/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-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-11 23:44:51,152 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 23:44:51,157 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 23:44:51,199 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 23:44:51,199 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 23:44:51,210 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 23:44:51,212 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 23:44:51,216 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 23:44:51,219 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 23:44:51,222 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 23:44:51,223 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 23:44:51,225 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 23:44:51,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 23:44:51,228 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 23:44:51,231 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 23:44:51,232 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 23:44:51,234 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 23:44:51,235 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 23:44:51,237 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 23:44:51,247 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 23:44:51,249 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 23:44:51,250 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 23:44:51,251 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 23:44:51,252 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 23:44:51,255 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-11 23:44:51,256 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-11 23:44:51,256 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-11 23:44:51,259 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-11 23:44:51,260 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-11 23:44:51,262 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-11 23:44:51,262 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 23:44:51,263 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 23:44:51,264 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 23:44:51,264 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 23:44:51,266 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 23:44:51,266 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 23:44:51,267 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 23:44:51,267 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 23:44:51,267 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 23:44:51,268 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 23:44:51,270 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 23:44:51,271 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-11 23:44:51,316 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 23:44:51,316 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 23:44:51,318 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 23:44:51,319 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 23:44:51,319 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 23:44:51,319 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 23:44:51,319 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 23:44:51,320 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 23:44:51,320 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 23:44:51,320 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 23:44:51,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 23:44:51,321 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 23:44:51,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 23:44:51,322 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 23:44:51,322 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 23:44:51,322 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 23:44:51,323 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 23:44:51,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 23:44:51,323 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 23:44:51,323 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 23:44:51,323 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 23:44:51,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 23:44:51,324 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 23:44:51,324 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-11 23:44:51,324 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 23:44:51,324 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 23:44:51,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 23:44:51,325 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-11 23:44:51,325 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-11 23:44:51,325 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 23:44:51,325 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-11 23:44:51,803 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 23:44:51,821 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 23:44:51,826 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 23:44:51,828 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 23:44:51,828 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 23:44:51,830 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i [2020-09-11 23:44:51,912 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee91867cc/77ac1339879f4091aa1c91dc79212d1f/FLAG5ef8a0da1 [2020-09-11 23:44:52,514 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 23:44:52,515 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i [2020-09-11 23:44:52,533 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee91867cc/77ac1339879f4091aa1c91dc79212d1f/FLAG5ef8a0da1 [2020-09-11 23:44:52,783 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee91867cc/77ac1339879f4091aa1c91dc79212d1f [2020-09-11 23:44:52,795 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 23:44:52,800 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 23:44:52,801 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 23:44:52,801 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 23:44:52,805 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 23:44:52,807 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:44:52" (1/1) ... [2020-09-11 23:44:52,811 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4056ff15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:44:52, skipping insertion in model container [2020-09-11 23:44:52,811 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:44:52" (1/1) ... [2020-09-11 23:44:52,820 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 23:44:52,882 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 23:44:53,409 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 23:44:53,424 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 23:44:53,510 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 23:44:53,590 INFO L208 MainTranslator]: Completed translation [2020-09-11 23:44:53,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:44:53 WrapperNode [2020-09-11 23:44:53,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 23:44:53,592 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 23:44:53,592 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 23:44:53,593 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 23:44:53,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:44:53" (1/1) ... [2020-09-11 23:44:53,623 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:44:53" (1/1) ... [2020-09-11 23:44:53,648 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 23:44:53,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 23:44:53,648 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 23:44:53,648 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 