/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/thin001_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 15:46:39,095 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 15:46:39,099 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 15:46:39,158 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 15:46:39,159 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 15:46:39,163 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 15:46:39,166 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 15:46:39,170 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 15:46:39,175 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 15:46:39,180 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 15:46:39,182 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 15:46:39,185 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 15:46:39,185 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 15:46:39,188 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 15:46:39,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 15:46:39,192 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 15:46:39,193 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 15:46:39,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 15:46:39,205 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 15:46:39,208 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 15:46:39,216 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 15:46:39,218 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 15:46:39,219 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 15:46:39,222 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 15:46:39,234 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-09 15:46:39,244 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 15:46:39,245 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 15:46:39,247 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 15:46:39,248 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 15:46:39,249 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 15:46:39,249 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 15:46:39,250 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 15:46:39,250 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 15:46:39,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 15:46:39,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 15:46:39,252 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 15:46:39,253 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-WP.epf [2020-11-09 15:46:39,309 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 15:46:39,309 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 15:46:39,313 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 15:46:39,313 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 15:46:39,314 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 15:46:39,314 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 15:46:39,314 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 15:46:39,314 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 15:46:39,314 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 15:46:39,315 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 15:46:39,316 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 15:46:39,316 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 15:46:39,316 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 15:46:39,316 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 15:46:39,316 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 15:46:39,317 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 15:46:39,317 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 15:46:39,317 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 15:46:39,317 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 15:46:39,317 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 15:46:39,318 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 15:46:39,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 15:46:39,318 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 15:46:39,318 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-11-09 15:46:39,318 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 15:46:39,319 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 15:46:39,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 15:46:39,319 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-11-09 15:46:39,319 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-11-09 15:46:39,319 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 15:46:39,319 INFO L138 SettingsManager]: * Interpolant automaton=MCR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 15:46:39,724 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 15:46:39,767 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 15:46:39,771 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 15:46:39,772 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 15:46:39,773 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 15:46:39,774 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin001_pso.oepc.i [2020-11-09 15:46:39,846 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3551356fd/698f5b60f78c44d19acc8c70a3087d86/FLAGcaa9c1183 [2020-11-09 15:46:40,498 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 15:46:40,499 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin001_pso.oepc.i [2020-11-09 15:46:40,520 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3551356fd/698f5b60f78c44d19acc8c70a3087d86/FLAGcaa9c1183 [2020-11-09 15:46:40,769 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3551356fd/698f5b60f78c44d19acc8c70a3087d86 [2020-11-09 15:46:40,773 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 15:46:40,781 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 15:46:40,796 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 15:46:40,796 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 15:46:40,801 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 15:46:40,802 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:46:40" (1/1) ... [2020-11-09 15:46:40,810 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31284587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:46:40, skipping insertion in model container [2020-11-09 15:46:40,810 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:46:40" (1/1) ... [2020-11-09 15:46:40,821 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 15:46:40,900 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 15:46:41,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 15:46:41,274 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 15:46:41,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 15:46:41,453 INFO L208 MainTranslator]: Completed translation [2020-11-09 15:46:41,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:46:41 WrapperNode [2020-11-09 15:46:41,455 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 15:46:41,457 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 15:46:41,457 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 15:46:41,457 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 15:46:41,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:46:41" (1/1) ... [2020-11-09 15:46:41,512 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:46:41" (1/1) ... [2020-11-09 15:46:41,545 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 15:46:41,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 15:46:41,548 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 15:46:41,548 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 15:46:41,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:46:41" (1/1) ... [2020-11-09 15:46:41,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:46:41" (1/1) ... [2020-11-09 15:46:41,575 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:46:41" (1/1) ... [2020-11-09 15:46:41,575 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:46:41" (1/1) ... [2020-11-09 15:46:41,582 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:46:41" (1/1) ... [2020-11-09 15:46:41,584 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:46:41" (1/1) ... [2020-11-09 15:46:41,586 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:46:41" (1/1) ... [2020-11-09 15:46:41,589 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 15:46:41,591 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 15:46:41,591 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 15:46:41,591 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 15:46:41,592 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:46:41" (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 [2020-11-09 15:46:41,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 15:46:41,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 15:46:41,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 15:46:41,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 