/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/safe014_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 11:19:12,189 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 11:19:12,193 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 11:19:12,237 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 11:19:12,238 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 11:19:12,250 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 11:19:12,251 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 11:19:12,254 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 11:19:12,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 11:19:12,260 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 11:19:12,262 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 11:19:12,265 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 11:19:12,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 11:19:12,268 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 11:19:12,271 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 11:19:12,272 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 11:19:12,274 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 11:19:12,275 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 11:19:12,277 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 11:19:12,283 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 11:19:12,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 11:19:12,287 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 11:19:12,288 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 11:19:12,289 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 11:19:12,294 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 11:19:12,295 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 11:19:12,295 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 11:19:12,298 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 11:19:12,299 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 11:19:12,301 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 11:19:12,301 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 11:19:12,302 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 11:19:12,302 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 11:19:12,303 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 11:19:12,304 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 11:19:12,305 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 11:19:12,305 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 11:19:12,305 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 11:19:12,306 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 11:19:12,307 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 11:19:12,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 11:19:12,309 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 [2020-10-16 11:19:12,354 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 11:19:12,355 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 11:19:12,357 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 11:19:12,358 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 11:19:12,358 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 11:19:12,358 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 11:19:12,359 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 11:19:12,359 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 11:19:12,359 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 11:19:12,359 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 11:19:12,360 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 11:19:12,361 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 11:19:12,361 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 11:19:12,361 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 11:19:12,361 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 11:19:12,362 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 11:19:12,362 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 11:19:12,362 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 11:19:12,362 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 11:19:12,363 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 11:19:12,363 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 11:19:12,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 11:19:12,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 11:19:12,363 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 11:19:12,364 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 11:19:12,364 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 11:19:12,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 11:19:12,364 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 11:19:12,364 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-16 11:19:12,364 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 11:19:12,647 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 11:19:12,657 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 11:19:12,660 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 11:19:12,661 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 11:19:12,663 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 11:19:12,664 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_tso.opt.i [2020-10-16 11:19:12,742 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/511c57fc5/f4e3a5f0e44e4a40bcef574dc7bbf384/FLAG9f024a143 [2020-10-16 11:19:13,267 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 11:19:13,268 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe014_tso.opt.i [2020-10-16 11:19:13,302 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/511c57fc5/f4e3a5f0e44e4a40bcef574dc7bbf384/FLAG9f024a143 [2020-10-16 11:19:13,572 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/511c57fc5/f4e3a5f0e44e4a40bcef574dc7bbf384 [2020-10-16 11:19:13,580 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 11:19:13,583 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 11:19:13,584 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 11:19:13,584 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 11:19:13,590 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 11:19:13,591 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:19:13" (1/1) ... [2020-10-16 11:19:13,594 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@533a647f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:13, skipping insertion in model container [2020-10-16 11:19:13,594 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:19:13" (1/1) ... [2020-10-16 11:19:13,602 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 11:19:13,652 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 11:19:14,083 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:19:14,102 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 11:19:14,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:19:14,343 INFO L208 MainTranslator]: Completed translation [2020-10-16 11:19:14,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:14 WrapperNode [2020-10-16 11:19:14,344 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 11:19:14,345 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 11:19:14,345 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 11:19:14,345 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 11:19:14,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:14" (1/1) ... [2020-10-16 11:19:14,370 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:14" (1/1) ... [2020-10-16 11:19:14,394 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 11:19:14,394 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 11:19:14,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 11:19:14,395 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 11:19:14,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:14" (1/1) ... [2020-10-16 11:19:14,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:14" (1/1) ... [2020-10-16 11:19:14,405 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:14" (1/1) ... [2020-10-16 11:19:14,406 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:14" (1/1) ... [2020-10-16 11:19:14,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:14" (1/1) ... [2020-10-16 11:19:14,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:14" (1/1) ... [2020-10-16 11:19:14,417 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:14" (1/1) ... [2020-10-16 11:19:14,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 11:19:14,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 11:19:14,421 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 11:19:14,421 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 11:19:14,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:14" (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 [2020-10-16 11:19:14,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 11:19:14,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 11:19:14,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 11:19:14,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 11:19:14,487 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 11:19:14,488 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 11:19:14,488 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 11:19:14,489 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 11:19:14,489 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 11:19:14,490 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 11:19:14,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 11:19:14,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 11:19:14,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 11:19:14,492 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 11:19:14,870 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 11:19:14,870 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 11:19:14,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:19:14 