23:44:53,658 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:44:53" (1/1) ... [2020-09-11 23:44:53,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:44:53" (1/1) ... [2020-09-11 23:44:53,663 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:44:53" (1/1) ... [2020-09-11 23:44:53,663 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:44:53" (1/1) ... [2020-09-11 23:44:53,671 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:44:53" (1/1) ... [2020-09-11 23:44:53,678 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:44:53" (1/1) ... [2020-09-11 23:44:53,680 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:44:53" (1/1) ... [2020-09-11 23:44:53,684 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 23:44:53,684 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 23:44:53,685 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 23:44:53,685 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 23:44:53,686 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:44:53" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 23:44:53,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 23:44:53,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-11 23:44:53,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 23:44:53,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 23:44:53,764 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-11 23:44:53,764 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-11 23:44:53,764 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-11 23:44:53,764 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-11 23:44:53,765 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-11 23:44:53,765 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-11 23:44:53,765 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-09-11 23:44:53,765 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-09-11 23:44:53,765 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-11 23:44:53,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 23:44:53,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 23:44:53,768 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-11 23:44:54,234 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 23:44:54,235 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-11 23:44:54,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:44:54 BoogieIcfgContainer [2020-09-11 23:44:54,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 23:44:54,247 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 23:44:54,247 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 23:44:54,251 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 23:44:54,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 11:44:52" (1/3) ... [2020-09-11 23:44:54,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65552e84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:44:54, skipping insertion in model container [2020-09-11 23:44:54,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:44:53" (2/3) ... [2020-09-11 23:44:54,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65552e84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:44:54, skipping insertion in model container [2020-09-11 23:44:54,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:44:54" (3/3) ... [2020-09-11 23:44:54,256 INFO L109 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc.i [2020-09-11 23:44:54,265 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 23:44:54,266 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-11 23:44:54,276 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-11 23:44:54,277 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 23:44:54,309 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:54,310 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:54,310 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:54,310 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:54,311 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:54,311 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:54,312 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:54,312 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:54,312 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:54,312 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:54,313 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:54,313 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:54,313 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:54,314 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:54,314 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:54,314 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:54,315 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:54,315 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:54,315 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:54,316 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:54,316 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:54,316 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:54,316 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:54,317 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:54,321 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:54,322 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:54,322 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:54,322 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:54,330 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:54,330 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:54,330 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:54,331 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:54,334 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:54,335 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:54,335 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:54,335 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:54,339 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:54,340 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:54,340 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:54,340 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:54,363 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-11 23:44:54,387 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 23:44:54,388 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 23:44:54,388 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-11 23:44:54,388 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-11 23:44:54,388 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 23:44:54,388 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 23:44:54,389 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 23:44:54,389 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 23:44:54,406 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 80 transitions, 180 flow [2020-09-11 23:44:54,408 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-09-11 23:44:54,471 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-09-11 23:44:54,472 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 23:44:54,479 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 2/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-09-11 23:44:54,483 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-09-11 23:44:54,507 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-09-11 23:44:54,507 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 23:44:54,508 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 2/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-09-11 23:44:54,510 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1822 [2020-09-11 23:44:54,512 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-11 23:44:55,995 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-09-11 23:44:56,093 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2895 [2020-09-11 23:44:56,093 INFO L214 etLargeBlockEncoding]: Total number of compositions: 62 [2020-09-11 23:44:56,098 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2020-09-11 23:44:56,180 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2020-09-11 23:44:56,183 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2020-09-11 23:44:56,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-11 23:44:56,200 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:44:56,201 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:44:56,202 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:44:56,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:44:56,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1118879254, now seen corresponding path program 1 times [2020-09-11 23:44:56,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:44:56,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558350762] [2020-09-11 23:44:56,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:44:56,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:44:56,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:44:56,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558350762] [2020-09-11 23:44:56,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:44:56,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:44:56,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1705164637] [2020-09-11 23:44:56,442 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:44:56,446 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:44:56,464 INFO L274 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-09-11 23:44:56,464 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:44:56,467 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:44:56,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-11 23:44:56,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:44:56,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-11 23:44:56,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-11 23:44:56,488 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2020-09-11 23:44:56,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:44:56,529 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2020-09-11 23:44:56,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-11 23:44:56,531 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-09-11 23:44:56,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:44:56,562 INFO L225 Difference]: With dead ends: 850 [2020-09-11 23:44:56,562 INFO L226 Difference]: Without dead ends: 706 [2020-09-11 23:44:56,564 INFO L675 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 [2020-09-11 23:44:56,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-09-11 23:44:56,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2020-09-11 23:44:56,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-09-11 23:44:56,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2020-09-11 23:44:56,728 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2020-09-11 23:44:56,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:44:56,729 INFO L479 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2020-09-11 23:44:56,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-11 23:44:56,729 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2020-09-11 23:44:56,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-11 23:44:56,731 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:44:56,732 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:44:56,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 23:44:56,732 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:44:56,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:44:56,733 INFO L82 PathProgramCache]: Analyzing trace with hash -325524913, now seen corresponding path program 1 times [2020-09-11 23:44:56,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:44:56,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488710258] [2020-09-11 23:44:56,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:44:56,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:44:56,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:44:56,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488710258] [2020-09-11 23:44:56,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:44:56,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:44:56,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1581405944] [2020-09-11 23:44:56,964 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:44:56,966 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:44:56,968 INFO L274 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-09-11 23:44:56,968 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:44:56,969 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:44:56,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:44:56,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:44:56,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:44:56,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:44:56,974 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2020-09-11 23:44:57,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:44:57,037 INFO L93 Difference]: Finished difference Result 802 states and 2662 transitions. [2020-09-11 23:44:57,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 23:44:57,038 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-11 23:44:57,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:44:57,044 INFO L225 Difference]: With dead ends: 802 [2020-09-11 23:44:57,045 INFO L226 Difference]: Without dead ends: 658 [2020-09-11 23:44:57,046 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:44:57,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-09-11 23:44:57,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2020-09-11 23:44:57,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2020-09-11 23:44:57,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 2230 transitions. [2020-09-11 23:44:57,077 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 2230 transitions. Word has length 11 [2020-09-11 23:44:57,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:44:57,077 INFO L479 AbstractCegarLoop]: Abstraction has 658 states and 2230 transitions. [2020-09-11 23:44:57,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:44:57,077 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 2230 transitions. [2020-09-11 23:44:57,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-11 23:44:57,080 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:44:57,080 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:44:57,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 23:44:57,080 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:44:57,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:44:57,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1502334909, now seen corresponding path program 1 times [2020-09-11 23:44:57,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:44:57,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299842888] [2020-09-11 23:44:57,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:44:57,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:44:57,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:44:57,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299842888] [2020-09-11 23:44:57,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:44:57,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:44:57,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1655209432] [2020-09-11 23:44:57,177 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:44:57,178 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:44:57,180 INFO L274 McrAutomatonBuilder]: Finished intersection with 14 states and 14 transitions. [2020-09-11 23:44:57,180 