/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/safe012_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 17:47:24,213 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 17:47:24,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 17:47:24,226 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 17:47:24,227 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 17:47:24,228 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 17:47:24,229 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 17:47:24,231 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 17:47:24,233 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 17:47:24,233 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 17:47:24,235 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 17:47:24,236 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 17:47:24,237 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 17:47:24,238 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 17:47:24,239 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 17:47:24,243 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 17:47:24,244 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 17:47:24,244 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 17:47:24,246 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 17:47:24,248 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 17:47:24,249 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 17:47:24,250 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 17:47:24,251 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 17:47:24,252 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 17:47:24,254 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 17:47:24,254 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 17:47:24,254 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 17:47:24,255 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 17:47:24,255 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 17:47:24,256 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 17:47:24,257 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 17:47:24,257 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 17:47:24,258 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 17:47:24,259 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 17:47:24,260 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 17:47:24,260 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 17:47:24,261 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 17:47:24,261 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 17:47:24,261 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 17:47:24,262 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 17:47:24,262 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 17:47:24,263 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-04-17 17:47:24,278 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 17:47:24,279 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 17:47:24,280 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 17:47:24,280 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 17:47:24,280 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 17:47:24,280 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 17:47:24,281 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 17:47:24,281 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 17:47:24,281 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 17:47:24,281 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 17:47:24,281 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 17:47:24,281 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 17:47:24,282 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 17:47:24,282 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 17:47:24,282 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 17:47:24,282 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 17:47:24,282 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 17:47:24,283 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 17:47:24,283 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 17:47:24,283 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 17:47:24,283 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 17:47:24,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 17:47:24,283 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 17:47:24,284 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 17:47:24,284 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 17:47:24,284 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 17:47:24,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 17:47:24,284 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 17:47:24,285 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-04-17 17:47:24,285 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 17:47:24,559 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 17:47:24,571 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 17:47:24,575 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 17:47:24,576 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 17:47:24,577 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 17:47:24,577 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.oepc.i [2020-04-17 17:47:24,651 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a8c02211/0bd1cf3284eb453ab19ee4bec39a2808/FLAG4947f6c21 [2020-04-17 17:47:25,142 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 17:47:25,147 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_tso.oepc.i [2020-04-17 17:47:25,160 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a8c02211/0bd1cf3284eb453ab19ee4bec39a2808/FLAG4947f6c21 [2020-04-17 17:47:25,461 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a8c02211/0bd1cf3284eb453ab19ee4bec39a2808 [2020-04-17 17:47:25,469 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 17:47:25,491 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 17:47:25,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 17:47:25,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 17:47:25,496 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 17:47:25,497 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 05:47:25" (1/1) ... [2020-04-17 17:47:25,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56f92f67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:47:25, skipping insertion in model container [2020-04-17 17:47:25,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 05:47:25" (1/1) ... [2020-04-17 17:47:25,509 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 17:47:25,569 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 17:47:26,043 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 17:47:26,058 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 17:47:26,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 17:47:26,210 INFO L208 MainTranslator]: Completed translation [2020-04-17 17:47:26,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:47:26 WrapperNode [2020-04-17 17:47:26,211 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 17:47:26,212 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 17:47:26,212 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 17:47:26,212 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 17:47:26,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:47:26" (1/1) ... [2020-04-17 17:47:26,238 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:47:26" (1/1) ... [2020-04-17 17:47:26,257 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 17:47:26,258 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 17:47:26,258 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 17:47:26,258 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 17:47:26,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:47:26" (1/1) ... [2020-04-17 17:47:26,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:47:26" (1/1) ... [2020-04-17 17:47:26,268 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:47:26" (1/1) ... [2020-04-17 17:47:26,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:47:26" (1/1) ... [2020-04-17 17:47:26,274 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:47:26" (1/1) ... [2020-04-17 17:47:26,276 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:47:26" (1/1) ... [2020-04-17 17:47:26,278 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:47:26" (1/1) ... [2020-04-17 17:47:26,281 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 17:47:26,282 