/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe003_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 02:05:27,186 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 02:05:27,188 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 02:05:27,201 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 02:05:27,201 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 02:05:27,202 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 02:05:27,204 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 02:05:27,205 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 02:05:27,207 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 02:05:27,208 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 02:05:27,209 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 02:05:27,210 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 02:05:27,210 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 02:05:27,211 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 02:05:27,212 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 02:05:27,213 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 02:05:27,214 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 02:05:27,215 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 02:05:27,217 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 02:05:27,219 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 02:05:27,221 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 02:05:27,222 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 02:05:27,223 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 02:05:27,224 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 02:05:27,227 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 02:05:27,227 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 02:05:27,227 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 02:05:27,228 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 02:05:27,229 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 02:05:27,230 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 02:05:27,230 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 02:05:27,231 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 02:05:27,232 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 02:05:27,233 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 02:05:27,234 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 02:05:27,235 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 02:05:27,235 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 02:05:27,236 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 02:05:27,236 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 02:05:27,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 02:05:27,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 02:05:27,239 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf [2020-04-18 02:05:27,254 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 02:05:27,254 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 02:05:27,255 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 02:05:27,255 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 02:05:27,256 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 02:05:27,256 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 02:05:27,256 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 02:05:27,256 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 02:05:27,257 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 02:05:27,257 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 02:05:27,257 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 02:05:27,257 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 02:05:27,257 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 02:05:27,257 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 02:05:27,258 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 02:05:27,258 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 02:05:27,258 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 02:05:27,258 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 02:05:27,258 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 02:05:27,259 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 02:05:27,259 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 02:05:27,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:05:27,259 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 02:05:27,259 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 02:05:27,260 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 02:05:27,260 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 02:05:27,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 02:05:27,260 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 02:05:27,260 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 02:05:27,261 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:05:27,518 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:05:27,536 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:05:27,540 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:05:27,542 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:05:27,542 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:05:27,543 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe003_tso.opt.i [2020-04-18 02:05:27,614 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5512606f7/8121c25be9d64488b06723db889b0700/FLAGdfc3fe8bb [2020-04-18 02:05:28,137 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:05:28,138 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe003_tso.opt.i [2020-04-18 02:05:28,154 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5512606f7/8121c25be9d64488b06723db889b0700/FLAGdfc3fe8bb [2020-04-18 02:05:28,448 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5512606f7/8121c25be9d64488b06723db889b0700 [2020-04-18 02:05:28,459 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:05:28,475 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:05:28,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:05:28,477 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:05:28,481 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:05:28,484 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:05:28" (1/1) ... [2020-04-18 02:05:28,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10143938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:05:28, skipping insertion in model container [2020-04-18 02:05:28,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:05:28" (1/1) ... [2020-04-18 02:05:28,497 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:05:28,552 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:05:29,076 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:05:29,096 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:05:29,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:05:29,239 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:05:29,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:05:29 WrapperNode [2020-04-18 02:05:29,240 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:05:29,241 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:05:29,241 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:05:29,241 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:05:29,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:05:29" (1/1) ... [2020-04-18 02:05:29,268 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:05:29" (1/1) ... [2020-04-18 02:05:29,292 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:05:29,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:05:29,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:05:29,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:05:29,301 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:05:29" (1/1) ... [2020-04-18 02:05:29,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:05:29" (1/1) ... [2020-04-18 02:05:29,304 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:05:29" (1/1) ... [2020-04-18 