/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-05 22:48:15,055 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-05 22:48:15,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-05 22:48:15,094 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-05 22:48:15,094 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-05 22:48:15,102 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-05 22:48:15,105 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-05 22:48:15,108 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-05 22:48:15,111 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-05 22:48:15,113 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-05 22:48:15,114 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-05 22:48:15,115 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-05 22:48:15,115 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-05 22:48:15,117 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-05 22:48:15,119 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-05 22:48:15,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-05 22:48:15,122 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-05 22:48:15,123 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-05 22:48:15,124 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-05 22:48:15,132 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-05 22:48:15,135 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-05 22:48:15,136 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-05 22:48:15,136 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-05 22:48:15,137 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-05 22:48:15,149 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-05 22:48:15,152 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-05 22:48:15,152 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-05 22:48:15,153 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-05 22:48:15,154 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-05 22:48:15,157 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-05 22:48:15,158 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-05 22:48:15,158 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-05 22:48:15,160 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-05 22:48:15,160 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-05 22:48:15,164 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-05 22:48:15,165 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-05 22:48:15,165 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-05 22:48:15,165 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-05 22:48:15,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-05 22:48:15,166 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-05 22:48:15,167 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-05 22:48:15,168 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-05 22:48:15,192 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-05 22:48:15,192 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-05 22:48:15,193 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-05 22:48:15,193 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-05 22:48:15,193 INFO L138 SettingsManager]: * Use SBE=true [2020-10-05 22:48:15,194 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-05 22:48:15,194 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-05 22:48:15,194 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-05 22:48:15,194 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-05 22:48:15,194 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-05 22:48:15,195 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-05 22:48:15,195 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-05 22:48:15,195 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-05 22:48:15,195 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-05 22:48:15,195 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-05 22:48:15,196 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-05 22:48:15,196 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-05 22:48:15,196 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-05 22:48:15,196 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-05 22:48:15,196 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-05 22:48:15,196 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-05 22:48:15,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-05 22:48:15,197 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-05 22:48:15,197 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-05 22:48:15,197 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-05 22:48:15,197 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-05 22:48:15,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-05 22:48:15,198 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-05 22:48:15,198 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-05 22:48:15,198 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-05 22:48:15,506 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-05 22:48:15,524 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-05 22:48:15,529 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-05 22:48:15,530 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-05 22:48:15,530 INFO L275 PluginConnector]: CDTParser initialized [2020-10-05 22:48:15,531 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.oepc.i [2020-10-05 22:48:15,595 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4a9a1fbb/d7e1c8e21a5948309510a291849a4d3f/FLAG3b0c50212 [2020-10-05 22:48:16,125 INFO L306 CDTParser]: Found 1 translation units. [2020-10-05 22:48:16,125 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.oepc.i [2020-10-05 22:48:16,138 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4a9a1fbb/d7e1c8e21a5948309510a291849a4d3f/FLAG3b0c50212 [2020-10-05 22:48:16,412 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4a9a1fbb/d7e1c8e21a5948309510a291849a4d3f [2020-10-05 22:48:16,419 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-05 22:48:16,421 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-05 22:48:16,422 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-05 22:48:16,422 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-05 22:48:16,425 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-05 22:48:16,426 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 10:48:16" (1/1) ... [2020-10-05 22:48:16,429 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41b6f441 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:48:16, skipping insertion in model container [2020-10-05 22:48:16,429 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 10:48:16" (1/1) ... [2020-10-05 22:48:16,437 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-05 22:48:16,492 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-05 22:48:16,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 22:48:16,940 INFO L203 MainTranslator]: Completed pre-run [2020-10-05 22:48:16,986 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 22:48:17,064 INFO L208 MainTranslator]: Completed translation [2020-10-05 22:48:17,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:48:17 WrapperNode [2020-10-05 22:48:17,065 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-05 22:48:17,065 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-05 22:48:17,066 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-05 22:48:17,066 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-05 22:48:17,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:48:17" (1/1) ... [2020-10-05 22:48:17,090 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:48:17" (1/1) ... [2020-10-05 