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:44:57,191 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:44:57,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:44:57,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:44:57,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:44:57,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:44:57,192 INFO L87 Difference]: Start difference. First operand 658 states and 2230 transitions. Second operand 4 states. [2020-09-11 23:44:57,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:44:57,237 INFO L93 Difference]: Finished difference Result 738 states and 2404 transitions. [2020-09-11 23:44:57,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 23:44:57,237 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-11 23:44:57,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:44:57,243 INFO L225 Difference]: With dead ends: 738 [2020-09-11 23:44:57,243 INFO L226 Difference]: Without dead ends: 618 [2020-09-11 23:44:57,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:44:57,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-09-11 23:44:57,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 618. [2020-09-11 23:44:57,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2020-09-11 23:44:57,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 2058 transitions. [2020-09-11 23:44:57,269 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 2058 transitions. Word has length 12 [2020-09-11 23:44:57,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:44:57,269 INFO L479 AbstractCegarLoop]: Abstraction has 618 states and 2058 transitions. [2020-09-11 23:44:57,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:44:57,269 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 2058 transitions. [2020-09-11 23:44:57,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 23:44:57,271 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:44:57,271 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:44:57,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 23:44:57,272 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:44:57,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:44:57,272 INFO L82 PathProgramCache]: Analyzing trace with hash 672248787, now seen corresponding path program 1 times [2020-09-11 23:44:57,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:44:57,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963873301] [2020-09-11 23:44:57,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:44:57,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:44:57,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:44:57,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963873301] [2020-09-11 23:44:57,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:44:57,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:44:57,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1901632568] [2020-09-11 23:44:57,365 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:44:57,366 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:44:57,370 INFO L274 McrAutomatonBuilder]: Finished intersection with 22 states and 30 transitions. [2020-09-11 23:44:57,370 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:44:57,441 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:44:57,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:44:57,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:44:57,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:44:57,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:44:57,443 INFO L87 Difference]: Start difference. First operand 618 states and 2058 transitions. Second operand 4 states. [2020-09-11 23:44:57,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:44:57,476 INFO L93 Difference]: Finished difference Result 658 states and 2130 transitions. [2020-09-11 23:44:57,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 23:44:57,477 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-11 23:44:57,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:44:57,482 INFO L225 Difference]: With dead ends: 658 [2020-09-11 23:44:57,482 INFO L226 Difference]: Without dead ends: 578 [2020-09-11 23:44:57,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:44:57,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-11 23:44:57,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2020-09-11 23:44:57,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2020-09-11 23:44:57,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 1906 transitions. [2020-09-11 23:44:57,519 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 1906 transitions. Word has length 13 [2020-09-11 23:44:57,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:44:57,520 INFO L479 AbstractCegarLoop]: Abstraction has 578 states and 1906 transitions. [2020-09-11 23:44:57,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:44:57,520 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 1906 transitions. [2020-09-11 23:44:57,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-11 23:44:57,522 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:44:57,522 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:44:57,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 23:44:57,523 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:44:57,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:44:57,523 INFO L82 PathProgramCache]: Analyzing trace with hash -488944074, now seen corresponding path program 1 times [2020-09-11 23:44:57,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:44:57,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565750514] [2020-09-11 23:44:57,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:44:57,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:44:57,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:44:57,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565750514] [2020-09-11 23:44:57,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:44:57,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 23:44:57,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1309008972] [2020-09-11 23:44:57,704 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:44:57,707 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:44:57,711 INFO L274 McrAutomatonBuilder]: Finished intersection with 32 states and 49 transitions. [2020-09-11 23:44:57,711 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:44:57,915 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:44:57,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 23:44:57,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:44:57,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 23:44:57,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:44:57,916 INFO L87 Difference]: Start difference. First operand 578 states and 1906 transitions. Second operand 5 states. [2020-09-11 23:44:57,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:44:57,968 INFO L93 Difference]: Finished difference Result 874 states and 2856 transitions. [2020-09-11 23:44:57,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 23:44:57,969 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-11 23:44:57,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:44:57,973 INFO L225 Difference]: With dead ends: 874 [2020-09-11 23:44:57,973 INFO L226 Difference]: Without dead ends: 482 [2020-09-11 23:44:57,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-11 23:44:57,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2020-09-11 23:44:57,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 482. [2020-09-11 23:44:57,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2020-09-11 23:44:57,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 1564 transitions. [2020-09-11 23:44:57,991 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 