02:05:29,304 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:05:29" (1/1) ... [2020-04-18 02:05:29,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:05:29" (1/1) ... [2020-04-18 02:05:29,313 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:05:29" (1/1) ... [2020-04-18 02:05:29,315 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:05:29" (1/1) ... [2020-04-18 02:05:29,318 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:05:29,319 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:05:29,319 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:05:29,319 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:05:29,320 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:05:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:05:29,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:05:29,385 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:05:29,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:05:29,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:05:29,386 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:05:29,386 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:05:29,386 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:05:29,386 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:05:29,387 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 02:05:29,387 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 02:05:29,387 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:05:29,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:05:29,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:05:29,389 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 02:05:29,817 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:05:29,818 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:05:29,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:05:29 BoogieIcfgContainer [2020-04-18 02:05:29,823 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:05:29,824 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:05:29,824 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:05:29,827 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:05:29,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:05:28" (1/3) ... [2020-04-18 02:05:29,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@95e23dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:05:29, skipping insertion in model container [2020-04-18 02:05:29,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:05:29" (2/3) ... [2020-04-18 02:05:29,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@95e23dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:05:29, skipping insertion in model container [2020-04-18 02:05:29,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:05:29" (3/3) ... [2020-04-18 02:05:29,832 INFO L109 eAbstractionObserver]: Analyzing ICFG safe003_tso.opt.i [2020-04-18 02:05:29,844 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:05:29,844 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:05:29,851 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:05:29,852 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:05:29,882 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:29,882 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:29,883 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:29,883 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:29,884 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:29,884 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:29,886 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:29,886 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:29,886 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:29,887 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:29,887 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:29,887 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:29,888 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:29,889 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:29,889 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:29,889 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:29,890 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:29,890 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:29,898 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:29,899 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:29,899 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:29,899 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:29,907 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:29,907 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:29,907 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:29,908 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:29,917 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:29,917 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:29,917 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:29,918 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:05:29,934 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 02:05:29,958 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:05:29,958 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:05:29,958 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:05:29,958 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:05:29,958 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:05:29,959 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:05:29,959 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:05:29,959 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:05:29,980 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-18 02:05:29,982 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 02:05:30,046 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 02:05:30,047 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:05:30,053 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. [2020-04-18 02:05:30,056 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 02:05:30,088 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 02:05:30,088 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:05:30,089 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. [2020-04-18 02:05:30,091 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 02:05:30,092 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:05:31,549 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-04-18 02:05:31,699 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-04-18 02:05:31,757 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2700 [2020-04-18 02:05:31,758 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-04-18 02:05:31,762 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 02:05:31,807 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 02:05:31,809 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 02:05:31,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 02:05:31,822 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:05:31,824 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:05:31,824 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:05:31,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:05:31,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 1 times [2020-04-18 02:05:31,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:05:31,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823799160] [2020-04-18 02:05:31,842 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:05:31,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:05:32,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:05:32,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823799160] [2020-04-18 02:05:32,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:05:32,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:05:32,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491271318] [2020-04-18 