22:48:17,112 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-05 22:48:17,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-05 22:48:17,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-05 22:48:17,113 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-05 22:48:17,122 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:48:17" (1/1) ... [2020-10-05 22:48:17,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:48:17" (1/1) ... [2020-10-05 22:48:17,125 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:48:17" (1/1) ... [2020-10-05 22:48:17,125 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:48:17" (1/1) ... [2020-10-05 22:48:17,131 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:48:17" (1/1) ... [2020-10-05 22:48:17,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:48:17" (1/1) ... [2020-10-05 22:48:17,135 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:48:17" (1/1) ... [2020-10-05 22:48:17,138 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-05 22:48:17,139 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-05 22:48:17,139 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-05 22:48:17,139 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-05 22:48:17,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:48:17" (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 22:48:17,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-05 22:48:17,206 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-05 22:48:17,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-05 22:48:17,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-05 22:48:17,206 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-05 22:48:17,207 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-05 22:48:17,207 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-05 22:48:17,208 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-05 22:48:17,208 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-05 22:48:17,209 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-05 22:48:17,209 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-05 22:48:17,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-05 22:48:17,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-05 22:48:17,211 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 22:48:17,528 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-05 22:48:17,529 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-05 22:48:17,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 10:48:17 BoogieIcfgContainer [2020-10-05 22:48:17,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-05 22:48:17,549 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-05 22:48:17,549 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-05 22:48:17,552 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-05 22:48:17,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.10 10:48:16" (1/3) ... [2020-10-05 22:48:17,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e96b203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 10:48:17, skipping insertion in model container [2020-10-05 22:48:17,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:48:17" (2/3) ... [2020-10-05 22:48:17,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e96b203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 10:48:17, skipping insertion in model container [2020-10-05 22:48:17,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 10:48:17" (3/3) ... [2020-10-05 22:48:17,556 INFO L109 eAbstractionObserver]: Analyzing ICFG safe004_tso.oepc.i [2020-10-05 22:48:17,564 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-05 22:48:17,564 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-05 22:48:17,570 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-05 22:48:17,571 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-05 22:48:17,600 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:17,601 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:17,601 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:17,601 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:17,602 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:17,602 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:17,603 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:17,603 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:17,604 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:17,604 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:17,604 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:17,604 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:17,605 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:17,605 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:17,605 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:17,606 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:17,606 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:17,606 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:17,610 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:17,610 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:17,611 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:17,611 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:17,616 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:17,617 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:17,617 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:17,617 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:17,620 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:17,620 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:17,620 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:17,621 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:17,635 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-05 22:48:17,654 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 22:48:17,654 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 22:48:17,654 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-05 22:48:17,654 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 22:48:17,654 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 22:48:17,654 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 22:48:17,655 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 22:48:17,655 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 22:48:17,669 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-10-05 22:48:17,671 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-05 22:48:17,715 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-05 22:48:17,716 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 22:48:17,720 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 54 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 22:48:17,723 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-05 22:48:17,744 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-05 22:48:17,745 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 22:48:17,746 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 54 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 22:48:17,748 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-10-05 22:48:17,749 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-10-05 22:48:19,296 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2483 [2020-10-05 22:48:19,296 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-10-05 22:48:19,300 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-05 22:48:19,325 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-05 22:48:19,327 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-05 22:48:19,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-05 22:48:19,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:48:19,336 