1564 transitions. Word has length 14 [2020-09-11 23:44:57,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:44:57,991 INFO L479 AbstractCegarLoop]: Abstraction has 482 states and 1564 transitions. [2020-09-11 23:44:57,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 23:44:57,991 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 1564 transitions. [2020-09-11 23:44:57,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-11 23:44:57,992 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:44:57,993 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:44:57,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-11 23:44:57,993 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:44:57,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:44:57,993 INFO L82 PathProgramCache]: Analyzing trace with hash -669040336, now seen corresponding path program 2 times [2020-09-11 23:44:57,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:44:57,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827981733] [2020-09-11 23:44:57,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:44:58,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:44:58,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:44:58,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827981733] [2020-09-11 23:44:58,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:44:58,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:44:58,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [632502428] [2020-09-11 23:44:58,097 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:44:58,100 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:44:58,102 INFO L274 McrAutomatonBuilder]: Finished intersection with 18 states and 20 transitions. [2020-09-11 23:44:58,102 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:44:58,108 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:44:58,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:44:58,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:44:58,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:44:58,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:44:58,109 INFO L87 Difference]: Start difference. First operand 482 states and 1564 transitions. Second operand 4 states. [2020-09-11 23:44:58,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:44:58,140 INFO L93 Difference]: Finished difference Result 514 states and 1620 transitions. [2020-09-11 23:44:58,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 23:44:58,141 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-11 23:44:58,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:44:58,145 INFO L225 Difference]: With dead ends: 514 [2020-09-11 23:44:58,145 INFO L226 Difference]: Without dead ends: 450 [2020-09-11 23:44:58,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:44:58,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2020-09-11 23:44:58,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 450. [2020-09-11 23:44:58,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2020-09-11 23:44:58,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 1444 transitions. [2020-09-11 23:44:58,161 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 1444 transitions. Word has length 14 [2020-09-11 23:44:58,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:44:58,162 INFO L479 AbstractCegarLoop]: Abstraction has 450 states and 1444 transitions. [2020-09-11 23:44:58,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:44:58,162 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 1444 transitions. [2020-09-11 23:44:58,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 23:44:58,164 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:44:58,164 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:44:58,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-11 23:44:58,164 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:44:58,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:44:58,165 INFO L82 PathProgramCache]: Analyzing trace with hash -453774883, now seen corresponding path program 1 times [2020-09-11 23:44:58,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:44:58,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24496463] [2020-09-11 23:44:58,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:44:58,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:44:58,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:44:58,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24496463] [2020-09-11 23:44:58,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:44:58,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 23:44:58,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2091839438] [2020-09-11 23:44:58,254 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:44:58,256 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:44:58,259 INFO L274 McrAutomatonBuilder]: Finished intersection with 28 states and 39 transitions. [2020-09-11 23:44:58,259 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:44:58,295 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:44:58,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:44:58,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:44:58,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:44:58,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:44:58,297 INFO L87 Difference]: Start difference. First operand 450 states and 1444 transitions. Second operand 4 states. [2020-09-11 23:44:58,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:44:58,336 INFO L93 Difference]: Finished difference Result 658 states and 2016 transitions. [2020-09-11 23:44:58,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 23:44:58,336 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-09-11 23:44:58,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:44:58,340 INFO L225 Difference]: With dead ends: 658 [2020-09-11 23:44:58,340 INFO L226 Difference]: Without dead ends: 482 [2020-09-11 23:44:58,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:44:58,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2020-09-11 23:44:58,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 418. [2020-09-11 23:44:58,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-09-11 23:44:58,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 1276 transitions. [2020-09-11 23:44:58,356 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 1276 transitions. Word has length 15 [2020-09-11 23:44:58,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:44:58,357 INFO L479 AbstractCegarLoop]: Abstraction has 418 states and 1276 transitions. [2020-09-11 23:44:58,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:44:58,357 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 1276 transitions. [2020-09-11 23:44:58,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 23:44:58,358 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:44:58,358 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:44:58,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-11 23:44:58,359 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:44:58,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:44:58,359 INFO L82 PathProgramCache]: Analyzing trace with hash -99110680, now seen corresponding path program 1 times [2020-09-11 23:44:58,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:44:58,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470958663] [2020-09-11 23:44:58,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:44:58,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:44:58,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:44:58,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470958663] [2020-09-11 23:44:58,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:44:58,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 