15:46:41,672 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-09 15:46:41,672 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-09 15:46:41,672 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-09 15:46:41,672 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-09 15:46:41,673 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-09 15:46:41,673 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-09 15:46:41,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 15:46:41,673 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 15:46:41,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 15:46:41,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 15:46:41,693 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-09 15:46:42,311 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 15:46:42,311 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-09 15:46:42,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:46:42 BoogieIcfgContainer [2020-11-09 15:46:42,316 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 15:46:42,319 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 15:46:42,319 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 15:46:42,323 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 15:46:42,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:46:40" (1/3) ... [2020-11-09 15:46:42,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3800d3d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:46:42, skipping insertion in model container [2020-11-09 15:46:42,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:46:41" (2/3) ... [2020-11-09 15:46:42,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3800d3d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:46:42, skipping insertion in model container [2020-11-09 15:46:42,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:46:42" (3/3) ... [2020-11-09 15:46:42,327 INFO L111 eAbstractionObserver]: Analyzing ICFG thin001_pso.oepc.i [2020-11-09 15:46:42,345 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 15:46:42,345 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-09 15:46:42,349 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 15:46:42,351 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 15:46:42,403 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:46:42,403 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:46:42,403 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:46:42,403 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:46:42,404 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:46:42,404 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:46:42,404 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:46:42,404 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:46:42,405 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:46:42,405 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:46:42,405 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:46:42,405 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:46:42,406 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:46:42,406 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:46:42,406 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:46:42,406 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:46:42,407 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:46:42,407 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:46:42,407 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:46:42,407 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:46:42,410 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:46:42,410 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:46:42,410 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:46:42,410 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:46:42,412 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:46:42,413 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:46:42,413 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:46:42,413 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:46:42,414 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:46:42,414 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:46:42,414 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:46:42,415 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:46:42,420 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:46:42,421 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:46:42,422 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:46:42,422 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:46:42,427 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:46:42,427 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:46:42,428 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:46:42,429 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:46:42,439 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:46:42,440 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:46:42,440 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:46:42,440 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:46:42,444 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:46:42,445 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:46:42,446 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:46:42,446 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:46:42,454 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 15:46:42,470 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-09 15:46:42,511 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 15:46:42,511 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 15:46:42,511 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 15:46:42,512 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 15:46:42,512 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 15:46:42,512 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 15:46:42,512 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 15:46:42,512 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 15:46:42,533 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 15:46:42,534 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 80 transitions, 175 flow [2020-11-09 15:46:42,538 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 80 transitions, 175 flow [2020-11-09 15:46:42,541 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 87 places, 80 transitions, 175 flow [2020-11-09 15:46:42,635 INFO L129 PetriNetUnfolder]: 3/77 cut-off events. [2020-11-09 15:46:42,635 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 15:46:42,641 INFO L84 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 77 events. 3/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-09 15:46:42,647 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-09 15:46:45,772 WARN L194 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-11-09 15:46:45,919 WARN L194 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-11-09 15:46:46,895 WARN L194 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-11-09 15:46:47,013 WARN L194 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-11-09 15:46:47,301 WARN L194 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-11-09 15:46:47,441 WARN L194 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-11-09 15:46:47,614 INFO L131 LiptonReduction]: Checked pairs total: 2810 [2020-11-09 15:46:47,615 INFO L133 LiptonReduction]: Total number of compositions: 73 [2020-11-09 15:46:47,621 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-11-09 15:46:47,651 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-11-09 15:46:47,653 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-11-09 15:46:47,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 15:46:47,660 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:46:47,661 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:46:47,662 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:46:47,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:46:47,668 INFO L82 PathProgramCache]: Analyzing trace with hash -853874994, now seen corresponding path program 1 times [2020-11-09 15:46:47,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:46:47,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265718142] [2020-11-09 15:46:47,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:46:47,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:46:47,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:46:47,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265718142] [2020-11-09 15:46:47,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:46:47,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 15:46:47,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [137448059] [2020-11-09 15:46:47,966 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:46:47,968 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:46:47,983 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-11-09 