/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 12:09:11,896 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 12:09:11,899 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 12:09:11,922 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 12:09:11,922 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 12:09:11,923 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 12:09:11,924 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 12:09:11,926 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 12:09:11,928 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 12:09:11,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 12:09:11,929 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 12:09:11,930 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 12:09:11,931 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 12:09:11,932 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 12:09:11,933 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 12:09:11,934 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 12:09:11,935 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 12:09:11,935 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 12:09:11,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 12:09:11,939 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 12:09:11,940 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 12:09:11,941 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 12:09:11,943 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 12:09:11,943 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 12:09:11,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 12:09:11,946 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 12:09:11,946 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 12:09:11,947 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 12:09:11,948 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 12:09:11,948 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 12:09:11,949 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 12:09:11,949 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 12:09:11,950 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 12:09:11,951 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 12:09:11,952 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 12:09:11,952 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 12:09:11,953 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 12:09:11,953 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 12:09:11,953 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 12:09:11,954 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 12:09:11,955 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 12:09:11,955 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.epf [2020-10-16 12:09:11,986 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 12:09:11,987 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 12:09:11,991 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 12:09:11,991 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 12:09:11,991 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 12:09:11,992 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 12:09:11,992 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 12:09:11,992 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 12:09:11,992 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 12:09:11,992 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 12:09:11,993 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 12:09:11,993 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 12:09:11,996 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 12:09:11,996 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 12:09:11,997 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 12:09:11,997 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 12:09:11,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 12:09:11,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 12:09:11,997 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 12:09:11,998 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 12:09:11,998 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 12:09:12,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 12:09:12,000 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 12:09:12,000 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 12:09:12,001 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 12:09:12,001 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 12:09:12,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 12:09:12,001 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 12:09:12,001 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 12:09:12,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 12:09:12,313 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 12:09:12,316 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 12:09:12,317 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 12:09:12,318 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 12:09:12,318 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i [2020-10-16 12:09:12,381 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3191ec38a/66d66ed3daea4482b19cf4051088510c/FLAGb198b1118 [2020-10-16 12:09:12,847 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 12:09:12,848 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i [2020-10-16 12:09:12,874 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3191ec38a/66d66ed3daea4482b19cf4051088510c/FLAGb198b1118 [2020-10-16 12:09:13,152 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3191ec38a/66d66ed3daea4482b19cf4051088510c [2020-10-16 12:09:13,161 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 12:09:13,163 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 12:09:13,164 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 12:09:13,164 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 12:09:13,167 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 12:09:13,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:09:13" (1/1) ... [2020-10-16 12:09:13,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73e6a114 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:13, skipping insertion in model container [2020-10-16 12:09:13,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:09:13" (1/1) ... [2020-10-16 12:09:13,179 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 12:09:13,237 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 12:09:13,671 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:09:13,685 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 12:09:13,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:09:13,814 INFO L208 MainTranslator]: Completed translation [2020-10-16 12:09:13,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:13 WrapperNode [2020-10-16 12:09:13,815 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 12:09:13,816 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 12:09:13,816 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 12:09:13,816 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 12:09:13,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:13" (1/1) ... [2020-10-16 12:09:13,840 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:13" (1/1) ... [2020-10-16 12:09:13,863 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 12:09:13,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 12:09:13,864 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 12:09:13,864 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 12:09:13,871 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:13" (1/1) ... [2020-10-16 12:09:13,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:13" (1/1) ... [2020-10-16 12:09:13,874 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:13" (1/1) ... [2020-10-16 12:09:13,874 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:13" (1/1) ... [2020-10-16 12:09:13,881 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:13" (1/1) ... [2020-10-16 12:09:13,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:13" (1/1) ... [2020-10-16 12:09:13,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:13" (1/1) ... [2020-10-16 12:09:13,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 12:09:13,888 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 12:09:13,888 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 12:09:13,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 12:09:13,889 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:13" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 12:09:13,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 12:09:13,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 12:09:13,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 12:09:13,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 12:09:13,948 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 12:09:13,949 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 12:09:13,949 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 12:09:13,949 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 12:09:13,949 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 12:09:13,949 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 12:09:13,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 