23:44:58,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1117236085] [2020-09-11 23:44:58,414 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:44:58,416 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:44:58,419 INFO L274 McrAutomatonBuilder]: Finished intersection with 26 states and 37 transitions. [2020-09-11 23:44:58,419 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:44:58,421 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:44:58,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:44:58,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:44:58,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:44:58,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:44:58,422 INFO L87 Difference]: Start difference. First operand 418 states and 1276 transitions. Second operand 4 states. [2020-09-11 23:44:58,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:44:58,455 INFO L93 Difference]: Finished difference Result 598 states and 1736 transitions. [2020-09-11 23:44:58,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 23:44:58,456 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-09-11 23:44:58,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:44:58,459 INFO L225 Difference]: With dead ends: 598 [2020-09-11 23:44:58,460 INFO L226 Difference]: Without dead ends: 442 [2020-09-11 23:44:58,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:44:58,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-09-11 23:44:58,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 394. [2020-09-11 23:44:58,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-09-11 23:44:58,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1140 transitions. [2020-09-11 23:44:58,475 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1140 transitions. Word has length 15 [2020-09-11 23:44:58,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:44:58,476 INFO L479 AbstractCegarLoop]: Abstraction has 394 states and 1140 transitions. [2020-09-11 23:44:58,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:44:58,476 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1140 transitions. [2020-09-11 23:44:58,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 23:44:58,477 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:44:58,478 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:44:58,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-11 23:44:58,478 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:44:58,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:44:58,479 INFO L82 PathProgramCache]: Analyzing trace with hash -96752386, now seen corresponding path program 1 times [2020-09-11 23:44:58,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:44:58,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562171835] [2020-09-11 23:44:58,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:44:58,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:44:58,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:44:58,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562171835] [2020-09-11 23:44:58,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:44:58,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 23:44:58,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [487113613] [2020-09-11 23:44:58,552 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:44:58,553 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:44:58,557 INFO L274 McrAutomatonBuilder]: Finished intersection with 32 states and 51 transitions. [2020-09-11 23:44:58,558 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:44:58,680 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:44:58,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 23:44:58,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:44:58,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 23:44:58,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:44:58,681 INFO L87 Difference]: Start difference. First operand 394 states and 1140 transitions. Second operand 5 states. [2020-09-11 23:44:58,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:44:58,723 INFO L93 Difference]: Finished difference Result 542 states and 1518 transitions. [2020-09-11 23:44:58,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 23:44:58,723 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-09-11 23:44:58,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:44:58,725 INFO L225 Difference]: With dead ends: 542 [2020-09-11 23:44:58,725 INFO L226 Difference]: Without dead ends: 254 [2020-09-11 23:44:58,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-11 23:44:58,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-09-11 23:44:58,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2020-09-11 23:44:58,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-09-11 23:44:58,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 691 transitions. [2020-09-11 23:44:58,734 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 691 transitions. Word has length 15 [2020-09-11 23:44:58,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:44:58,734 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 691 transitions. [2020-09-11 23:44:58,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 23:44:58,735 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 691 transitions. [2020-09-11 23:44:58,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 23:44:58,735 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:44:58,736 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:44:58,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-11 23:44:58,736 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:44:58,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:44:58,736 INFO L82 PathProgramCache]: Analyzing trace with hash 807678122, now seen corresponding path program 2 times [2020-09-11 23:44:58,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:44:58,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324663820] [2020-09-11 23:44:58,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:44:58,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:44:58,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:44:58,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324663820] [2020-09-11 23:44:58,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:44:58,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 23:44:58,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [971704836] [2020-09-11 23:44:58,799 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:44:58,801 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:44:58,805 INFO L274 McrAutomatonBuilder]: Finished intersection with 34 states and 55 transitions. [2020-09-11 23:44:58,805 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:44:58,837 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:44:58,859 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:44:58,879 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:44:58,892 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:44:58,902 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:44:58,910 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:44:58,969 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:44:58,983 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:44:58,997 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:44:59,011 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:44:59,015 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [17204#(not (= 4 ~__unbuffered_cnt~0))] [2020-09-11 23:44:59,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 23:44:59,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:44:59,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 23:44:59,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:44:59,017 INFO