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 17:47:26,282 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 17:47:26,282 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 17:47:26,283 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:47:26" (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 [2020-04-17 17:47:26,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 17:47:26,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 17:47:26,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 17:47:26,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 17:47:26,336 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 17:47:26,336 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 17:47:26,336 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 17:47:26,336 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 17:47:26,336 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 17:47:26,336 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 17:47:26,337 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 17:47:26,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 17:47:26,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 17:47:26,338 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 17:47:26,706 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 17:47:26,706 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 17:47:26,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 05:47:26 BoogieIcfgContainer [2020-04-17 17:47:26,711 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 17:47:26,712 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 17:47:26,712 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 17:47:26,715 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 17:47:26,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 05:47:25" (1/3) ... [2020-04-17 17:47:26,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a98eb20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 05:47:26, skipping insertion in model container [2020-04-17 17:47:26,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:47:26" (2/3) ... [2020-04-17 17:47:26,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a98eb20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 05:47:26, skipping insertion in model container [2020-04-17 17:47:26,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 05:47:26" (3/3) ... [2020-04-17 17:47:26,718 INFO L109 eAbstractionObserver]: Analyzing ICFG safe012_tso.oepc.i [2020-04-17 17:47:26,728 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 17:47:26,729 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 17:47:26,736 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 17:47:26,737 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 17:47:26,770 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:47:26,771 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:47:26,771 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:47:26,771 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:47:26,773 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:47:26,773 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:47:26,774 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:47:26,774 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:47:26,775 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:47:26,775 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:47:26,776 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:47:26,776 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:47:26,777 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:47:26,777 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:47:26,778 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:47:26,778 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:47:26,778 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:47:26,779 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:47:26,784 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:47:26,785 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:47:26,785 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:47:26,785 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:47:26,801 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:47:26,802 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:47:26,802 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:47:26,802 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:47:26,805 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:47:26,805 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:47:26,806 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:47:26,806 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:47:26,818 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 17:47:26,833 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 17:47:26,833 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 17:47:26,833 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 17:47:26,833 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 17:47:26,834 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 17:47:26,834 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 17:47:26,834 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 17:47:26,834 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 17:47:26,848 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 71 transitions, 157 flow [2020-04-17 17:47:26,850 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-17 17:47:26,895 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-17 17:47:26,895 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 17:47:26,900 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 17:47:26,904 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-17 17:47:26,927 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-17 17:47:26,928 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 17:47:26,928 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 17:47:26,931 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-17 17:47:26,932 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 17:47:28,509 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2463 [2020-04-17 17:47:28,510 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-04-17 17:47:28,517 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-04-17 17:47:28,545 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-04-17 17:47:28,547 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-04-17 17:47:28,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 17:47:28,555 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:47:28,556 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:47:28,556 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:47:28,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:47:28,562 INFO L82 PathProgramCache]: Analyzing trace with hash -691335731, now seen corresponding path program 1 times [2020-04-17 17:47:28,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:47:28,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548021090] [2020-04-17 17:47:28,572 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:47:28,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:47:28,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:47:28,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548021090] [2020-04-17 17:47:28,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:47:28,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 17:47:28,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936417363] [2020-04-17 17:47:28,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-17 17:47:28,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:47:28,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-17 17:47:28,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 17:47:28,802 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-04-17 17:47:28,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:47:28,834 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-04-17 17:47:28,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-17 17:47:28,835 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-04-17 17:47:28,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:47:28,853 INFO L225 Difference]: With dead ends: 362 [2020-04-17 17:47:28,853 INFO L226 Difference]: Without dead ends: 298 [2020-04-17 17:47:28,854 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 17:47:28,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-04-17 17:47:28,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-04-17 