12:09:13,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 12:09:13,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 12:09:13,951 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 12:09:14,268 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 12:09:14,268 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 12:09:14,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:09:14 BoogieIcfgContainer [2020-10-16 12:09:14,271 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 12:09:14,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 12:09:14,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 12:09:14,276 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 12:09:14,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 12:09:13" (1/3) ... [2020-10-16 12:09:14,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28077add and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:09:14, skipping insertion in model container [2020-10-16 12:09:14,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:13" (2/3) ... [2020-10-16 12:09:14,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28077add and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:09:14, skipping insertion in model container [2020-10-16 12:09:14,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:09:14" (3/3) ... [2020-10-16 12:09:14,280 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_pso.opt.i [2020-10-16 12:09:14,291 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 12:09:14,291 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 12:09:14,298 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 12:09:14,299 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 12:09:14,339 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:14,339 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:14,339 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:14,340 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:14,340 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:14,341 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:14,341 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:14,341 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:14,342 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:14,342 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:14,342 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:14,343 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:14,343 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:14,343 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:14,344 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:14,344 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:14,344 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:14,345 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:14,348 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:14,349 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:14,349 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:14,350 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:14,356 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:14,356 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:14,356 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:14,357 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:14,359 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:14,360 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:14,360 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:14,360 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:14,362 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 12:09:14,376 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 12:09:14,396 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:09:14,396 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:09:14,397 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:09:14,397 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 12:09:14,397 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:09:14,397 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:09:14,398 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:09:14,398 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:09:14,411 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:09:14,412 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-10-16 12:09:14,414 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 69 transitions, 153 flow [2020-10-16 12:09:14,416 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-16 12:09:14,462 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-16 12:09:14,462 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 12:09:14,468 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 12:09:14,471 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-16 12:09:15,829 INFO L132 LiptonReduction]: Checked pairs total: 2962 [2020-10-16 12:09:15,829 INFO L134 LiptonReduction]: Total number of compositions: 59 [2020-10-16 12:09:15,836 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-16 12:09:15,862 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-16 12:09:15,864 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-16 12:09:15,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 12:09:15,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:09:15,873 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:09:15,873 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:09:15,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:09:15,878 INFO L82 PathProgramCache]: Analyzing trace with hash -2122060928, now seen corresponding path program 1 times [2020-10-16 12:09:15,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:09:15,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812661322] [2020-10-16 12:09:15,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:09:16,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:09:16,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:09:16,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812661322] [2020-10-16 12:09:16,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:09:16,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 12:09:16,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996963669] [2020-10-16 12:09:16,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:09:16,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:09:16,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:09:16,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:09:16,129 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-16 12:09:16,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:09:16,199 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-16 12:09:16,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:09:16,202 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-16 12:09:16,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:09:16,217 INFO L225 Difference]: With dead ends: 282 [2020-10-16 12:09:16,217 INFO L226 Difference]: Without dead ends: 218 [2020-10-16 12:09:16,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:09:16,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-16 12:09:16,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-16 12:09:16,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-16 12:09:16,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-16 12:09:16,281 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-16 12:09:16,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:09:16,283 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-16 12:09:16,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:09:16,283 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-16 12:09:16,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 12:09:16,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:09:16,285 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:09:16,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 12:09:16,285 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:09:16,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:09:16,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1372085576, now seen corresponding path program 1 times [2020-10-16 12:09:16,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:09:16,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997692846] [2020-10-16 12:09:16,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:09:16,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:09:16,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:09:16,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997692846] [2020-10-16 12:09:16,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:09:16,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:09:16,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086754382] [2020-10-16 12:09:16,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:09:16,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:09:16,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:09:16,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:09:16,363 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 3 states. [2020-10-16 12:09:16,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:09:16,379 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-10-16 12:09:16,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:09:16,380 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-16 