/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/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-21 23:07:30,091 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-21 23:07:30,094 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-21 23:07:30,138 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-21 23:07:30,139 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-21 23:07:30,146 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-21 23:07:30,150 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-21 23:07:30,154 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-21 23:07:30,157 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-21 23:07:30,160 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-21 23:07:30,161 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-21 23:07:30,162 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-21 23:07:30,162 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-21 23:07:30,165 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-21 23:07:30,167 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-21 23:07:30,169 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-21 23:07:30,171 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-21 23:07:30,172 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-21 23:07:30,173 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-21 23:07:30,182 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-21 23:07:30,185 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-21 23:07:30,186 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-21 23:07:30,187 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-21 23:07:30,188 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-21 23:07:30,204 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-21 23:07:30,205 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-21 23:07:30,205 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-21 23:07:30,206 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-21 23:07:30,209 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-21 23:07:30,210 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-21 23:07:30,211 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-21 23:07:30,211 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-21 23:07:30,212 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-21 23:07:30,213 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-21 23:07:30,214 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-21 23:07:30,214 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-21 23:07:30,218 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-21 23:07:30,218 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-21 23:07:30,218 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-21 23:07:30,223 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-21 23:07:30,223 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-21 23:07:30,224 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-10-21 23:07:30,265 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-21 23:07:30,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-21 23:07:30,268 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-21 23:07:30,268 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-21 23:07:30,268 INFO L138 SettingsManager]: * Use SBE=true [2020-10-21 23:07:30,269 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-21 23:07:30,270 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-21 23:07:30,270 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-21 23:07:30,270 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-21 23:07:30,271 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-21 23:07:30,272 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-21 23:07:30,272 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-21 23:07:30,272 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-21 23:07:30,272 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-21 23:07:30,272 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-21 23:07:30,273 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-21 23:07:30,273 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-21 23:07:30,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-21 23:07:30,274 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-21 23:07:30,274 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-21 23:07:30,274 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-21 23:07:30,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-21 23:07:30,274 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-21 23:07:30,275 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-21 23:07:30,275 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-21 23:07:30,275 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-21 23:07:30,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-21 23:07:30,276 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-21 23:07:30,276 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-21 23:07:30,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-21 23:07:30,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-21 23:07:30,653 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-21 23:07:30,655 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-21 23:07:30,655 INFO L275 PluginConnector]: CDTParser initialized [2020-10-21 23:07:30,656 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i [2020-10-21 23:07:30,728 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f7452d52/e0c4d92072064021aa0b2da3b974e80e/FLAGeb872b5b4 [2020-10-21 23:07:31,288 INFO L306 CDTParser]: Found 1 translation units. [2020-10-21 23:07:31,288 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i [2020-10-21 23:07:31,306 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f7452d52/e0c4d92072064021aa0b2da3b974e80e/FLAGeb872b5b4 [2020-10-21 23:07:31,576 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f7452d52/e0c4d92072064021aa0b2da3b974e80e [2020-10-21 23:07:31,584 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-21 23:07:31,592 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-21 23:07:31,594 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-21 23:07:31,594 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-21 23:07:31,598 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-21 23:07:31,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 11:07:31" (1/1) ... [2020-10-21 23:07:31,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f6d4935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:07:31, skipping insertion in model container [2020-10-21 23:07:31,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 11:07:31" (1/1) ... [2020-10-21 23:07:31,612 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-21 23:07:31,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-21 23:07:32,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 23:07:32,209 INFO L203 MainTranslator]: Completed pre-run [2020-10-21 23:07:32,253 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 23:07:32,329 INFO L208 MainTranslator]: Completed translation [2020-10-21 23:07:32,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:07:32 WrapperNode [2020-10-21 23:07:32,330 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-21 23:07:32,330 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-21 23:07:32,331 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-21 23:07:32,331 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-21 23:07:32,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:07:32" (1/1) ... [2020-10-21 23:07:32,357 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:07:32" (1/1) ... [2020-10-21 23:07:32,385 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-21 23:07:32,385 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-21 23:07:32,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-21 23:07:32,385 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-21 23:07:32,393 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:07:32" (1/1) ... [2020-10-21 23:07:32,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:07:32" (1/1) ... [2020-10-21 23:07:32,396 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:07:32" (1/1) ... [2020-10-21 23:07:32,397 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:07:32" (1/1) ... [2020-10-21 23:07:32,403 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:07:32" (1/1) ... [2020-10-21 23:07:32,406 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:07:32" (1/1) ... [2020-10-21 23:07:32,408 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:07:32" (1/1) ... [2020-10-21 23:07:32,411 