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:48:19,336 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:48:19,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:48:19,341 INFO L82 PathProgramCache]: Analyzing trace with hash -245765301, now seen corresponding path program 1 times [2020-10-05 22:48:19,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:48:19,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012327836] [2020-10-05 22:48:19,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:48:19,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:48:19,625 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 22:48:19,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012327836] [2020-10-05 22:48:19,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:48:19,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-05 22:48:19,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743204003] [2020-10-05 22:48:19,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 22:48:19,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:48:19,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 22:48:19,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:48:19,652 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-05 22:48:19,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:48:19,713 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-05 22:48:19,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 22:48:19,714 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-05 22:48:19,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:48:19,730 INFO L225 Difference]: With dead ends: 282 [2020-10-05 22:48:19,730 INFO L226 Difference]: Without dead ends: 218 [2020-10-05 22:48:19,732 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:48:19,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-05 22:48:19,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-05 22:48:19,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-05 22:48:19,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-05 22:48:19,798 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-05 22:48:19,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:48:19,799 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-05 22:48:19,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 22:48:19,799 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-05 22:48:19,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-05 22:48:19,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:48:19,801 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:48:19,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-05 22:48:19,801 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:48:19,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:48:19,802 INFO L82 PathProgramCache]: Analyzing trace with hash 971209488, now seen corresponding path program 1 times [2020-10-05 22:48:19,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:48:19,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375626807] [2020-10-05 22:48:19,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:48:19,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:48:19,878 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 22:48:19,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375626807] [2020-10-05 22:48:19,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:48:19,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 22:48:19,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454434093] [2020-10-05 22:48:19,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:48:19,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:48:19,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:48:19,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:48:19,884 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-10-05 22:48:19,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:48:19,939 INFO L93 Difference]: Finished difference Result 296 states and 796 transitions. [2020-10-05 22:48:19,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 22:48:19,942 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-05 22:48:19,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:48:19,944 INFO L225 Difference]: With dead ends: 296 [2020-10-05 22:48:19,945 INFO L226 Difference]: Without dead ends: 200 [2020-10-05 22:48:19,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 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 22:48:19,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-05 22:48:19,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2020-10-05 22:48:19,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-10-05 22:48:19,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 536 transitions. [2020-10-05 22:48:19,981 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 536 transitions. Word has length 9 [2020-10-05 22:48:19,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:48:19,982 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 536 transitions. [2020-10-05 22:48:19,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:48:19,985 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 536 transitions. [2020-10-05 22:48:19,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 22:48:19,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:48:19,987 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:48:19,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-05 22:48:19,987 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:48:19,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:48:19,988 INFO L82 PathProgramCache]: Analyzing trace with hash -222134721, now seen corresponding path program 1 times [2020-10-05 22:48:19,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:48:19,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651149790] [2020-10-05 22:48:19,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:48:20,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:48:20,077 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 22:48:20,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651149790] [2020-10-05 22:48:20,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:48:20,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 22:48:20,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476688636] [2020-10-05 22:48:20,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:48:20,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:48:20,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:48:20,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:48:20,082 INFO L87 Difference]: Start difference. First operand 200 states and 536 transitions. Second operand 4 states. [2020-10-05 22:48:20,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:48:20,123 INFO L93 Difference]: Finished difference Result 314 states and 804 transitions. [2020-10-05 22:48:20,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 22:48:20,124 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-05 22:48:20,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:48:20,127 INFO L225 Difference]: With dead ends: 314 [2020-10-05 22:48:20,127 INFO L226 Difference]: Without dead ends: 182 [2020-10-05 22:48:20,128 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 22:48:20,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-05 22:48:20,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 146. [2020-10-05 22:48:20,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-05 22:48:20,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 354 transitions. [2020-10-05 22:48:20,139 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 354 transitions. Word has