17:47:28,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-04-17 17:47:28,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-04-17 17:47:28,943 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-04-17 17:47:28,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:47:28,944 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-04-17 17:47:28,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-17 17:47:28,944 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-04-17 17:47:28,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 17:47:28,948 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:47:28,948 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:47:28,948 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:47:28,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:47:28,949 INFO L82 PathProgramCache]: Analyzing trace with hash 43425274, now seen corresponding path program 1 times [2020-04-17 17:47:28,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:47:28,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523686738] [2020-04-17 17:47:28,950 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:47:28,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:47:29,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:47:29,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523686738] [2020-04-17 17:47:29,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:47:29,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 17:47:29,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510150408] [2020-04-17 17:47:29,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 17:47:29,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:47:29,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 17:47:29,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 17:47:29,106 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-04-17 17:47:29,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:47:29,158 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-04-17 17:47:29,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 17:47:29,159 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-17 17:47:29,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:47:29,164 INFO L225 Difference]: With dead ends: 330 [2020-04-17 17:47:29,166 INFO L226 Difference]: Without dead ends: 266 [2020-04-17 17:47:29,167 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 [2020-04-17 17:47:29,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-04-17 17:47:29,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-04-17 17:47:29,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-04-17 17:47:29,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-04-17 17:47:29,214 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-04-17 17:47:29,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:47:29,214 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-04-17 17:47:29,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 17:47:29,215 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-04-17 17:47:29,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 17:47:29,216 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:47:29,217 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:47:29,217 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:47:29,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:47:29,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1345064228, now seen corresponding path program 1 times [2020-04-17 17:47:29,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:47:29,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690130799] [2020-04-17 17:47:29,219 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:47:29,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:47:29,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:47:29,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690130799] [2020-04-17 17:47:29,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:47:29,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 17:47:29,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15600414] [2020-04-17 17:47:29,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 17:47:29,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:47:29,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 17:47:29,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:47:29,347 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 5 states. [2020-04-17 17:47:29,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:47:29,412 INFO L93 Difference]: Finished difference Result 290 states and 786 transitions. [2020-04-17 17:47:29,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 17:47:29,412 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-04-17 17:47:29,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:47:29,416 INFO L225 Difference]: With dead ends: 290 [2020-04-17 17:47:29,416 INFO L226 Difference]: Without dead ends: 242 [2020-04-17 17:47:29,416 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-17 17:47:29,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-04-17 17:47:29,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-04-17 17:47:29,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-04-17 17:47:29,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 670 transitions. [2020-04-17 17:47:29,444 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 670 transitions. Word has length 10 [2020-04-17 17:47:29,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:47:29,445 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 670 transitions. [2020-04-17 17:47:29,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 17:47:29,445 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 670 transitions. [2020-04-17 17:47:29,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 17:47:29,448 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:47:29,448 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:47:29,448 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:47:29,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:47:29,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1654538757, now seen corresponding path program 1 times [2020-04-17 17:47:29,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:47:29,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253661936] [2020-04-17 17:47:29,451 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:47:29,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:47:29,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:47:29,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253661936] [2020-04-17 17:47:29,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:47:29,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 17:47:29,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756557293] [2020-04-17 17:47:29,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 17:47:29,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:47:29,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 17:47:29,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:47:29,533 INFO L87 Difference]: Start difference. First operand 242 states and 670 transitions. Second operand 5 states. [2020-04-17 17:47:29,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:47:29,573 INFO L93 Difference]: Finished difference Result 290 states and 777 transitions. [2020-04-17 17:47:29,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 17:47:29,573 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-04-17 17:47:29,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:47:29,575 INFO L225 Difference]: With dead ends: 290 [2020-04-17 17:47:29,575 INFO L226 Difference]: Without dead ends: 158 [2020-04-17 17:47:29,576 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-17 17:47:29,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-04-17 17:47:29,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-04-17 17:47:29,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-04-17 17:47:29,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 394 transitions. [2020-04-17 17:47:29,582 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 394 transitions. Word has length 11 [2020-04-17 17:47:29,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:47:29,582 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 394 transitions. [2020-04-17 17:47:29,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 17:47:29,582 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 394 transitions. [2020-04-17 