/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/safe017_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-11 15:26:20,173 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 15:26:20,178 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 15:26:20,223 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 15:26:20,224 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 15:26:20,226 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 15:26:20,227 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 15:26:20,233 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 15:26:20,238 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 15:26:20,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 15:26:20,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 15:26:20,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 15:26:20,241 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 15:26:20,242 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 15:26:20,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 15:26:20,245 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 15:26:20,246 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 15:26:20,247 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 15:26:20,250 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 15:26:20,252 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 15:26:20,253 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 15:26:20,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 15:26:20,256 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 15:26:20,257 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 15:26:20,260 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-11 15:26:20,260 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-11 15:26:20,261 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-11 15:26:20,262 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-11 15:26:20,262 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-11 15:26:20,263 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-11 15:26:20,263 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 15:26:20,264 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 15:26:20,265 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 15:26:20,269 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 15:26:20,270 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 15:26:20,270 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 15:26:20,271 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 15:26:20,272 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 15:26:20,272 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 15:26:20,273 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 15:26:20,274 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 15:26:20,275 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-11 15:26:20,302 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 15:26:20,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 15:26:20,303 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 15:26:20,304 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 15:26:20,304 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 15:26:20,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 15:26:20,304 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 15:26:20,305 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 15:26:20,305 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 15:26:20,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 15:26:20,305 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 15:26:20,305 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 15:26:20,306 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 15:26:20,306 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 15:26:20,306 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 15:26:20,306 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 15:26:20,306 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 15:26:20,307 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 15:26:20,307 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 15:26:20,307 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 15:26:20,307 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 15:26:20,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 15:26:20,308 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 15:26:20,308 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-11 15:26:20,308 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 15:26:20,308 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 15:26:20,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 15:26:20,309 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 15:26:20,309 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-11 15:26:20,309 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-11 15:26:20,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 15:26:20,751 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 15:26:20,755 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 15:26:20,757 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 15:26:20,758 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 15:26:20,759 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i [2020-09-11 15:26:20,862 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e339aa1eb/48058af6fae34edeb6167ec66946f9c6/FLAG35e2bdf3b [2020-09-11 15:26:21,567 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 15:26:21,568 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i [2020-09-11 15:26:21,585 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e339aa1eb/48058af6fae34edeb6167ec66946f9c6/FLAG35e2bdf3b [2020-09-11 15:26:21,811 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e339aa1eb/48058af6fae34edeb6167ec66946f9c6 [2020-09-11 15:26:21,828 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 15:26:21,835 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 15:26:21,837 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 15:26:21,838 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 15:26:21,842 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 15:26:21,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 03:26:21" (1/1) ... [2020-09-11 15:26:21,848 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@409b5e94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:26:21, skipping insertion in model container [2020-09-11 15:26:21,848 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 03:26:21" (1/1) ... [2020-09-11 15:26:21,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 15:26:21,909 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 15:26:22,495 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 15:26:22,516 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 15:26:22,599 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 15:26:22,699 INFO L208 MainTranslator]: Completed translation [2020-09-11 15:26:22,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:26:22 WrapperNode [2020-09-11 15:26:22,701 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 15:26:22,702 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 15:26:22,702 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 15:26:22,703 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 15:26:22,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:26:22" (1/1) ... [2020-09-11 15:26:22,734 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:26:22" (1/1) ... [2020-09-11 15:26:22,763 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 15:26:22,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 15:26:22,764 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 15:26:22,764 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 15:26:22,776 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:26:22" (1/1) ... [2020-09-11 