L87 Difference]: Start difference. First operand 254 states and 691 transitions. Second operand 5 states. [2020-09-11 23:44:59,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:44:59,079 INFO L93 Difference]: Finished difference Result 244 states and 585 transitions. [2020-09-11 23:44:59,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 23:44:59,080 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-09-11 23:44:59,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:44:59,081 INFO L225 Difference]: With dead ends: 244 [2020-09-11 23:44:59,081 INFO L226 Difference]: Without dead ends: 171 [2020-09-11 23:44:59,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-11 23:44:59,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-09-11 23:44:59,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-09-11 23:44:59,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-09-11 23:44:59,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 378 transitions. [2020-09-11 23:44:59,087 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 378 transitions. Word has length 15 [2020-09-11 23:44:59,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:44:59,088 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 378 transitions. [2020-09-11 23:44:59,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 23:44:59,088 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 378 transitions. [2020-09-11 23:44:59,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 23:44:59,089 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:44:59,089 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:44:59,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-11 23:44:59,089 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:44:59,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:44:59,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1331262194, now seen corresponding path program 1 times [2020-09-11 23:44:59,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:44:59,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293235029] [2020-09-11 23:44:59,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:44:59,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:44:59,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:44:59,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293235029] [2020-09-11 23:44:59,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:44:59,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 23:44:59,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [891187232] [2020-09-11 23:44:59,161 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:44:59,163 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:44:59,169 INFO L274 McrAutomatonBuilder]: Finished intersection with 45 states and 77 transitions. [2020-09-11 23:44:59,169 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:44:59,176 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:44:59,239 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:44:59,256 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:44:59,380 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:44:59,389 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:44:59,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-11 23:44:59,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:44:59,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-11 23:44:59,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-11 23:44:59,390 INFO L87 Difference]: Start difference. First operand 171 states and 378 transitions. Second operand 6 states. [2020-09-11 23:44:59,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:44:59,450 INFO L93 Difference]: Finished difference Result 147 states and 307 transitions. [2020-09-11 23:44:59,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 23:44:59,451 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-09-11 23:44:59,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:44:59,452 INFO L225 Difference]: With dead ends: 147 [2020-09-11 23:44:59,453 INFO L226 Difference]: Without dead ends: 107 [2020-09-11 23:44:59,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 18 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-11 23:44:59,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-09-11 23:44:59,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-09-11 23:44:59,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-09-11 23:44:59,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 217 transitions. [2020-09-11 23:44:59,457 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 217 transitions. Word has length 17 [2020-09-11 23:44:59,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:44:59,458 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 217 transitions. [2020-09-11 23:44:59,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-11 23:44:59,458 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 217 transitions. [2020-09-11 23:44:59,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-11 23:44:59,459 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:44:59,459 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:44:59,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-11 23:44:59,459 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:44:59,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:44:59,460 INFO L82 PathProgramCache]: Analyzing trace with hash 461519417, now seen corresponding path program 1 times [2020-09-11 23:44:59,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:44:59,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862035971] [2020-09-11 23:44:59,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:44:59,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:44:59,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:44:59,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862035971] [2020-09-11 23:44:59,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:44:59,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 23:44:59,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1065061971] [2020-09-11 23:44:59,533 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:44:59,535 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:44:59,541 INFO L274 McrAutomatonBuilder]: Finished intersection with 29 states and 36 transitions. [2020-09-11 23:44:59,541 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:44:59,547 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:44:59,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 23:44:59,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:44:59,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 23:44:59,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:44:59,549 INFO L87 Difference]: Start difference. First operand 107 states and 217 transitions. Second operand 5 states. [2020-09-11 23:44:59,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:44:59,588 INFO L93 Difference]: Finished difference Result 121 states and 234 transitions. [2020-09-11 23:44:59,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 23:44:59,588 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-11 23:44:59,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:44:59,589 INFO L225 Difference]: With dead ends: 121 [2020-09-11 23:44:59,589 INFO L226 Difference]: Without dead ends: 105 [2020-09-11 23:44:59,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-11 23:44:59,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-09-11 23:44:59,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2020-09-11 23:44:59,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-11 23:44:59,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 205 transitions. [2020-09-11 23:44:59,595 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 205 transitions. Word has length 19 [2020-09-11 