-05 23:42:22,839 INFO L226 Difference]: Without dead ends: 55 [2020-10-05 23:42:22,839 INFO L675 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 [2020-10-05 23:42:22,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-05 23:42:22,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-05 23:42:22,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-05 23:42:22,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 98 transitions. [2020-10-05 23:42:22,842 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 98 transitions. Word has length 18 [2020-10-05 23:42:22,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:42:22,843 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 98 transitions. [2020-10-05 23:42:22,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 23:42:22,843 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 98 transitions. [2020-10-05 23:42:22,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-05 23:42:22,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:42:22,844 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:42:22,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-05 23:42:22,844 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:42:22,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:42:22,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1837863529, now seen corresponding path program 3 times [2020-10-05 23:42:22,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:42:22,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101553490] [2020-10-05 23:42:22,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:42:22,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:42:22,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:42:22,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101553490] [2020-10-05 23:42:22,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:42:22,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-05 23:42:22,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516280870] [2020-10-05 23:42:22,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 23:42:22,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:42:22,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 23:42:22,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-05 23:42:22,894 INFO L87 Difference]: Start difference. First operand 55 states and 98 transitions. Second operand 5 states. [2020-10-05 23:42:22,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:42:22,942 INFO L93 Difference]: Finished difference Result 89 states and 153 transitions. [2020-10-05 23:42:22,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-05 23:42:22,943 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-05 23:42:22,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:42:22,943 INFO L225 Difference]: With dead ends: 89 [2020-10-05 23:42:22,943 INFO L226 Difference]: Without dead ends: 42 [2020-10-05 23:42:22,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-05 23:42:22,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-05 23:42:22,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-05 23:42:22,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-05 23:42:22,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 71 transitions. [2020-10-05 23:42:22,946 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 71 transitions. Word has length 18 [2020-10-05 23:42:22,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:42:22,946 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 71 transitions. [2020-10-05 23:42:22,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 23:42:22,947 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 71 transitions. [2020-10-05 23:42:22,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-05 23:42:22,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:42:22,947 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:42:22,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-05 23:42:22,948 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:42:22,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:42:22,948 INFO L82 PathProgramCache]: Analyzing trace with hash 784811111, now seen corresponding path program 4 times [2020-10-05 23:42:22,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:42:22,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923408306] [2020-10-05 23:42:22,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:42:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:42:23,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:42:23,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923408306] [2020-10-05 23:42:23,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:42:23,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-05 23:42:23,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433875773] [2020-10-05 23:42:23,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 23:42:23,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:42:23,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 23:42:23,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-05 23:42:23,021 INFO L87 Difference]: Start difference. First operand 42 states and 71 transitions. Second operand 5 states. [2020-10-05 23:42:23,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:42:23,056 INFO L93 Difference]: Finished difference Result 41 states and 70 transitions. [2020-10-05 23:42:23,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 23:42:23,057 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-05 23:42:23,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:42:23,057 INFO L225 Difference]: With dead ends: 41 [2020-10-05 23:42:23,057 INFO L226 Difference]: Without dead ends: 0 [2020-10-05 23:42:23,058 INFO L675 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 [2020-10-05 23:42:23,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-05 23:42:23,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-05 23:42:23,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-05 23:42:23,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-05 23:42:23,059 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-05 23:42:23,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:42:23,059 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-05 23:42:23,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 23:42:23,059 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-05 23:42:23,059 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-05 23:42:23,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-05 23:42:23,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.10 11:42:23 BasicIcfg [2020-10-05 23:42:23,064 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-05 23:42:23,066 INFO L168 Benchmark]: Toolchain (without parser) took 3544.66 ms. Allocated memory was 149.4 MB in the beginning and 244.3 MB in the end (delta: 94.9 MB). Free memory was 103.1 MB in the beginning and 200.4 MB in the end (delta: -97.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-05 23:42:23,067 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 149.4 MB. Free memory was 122.8 MB in the beginning and 122.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-05 23:42:23,068 INFO L168 Benchmark]: CACSL2BoogieTranslator took 616.41 ms. Allocated memory was 149.4 MB in the beginning and 205.0 MB in the end (delta: 55.6 MB). Free memory was 102.9 MB in the beginning and 161.8 MB in the end (delta: -58.9 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2020-10-05 23:42:23,069 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.37 ms. Allocated memory is still 205.0 MB. Free memory was 161.8 MB in the beginning and 159.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-10-05 23:42:23,069 INFO L168 Benchmark]: Boogie Preprocessor took 23.35 ms. Allocated memory is still 205.0 MB. Free memory was 159.3 MB in the beginning and 158.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-05 23:42:23,070 INFO L168 Benchmark]: RCFGBuilder took 397.92 ms. Allocated memory is still 205.0 MB. Free memory was 158.1 MB in the beginning and 135.6 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-10-05 23:42:23,071 INFO L168 Benchmark]: TraceAbstraction took 2457.84 ms. Allocated memory was 205.0 MB in the beginning and 244.3 MB in the end (delta: 39.3 MB). Free memory was 135.6 MB in the beginning and 200.4 MB in the end (delta: -64.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-05 23:42:23,075 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 149.4 MB. Free memory was 122.8 MB in the beginning and 122.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 616.41 ms. Allocated memory was 149.4 MB in the beginning and 205.0 MB in the end (delta: 55.6 MB). Free memory was 102.9 MB in the beginning and 161.8 MB in the end (delta: -58.9 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 44.37 ms. Allocated memory is still 205.0 MB. Free memory was 161.8 MB in the beginning and 159.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.35 ms. Allocated memory is still 205.0 MB. Free memory was 159.3 MB in the beginning and 158.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 397.92 ms. Allocated memory is still 205.0 MB. Free memory was 158.1 MB in the beginning and 135.6 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2457.84 ms. Allocated memory was 205.0 MB in the beginning and 244.3 MB in the end (delta: 39.3 MB). Free memory was 135.6 MB in the beginning and 200.4 MB in the end (delta: -64.8 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.1s, 77 ProgramPointsBefore, 32 ProgramPointsAfterwards, 69 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 620 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2365 CheckedPairsTotal, 53 TotalNumberOfCompositions - PositiveResult [Line: 7]: 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 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.3s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.1s, HoareTripleCheckerStatistics: 153 SDtfs, 96 SDslu, 244 SDs, 0 SdLazy, 87 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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, 8 MinimizatonAttempts, 27 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 3746 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...