12:09:16,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:09:16,383 INFO L225 Difference]: With dead ends: 202 [2020-10-16 12:09:16,383 INFO L226 Difference]: Without dead ends: 202 [2020-10-16 12:09:16,384 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:09:16,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-16 12:09:16,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-16 12:09:16,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-16 12:09:16,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-10-16 12:09:16,405 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-10-16 12:09:16,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:09:16,405 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-10-16 12:09:16,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:09:16,406 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-10-16 12:09:16,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 12:09:16,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:09:16,407 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:09:16,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 12:09:16,408 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:09:16,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:09:16,408 INFO L82 PathProgramCache]: Analyzing trace with hash 365373016, now seen corresponding path program 1 times [2020-10-16 12:09:16,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:09:16,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471474125] [2020-10-16 12:09:16,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:09:16,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:09:16,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:09:16,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471474125] [2020-10-16 12:09:16,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:09:16,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 12:09:16,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392144194] [2020-10-16 12:09:16,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:09:16,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:09:16,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:09:16,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:09:16,461 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-10-16 12:09:16,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:09:16,472 INFO L93 Difference]: Finished difference Result 198 states and 530 transitions. [2020-10-16 12:09:16,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:09:16,473 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-16 12:09:16,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:09:16,475 INFO L225 Difference]: With dead ends: 198 [2020-10-16 12:09:16,476 INFO L226 Difference]: Without dead ends: 198 [2020-10-16 12:09:16,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:09:16,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-16 12:09:16,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-10-16 12:09:16,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-10-16 12:09:16,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 530 transitions. [2020-10-16 12:09:16,493 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 530 transitions. Word has length 10 [2020-10-16 12:09:16,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:09:16,494 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 530 transitions. [2020-10-16 12:09:16,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:09:16,494 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 530 transitions. [2020-10-16 12:09:16,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 12:09:16,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:09:16,496 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:09:16,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 12:09:16,496 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:09:16,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:09:16,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1571968161, now seen corresponding path program 1 times [2020-10-16 12:09:16,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:09:16,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099346748] [2020-10-16 12:09:16,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:09:16,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:09:16,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:09:16,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099346748] [2020-10-16 12:09:16,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:09:16,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 12:09:16,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873235281] [2020-10-16 12:09:16,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:09:16,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:09:16,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:09:16,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:09:16,557 INFO L87 Difference]: Start difference. First operand 198 states and 530 transitions. Second operand 3 states. [2020-10-16 12:09:16,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:09:16,563 INFO L93 Difference]: Finished difference Result 192 states and 511 transitions. [2020-10-16 12:09:16,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:09:16,563 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-16 12:09:16,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:09:16,565 INFO L225 Difference]: With dead ends: 192 [2020-10-16 12:09:16,565 INFO L226 Difference]: Without dead ends: 192 [2020-10-16 12:09:16,566 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:09:16,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-16 12:09:16,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2020-10-16 12:09:16,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-16 12:09:16,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 511 transitions. [2020-10-16 12:09:16,578 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 511 transitions. Word has length 11 [2020-10-16 12:09:16,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:09:16,578 INFO L481 AbstractCegarLoop]: Abstraction has 192 states and 511 transitions. [2020-10-16 12:09:16,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:09:16,579 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 511 transitions. [2020-10-16 12:09:16,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:09:16,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:09:16,581 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:09:16,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 12:09:16,581 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:09:16,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:09:16,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1486373385, now seen corresponding path program 1 times [2020-10-16 12:09:16,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:09:16,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098770602] [2020-10-16 12:09:16,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:09:16,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:09:16,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:09:16,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098770602] [2020-10-16 12:09:16,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:09:16,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:09:16,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468024845] [2020-10-16 12:09:16,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:09:16,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:09:16,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:09:16,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:09:16,668 INFO L87 Difference]: Start difference. First operand 192 states and 511 transitions. Second operand 4 states. [2020-10-16 12:09:16,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:09:16,718 INFO L93 Difference]: Finished difference Result 224 states and 554 transitions. [2020-10-16 12:09:16,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:09:16,720 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-16 12:09:16,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:09:16,722 INFO L225 Difference]: With dead ends: 224 [2020-10-16 12:09:16,722 INFO L226 Difference]: Without dead ends: 160 [2020-10-16 12:09:16,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:09:16,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-16 12:09:16,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2020-10-16 12:09:16,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-16 12:09:16,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 383 transitions. [2020-10-16 12:09:16,739 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 383 transitions. Word has length 12 [2020-10-16 12:09:16,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:09:16,740 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 383 transitions. [2020-10-16 12:09:16,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:09:16,740 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 383 transitions. [2020-10-16 12:09:16,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:09:16,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:09:16,742 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:09:16,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 