length 10 [2020-10-05 22:48:20,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:48:20,139 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 354 transitions. [2020-10-05 22:48:20,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:48:20,139 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 354 transitions. [2020-10-05 22:48:20,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:48:20,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:48:20,141 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:48:20,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-05 22:48:20,141 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:48:20,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:48:20,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1304596236, now seen corresponding path program 1 times [2020-10-05 22:48:20,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:48:20,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531682327] [2020-10-05 22:48:20,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:48:20,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:48:20,176 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 22:48:20,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531682327] [2020-10-05 22:48:20,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:48:20,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-05 22:48:20,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734637183] [2020-10-05 22:48:20,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 22:48:20,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:48:20,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 22:48:20,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:48:20,193 INFO L87 Difference]: Start difference. First operand 146 states and 354 transitions. Second operand 3 states. [2020-10-05 22:48:20,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:48:20,207 INFO L93 Difference]: Finished difference Result 138 states and 328 transitions. [2020-10-05 22:48:20,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 22:48:20,208 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-05 22:48:20,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:48:20,209 INFO L225 Difference]: With dead ends: 138 [2020-10-05 22:48:20,209 INFO L226 Difference]: Without dead ends: 138 [2020-10-05 22:48:20,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:48:20,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-05 22:48:20,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-10-05 22:48:20,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-05 22:48:20,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 328 transitions. [2020-10-05 22:48:20,222 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 328 transitions. Word has length 11 [2020-10-05 22:48:20,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:48:20,223 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 328 transitions. [2020-10-05 22:48:20,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 22:48:20,223 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 328 transitions. [2020-10-05 22:48:20,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:48:20,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:48:20,232 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:48:20,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-05 22:48:20,233 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:48:20,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:48:20,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1787779324, now seen corresponding path program 1 times [2020-10-05 22:48:20,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:48:20,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223557356] [2020-10-05 22:48:20,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:48:20,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:48:20,291 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 22:48:20,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223557356] [2020-10-05 22:48:20,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:48:20,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 22:48:20,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886297057] [2020-10-05 22:48:20,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 22:48:20,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:48:20,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 22:48:20,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:48:20,294 INFO L87 Difference]: Start difference. First operand 138 states and 328 transitions. Second operand 3 states. [2020-10-05 22:48:20,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:48:20,305 INFO L93 Difference]: Finished difference Result 170 states and 400 transitions. [2020-10-05 22:48:20,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 22:48:20,305 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-05 22:48:20,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:48:20,306 INFO L225 Difference]: With dead ends: 170 [2020-10-05 22:48:20,306 INFO L226 Difference]: Without dead ends: 80 [2020-10-05 22:48:20,307 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 22:48:20,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-05 22:48:20,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-10-05 22:48:20,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-05 22:48:20,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 180 transitions. [2020-10-05 22:48:20,311 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 180 transitions. Word has length 12 [2020-10-05 22:48:20,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:48:20,311 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 180 transitions. [2020-10-05 22:48:20,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 22:48:20,311 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 180 transitions. [2020-10-05 22:48:20,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:48:20,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:48:20,313 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:48:20,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-05 22:48:20,313 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:48:20,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:48:20,313 INFO L82 PathProgramCache]: Analyzing trace with hash 413447767, now seen corresponding path program 1 times [2020-10-05 22:48:20,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:48:20,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806818472] [2020-10-05 22:48:20,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:48:20,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:48:20,344 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 22:48:20,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806818472] [2020-10-05 22:48:20,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:48:20,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 22:48:20,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130936922] [2020-10-05 22:48:20,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:48:20,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:48:20,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:48:20,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:48:20,347 INFO L87 Difference]: Start difference. First operand 80 states and 180 transitions. Second operand 4 states. [2020-10-05 22:48:20,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:48:20,363 INFO L93 Difference]: Finished difference Result 104 states and 232 transitions. [2020-10-05 22:48:20,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 22:48:20,363 