02:05:32,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:05:32,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:05:32,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:05:32,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:05:32,151 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 02:05:32,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:05:32,196 INFO L93 Difference]: Finished difference Result 266 states and 752 transitions. [2020-04-18 02:05:32,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:05:32,198 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 02:05:32,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:05:32,227 INFO L225 Difference]: With dead ends: 266 [2020-04-18 02:05:32,228 INFO L226 Difference]: Without dead ends: 202 [2020-04-18 02:05:32,232 INFO L678 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 [2020-04-18 02:05:32,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-04-18 02:05:32,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-04-18 02:05:32,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-04-18 02:05:32,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-04-18 02:05:32,325 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 8 [2020-04-18 02:05:32,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:05:32,326 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-04-18 02:05:32,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:05:32,326 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-04-18 02:05:32,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 02:05:32,328 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:05:32,328 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:05:32,329 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:05:32,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:05:32,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1613616234, now seen corresponding path program 1 times [2020-04-18 02:05:32,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:05:32,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144684965] [2020-04-18 02:05:32,330 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:05:32,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:05:32,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:05:32,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144684965] [2020-04-18 02:05:32,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:05:32,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:05:32,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988503789] [2020-04-18 02:05:32,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:05:32,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:05:32,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:05:32,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:05:32,411 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 4 states. [2020-04-18 02:05:32,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:05:32,444 INFO L93 Difference]: Finished difference Result 254 states and 666 transitions. [2020-04-18 02:05:32,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:05:32,444 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-18 02:05:32,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:05:32,447 INFO L225 Difference]: With dead ends: 254 [2020-04-18 02:05:32,447 INFO L226 Difference]: Without dead ends: 190 [2020-04-18 02:05:32,448 INFO L678 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 [2020-04-18 02:05:32,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-04-18 02:05:32,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2020-04-18 02:05:32,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-04-18 02:05:32,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 502 transitions. [2020-04-18 02:05:32,464 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 502 transitions. Word has length 10 [2020-04-18 02:05:32,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:05:32,464 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 502 transitions. [2020-04-18 02:05:32,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:05:32,465 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 502 transitions. [2020-04-18 02:05:32,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 02:05:32,466 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:05:32,467 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:05:32,467 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:05:32,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:05:32,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1111108671, now seen corresponding path program 1 times [2020-04-18 02:05:32,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:05:32,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565221229] [2020-04-18 02:05:32,468 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:05:32,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:05:32,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:05:32,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565221229] [2020-04-18 02:05:32,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:05:32,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:05:32,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595277909] [2020-04-18 02:05:32,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:05:32,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:05:32,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:05:32,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:05:32,556 INFO L87 Difference]: Start difference. First operand 190 states and 502 transitions. Second operand 4 states. [2020-04-18 02:05:32,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:05:32,582 INFO L93 Difference]: Finished difference Result 262 states and 670 transitions. [2020-04-18 02:05:32,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:05:32,583 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 02:05:32,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:05:32,585 INFO L225 Difference]: With dead ends: 262 [2020-04-18 02:05:32,585 INFO L226 Difference]: Without dead ends: 202 [2020-04-18 02:05:32,586 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:05:32,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-04-18 02:05:32,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 178. [2020-04-18 02:05:32,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-04-18 02:05:32,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 452 transitions. [2020-04-18 02:05:32,601 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 452 transitions. Word has length 11 [2020-04-18 02:05:32,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:05:32,601 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 452 transitions. [2020-04-18 02:05:32,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:05:32,601 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 452 transitions. [2020-04-18 02:05:32,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 02:05:32,603 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:05:32,603 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:05:32,604 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:05:32,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:05:32,604 INFO L82 PathProgramCache]: Analyzing trace with hash -143018253, now seen corresponding path program 1 times [2020-04-18 02:05:32,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:05:32,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191301856] [2020-04-18 02:05:32,605 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:05:32,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:05:32,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:05:32,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191301856] [2020-04-18 02:05:32,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:05:32,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:05:32,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422023953] [2020-04-18 