15:26:22,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:26:22" (1/1) ... [2020-09-11 15:26:22,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:26:22" (1/1) ... [2020-09-11 15:26:22,779 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:26:22" (1/1) ... [2020-09-11 15:26:22,786 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:26:22" (1/1) ... [2020-09-11 15:26:22,789 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:26:22" (1/1) ... [2020-09-11 15:26:22,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:26:22" (1/1) ... [2020-09-11 15:26:22,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 15:26:22,796 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 15:26:22,796 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 15:26:22,796 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 15:26:22,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:26:22" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 15:26:22,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 15:26:22,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-11 15:26:22,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 15:26:22,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 15:26:22,880 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-11 15:26:22,880 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-11 15:26:22,880 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-11 15:26:22,880 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-11 15:26:22,881 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-11 15:26:22,881 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-11 15:26:22,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-11 15:26:22,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 15:26:22,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 15:26:22,884 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-11 15:26:23,225 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 15:26:23,225 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-11 15:26:23,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 03:26:23 BoogieIcfgContainer [2020-09-11 15:26:23,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 15:26:23,243 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 15:26:23,243 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 15:26:23,248 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 15:26:23,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 03:26:21" (1/3) ... [2020-09-11 15:26:23,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79f07b3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 03:26:23, skipping insertion in model container [2020-09-11 15:26:23,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:26:22" (2/3) ... [2020-09-11 15:26:23,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79f07b3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 03:26:23, skipping insertion in model container [2020-09-11 15:26:23,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 03:26:23" (3/3) ... [2020-09-11 15:26:23,258 INFO L109 eAbstractionObserver]: Analyzing ICFG safe017_tso.oepc.i [2020-09-11 15:26:23,269 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 15:26:23,270 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-11 15:26:23,281 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-11 15:26:23,282 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 15:26:23,315 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:26:23,316 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:26:23,316 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:26:23,316 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:26:23,317 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:26:23,317 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:26:23,318 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:26:23,318 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:26:23,318 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:26:23,318 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:26:23,319 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:26:23,319 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:26:23,320 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:26:23,320 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:26:23,320 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:26:23,320 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:26:23,321 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:26:23,321 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:26:23,326 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:26:23,326 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:26:23,326 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:26:23,327 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:26:23,334 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:26:23,334 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:26:23,334 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:26:23,335 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:26:23,337 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:26:23,338 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:26:23,338 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:26:23,338 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:26:23,363 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-11 15:26:23,387 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 15:26:23,387 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 15:26:23,387 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-11 15:26:23,388 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 15:26:23,388 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 15:26:23,388 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 15:26:23,388 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 15:26:23,388 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 15:26:23,407 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 67 transitions, 149 flow [2020-09-11 15:26:23,410 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 67 transitions, 149 flow [2020-09-11 15:26:23,468 INFO L129 PetriNetUnfolder]: 2/64 cut-off events. [2020-09-11 15:26:23,468 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 15:26:23,479 INFO L80 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 64 events. 2/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-09-11 15:26:23,483 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 67 transitions, 149 flow [2020-09-11 15:26:23,528 INFO L129 PetriNetUnfolder]: 2/64 cut-off events. [2020-09-11 15:26:23,528 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 15:26:23,529 INFO L80 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 64 events. 