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-05 22:48:20,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:48:20,364 INFO L225 Difference]: With dead ends: 104 [2020-10-05 22:48:20,364 INFO L226 Difference]: Without dead ends: 68 [2020-10-05 22:48:20,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 22:48:20,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-05 22:48:20,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-05 22:48:20,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-05 22:48:20,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-10-05 22:48:20,368 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 13 [2020-10-05 22:48:20,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:48:20,369 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-10-05 22:48:20,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:48:20,369 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-10-05 22:48:20,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:48:20,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:48:20,370 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:48:20,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-05 22:48:20,370 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:48:20,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:48:20,371 INFO L82 PathProgramCache]: Analyzing trace with hash 413415217, now seen corresponding path program 2 times [2020-10-05 22:48:20,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:48:20,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310192745] [2020-10-05 22:48:20,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:48:20,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:48:20,430 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 22:48:20,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310192745] [2020-10-05 22:48:20,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:48:20,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 22:48:20,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822131566] [2020-10-05 22:48:20,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:48:20,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:48:20,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:48:20,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:48:20,433 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand 4 states. [2020-10-05 22:48:20,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:48:20,468 INFO L93 Difference]: Finished difference Result 81 states and 157 transitions. [2020-10-05 22:48:20,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 22:48:20,468 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-05 22:48:20,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:48:20,469 INFO L225 Difference]: With dead ends: 81 [2020-10-05 22:48:20,469 INFO L226 Difference]: Without dead ends: 59 [2020-10-05 22:48:20,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 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 22:48:20,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-05 22:48:20,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-05 22:48:20,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-05 22:48:20,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2020-10-05 22:48:20,473 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 13 [2020-10-05 22:48:20,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:48:20,473 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2020-10-05 22:48:20,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:48:20,473 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2020-10-05 22:48:20,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:48:20,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:48:20,474 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:48:20,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-05 22:48:20,475 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:48:20,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:48:20,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1574125730, now seen corresponding path program 1 times [2020-10-05 22:48:20,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:48:20,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890474676] [2020-10-05 22:48:20,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:48:20,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:48:20,523 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 22:48:20,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890474676] [2020-10-05 22:48:20,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:48:20,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 22:48:20,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097895178] [2020-10-05 22:48:20,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 22:48:20,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:48:20,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 22:48:20,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:48:20,525 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand 5 states. [2020-10-05 22:48:20,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:48:20,561 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2020-10-05 22:48:20,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-05 22:48:20,561 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-05 22:48:20,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:48:20,562 INFO L225 Difference]: With dead ends: 60 [2020-10-05 22:48:20,562 INFO L226 Difference]: Without dead ends: 45 [2020-10-05 22:48:20,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-05 22:48:20,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-05 22:48:20,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-05 22:48:20,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-05 22:48:20,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 74 transitions. [2020-10-05 22:48:20,565 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 74 transitions. Word has length 14 [2020-10-05 22:48:20,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:48:20,565 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 74 transitions. [2020-10-05 22:48:20,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 22:48:20,566 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 74 transitions. [2020-10-05 22:48:20,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-05 22:48:20,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:48:20,567 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:48:20,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-05 22:48:20,567 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:48:20,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:48:20,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1126720068, now seen corresponding path program 1 times [2020-10-05 22:48:20,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:48:20,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744292833] [2020-10-05 22:48:20,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:48:20,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:48:20,635 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 22:48:20,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744292833] [2020-10-05 22:48:20,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:48:20,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-05 22:48:20,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451912944] [2020-10-05 22:48:20,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-05 22:48:20,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:48:20,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-05 