BoogieIcfgContainer [2020-10-16 11:19:14,873 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 11:19:14,874 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 11:19:14,875 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 11:19:14,878 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 11:19:14,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 11:19:13" (1/3) ... [2020-10-16 11:19:14,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@250cda51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:19:14, skipping insertion in model container [2020-10-16 11:19:14,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:14" (2/3) ... [2020-10-16 11:19:14,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@250cda51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:19:14, skipping insertion in model container [2020-10-16 11:19:14,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:19:14" (3/3) ... [2020-10-16 11:19:14,883 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_tso.opt.i [2020-10-16 11:19:14,895 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 11:19:14,896 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 11:19:14,904 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 11:19:14,905 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 11:19:14,933 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:14,933 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:14,934 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:14,934 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:14,935 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:14,935 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:14,936 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:14,936 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:14,936 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:14,936 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:14,937 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:14,937 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:14,938 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:14,938 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:14,938 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:14,938 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:14,939 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:14,939 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:14,943 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:14,944 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:14,944 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:14,944 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:14,953 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:14,953 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:14,954 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:14,954 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:14,958 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:14,958 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:14,958 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:14,959 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:14,961 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 11:19:14,976 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 11:19:14,998 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:19:14,998 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:19:14,999 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 11:19:14,999 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:19:14,999 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:19:14,999 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:19:14,999 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:19:15,000 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:19:15,014 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 11:19:15,017 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 11:19:15,020 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 11:19:15,022 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 11:19:15,068 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-16 11:19:15,068 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 11:19:15,074 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 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. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 11:19:15,077 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-16 11:19:16,768 INFO L132 LiptonReduction]: Checked pairs total: 2810 [2020-10-16 11:19:16,768 INFO L134 LiptonReduction]: Total number of compositions: 60 [2020-10-16 11:19:16,775 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-16 11:19:16,802 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-16 11:19:16,805 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-16 11:19:16,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 11:19:16,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:19:16,814 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:19:16,814 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:19:16,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:19:16,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 1 times [2020-10-16 11:19:16,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:19:16,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794719524] [2020-10-16 11:19:16,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:19:16,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:19:17,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:19:17,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794719524] [2020-10-16 11:19:17,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:19:17,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 11:19:17,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984345801] [2020-10-16 11:19:17,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:19:17,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:19:17,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:19:17,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:19:17,072 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-16 11:19:17,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:19:17,125 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-16 11:19:17,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:19:17,127 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-16 11:19:17,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:19:17,144 INFO L225 Difference]: With dead ends: 282 [2020-10-16 11:19:17,144 INFO L226 Difference]: Without dead ends: 218 [2020-10-16 11:19:17,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:19:17,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-16 11:19:17,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-16 11:19:17,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-16 11:19:17,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-16 11:19:17,214 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-16 11:19:17,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:19:17,215 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-16 11:19:17,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:19:17,215 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-16 11:19:17,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 11:19:17,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:19:17,217 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:19:17,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 11:19:17,217 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:19:17,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:19:17,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1035713695, now seen corresponding path program 1 times [2020-10-16 11:19:17,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:19:17,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458894871] [2020-10-16 11:19:17,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:19:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:19:17,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:19:17,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458894871] [2020-10-16 11:19:17,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:19:17,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:19:17,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349430195] [2020-10-16 11:19:17,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:19:17,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:19:17,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:19:17,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:19:17,353 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-10-16 11:19:17,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:19:17,383 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-10-16 11:19:17,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 11:19:17,384 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-16 11:19:17,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:19:17,386 INFO L225 Difference]: With dead ends: 242 [2020-10-16 11:19:17,386 INFO L226 Difference]: Without dead ends: 116 [2020-10-16 11:19:17,387 INFO L677 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 [2020-10-16 11:19:17,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-16 11:19:17,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-10-16 11:19:17,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-16 11:19:17,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 284 transitions. [2020-10-16 11:19:17,408 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 284 transitions. Word has length 9 [2020-10-16 11:19:17,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:19:17,408 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 284 transitions. [2020-10-16 11:19:17,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:19:17,409 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 