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-21 23:07:32,412 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-21 23:07:32,412 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-21 23:07:32,412 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-21 23:07:32,413 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:07:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-21 23:07:32,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-21 23:07:32,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-21 23:07:32,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-21 23:07:32,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-21 23:07:32,492 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-21 23:07:32,492 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-21 23:07:32,493 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-21 23:07:32,494 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-21 23:07:32,494 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-21 23:07:32,495 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-21 23:07:32,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-21 23:07:32,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-21 23:07:32,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-21 23:07:32,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-21 23:07:32,500 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-21 23:07:32,909 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-21 23:07:32,910 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-21 23:07:32,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 11:07:32 BoogieIcfgContainer [2020-10-21 23:07:32,913 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-21 23:07:32,914 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-21 23:07:32,914 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-21 23:07:32,918 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-21 23:07:32,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 11:07:31" (1/3) ... [2020-10-21 23:07:32,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74839e6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 11:07:32, skipping insertion in model container [2020-10-21 23:07:32,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:07:32" (2/3) ... [2020-10-21 23:07:32,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74839e6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 11:07:32, skipping insertion in model container [2020-10-21 23:07:32,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 11:07:32" (3/3) ... [2020-10-21 23:07:32,922 INFO L111 eAbstractionObserver]: Analyzing ICFG safe023_tso.opt.i [2020-10-21 23:07:32,934 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-21 23:07:32,934 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-21 23:07:32,942 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-21 23:07:32,946 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-21 23:07:32,977 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:07:32,978 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:07:32,978 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:07:32,978 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:07:32,979 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:07:32,979 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:07:32,979 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:07:32,980 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:07:32,980 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:07:32,980 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:07:32,980 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:07:32,981 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:07:32,981 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:07:32,981 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:07:32,982 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:07:32,982 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:07:32,982 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:07:32,982 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:07:32,986 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:07:32,987 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:07:32,987 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:07:32,987 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:07:32,993 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:07:32,993 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:07:32,993 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:07:32,994 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:07:32,996 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:07:32,996 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:07:32,996 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:07:32,997 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:07:32,998 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-21 23:07:33,012 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-21 23:07:33,033 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 23:07:33,033 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 23:07:33,033 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-21 23:07:33,033 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 23:07:33,034 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 23:07:33,034 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 23:07:33,034 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 23:07:33,034 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 23:07:33,046 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-21 23:07:33,047 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-10-21 23:07:33,049 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-10-21 23:07:33,050 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-10-21 23:07:33,094 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-10-21 23:07:33,095 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-21 23:07:33,101 INFO L80 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-10-21 23:07:33,104 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-10-21 23:07:34,820 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-10-21 23:07:34,988 INFO L131 LiptonReduction]: Checked pairs total: 2926 [2020-10-21 23:07:34,988 INFO L133 LiptonReduction]: Total number of compositions: 72 [2020-10-21 23:07:34,996 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-21 23:07:35,024 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-21 23:07:35,027 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-21 23:07:35,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-21 23:07:35,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:07:35,037 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:07:35,037 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:07:35,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:07:35,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1098074663, now seen corresponding path program 1 times [2020-10-21 23:07:35,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:07:35,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280266345] [2020-10-21 23:07:35,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:07:35,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:07:35,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:07:35,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280266345] [2020-10-21 23:07:35,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:07:35,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-21 23:07:35,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693421515] [2020-10-21 23:07:35,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 23:07:35,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:07:35,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 23:07:35,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:07:35,383 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-21 23:07:35,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:07:35,451 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-21 23:07:35,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 23:07:35,453 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-21 23:07:35,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:07:35,479 INFO L225 Difference]: With dead ends: 282 [2020-10-21 23:07:35,479 INFO L226 Difference]: Without dead ends: 218 [2020-10-21 23:07:35,480 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:07:35,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-21 23:07:35,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-21 