2/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-09-11 15:26:23,535 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1178 [2020-09-11 15:26:23,537 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-11 15:26:24,936 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-09-11 15:26:25,302 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1818 [2020-09-11 15:26:25,303 INFO L214 etLargeBlockEncoding]: Total number of compositions: 52 [2020-09-11 15:26:25,307 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-09-11 15:26:25,330 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2020-09-11 15:26:25,333 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2020-09-11 15:26:25,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-11 15:26:25,342 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:26:25,343 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:26:25,343 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:26:25,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:26:25,351 INFO L82 PathProgramCache]: Analyzing trace with hash -540517404, now seen corresponding path program 1 times [2020-09-11 15:26:25,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:26:25,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844514020] [2020-09-11 15:26:25,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:26:25,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:26:25,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:26:25,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844514020] [2020-09-11 15:26:25,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:26:25,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 15:26:25,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764910496] [2020-09-11 15:26:25,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 15:26:25,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:26:25,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 15:26:25,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:26:25,637 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2020-09-11 15:26:25,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:26:25,692 INFO L93 Difference]: Finished difference Result 220 states and 612 transitions. [2020-09-11 15:26:25,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 15:26:25,694 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-11 15:26:25,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:26:25,713 INFO L225 Difference]: With dead ends: 220 [2020-09-11 15:26:25,713 INFO L226 Difference]: Without dead ends: 172 [2020-09-11 15:26:25,715 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 [2020-09-11 15:26:25,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-09-11 15:26:25,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2020-09-11 15:26:25,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-09-11 15:26:25,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 460 transitions. [2020-09-11 15:26:25,783 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 460 transitions. Word has length 8 [2020-09-11 15:26:25,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:26:25,784 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 460 transitions. [2020-09-11 15:26:25,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 15:26:25,785 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 460 transitions. [2020-09-11 15:26:25,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 15:26:25,786 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:26:25,786 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:26:25,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 15:26:25,787 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:26:25,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:26:25,787 INFO L82 PathProgramCache]: Analyzing trace with hash 533202091, now seen corresponding path program 1 times [2020-09-11 15:26:25,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:26:25,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304552586] [2020-09-11 15:26:25,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:26:25,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:26:25,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:26:25,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304552586] [2020-09-11 15:26:25,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:26:25,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 15:26:25,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015572786] [2020-09-11 15:26:25,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 15:26:25,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:26:25,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 15:26:25,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:26:25,873 INFO L87 Difference]: Start difference. First operand 172 states and 460 transitions. Second operand 3 states. [2020-09-11 15:26:25,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:26:25,886 INFO L93 Difference]: Finished difference Result 166 states and 438 transitions. [2020-09-11 15:26:25,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 15:26:25,887 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-11 15:26:25,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:26:25,889 INFO L225 Difference]: With dead ends: 166 [2020-09-11 15:26:25,889 INFO L226 Difference]: Without dead ends: 166 [2020-09-11 15:26:25,890 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 [2020-09-11 15:26:25,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-09-11 15:26:25,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-09-11 15:26:25,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-09-11 15:26:25,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 438 transitions. [2020-09-11 15:26:25,913 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 438 transitions. Word has length 9 [2020-09-11 15:26:25,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:26:25,913 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 438 transitions. [2020-09-11 15:26:25,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 15:26:25,913 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 438 transitions. [2020-09-11 15:26:25,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-11 15:26:25,916 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:26:25,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:26:25,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 15:26:25,917 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:26:25,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:26:25,917 INFO L82 PathProgramCache]: Analyzing trace with hash -650605017, now seen corresponding path program 1 times [2020-09-11 15:26:25,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:26:25,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586912905] [2020-09-11 15:26:25,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:26:25,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:26:26,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:26:26,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586912905] [2020-09-11 15:26:26,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:26:26,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 15:26:26,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490968512] [2020-09-11 15:26:26,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 15:26:26,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:26:26,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 15:26:26,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:26:26,053 INFO L87 Difference]: Start difference. First operand 166 states and 438 transitions. Second operand 3 states. [2020-09-11 15:26:26,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:26:26,067 INFO L93 Difference]: Finished difference Result 158 states and 412 transitions. [2020-09-11 15:26:26,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 15:26:26,067 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-11 15:26:26,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:26:26,070 INFO L225 Difference]: With dead ends: 158 [2020-09-11 15:26:26,070 INFO L226 Difference]: Without dead ends: 158 [2020-09-11 15:26:26,070 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 [2020-09-11 15:26:26,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-09-11 15:26:26,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-09-11 15:26:26,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-09-11 15:26:26,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 412 transitions. [2020-09-11 15:26:26,084 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 412 transitions. Word has length 10 [2020-09-11 15:26:26,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:26:26,085 