284 transitions. [2020-10-16 11:19:17,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 11:19:17,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:19:17,410 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:19:17,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 11:19:17,410 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:19:17,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:19:17,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1517475135, now seen corresponding path program 1 times [2020-10-16 11:19:17,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:19:17,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055652798] [2020-10-16 11:19:17,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:19:17,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:19:17,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:19:17,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055652798] [2020-10-16 11:19:17,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:19:17,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:19:17,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371648286] [2020-10-16 11:19:17,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:19:17,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:19:17,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:19:17,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:19:17,513 INFO L87 Difference]: Start difference. First operand 116 states and 284 transitions. Second operand 4 states. [2020-10-16 11:19:17,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:19:17,555 INFO L93 Difference]: Finished difference Result 164 states and 394 transitions. [2020-10-16 11:19:17,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 11:19:17,556 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-16 11:19:17,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:19:17,558 INFO L225 Difference]: With dead ends: 164 [2020-10-16 11:19:17,558 INFO L226 Difference]: Without dead ends: 92 [2020-10-16 11:19:17,558 INFO L677 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 [2020-10-16 11:19:17,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-16 11:19:17,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-10-16 11:19:17,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-16 11:19:17,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 214 transitions. [2020-10-16 11:19:17,567 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 214 transitions. Word has length 11 [2020-10-16 11:19:17,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:19:17,568 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 214 transitions. [2020-10-16 11:19:17,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:19:17,568 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 214 transitions. [2020-10-16 11:19:17,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 11:19:17,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:19:17,569 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:19:17,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 11:19:17,570 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:19:17,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:19:17,570 INFO L82 PathProgramCache]: Analyzing trace with hash -142823170, now seen corresponding path program 1 times [2020-10-16 11:19:17,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:19:17,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491170191] [2020-10-16 11:19:17,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:19:17,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:19:17,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:19:17,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491170191] [2020-10-16 11:19:17,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:19:17,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:19:17,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290418788] [2020-10-16 11:19:17,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:19:17,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:19:17,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:19:17,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:19:17,640 INFO L87 Difference]: Start difference. First operand 92 states and 214 transitions. Second operand 4 states. [2020-10-16 11:19:17,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:19:17,668 INFO L93 Difference]: Finished difference Result 122 states and 275 transitions. [2020-10-16 11:19:17,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 11:19:17,668 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-16 11:19:17,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:19:17,669 INFO L225 Difference]: With dead ends: 122 [2020-10-16 11:19:17,669 INFO L226 Difference]: Without dead ends: 68 [2020-10-16 11:19:17,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:19:17,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-16 11:19:17,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-16 11:19:17,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-16 11:19:17,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-10-16 11:19:17,676 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 12 [2020-10-16 11:19:17,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:19:17,676 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-10-16 11:19:17,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:19:17,676 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-10-16 11:19:17,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 11:19:17,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:19:17,677 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:19:17,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 11:19:17,678 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:19:17,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:19:17,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1246852910, now seen corresponding path program 1 times [2020-10-16 11:19:17,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:19:17,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733680236] [2020-10-16 11:19:17,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:19:17,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:19:17,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:19:17,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733680236] [2020-10-16 11:19:17,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:19:17,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:19:17,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107375441] [2020-10-16 11:19:17,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:19:17,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:19:17,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:19:17,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:19:17,790 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand 4 states. [2020-10-16 11:19:17,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:19:17,838 INFO L93 Difference]: Finished difference Result 81 states and 157 transitions. [2020-10-16 11:19:17,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 11:19:17,839 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-16 11:19:17,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:19:17,840 INFO L225 Difference]: With dead ends: 81 [2020-10-16 11:19:17,840 INFO L226 Difference]: Without dead ends: 59 [2020-10-16 11:19:17,841 INFO L677 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 [2020-10-16 11:19:17,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-16 11:19:17,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-16 11:19:17,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-16 11:19:17,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2020-10-16 11:19:17,853 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 13 [2020-10-16 11:19:17,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:19:17,853 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2020-10-16 11:19:17,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:19:17,853 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2020-10-16 11:19:17,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 11:19:17,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:19:17,854 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:19:17,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 11:19:17,855 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:19:17,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:19:17,858 INFO L82 PathProgramCache]: Analyzing trace with hash 433937672, now seen corresponding path program 1 times [2020-10-16 11:19:17,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:19:17,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456299878] [2020-10-16 11:19:17,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:19:17,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:19:17,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:19:17,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456299878] [2020-10-16 11:19:17,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:19:17,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:19:17,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363177703] [2020-10-16 11:19:17,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:19:17,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:19:17,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:19:17,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:19:17,980 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand 5 states. [2020-10-16 11:19:18,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:19:18,026 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2020-10-16 11:19:18,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:19:18,028 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-16 