17:47:29,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 17:47:29,584 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:47:29,584 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:47:29,584 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:47:29,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:47:29,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1491329578, now seen corresponding path program 1 times [2020-04-17 17:47:29,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:47:29,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629907083] [2020-04-17 17:47:29,585 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:47:29,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:47:29,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:47:29,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629907083] [2020-04-17 17:47:29,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:47:29,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 17:47:29,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382899975] [2020-04-17 17:47:29,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 17:47:29,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:47:29,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 17:47:29,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:47:29,647 INFO L87 Difference]: Start difference. First operand 158 states and 394 transitions. Second operand 5 states. [2020-04-17 17:47:29,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:47:29,695 INFO L93 Difference]: Finished difference Result 188 states and 459 transitions. [2020-04-17 17:47:29,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 17:47:29,695 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-17 17:47:29,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:47:29,696 INFO L225 Difference]: With dead ends: 188 [2020-04-17 17:47:29,697 INFO L226 Difference]: Without dead ends: 80 [2020-04-17 17:47:29,697 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-17 17:47:29,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-04-17 17:47:29,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-04-17 17:47:29,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-04-17 17:47:29,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 176 transitions. [2020-04-17 17:47:29,700 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 176 transitions. Word has length 13 [2020-04-17 17:47:29,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:47:29,701 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 176 transitions. [2020-04-17 17:47:29,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 17:47:29,701 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 176 transitions. [2020-04-17 17:47:29,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 17:47:29,702 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:47:29,702 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:47:29,702 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:47:29,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:47:29,703 INFO L82 PathProgramCache]: Analyzing trace with hash -627503362, now seen corresponding path program 1 times [2020-04-17 17:47:29,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:47:29,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773224889] [2020-04-17 17:47:29,703 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:47:29,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:47:29,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:47:29,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773224889] [2020-04-17 17:47:29,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:47:29,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 17:47:29,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63472619] [2020-04-17 17:47:29,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 17:47:29,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:47:29,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 17:47:29,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 17:47:29,778 INFO L87 Difference]: Start difference. First operand 80 states and 176 transitions. Second operand 4 states. [2020-04-17 17:47:29,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:47:29,808 INFO L93 Difference]: Finished difference Result 91 states and 181 transitions. [2020-04-17 17:47:29,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 17:47:29,808 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-04-17 17:47:29,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:47:29,809 INFO L225 Difference]: With dead ends: 91 [2020-04-17 17:47:29,809 INFO L226 Difference]: Without dead ends: 69 [2020-04-17 17:47:29,810 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 [2020-04-17 17:47:29,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-04-17 17:47:29,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-04-17 17:47:29,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-04-17 17:47:29,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 138 transitions. [2020-04-17 17:47:29,812 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 138 transitions. Word has length 14 [2020-04-17 17:47:29,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:47:29,813 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 138 transitions. [2020-04-17 17:47:29,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 17:47:29,813 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 138 transitions. [2020-04-17 17:47:29,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 17:47:29,814 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:47:29,814 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:47:29,814 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:47:29,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:47:29,814 INFO L82 PathProgramCache]: Analyzing trace with hash 822538733, now seen corresponding path program 1 times [2020-04-17 17:47:29,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:47:29,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311534219] [2020-04-17 17:47:29,815 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:47:29,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:47:29,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:47:29,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311534219] [2020-04-17 17:47:29,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:47:29,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 17:47:29,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837085631] [2020-04-17 17:47:29,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 17:47:29,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:47:29,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 17:47:29,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:47:29,900 INFO L87 Difference]: Start difference. First operand 69 states and 138 transitions. Second operand 5 states. [2020-04-17 17:47:29,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:47:29,952 INFO L93 Difference]: Finished difference Result 65 states and 113 transitions. [2020-04-17 17:47:29,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 17:47:29,953 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-04-17 17:47:29,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:47:29,953 INFO L225 Difference]: With dead ends: 65 [2020-04-17 17:47:29,954 INFO L226 Difference]: Without dead ends: 50 [2020-04-17 17:47:29,954 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 17:47:29,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-04-17 17:47:29,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-04-17 17:47:29,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-04-17 17:47:29,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 83 transitions. [2020-04-17 17:47:29,957 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 83 transitions. Word has length 15 [2020-04-17 17:47:29,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:47:29,957 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 83 transitions. [2020-04-17 17:47:29,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 17:47:29,958 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 83 transitions. [2020-04-17 17:47:29,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-17 17:47:29,959 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:47:29,959 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:47:29,959 