23:07:35,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-21 23:07:35,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-21 23:07:35,592 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-21 23:07:35,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:07:35,594 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-21 23:07:35,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 23:07:35,594 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-21 23:07:35,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 23:07:35,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:07:35,596 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:07:35,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-21 23:07:35,597 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:07:35,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:07:35,597 INFO L82 PathProgramCache]: Analyzing trace with hash 319392730, now seen corresponding path program 1 times [2020-10-21 23:07:35,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:07:35,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424893232] [2020-10-21 23:07:35,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:07:35,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:07:35,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:07:35,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424893232] [2020-10-21 23:07:35,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:07:35,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 23:07:35,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764871025] [2020-10-21 23:07:35,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 23:07:35,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:07:35,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 23:07:35,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-21 23:07:35,667 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-10-21 23:07:35,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:07:35,692 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-10-21 23:07:35,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-21 23:07:35,693 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-21 23:07:35,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:07:35,694 INFO L225 Difference]: With dead ends: 242 [2020-10-21 23:07:35,695 INFO L226 Difference]: Without dead ends: 146 [2020-10-21 23:07:35,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:07:35,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-21 23:07:35,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-10-21 23:07:35,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-21 23:07:35,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-10-21 23:07:35,707 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 9 [2020-10-21 23:07:35,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:07:35,708 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-10-21 23:07:35,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 23:07:35,708 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-10-21 23:07:35,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-21 23:07:35,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:07:35,710 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:07:35,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-21 23:07:35,710 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:07:35,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:07:35,711 INFO L82 PathProgramCache]: Analyzing trace with hash 266199867, now seen corresponding path program 1 times [2020-10-21 23:07:35,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:07:35,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761698412] [2020-10-21 23:07:35,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:07:35,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:07:35,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:07:35,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761698412] [2020-10-21 23:07:35,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:07:35,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-21 23:07:35,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88426495] [2020-10-21 23:07:35,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 23:07:35,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:07:35,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 23:07:35,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:07:35,775 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-10-21 23:07:35,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:07:35,782 INFO L93 Difference]: Finished difference Result 134 states and 324 transitions. [2020-10-21 23:07:35,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 23:07:35,783 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-21 23:07:35,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:07:35,785 INFO L225 Difference]: With dead ends: 134 [2020-10-21 23:07:35,785 INFO L226 Difference]: Without dead ends: 134 [2020-10-21 23:07:35,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:07:35,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-21 23:07:35,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-10-21 23:07:35,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-21 23:07:35,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 324 transitions. [2020-10-21 23:07:35,796 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 324 transitions. Word has length 11 [2020-10-21 23:07:35,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:07:35,796 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 324 transitions. [2020-10-21 23:07:35,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 23:07:35,796 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 324 transitions. [2020-10-21 23:07:35,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 23:07:35,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:07:35,798 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:07:35,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-21 23:07:35,798 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:07:35,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:07:35,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1054826072, now seen corresponding path program 1 times [2020-10-21 23:07:35,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:07:35,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886982344] [2020-10-21 23:07:35,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:07:35,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:07:35,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:07:35,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886982344] [2020-10-21 23:07:35,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:07:35,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 23:07:35,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506845527] [2020-10-21 23:07:35,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 23:07:35,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:07:35,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 23:07:35,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:07:35,844 INFO L87 Difference]: Start difference. First operand 134 states and 324 transitions. Second operand 3 states. [2020-10-21 23:07:35,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:07:35,860 INFO L93 Difference]: Finished difference Result 206 states and 495 transitions. [2020-10-21 23:07:35,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 23:07:35,860 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-21 23:07:35,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:07:35,862 INFO L225 Difference]: With dead ends: 206 [2020-10-21 23:07:35,862 INFO L226 Difference]: Without dead ends: 110 [2020-10-21 23:07:35,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:07:35,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-21 23:07:35,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-10-21 23:07:35,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-21 23:07:35,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 255 transitions. [2020-10-21 23:07:35,871 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 255 transitions. Word has length 13 [2020-10-21 23:07:35,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:07:35,872 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 255 transitions. [2020-10-21 23:07:35,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 23:07:35,872 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 255 transitions. [2020-10-21 23:07:35,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 