15:46:47,983 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:46:47,988 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:46:47,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 15:46:47,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:46:48,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 15:46:48,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:46:48,007 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-11-09 15:46:48,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:46:48,049 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-11-09 15:46:48,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 15:46:48,053 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-09 15:46:48,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:46:48,082 INFO L225 Difference]: With dead ends: 282 [2020-11-09 15:46:48,082 INFO L226 Difference]: Without dead ends: 218 [2020-11-09 15:46:48,084 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:46:48,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-11-09 15:46:48,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-11-09 15:46:48,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-11-09 15:46:48,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-11-09 15:46:48,206 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-11-09 15:46:48,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:46:48,207 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-11-09 15:46:48,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 15:46:48,208 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-11-09 15:46:48,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 15:46:48,210 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:46:48,211 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:46:48,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 15:46:48,211 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:46:48,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:46:48,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1991399085, now seen corresponding path program 1 times [2020-11-09 15:46:48,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:46:48,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530270188] [2020-11-09 15:46:48,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:46:48,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:46:48,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:46:48,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530270188] [2020-11-09 15:46:48,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:46:48,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:46:48,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [438142490] [2020-11-09 15:46:48,356 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:46:48,357 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:46:48,360 INFO L252 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-11-09 15:46:48,361 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:46:48,441 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:46:48,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:46:48,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:46:48,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:46:48,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:46:48,445 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-11-09 15:46:48,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:46:48,493 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-11-09 15:46:48,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 15:46:48,494 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-09 15:46:48,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:46:48,496 INFO L225 Difference]: With dead ends: 242 [2020-11-09 15:46:48,496 INFO L226 Difference]: Without dead ends: 116 [2020-11-09 15:46:48,498 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:46:48,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-11-09 15:46:48,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-11-09 15:46:48,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-11-09 15:46:48,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 284 transitions. [2020-11-09 15:46:48,515 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 284 transitions. Word has length 9 [2020-11-09 15:46:48,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:46:48,515 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 284 transitions. [2020-11-09 15:46:48,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:46:48,515 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 284 transitions. [2020-11-09 15:46:48,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 15:46:48,517 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:46:48,518 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:46:48,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 15:46:48,519 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:46:48,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:46:48,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1270638185, now seen corresponding path program 1 times [2020-11-09 15:46:48,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:46:48,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372669138] [2020-11-09 15:46:48,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:46:48,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:46:48,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:46:48,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372669138] [2020-11-09 15:46:48,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:46:48,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 15:46:48,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1062097403] [2020-11-09 15:46:48,642 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:46:48,644 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:46:48,648 INFO L252 McrAutomatonBuilder]: Finished intersection with 15 states and 17 transitions. [2020-11-09 15:46:48,648 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:46:48,682 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:46:48,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 15:46:48,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:46:48,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 15:46:48,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:46:48,684 INFO L87 Difference]: Start difference. First operand 116 states and 284 transitions. Second operand 3 states. [2020-11-09 15:46:48,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:46:48,691 INFO L93 Difference]: Finished difference Result 110 states and 265 transitions. [2020-11-09 15:46:48,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 15:46:48,692 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-11-09 15:46:48,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:46:48,693 INFO L225 Difference]: With dead ends: 110 [2020-11-09 15:46:48,693 INFO L226 Difference]: Without dead ends: 110 [2020-11-09 15:46:48,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:46:48,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-11-09 15:46:48,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-11-09 15:46:48,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-11-09 15:46:48,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 265 transitions. [2020-11-09 15:46:48,711 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 265 transitions. Word has length 11 [2020-11-09 15:46:48,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:46:48,711 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 265 transitions. [2020-11-09 15:46:48,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 15:46:48,712 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 265 transitions. [2020-11-09 15:46:48,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 15:46:48,714 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:46:48,715 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:46:48,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 15:46:48,715 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:46:48,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:46:48,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1686690751, now seen corresponding path program 1 times [2020-11-09 15:46:48,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:46:48,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517949571] [2020-11-09 15:46:48,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:46:48,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:46:48,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:46:48,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517949571] [2020-11-09 15:46:48,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:46:48,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:46:48,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1771401338] [2020-11-09 