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:47:29,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:47:29,959 INFO L82 PathProgramCache]: Analyzing trace with hash -246333940, now seen corresponding path program 1 times [2020-04-17 17:47:29,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:47:29,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987555257] [2020-04-17 17:47:29,960 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:47:29,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:47:30,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:47:30,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987555257] [2020-04-17 17:47:30,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:47:30,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-17 17:47:30,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082059814] [2020-04-17 17:47:30,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 17:47:30,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:47:30,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 17:47:30,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 17:47:30,075 INFO L87 Difference]: Start difference. First operand 50 states and 83 transitions. Second operand 6 states. [2020-04-17 17:47:30,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:47:30,125 INFO L93 Difference]: Finished difference Result 43 states and 67 transitions. [2020-04-17 17:47:30,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 17:47:30,126 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-04-17 17:47:30,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:47:30,127 INFO L225 Difference]: With dead ends: 43 [2020-04-17 17:47:30,127 INFO L226 Difference]: Without dead ends: 37 [2020-04-17 17:47:30,127 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-04-17 17:47:30,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-04-17 17:47:30,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-04-17 17:47:30,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-04-17 17:47:30,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 57 transitions. [2020-04-17 17:47:30,129 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 57 transitions. Word has length 16 [2020-04-17 17:47:30,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:47:30,130 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 57 transitions. [2020-04-17 17:47:30,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 17:47:30,130 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 57 transitions. [2020-04-17 17:47:30,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-17 17:47:30,130 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:47:30,130 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:47:30,131 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:47:30,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:47:30,131 INFO L82 PathProgramCache]: Analyzing trace with hash -570484421, now seen corresponding path program 1 times [2020-04-17 17:47:30,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:47:30,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538243212] [2020-04-17 17:47:30,134 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:47:30,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:47:30,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:47:30,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538243212] [2020-04-17 17:47:30,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:47:30,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 17:47:30,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838518448] [2020-04-17 17:47:30,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 17:47:30,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:47:30,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 17:47:30,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:47:30,204 INFO L87 Difference]: Start difference. First operand 37 states and 57 transitions. Second operand 5 states. [2020-04-17 17:47:30,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:47:30,232 INFO L93 Difference]: Finished difference Result 36 states and 56 transitions. [2020-04-17 17:47:30,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 17:47:30,232 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-04-17 17:47:30,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:47:30,233 INFO L225 Difference]: With dead ends: 36 [2020-04-17 17:47:30,233 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 17:47:30,233 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-17 17:47:30,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 17:47:30,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 17:47:30,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 17:47:30,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 17:47:30,234 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-04-17 17:47:30,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:47:30,234 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 17:47:30,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 17:47:30,234 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 17:47:30,234 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 17:47:30,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 05:47:30 BasicIcfg [2020-04-17 17:47:30,239 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 17:47:30,242 INFO L168 Benchmark]: Toolchain (without parser) took 4770.79 ms. Allocated memory was 145.2 MB in the beginning and 248.0 MB in the end (delta: 102.8 MB). Free memory was 100.0 MB in the beginning and 154.4 MB in the end (delta: -54.4 MB). Peak memory consumption was 48.4 MB. Max. memory is 7.1 GB. [2020-04-17 17:47:30,243 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 145.2 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-04-17 17:47:30,244 INFO L168 Benchmark]: CACSL2BoogieTranslator took 719.36 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 98.0 MB in the beginning and 157.4 MB in the end (delta: -59.4 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-04-17 17:47:30,245 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.74 ms. Allocated memory is still 201.9 MB. Free memory was 157.4 MB in the beginning and 155.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-17 17:47:30,250 INFO L168 Benchmark]: Boogie Preprocessor took 23.61 ms. Allocated memory is still 201.9 MB. Free memory was 155.4 MB in the beginning and 154.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-17 17:47:30,251 INFO L168 Benchmark]: RCFGBuilder took 428.88 ms. Allocated memory is still 201.9 MB. Free memory was 154.1 MB in the beginning and 131.9 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-04-17 17:47:30,252 INFO L168 Benchmark]: TraceAbstraction took 3527.59 ms. Allocated memory was 201.9 MB in the beginning and 248.0 MB in the end (delta: 46.1 MB). Free memory was 131.3 MB in the beginning and 154.4 MB in the end (delta: -23.1 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-04-17 17:47:30,264 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 145.2 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 719.36 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 98.0 MB in the beginning and 157.4 MB in the end (delta: -59.4 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 45.74 ms. Allocated memory is still 201.9 MB. Free memory was 157.4 MB in the beginning and 155.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.61 ms. Allocated memory is still 201.9 MB. Free memory was 155.4 MB in the beginning and 154.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 428.88 ms. Allocated memory is still 201.9 MB. Free memory was 154.1 MB in the beginning and 131.9 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3527.59 ms. Allocated memory was 201.9 MB in the beginning and 248.0 MB in the end (delta: 46.1 MB). Free memory was 131.3 MB in the beginning and 154.4 MB in the end (delta: -23.1 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 79 ProgramPointsBefore, 32 ProgramPointsAfterwards, 71 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 695 VarBasedMoverChecksPositive, 31 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2463 CheckedPairsTotal, 57 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 70 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 182 SDtfs, 193 SDslu, 285 SDs, 0 SdLazy, 137 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 105 ConstructedInterpolants, 0 QuantifiedInterpolants, 4202 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...