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 412 transitions. [2020-09-11 15:26:26,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 15:26:26,085 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 412 transitions. [2020-09-11 15:26:26,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-11 15:26:26,086 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:26:26,086 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:26:26,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 15:26:26,087 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:26:26,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:26:26,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1305380691, now seen corresponding path program 1 times [2020-09-11 15:26:26,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:26:26,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604066177] [2020-09-11 15:26:26,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:26:26,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:26:26,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:26:26,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604066177] [2020-09-11 15:26:26,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:26:26,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:26:26,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088797378] [2020-09-11 15:26:26,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:26:26,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:26:26,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:26:26,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:26:26,145 INFO L87 Difference]: Start difference. First operand 158 states and 412 transitions. Second operand 4 states. [2020-09-11 15:26:26,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:26:26,177 INFO L93 Difference]: Finished difference Result 218 states and 560 transitions. [2020-09-11 15:26:26,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 15:26:26,178 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-11 15:26:26,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:26:26,180 INFO L225 Difference]: With dead ends: 218 [2020-09-11 15:26:26,180 INFO L226 Difference]: Without dead ends: 146 [2020-09-11 15:26:26,180 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 [2020-09-11 15:26:26,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-09-11 15:26:26,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-09-11 15:26:26,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-09-11 15:26:26,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 370 transitions. [2020-09-11 15:26:26,193 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 370 transitions. Word has length 11 [2020-09-11 15:26:26,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:26:26,194 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 370 transitions. [2020-09-11 15:26:26,194 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:26:26,194 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 370 transitions. [2020-09-11 15:26:26,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-11 15:26:26,195 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:26:26,195 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:26:26,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 15:26:26,196 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:26:26,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:26:26,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1306080051, now seen corresponding path program 2 times [2020-09-11 15:26:26,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:26:26,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110747576] [2020-09-11 15:26:26,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:26:26,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:26:26,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:26:26,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110747576] [2020-09-11 15:26:26,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:26:26,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:26:26,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131875053] [2020-09-11 15:26:26,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:26:26,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:26:26,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:26:26,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:26:26,317 INFO L87 Difference]: Start difference. First operand 146 states and 370 transitions. Second operand 4 states. [2020-09-11 15:26:26,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:26:26,373 INFO L93 Difference]: Finished difference Result 167 states and 388 transitions. [2020-09-11 15:26:26,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 15:26:26,374 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-11 15:26:26,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:26:26,375 INFO L225 Difference]: With dead ends: 167 [2020-09-11 15:26:26,376 INFO L226 Difference]: Without dead ends: 125 [2020-09-11 15:26:26,376 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 [2020-09-11 15:26:26,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-09-11 15:26:26,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-09-11 15:26:26,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-09-11 15:26:26,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 288 transitions. [2020-09-11 15:26:26,401 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 288 transitions. Word has length 11 [2020-09-11 15:26:26,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:26:26,402 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 288 transitions. [2020-09-11 15:26:26,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:26:26,402 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 288 transitions. [2020-09-11 15:26:26,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-11 15:26:26,403 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:26:26,403 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:26:26,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-11 15:26:26,404 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:26:26,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:26:26,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1819207960, now seen corresponding path program 1 times [2020-09-11 15:26:26,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:26:26,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926053704] [2020-09-11 15:26:26,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:26:26,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:26:26,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:26:26,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926053704] [2020-09-11 15:26:26,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:26:26,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:26:26,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253301932] [2020-09-11 15:26:26,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:26:26,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:26:26,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:26:26,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:26:26,490 INFO L87 Difference]: Start difference. First operand 125 states and 288 transitions. Second operand 5 states. [2020-09-11 15:26:26,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:26:26,541 INFO L93 Difference]: Finished difference Result 121 states and 257 transitions. [2020-09-11 15:26:26,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 15:26:26,543 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-11 15:26:26,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:26:26,544 INFO L225 Difference]: With dead ends: 121 [2020-09-11 15:26:26,544 INFO L226 Difference]: Without