15:46:48,820 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:46:48,824 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:46:48,827 INFO L252 McrAutomatonBuilder]: Finished intersection with 25 states and 39 transitions. [2020-11-09 15:46:48,828 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:46:48,944 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:46:48,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:46:48,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:46:48,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:46:48,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:46:48,946 INFO L87 Difference]: Start difference. First operand 110 states and 265 transitions. Second operand 4 states. [2020-11-09 15:46:48,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:46:48,993 INFO L93 Difference]: Finished difference Result 128 states and 298 transitions. [2020-11-09 15:46:48,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 15:46:48,993 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-09 15:46:48,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:46:48,995 INFO L225 Difference]: With dead ends: 128 [2020-11-09 15:46:48,995 INFO L226 Difference]: Without dead ends: 62 [2020-11-09 15:46:48,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:46:48,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-11-09 15:46:48,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-11-09 15:46:48,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-11-09 15:46:49,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 132 transitions. [2020-11-09 15:46:49,000 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 132 transitions. Word has length 12 [2020-11-09 15:46:49,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:46:49,000 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 132 transitions. [2020-11-09 15:46:49,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:46:49,000 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 132 transitions. [2020-11-09 15:46:49,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 15:46:49,001 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:46:49,001 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:46:49,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 15:46:49,001 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:46:49,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:46:49,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1312508865, now seen corresponding path program 1 times [2020-11-09 15:46:49,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:46:49,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776119489] [2020-11-09 15:46:49,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:46:49,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:46:49,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:46:49,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776119489] [2020-11-09 15:46:49,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:46:49,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:46:49,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [438843692] [2020-11-09 15:46:49,046 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:46:49,048 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:46:49,051 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 23 transitions. [2020-11-09 15:46:49,051 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:46:49,066 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:46:49,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:46:49,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:46:49,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:46:49,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:46:49,068 INFO L87 Difference]: Start difference. First operand 62 states and 132 transitions. Second operand 4 states. [2020-11-09 15:46:49,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:46:49,083 INFO L93 Difference]: Finished difference Result 50 states and 100 transitions. [2020-11-09 15:46:49,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 15:46:49,084 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-09 15:46:49,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:46:49,084 INFO L225 Difference]: With dead ends: 50 [2020-11-09 15:46:49,084 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 15:46:49,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:46:49,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 15:46:49,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 15:46:49,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 15:46:49,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 15:46:49,086 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-11-09 15:46:49,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:46:49,086 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 15:46:49,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:46:49,086 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 15:46:49,086 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 15:46:49,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 15:46:49,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 03:46:49 BasicIcfg [2020-11-09 15:46:49,090 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 15:46:49,092 INFO L168 Benchmark]: Toolchain (without parser) took 8316.53 ms. Allocated memory was 158.3 MB in the beginning and 232.8 MB in the end (delta: 74.4 MB). Free memory was 132.8 MB in the beginning and 196.3 MB in the end (delta: -63.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 8.0 GB. [2020-11-09 15:46:49,093 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 158.3 MB. Free memory is still 131.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 15:46:49,094 INFO L168 Benchmark]: CACSL2BoogieTranslator took 659.86 ms. Allocated memory is still 158.3 MB. Free memory was 131.9 MB in the beginning and 101.2 MB in the end (delta: 30.8 MB). Peak memory consumption was 31.5 MB. Max. memory is 8.0 GB. [2020-11-09 15:46:49,095 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.32 ms. Allocated memory is still 158.3 MB. Free memory was 101.2 MB in the beginning and 99.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 15:46:49,095 INFO L168 Benchmark]: Boogie Preprocessor took 42.15 ms. Allocated memory is still 158.3 MB. Free memory was 99.2 MB in the beginning and 97.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 15:46:49,096 INFO L168 Benchmark]: RCFGBuilder took 725.32 ms. Allocated memory is still 158.3 MB. Free memory was 97.7 MB in the beginning and 122.4 MB in the end (delta: -24.7 MB). Peak memory consumption was 9.0 MB. Max. memory is 8.0 GB. [2020-11-09 15:46:49,097 INFO L168 Benchmark]: TraceAbstraction took 6771.52 ms. Allocated memory was 158.3 MB in the beginning and 232.8 MB in the end (delta: 74.4 MB). Free memory was 121.9 MB in the beginning and 196.3 MB in the end (delta: -74.4 MB). Peak memory consumption was 524.3 kB. Max. memory is 8.0 GB. [2020-11-09 15:46:49,101 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 158.3 MB. Free memory is still 131.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 659.86 ms. Allocated memory is still 158.3 MB. Free memory was 131.9 MB in the beginning and 101.2 MB in the end (delta: 30.8 MB). Peak memory consumption was 31.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 89.32 ms. Allocated memory is still 158.3 MB. Free memory was 101.2 MB in the beginning and 99.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 42.15 ms. Allocated memory is still 158.3 MB. Free memory was 99.2 MB in the beginning and 97.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 725.32 ms. Allocated memory is still 158.3 MB. Free memory was 97.7 MB in the beginning and 122.4 MB in the end (delta: -24.7 MB). Peak memory consumption was 9.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6771.52 ms. Allocated memory was 158.3 MB in the beginning and 232.8 MB in the end (delta: 74.4 MB). Free memory was 121.9 MB in the beginning and 196.3 MB in the end (delta: -74.4 MB). Peak memory consumption was 524.3 kB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 801 VarBasedMoverChecksPositive, 26 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 59 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 5.0s, 87 PlacesBefore, 31 PlacesAfterwards, 80 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 73 TotalNumberOfCompositions, 2810 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 4 procedures, 78 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.5s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.1s, HoareTripleCheckerStatistics: 81 SDtfs, 61 SDslu, 54 SDs, 0 SdLazy, 18 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 1434 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...