23:44:59,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:44:59,595 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 205 transitions. [2020-09-11 23:44:59,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 23:44:59,595 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 205 transitions. [2020-09-11 23:44:59,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-11 23:44:59,596 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:44:59,596 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:44:59,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-11 23:44:59,597 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:44:59,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:44:59,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1319799301, now seen corresponding path program 2 times [2020-09-11 23:44:59,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:44:59,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725467476] [2020-09-11 23:44:59,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:44:59,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:44:59,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:44:59,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725467476] [2020-09-11 23:44:59,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:44:59,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-11 23:44:59,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [875135464] [2020-09-11 23:44:59,699 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:44:59,701 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:44:59,709 INFO L274 McrAutomatonBuilder]: Finished intersection with 37 states and 51 transitions. [2020-09-11 23:44:59,709 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:44:59,718 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:44:59,744 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [18507#(<= ~__unbuffered_cnt~0 0)] [2020-09-11 23:44:59,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-11 23:44:59,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:44:59,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-11 23:44:59,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-11 23:44:59,746 INFO L87 Difference]: Start difference. First operand 103 states and 205 transitions. Second operand 8 states. [2020-09-11 23:44:59,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:44:59,795 INFO L93 Difference]: Finished difference Result 93 states and 190 transitions. [2020-09-11 23:44:59,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 23:44:59,795 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-09-11 23:44:59,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:44:59,796 INFO L225 Difference]: With dead ends: 93 [2020-09-11 23:44:59,796 INFO L226 Difference]: Without dead ends: 0 [2020-09-11 23:44:59,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-11 23:44:59,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-11 23:44:59,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-11 23:44:59,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-11 23:44:59,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-11 23:44:59,797 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-09-11 23:44:59,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:44:59,798 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-11 23:44:59,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-11 23:44:59,798 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-11 23:44:59,798 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-11 23:44:59,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-11 23:44:59,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 11:44:59 BasicIcfg [2020-09-11 23:44:59,804 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 23:44:59,806 INFO L168 Benchmark]: Toolchain (without parser) took 7009.36 ms. Allocated memory was 136.8 MB in the beginning and 307.8 MB in the end (delta: 170.9 MB). Free memory was 98.3 MB in the beginning and 82.3 MB in the end (delta: 16.0 MB). Peak memory consumption was 186.9 MB. Max. memory is 7.1 GB. [2020-09-11 23:44:59,807 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 136.8 MB. Free memory was 118.4 MB in the beginning and 118.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-11 23:44:59,808 INFO L168 Benchmark]: CACSL2BoogieTranslator took 790.99 ms. Allocated memory was 136.8 MB in the beginning and 199.8 MB in the end (delta: 62.9 MB). Free memory was 97.7 MB in the beginning and 157.0 MB in the end (delta: -59.4 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. [2020-09-11 23:44:59,808 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.64 ms. Allocated memory is still 199.8 MB. Free memory was 157.0 MB in the beginning and 155.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-09-11 23:44:59,809 INFO L168 Benchmark]: Boogie Preprocessor took 36.00 ms. Allocated memory is still 199.8 MB. Free memory was 155.0 MB in the beginning and 152.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-09-11 23:44:59,810 INFO L168 Benchmark]: RCFGBuilder took 559.84 ms. Allocated memory is still 199.8 MB. Free memory was 152.9 MB in the beginning and 128.9 MB in the end (delta: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-09-11 23:44:59,811 INFO L168 Benchmark]: TraceAbstraction took 5557.20 ms. Allocated memory was 199.8 MB in the beginning and 307.8 MB in the end (delta: 108.0 MB). Free memory was 128.9 MB in the beginning and 82.3 MB in the end (delta: 46.7 MB). Peak memory consumption was 154.7 MB. Max. memory is 7.1 GB. [2020-09-11 23:44:59,815 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 136.8 MB. Free memory was 118.4 MB in the beginning and 118.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 790.99 ms. Allocated memory was 136.8 MB in the beginning and 199.8 MB in the end (delta: 62.9 MB). Free memory was 97.7 MB in the beginning and 157.0 MB in the end (delta: -59.4 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 55.64 ms. Allocated memory is still 199.8 MB. Free memory was 157.0 MB in the beginning and 155.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 36.00 ms. Allocated memory is still 199.8 MB. Free memory was 155.0 MB in the beginning and 152.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 559.84 ms. Allocated memory is still 199.8 MB. Free memory was 152.9 MB in the beginning and 128.9 MB in the end (delta: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5557.20 ms. Allocated memory was 199.8 MB in the beginning and 307.8 MB in the end (delta: 108.0 MB). Free memory was 128.9 MB in the beginning and 82.3 MB in the end (delta: 46.7 MB). Peak memory consumption was 154.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 91 ProgramPointsBefore, 39 ProgramPointsAfterwards, 80 TransitionsBefore, 27 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 927 VarBasedMoverChecksPositive, 22 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2895 CheckedPairsTotal, 62 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 5 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.4s, OverallIterations: 13, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 350 SDtfs, 280 SDslu, 573 SDs, 0 SdLazy, 205 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 258 GetRequests, 189 SyntacticMatches, 19 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=850occurred 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: 0.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 114 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 189 NumberOfCodeBlocks, 189 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 176 ConstructedInterpolants, 0 QuantifiedInterpolants, 6980 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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...