11:19:18,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:19:18,028 INFO L225 Difference]: With dead ends: 60 [2020-10-16 11:19:18,028 INFO L226 Difference]: Without dead ends: 45 [2020-10-16 11:19:18,029 INFO L677 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 [2020-10-16 11:19:18,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-16 11:19:18,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-16 11:19:18,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-16 11:19:18,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 74 transitions. [2020-10-16 11:19:18,033 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 74 transitions. Word has length 14 [2020-10-16 11:19:18,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:19:18,034 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 74 transitions. [2020-10-16 11:19:18,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:19:18,034 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 74 transitions. [2020-10-16 11:19:18,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 11:19:18,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:19:18,035 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:19:18,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 11:19:18,035 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:19:18,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:19:18,035 INFO L82 PathProgramCache]: Analyzing trace with hash 567169455, now seen corresponding path program 1 times [2020-10-16 11:19:18,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:19:18,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129283466] [2020-10-16 11:19:18,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:19:18,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:19:18,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:19:18,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129283466] [2020-10-16 11:19:18,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:19:18,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 11:19:18,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734209759] [2020-10-16 11:19:18,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 11:19:18,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:19:18,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 11:19:18,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 11:19:18,129 INFO L87 Difference]: Start difference. First operand 45 states and 74 transitions. Second operand 6 states. [2020-10-16 11:19:18,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:19:18,180 INFO L93 Difference]: Finished difference Result 42 states and 66 transitions. [2020-10-16 11:19:18,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 11:19:18,181 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-16 11:19:18,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:19:18,181 INFO L225 Difference]: With dead ends: 42 [2020-10-16 11:19:18,182 INFO L226 Difference]: Without dead ends: 36 [2020-10-16 11:19:18,182 INFO L677 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 [2020-10-16 11:19:18,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-16 11:19:18,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-16 11:19:18,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-16 11:19:18,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-10-16 11:19:18,185 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-10-16 11:19:18,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:19:18,186 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-10-16 11:19:18,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 11:19:18,186 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-10-16 11:19:18,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 11:19:18,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:19:18,187 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:19:18,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 11:19:18,188 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:19:18,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:19:18,188 INFO L82 PathProgramCache]: Analyzing trace with hash -412776350, now seen corresponding path program 1 times [2020-10-16 11:19:18,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:19:18,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113300106] [2020-10-16 11:19:18,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:19:18,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:19:18,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:19:18,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113300106] [2020-10-16 11:19:18,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:19:18,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:19:18,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245877478] [2020-10-16 11:19:18,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:19:18,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:19:18,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:19:18,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:19:18,228 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-10-16 11:19:18,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:19:18,241 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-10-16 11:19:18,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 11:19:18,242 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-16 11:19:18,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:19:18,243 INFO L225 Difference]: With dead ends: 35 [2020-10-16 11:19:18,243 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 11:19:18,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:19:18,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 11:19:18,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 11:19:18,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 11:19:18,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 11:19:18,245 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-16 11:19:18,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:19:18,245 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 11:19:18,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:19:18,246 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 11:19:18,246 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 11:19:18,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 11:19:18,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 11:19:18 BasicIcfg [2020-10-16 11:19:18,250 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 11:19:18,253 INFO L168 Benchmark]: Toolchain (without parser) took 4669.88 ms. Allocated memory was 141.0 MB in the beginning and 245.9 MB in the end (delta: 104.9 MB). Free memory was 103.1 MB in the beginning and 145.1 MB in the end (delta: -41.9 MB). Peak memory consumption was 63.0 MB. Max. memory is 7.1 GB. [2020-10-16 11:19:18,254 INFO L168 Benchmark]: CDTParser took 0.61 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 11:19:18,255 INFO L168 Benchmark]: CACSL2BoogieTranslator took 760.66 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 102.7 MB in the beginning and 163.0 MB in the end (delta: -60.3 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. [2020-10-16 11:19:18,256 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.41 ms. Allocated memory is still 204.5 MB. Free memory was 163.0 MB in the beginning and 161.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 11:19:18,257 INFO L168 Benchmark]: Boogie Preprocessor took 26.03 ms. Allocated memory is still 204.5 MB. Free memory was 161.0 MB in the beginning and 159.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 11:19:18,258 INFO L168 Benchmark]: RCFGBuilder took 452.27 ms. Allocated memory is still 204.5 MB. Free memory was 159.0 MB in the beginning and 136.9 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-10-16 11:19:18,258 INFO L168 Benchmark]: TraceAbstraction took 3375.86 ms. Allocated memory was 204.5 MB in the beginning and 245.9 MB in the end (delta: 41.4 MB). Free memory was 136.3 MB in the beginning and 145.1 MB in the end (delta: -8.8 MB). Peak memory consumption was 32.6 MB. Max. memory is 7.1 GB. [2020-10-16 11:19:18,263 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 760.66 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 102.7 MB in the beginning and 163.0 MB in the end (delta: -60.3 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.41 ms. Allocated memory is still 204.5 MB. Free memory was 163.0 MB in the beginning and 161.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.03 ms. Allocated memory is still 204.5 MB. Free memory was 161.0 MB in the beginning and 159.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 452.27 ms. Allocated memory is still 204.5 MB. Free memory was 159.0 MB in the beginning and 136.9 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3375.86 ms. Allocated memory was 204.5 MB in the beginning and 245.9 MB in the end (delta: 41.4 MB). Free memory was 136.3 MB in the beginning and 145.1 MB in the end (delta: -8.8 MB). Peak memory consumption was 32.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 843 VarBasedMoverChecksPositive, 42 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 36 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 61 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.7s, 78 PlacesBefore, 31 PlacesAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 60 TotalNumberOfCompositions, 2810 MoverChecksTotal - 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, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.2s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 138 SDtfs, 138 SDslu, 173 SDs, 0 SdLazy, 111 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s 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, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 3141 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...