23:07:35,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:07:35,873 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:07:35,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-21 23:07:35,874 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:07:35,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:07:35,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1395741464, now seen corresponding path program 2 times [2020-10-21 23:07:35,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:07:35,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576638445] [2020-10-21 23:07:35,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:07:35,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:07:35,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:07:35,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576638445] [2020-10-21 23:07:35,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:07:35,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:07:35,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303729140] [2020-10-21 23:07:35,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 23:07:35,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:07:35,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 23:07:35,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-21 23:07:35,939 INFO L87 Difference]: Start difference. First operand 110 states and 255 transitions. Second operand 4 states. [2020-10-21 23:07:35,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:07:35,964 INFO L93 Difference]: Finished difference Result 158 states and 361 transitions. [2020-10-21 23:07:35,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-21 23:07:35,965 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-21 23:07:35,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:07:35,966 INFO L225 Difference]: With dead ends: 158 [2020-10-21 23:07:35,966 INFO L226 Difference]: Without dead ends: 86 [2020-10-21 23:07:35,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:07:35,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-21 23:07:35,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-10-21 23:07:35,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-21 23:07:35,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 186 transitions. [2020-10-21 23:07:35,973 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 186 transitions. Word has length 13 [2020-10-21 23:07:35,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:07:35,973 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 186 transitions. [2020-10-21 23:07:35,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 23:07:35,973 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 186 transitions. [2020-10-21 23:07:35,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 23:07:35,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:07:35,975 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:07:35,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-21 23:07:35,975 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:07:35,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:07:35,976 INFO L82 PathProgramCache]: Analyzing trace with hash -698343546, now seen corresponding path program 3 times [2020-10-21 23:07:35,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:07:35,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565947673] [2020-10-21 23:07:35,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:07:36,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:07:36,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:07:36,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565947673] [2020-10-21 23:07:36,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:07:36,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 23:07:36,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626460211] [2020-10-21 23:07:36,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 23:07:36,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:07:36,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 23:07:36,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-21 23:07:36,055 INFO L87 Difference]: Start difference. First operand 86 states and 186 transitions. Second operand 4 states. [2020-10-21 23:07:36,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:07:36,087 INFO L93 Difference]: Finished difference Result 99 states and 199 transitions. [2020-10-21 23:07:36,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-21 23:07:36,088 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-21 23:07:36,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:07:36,089 INFO L225 Difference]: With dead ends: 99 [2020-10-21 23:07:36,089 INFO L226 Difference]: Without dead ends: 77 [2020-10-21 23:07:36,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:07:36,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-21 23:07:36,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-10-21 23:07:36,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-21 23:07:36,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 156 transitions. [2020-10-21 23:07:36,096 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 156 transitions. Word has length 13 [2020-10-21 23:07:36,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:07:36,096 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 156 transitions. [2020-10-21 23:07:36,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 23:07:36,096 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 156 transitions. [2020-10-21 23:07:36,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-21 23:07:36,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:07:36,098 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:07:36,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-21 23:07:36,098 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:07:36,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:07:36,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1795509398, now seen corresponding path program 1 times [2020-10-21 23:07:36,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:07:36,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673483899] [2020-10-21 23:07:36,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:07:36,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:07:36,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:07:36,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673483899] [2020-10-21 23:07:36,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:07:36,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:07:36,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711516003] [2020-10-21 23:07:36,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:07:36,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:07:36,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:07:36,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:07:36,189 INFO L87 Difference]: Start difference. First operand 77 states and 156 transitions. Second operand 5 states. [2020-10-21 23:07:36,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:07:36,230 INFO L93 Difference]: Finished difference Result 78 states and 146 transitions. [2020-10-21 23:07:36,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:07:36,231 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-21 23:07:36,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:07:36,232 INFO L225 Difference]: With dead ends: 78 [2020-10-21 23:07:36,232 INFO L226 Difference]: Without dead ends: 63 [2020-10-21 23:07:36,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-21 23:07:36,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-21 23:07:36,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-10-21 23:07:36,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-21 23:07:36,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 116 transitions. [2020-10-21 23:07:36,236 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 116 transitions. Word has length 14 [2020-10-21 23:07:36,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:07:36,237 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 116 transitions. [2020-10-21 23:07:36,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:07:36,237 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 116 transitions. [2020-10-21 23:07:36,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-21 23:07:36,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:07:36,238 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:07:36,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-21 23:07:36,239 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:07:36,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:07:36,239 