02:05:32,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:05:32,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:05:32,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:05:32,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:05:32,665 INFO L87 Difference]: Start difference. First operand 178 states and 452 transitions. Second operand 4 states. [2020-04-18 02:05:32,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:05:32,688 INFO L93 Difference]: Finished difference Result 262 states and 666 transitions. [2020-04-18 02:05:32,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:05:32,688 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 02:05:32,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:05:32,690 INFO L225 Difference]: With dead ends: 262 [2020-04-18 02:05:32,690 INFO L226 Difference]: Without dead ends: 174 [2020-04-18 02:05:32,691 INFO L678 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 [2020-04-18 02:05:32,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-04-18 02:05:32,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2020-04-18 02:05:32,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-04-18 02:05:32,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 438 transitions. [2020-04-18 02:05:32,702 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 438 transitions. Word has length 12 [2020-04-18 02:05:32,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:05:32,702 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 438 transitions. [2020-04-18 02:05:32,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:05:32,702 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 438 transitions. [2020-04-18 02:05:32,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 02:05:32,704 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:05:32,704 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:05:32,705 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:05:32,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:05:32,707 INFO L82 PathProgramCache]: Analyzing trace with hash -178767453, now seen corresponding path program 2 times [2020-04-18 02:05:32,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:05:32,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378934504] [2020-04-18 02:05:32,708 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:05:32,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:05:32,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:05:32,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378934504] [2020-04-18 02:05:32,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:05:32,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:05:32,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965698449] [2020-04-18 02:05:32,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:05:32,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:05:32,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:05:32,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:05:32,771 INFO L87 Difference]: Start difference. First operand 174 states and 438 transitions. Second operand 4 states. [2020-04-18 02:05:32,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:05:32,805 INFO L93 Difference]: Finished difference Result 226 states and 556 transitions. [2020-04-18 02:05:32,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:05:32,806 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 02:05:32,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:05:32,807 INFO L225 Difference]: With dead ends: 226 [2020-04-18 02:05:32,807 INFO L226 Difference]: Without dead ends: 112 [2020-04-18 02:05:32,808 INFO L678 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 [2020-04-18 02:05:32,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-04-18 02:05:32,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2020-04-18 02:05:32,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-04-18 02:05:32,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 261 transitions. [2020-04-18 02:05:32,814 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 261 transitions. Word has length 12 [2020-04-18 02:05:32,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:05:32,814 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 261 transitions. [2020-04-18 02:05:32,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:05:32,815 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 261 transitions. [2020-04-18 02:05:32,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 02:05:32,816 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:05:32,816 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:05:32,816 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:05:32,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:05:32,817 INFO L82 PathProgramCache]: Analyzing trace with hash 652437482, now seen corresponding path program 1 times [2020-04-18 02:05:32,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:05:32,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117931142] [2020-04-18 02:05:32,817 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:05:32,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:05:32,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:05:32,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117931142] [2020-04-18 02:05:32,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:05:32,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:05:32,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004936233] [2020-04-18 02:05:32,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:05:32,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:05:32,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:05:32,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:05:32,887 INFO L87 Difference]: Start difference. First operand 112 states and 261 transitions. Second operand 4 states. [2020-04-18 02:05:32,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:05:32,928 INFO L93 Difference]: Finished difference Result 128 states and 293 transitions. [2020-04-18 02:05:32,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:05:32,929 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-04-18 02:05:32,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:05:32,930 INFO L225 Difference]: With dead ends: 128 [2020-04-18 02:05:32,930 INFO L226 Difference]: Without dead ends: 92 [2020-04-18 02:05:32,931 INFO L678 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 [2020-04-18 02:05:32,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-04-18 02:05:32,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-04-18 02:05:32,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-04-18 02:05:32,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 203 transitions. [2020-04-18 02:05:32,936 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 203 transitions. Word has length 14 [2020-04-18 02:05:32,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:05:32,936 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 203 transitions. [2020-04-18 02:05:32,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:05:32,936 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 203 transitions. [2020-04-18 02:05:32,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 02:05:32,937 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:05:32,937 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:05:32,938 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:05:32,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:05:32,938 INFO L82 PathProgramCache]: Analyzing trace with hash 652264502, now seen corresponding path program 2 times [2020-04-18 02:05:32,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:05:32,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43499351] [2020-04-18 02:05:32,939 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:05:32,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:05:32,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:05:32,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43499351] [2020-04-18 