dead ends: 93 [2020-09-11 15:26:26,544 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 [2020-09-11 15:26:26,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-09-11 15:26:26,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-09-11 15:26:26,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-11 15:26:26,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 192 transitions. [2020-09-11 15:26:26,550 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 192 transitions. Word has length 12 [2020-09-11 15:26:26,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:26:26,550 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 192 transitions. [2020-09-11 15:26:26,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:26:26,551 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 192 transitions. [2020-09-11 15:26:26,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 15:26:26,552 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:26:26,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:26:26,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-11 15:26:26,552 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:26:26,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:26:26,553 INFO L82 PathProgramCache]: Analyzing trace with hash 589619789, now seen corresponding path program 1 times [2020-09-11 15:26:26,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:26:26,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976830781] [2020-09-11 15:26:26,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:26:26,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:26:26,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:26:26,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976830781] [2020-09-11 15:26:26,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:26:26,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:26:26,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001425183] [2020-09-11 15:26:26,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 15:26:26,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:26:26,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 15:26:26,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:26:26,600 INFO L87 Difference]: Start difference. First operand 93 states and 192 transitions. Second operand 3 states. [2020-09-11 15:26:26,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:26:26,608 INFO L93 Difference]: Finished difference Result 110 states and 218 transitions. [2020-09-11 15:26:26,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 15:26:26,608 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-09-11 15:26:26,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:26:26,609 INFO L225 Difference]: With dead ends: 110 [2020-09-11 15:26:26,609 INFO L226 Difference]: Without dead ends: 88 [2020-09-11 15:26:26,610 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 [2020-09-11 15:26:26,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-11 15:26:26,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-09-11 15:26:26,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-11 15:26:26,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 169 transitions. [2020-09-11 15:26:26,615 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 169 transitions. Word has length 13 [2020-09-11 15:26:26,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:26:26,616 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 169 transitions. [2020-09-11 15:26:26,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 15:26:26,616 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 169 transitions. [2020-09-11 15:26:26,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-11 15:26:26,617 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:26:26,617 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:26:26,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-11 15:26:26,618 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:26:26,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:26:26,618 INFO L82 PathProgramCache]: Analyzing trace with hash 205369494, now seen corresponding path program 1 times [2020-09-11 15:26:26,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:26:26,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283535858] [2020-09-11 15:26:26,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:26:26,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:26:26,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:26:26,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283535858] [2020-09-11 15:26:26,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:26:26,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:26:26,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084228446] [2020-09-11 15:26:26,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 15:26:26,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:26:26,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 15:26:26,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:26:26,660 INFO L87 Difference]: Start difference. First operand 86 states and 169 transitions. Second operand 3 states. [2020-09-11 15:26:26,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:26:26,669 INFO L93 Difference]: Finished difference Result 104 states and 195 transitions. [2020-09-11 15:26:26,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 15:26:26,670 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-09-11 15:26:26,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:26:26,670 INFO L225 Difference]: With dead ends: 104 [2020-09-11 15:26:26,671 INFO L226 Difference]: Without dead ends: 66 [2020-09-11 15:26:26,671 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 [2020-09-11 15:26:26,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-11 15:26:26,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-09-11 15:26:26,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-11 15:26:26,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 111 transitions. [2020-09-11 15:26:26,674 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 111 transitions. Word has length 14 [2020-09-11 15:26:26,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:26:26,675 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 111 transitions. [2020-09-11 15:26:26,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 15:26:26,675 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 111 transitions. [2020-09-11 15:26:26,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-11 15:26:26,676 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:26:26,676 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:26:26,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-11 15:26:26,677 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:26:26,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:26:26,677 INFO L82 PathProgramCache]: Analyzing trace with hash -610616562, now seen corresponding path program 2 times [2020-09-11 15:26:26,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:26:26,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163515012] [2020-09-11 15:26:26,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:26:26,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:26:26,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:26:26,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163515012] [2020-09-11 15:26:26,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:26:26,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:26:26,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319174228] [2020-09-11 15:26:26,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:26:26,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:26:26,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:26:26,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:26:26,752 