INFO L82 PathProgramCache]: Analyzing trace with hash 213970275, now seen corresponding path program 1 times [2020-10-21 23:07:36,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:07:36,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944324795] [2020-10-21 23:07:36,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:07:36,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:07:36,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:07:36,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944324795] [2020-10-21 23:07:36,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:07:36,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-21 23:07:36,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004028428] [2020-10-21 23:07:36,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-21 23:07:36,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:07:36,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-21 23:07:36,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-21 23:07:36,309 INFO L87 Difference]: Start difference. First operand 63 states and 116 transitions. Second operand 6 states. [2020-10-21 23:07:36,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:07:36,362 INFO L93 Difference]: Finished difference Result 60 states and 108 transitions. [2020-10-21 23:07:36,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-21 23:07:36,362 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-21 23:07:36,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:07:36,363 INFO L225 Difference]: With dead ends: 60 [2020-10-21 23:07:36,363 INFO L226 Difference]: Without dead ends: 54 [2020-10-21 23:07:36,363 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:07:36,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-21 23:07:36,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-21 23:07:36,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-21 23:07:36,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2020-10-21 23:07:36,367 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 15 [2020-10-21 23:07:36,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:07:36,367 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2020-10-21 23:07:36,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-21 23:07:36,368 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2020-10-21 23:07:36,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-21 23:07:36,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:07:36,369 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:07:36,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-21 23:07:36,369 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:07:36,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:07:36,370 INFO L82 PathProgramCache]: Analyzing trace with hash -534648938, now seen corresponding path program 1 times [2020-10-21 23:07:36,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:07:36,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824764648] [2020-10-21 23:07:36,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:07:36,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:07:36,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:07:36,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824764648] [2020-10-21 23:07:36,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:07:36,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:07:36,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187064279] [2020-10-21 23:07:36,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 23:07:36,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:07:36,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 23:07:36,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-21 23:07:36,407 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand 4 states. [2020-10-21 23:07:36,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:07:36,421 INFO L93 Difference]: Finished difference Result 53 states and 97 transitions. [2020-10-21 23:07:36,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-21 23:07:36,421 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-21 23:07:36,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:07:36,422 INFO L225 Difference]: With dead ends: 53 [2020-10-21 23:07:36,422 INFO L226 Difference]: Without dead ends: 0 [2020-10-21 23:07:36,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:07:36,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-21 23:07:36,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-21 23:07:36,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-21 23:07:36,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-21 23:07:36,423 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-21 23:07:36,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:07:36,424 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-21 23:07:36,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 23:07:36,424 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-21 23:07:36,424 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-21 23:07:36,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-21 23:07:36,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 11:07:36 BasicIcfg [2020-10-21 23:07:36,428 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-21 23:07:36,430 INFO L168 Benchmark]: Toolchain (without parser) took 4844.23 ms. Allocated memory was 140.5 MB in the beginning and 248.0 MB in the end (delta: 107.5 MB). Free memory was 100.7 MB in the beginning and 114.3 MB in the end (delta: -13.6 MB). Peak memory consumption was 93.9 MB. Max. memory is 7.1 GB. [2020-10-21 23:07:36,431 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-21 23:07:36,432 INFO L168 Benchmark]: CACSL2BoogieTranslator took 736.03 ms. Allocated memory was 140.5 MB in the beginning and 202.4 MB in the end (delta: 61.9 MB). Free memory was 99.7 MB in the beginning and 156.6 MB in the end (delta: -56.9 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-10-21 23:07:36,433 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.47 ms. Allocated memory is still 202.4 MB. Free memory was 156.6 MB in the beginning and 154.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-10-21 23:07:36,434 INFO L168 Benchmark]: Boogie Preprocessor took 26.57 ms. Allocated memory is still 202.4 MB. Free memory was 154.5 MB in the beginning and 153.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-21 23:07:36,434 INFO L168 Benchmark]: RCFGBuilder took 500.83 ms. Allocated memory is still 202.4 MB. Free memory was 152.5 MB in the beginning and 128.7 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2020-10-21 23:07:36,435 INFO L168 Benchmark]: TraceAbstraction took 3513.96 ms. Allocated memory was 202.4 MB in the beginning and 248.0 MB in the end (delta: 45.6 MB). Free memory was 128.7 MB in the beginning and 114.3 MB in the end (delta: 14.4 MB). Peak memory consumption was 60.0 MB. Max. memory is 7.1 GB. [2020-10-21 23:07:36,440 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 736.03 ms. Allocated memory was 140.5 MB in the beginning and 202.4 MB in the end (delta: 61.9 MB). Free memory was 99.7 MB in the beginning and 156.6 MB in the end (delta: -56.9 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 54.47 ms. Allocated memory is still 202.4 MB. Free memory was 156.6 MB in the beginning and 154.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.57 ms. Allocated memory is still 202.4 MB. Free memory was 154.5 MB in the beginning and 153.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 500.83 ms. Allocated memory is still 202.4 MB. Free memory was 152.5 MB in the beginning and 128.7 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3513.96 ms. Allocated memory was 202.4 MB in the beginning and 248.0 MB in the end (delta: 45.6 MB). Free memory was 128.7 MB in the beginning and 114.3 MB in the end (delta: 14.4 MB). Peak memory consumption was 60.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 775 VarBasedMoverChecksPositive, 28 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 57 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.9s, 86 PlacesBefore, 31 PlacesAfterwards, 79 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 72 TotalNumberOfCompositions, 2926 MoverChecksTotal - PositiveResult [Line: 17]: 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, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.3s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 173 SDtfs, 134 SDslu, 184 SDs, 0 SdLazy, 113 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 3386 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...