02:05:32,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:05:33,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:05:33,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807442395] [2020-04-18 02:05:33,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:05:33,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:05:33,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:05:33,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:05:33,001 INFO L87 Difference]: Start difference. First operand 92 states and 203 transitions. Second operand 4 states. [2020-04-18 02:05:33,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:05:33,033 INFO L93 Difference]: Finished difference Result 116 states and 255 transitions. [2020-04-18 02:05:33,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:05:33,035 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-04-18 02:05:33,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:05:33,036 INFO L225 Difference]: With dead ends: 116 [2020-04-18 02:05:33,036 INFO L226 Difference]: Without dead ends: 82 [2020-04-18 02:05:33,036 INFO L678 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 [2020-04-18 02:05:33,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-04-18 02:05:33,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-04-18 02:05:33,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-04-18 02:05:33,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 174 transitions. [2020-04-18 02:05:33,041 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 174 transitions. Word has length 14 [2020-04-18 02:05:33,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:05:33,042 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 174 transitions. [2020-04-18 02:05:33,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:05:33,042 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 174 transitions. [2020-04-18 02:05:33,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 02:05:33,043 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:05:33,043 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:05:33,043 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:05:33,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:05:33,044 INFO L82 PathProgramCache]: Analyzing trace with hash 616515302, now seen corresponding path program 3 times [2020-04-18 02:05:33,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:05:33,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211735205] [2020-04-18 02:05:33,044 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:05:33,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:05:33,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:05:33,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211735205] [2020-04-18 02:05:33,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:05:33,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:05:33,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963172929] [2020-04-18 02:05:33,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:05:33,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:05:33,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:05:33,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:05:33,101 INFO L87 Difference]: Start difference. First operand 82 states and 174 transitions. Second operand 3 states. [2020-04-18 02:05:33,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:05:33,123 INFO L93 Difference]: Finished difference Result 74 states and 154 transitions. [2020-04-18 02:05:33,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:05:33,124 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-04-18 02:05:33,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:05:33,124 INFO L225 Difference]: With dead ends: 74 [2020-04-18 02:05:33,124 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:05:33,125 INFO L678 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 [2020-04-18 02:05:33,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:05:33,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:05:33,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:05:33,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:05:33,126 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-04-18 02:05:33,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:05:33,126 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:05:33,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:05:33,126 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:05:33,127 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:05:33,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:05:33 BasicIcfg [2020-04-18 02:05:33,130 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:05:33,132 INFO L168 Benchmark]: Toolchain (without parser) took 4672.02 ms. Allocated memory was 137.9 MB in the beginning and 247.5 MB in the end (delta: 109.6 MB). Free memory was 101.3 MB in the beginning and 214.2 MB in the end (delta: -112.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 02:05:33,133 INFO L168 Benchmark]: CDTParser took 0.46 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-18 02:05:33,134 INFO L168 Benchmark]: CACSL2BoogieTranslator took 763.38 ms. Allocated memory was 137.9 MB in the beginning and 203.9 MB in the end (delta: 66.1 MB). Free memory was 99.3 MB in the beginning and 160.4 MB in the end (delta: -61.1 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2020-04-18 02:05:33,135 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.89 ms. Allocated memory is still 203.9 MB. Free memory was 160.4 MB in the beginning and 158.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 02:05:33,136 INFO L168 Benchmark]: Boogie Preprocessor took 25.57 ms. Allocated memory is still 203.9 MB. Free memory was 158.4 MB in the beginning and 157.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 02:05:33,136 INFO L168 Benchmark]: RCFGBuilder took 504.00 ms. Allocated memory is still 203.9 MB. Free memory was 157.0 MB in the beginning and 135.1 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-04-18 02:05:33,137 INFO L168 Benchmark]: TraceAbstraction took 3306.61 ms. Allocated memory was 203.9 MB in the beginning and 247.5 MB in the end (delta: 43.5 MB). Free memory was 134.4 MB in the beginning and 214.2 MB in the end (delta: -79.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 02:05:33,142 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 763.38 ms. Allocated memory was 137.9 MB in the beginning and 203.9 MB in the end (delta: 66.1 MB). Free memory was 99.3 MB in the beginning and 160.4 MB in the end (delta: -61.1 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 51.89 ms. Allocated memory is still 203.9 MB. Free memory was 160.4 MB in the beginning and 158.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.57 ms. Allocated memory is still 203.9 MB. Free memory was 158.4 MB in the beginning and 157.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 504.00 ms. Allocated memory is still 203.9 MB. Free memory was 157.0 MB in the beginning and 135.1 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3306.61 ms. Allocated memory was 203.9 MB in the beginning and 247.5 MB in the end (delta: 43.5 MB). Free memory was 134.4 MB in the beginning and 214.2 MB in the end (delta: -79.8 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 653 VarBasedMoverChecksPositive, 26 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2700 CheckedPairsTotal, 59 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, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 171 SDtfs, 114 SDslu, 165 SDs, 0 SdLazy, 65 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 24 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 87 ConstructedInterpolants, 0 QuantifiedInterpolants, 2639 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...