INFO L87 Difference]: Start difference. First operand 65 states and 111 transitions. Second operand 4 states. [2020-09-11 15:26:26,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:26:26,778 INFO L93 Difference]: Finished difference Result 71 states and 116 transitions. [2020-09-11 15:26:26,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 15:26:26,778 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-11 15:26:26,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:26:26,779 INFO L225 Difference]: With dead ends: 71 [2020-09-11 15:26:26,779 INFO L226 Difference]: Without dead ends: 64 [2020-09-11 15:26:26,780 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 [2020-09-11 15:26:26,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-09-11 15:26:26,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-09-11 15:26:26,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-11 15:26:26,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 106 transitions. [2020-09-11 15:26:26,787 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 106 transitions. Word has length 14 [2020-09-11 15:26:26,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:26:26,787 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 106 transitions. [2020-09-11 15:26:26,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:26:26,788 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 106 transitions. [2020-09-11 15:26:26,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-11 15:26:26,789 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:26:26,789 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:26:26,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-11 15:26:26,790 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:26:26,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:26:26,790 INFO L82 PathProgramCache]: Analyzing trace with hash -375565572, now seen corresponding path program 3 times [2020-09-11 15:26:26,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:26:26,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371366184] [2020-09-11 15:26:26,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:26:26,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:26:26,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:26:26,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371366184] [2020-09-11 15:26:26,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:26:26,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 15:26:26,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720564542] [2020-09-11 15:26:26,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-11 15:26:26,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:26:26,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-11 15:26:26,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-11 15:26:26,941 INFO L87 Difference]: Start difference. First operand 63 states and 106 transitions. Second operand 6 states. [2020-09-11 15:26:26,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:26:26,973 INFO L93 Difference]: Finished difference Result 58 states and 100 transitions. [2020-09-11 15:26:26,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 15:26:26,973 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-09-11 15:26:26,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:26:26,976 INFO L225 Difference]: With dead ends: 58 [2020-09-11 15:26:26,976 INFO L226 Difference]: Without dead ends: 0 [2020-09-11 15:26:26,976 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 [2020-09-11 15:26:26,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-11 15:26:26,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-11 15:26:26,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-11 15:26:26,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-11 15:26:26,979 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-09-11 15:26:26,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:26:26,979 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-11 15:26:26,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-11 15:26:26,979 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-11 15:26:26,979 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-11 15:26:26,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-11 15:26:26,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 03:26:26 BasicIcfg [2020-09-11 15:26:26,984 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 15:26:26,986 INFO L168 Benchmark]: Toolchain (without parser) took 5156.46 ms. Allocated memory was 140.5 MB in the beginning and 248.0 MB in the end (delta: 107.5 MB). Free memory was 102.1 MB in the beginning and 150.0 MB in the end (delta: -47.8 MB). Peak memory consumption was 59.6 MB. Max. memory is 7.1 GB. [2020-09-11 15:26:26,987 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-11 15:26:26,988 INFO L168 Benchmark]: CACSL2BoogieTranslator took 864.34 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 101.4 MB in the beginning and 161.9 MB in the end (delta: -60.5 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2020-09-11 15:26:26,989 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.05 ms. Allocated memory is still 203.9 MB. Free memory was 161.9 MB in the beginning and 159.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-11 15:26:26,989 INFO L168 Benchmark]: Boogie Preprocessor took 31.78 ms. Allocated memory is still 203.9 MB. Free memory was 159.9 MB in the beginning and 158.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-11 15:26:26,990 INFO L168 Benchmark]: RCFGBuilder took 440.68 ms. Allocated memory is still 203.9 MB. Free memory was 158.0 MB in the beginning and 136.8 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. [2020-09-11 15:26:26,991 INFO L168 Benchmark]: TraceAbstraction took 3740.85 ms. Allocated memory was 203.9 MB in the beginning and 248.0 MB in the end (delta: 44.0 MB). Free memory was 136.2 MB in the beginning and 150.0 MB in the end (delta: -13.8 MB). Peak memory consumption was 30.2 MB. Max. memory is 7.1 GB. [2020-09-11 15:26:26,995 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 864.34 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 101.4 MB in the beginning and 161.9 MB in the end (delta: -60.5 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 61.05 ms. Allocated memory is still 203.9 MB. Free memory was 161.9 MB in the beginning and 159.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.78 ms. Allocated memory is still 203.9 MB. Free memory was 159.9 MB in the beginning and 158.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 440.68 ms. Allocated memory is still 203.9 MB. Free memory was 158.0 MB in the beginning and 136.8 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3740.85 ms. Allocated memory was 203.9 MB in the beginning and 248.0 MB in the end (delta: 44.0 MB). Free memory was 136.2 MB in the beginning and 150.0 MB in the end (delta: -13.8 MB). Peak memory consumption was 30.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 75 ProgramPointsBefore, 30 ProgramPointsAfterwards, 67 TransitionsBefore, 20 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 6 FixpointIterations, 12 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 621 VarBasedMoverChecksPositive, 32 VarBasedMoverChecksNegative, 16 SemBasedMoverChecksPositive, 27 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 1818 CheckedPairsTotal, 52 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, 66 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 179 SDtfs, 120 SDslu, 194 SDs, 0 SdLazy, 99 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred 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, 4 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 3056 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...