22:48:20,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-05 22:48:20,639 INFO L87 Difference]: Start difference. First operand 45 states and 74 transitions. Second operand 6 states. [2020-10-05 22:48:20,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:48:20,689 INFO L93 Difference]: Finished difference Result 42 states and 66 transitions. [2020-10-05 22:48:20,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-05 22:48:20,689 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-05 22:48:20,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:48:20,690 INFO L225 Difference]: With dead ends: 42 [2020-10-05 22:48:20,690 INFO L226 Difference]: Without dead ends: 36 [2020-10-05 22:48:20,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-05 22:48:20,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-05 22:48:20,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-05 22:48:20,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-05 22:48:20,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-10-05 22:48:20,695 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-10-05 22:48:20,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:48:20,695 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-10-05 22:48:20,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-05 22:48:20,695 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-10-05 22:48:20,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-05 22:48:20,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:48:20,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:48:20,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-05 22:48:20,696 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:48:20,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:48:20,696 INFO L82 PathProgramCache]: Analyzing trace with hash 392863110, now seen corresponding path program 1 times [2020-10-05 22:48:20,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:48:20,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954982205] [2020-10-05 22:48:20,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:48:20,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:48:20,738 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 22:48:20,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954982205] [2020-10-05 22:48:20,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:48:20,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 22:48:20,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775590629] [2020-10-05 22:48:20,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 22:48:20,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:48:20,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 22:48:20,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:48:20,740 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 3 states. [2020-10-05 22:48:20,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:48:20,744 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-10-05 22:48:20,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 22:48:20,744 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-05 22:48:20,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:48:20,745 INFO L225 Difference]: With dead ends: 35 [2020-10-05 22:48:20,745 INFO L226 Difference]: Without dead ends: 0 [2020-10-05 22:48:20,745 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 22:48:20,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-05 22:48:20,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-05 22:48:20,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-05 22:48:20,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-05 22:48:20,746 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-05 22:48:20,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:48:20,746 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-05 22:48:20,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 22:48:20,747 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-05 22:48:20,747 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-05 22:48:20,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-05 22:48:20,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.10 10:48:20 BasicIcfg [2020-10-05 22:48:20,753 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-05 22:48:20,756 INFO L168 Benchmark]: Toolchain (without parser) took 4334.09 ms. Allocated memory was 141.0 MB in the beginning and 245.4 MB in the end (delta: 104.3 MB). Free memory was 102.3 MB in the beginning and 138.2 MB in the end (delta: -36.0 MB). Peak memory consumption was 68.4 MB. Max. memory is 7.1 GB. [2020-10-05 22:48:20,757 INFO L168 Benchmark]: CDTParser took 1.31 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.2 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-05 22:48:20,758 INFO L168 Benchmark]: CACSL2BoogieTranslator took 643.60 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 101.8 MB in the beginning and 160.7 MB in the end (delta: -58.8 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-10-05 22:48:20,762 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.24 ms. Allocated memory is still 203.9 MB. Free memory was 160.7 MB in the beginning and 158.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-05 22:48:20,763 INFO L168 Benchmark]: Boogie Preprocessor took 25.70 ms. Allocated memory is still 203.9 MB. Free memory was 158.8 MB in the beginning and 157.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-05 22:48:20,764 INFO L168 Benchmark]: RCFGBuilder took 394.09 ms. Allocated memory is still 203.9 MB. Free memory was 157.0 MB in the beginning and 134.9 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-10-05 22:48:20,765 INFO L168 Benchmark]: TraceAbstraction took 3203.94 ms. Allocated memory was 203.9 MB in the beginning and 245.4 MB in the end (delta: 41.4 MB). Free memory was 134.0 MB in the beginning and 138.2 MB in the end (delta: -4.2 MB). Peak memory consumption was 37.2 MB. Max. memory is 7.1 GB. [2020-10-05 22:48:20,774 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.31 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.2 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 643.60 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 101.8 MB in the beginning and 160.7 MB in the end (delta: -58.8 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 47.24 ms. Allocated memory is still 203.9 MB. Free memory was 160.7 MB in the beginning and 158.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.70 ms. Allocated memory is still 203.9 MB. Free memory was 158.8 MB in the beginning and 157.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 394.09 ms. Allocated memory is still 203.9 MB. Free memory was 157.0 MB in the beginning and 134.9 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3203.94 ms. Allocated memory was 203.9 MB in the beginning and 245.4 MB in the end (delta: 41.4 MB). Free memory was 134.0 MB in the beginning and 138.2 MB in the end (delta: -4.2 MB). Peak memory consumption was 37.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 673 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 9 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 2483 CheckedPairsTotal, 57 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: 3.0s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 193 SDtfs, 133 SDslu, 201 SDs, 0 SdLazy, 127 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 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, 10 MinimizatonAttempts, 36 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 122 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 3658 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...