12:09:16,742 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:09:16,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:09:16,743 INFO L82 PathProgramCache]: Analyzing trace with hash 887113091, now seen corresponding path program 1 times [2020-10-16 12:09:16,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:09:16,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513403584] [2020-10-16 12:09:16,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:09:16,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:09:16,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:09:16,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513403584] [2020-10-16 12:09:16,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:09:16,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:09:16,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147046310] [2020-10-16 12:09:16,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 12:09:16,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:09:16,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 12:09:16,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:09:16,794 INFO L87 Difference]: Start difference. First operand 160 states and 383 transitions. Second operand 5 states. [2020-10-16 12:09:16,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:09:16,835 INFO L93 Difference]: Finished difference Result 160 states and 362 transitions. [2020-10-16 12:09:16,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 12:09:16,835 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 12:09:16,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:09:16,836 INFO L225 Difference]: With dead ends: 160 [2020-10-16 12:09:16,837 INFO L226 Difference]: Without dead ends: 123 [2020-10-16 12:09:16,837 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 12:09:16,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-16 12:09:16,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-10-16 12:09:16,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-16 12:09:16,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 272 transitions. [2020-10-16 12:09:16,843 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 272 transitions. Word has length 13 [2020-10-16 12:09:16,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:09:16,843 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 272 transitions. [2020-10-16 12:09:16,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 12:09:16,843 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 272 transitions. [2020-10-16 12:09:16,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:09:16,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:09:16,845 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:09:16,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 12:09:16,845 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:09:16,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:09:16,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1920279248, now seen corresponding path program 1 times [2020-10-16 12:09:16,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:09:16,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947677013] [2020-10-16 12:09:16,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:09:16,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:09:16,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:09:16,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947677013] [2020-10-16 12:09:16,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:09:16,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:09:16,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522672176] [2020-10-16 12:09:16,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:09:16,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:09:16,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:09:16,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:09:16,878 INFO L87 Difference]: Start difference. First operand 123 states and 272 transitions. Second operand 3 states. [2020-10-16 12:09:16,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:09:16,885 INFO L93 Difference]: Finished difference Result 155 states and 330 transitions. [2020-10-16 12:09:16,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:09:16,886 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-16 12:09:16,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:09:16,887 INFO L225 Difference]: With dead ends: 155 [2020-10-16 12:09:16,887 INFO L226 Difference]: Without dead ends: 124 [2020-10-16 12:09:16,888 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:09:16,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-16 12:09:16,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2020-10-16 12:09:16,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-16 12:09:16,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 257 transitions. [2020-10-16 12:09:16,892 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 257 transitions. Word has length 14 [2020-10-16 12:09:16,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:09:16,893 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 257 transitions. [2020-10-16 12:09:16,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:09:16,893 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 257 transitions. [2020-10-16 12:09:16,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:09:16,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:09:16,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:09:16,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 12:09:16,895 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:09:16,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:09:16,895 INFO L82 PathProgramCache]: Analyzing trace with hash 451653261, now seen corresponding path program 1 times [2020-10-16 12:09:16,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:09:16,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528945880] [2020-10-16 12:09:16,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:09:16,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:09:16,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:09:16,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528945880] [2020-10-16 12:09:16,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:09:16,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:09:16,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369999763] [2020-10-16 12:09:16,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:09:16,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:09:16,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:09:16,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:09:16,960 INFO L87 Difference]: Start difference. First operand 122 states and 257 transitions. Second operand 4 states. [2020-10-16 12:09:16,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:09:16,991 INFO L93 Difference]: Finished difference Result 154 states and 308 transitions. [2020-10-16 12:09:16,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 12:09:16,992 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-16 12:09:16,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:09:16,993 INFO L225 Difference]: With dead ends: 154 [2020-10-16 12:09:16,993 INFO L226 Difference]: Without dead ends: 116 [2020-10-16 12:09:16,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:09:16,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-16 12:09:16,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 114. [2020-10-16 12:09:16,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-16 12:09:17,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 222 transitions. [2020-10-16 12:09:17,000 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 222 transitions. Word has length 15 [2020-10-16 12:09:17,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:09:17,001 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 222 transitions. [2020-10-16 12:09:17,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:09:17,001 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 222 transitions. [2020-10-16 12:09:17,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:09:17,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:09:17,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:09:17,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 12:09:17,009 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:09:17,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:09:17,011 INFO L82 PathProgramCache]: Analyzing trace with hash -600886075, now seen corresponding path program 1 times [2020-10-16 12:09:17,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:09:17,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639891113] [2020-10-16 12:09:17,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:09:17,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:09:17,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:09:17,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639891113] [2020-10-16 12:09:17,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:09:17,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 12:09:17,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310964287] [2020-10-16 12:09:17,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 12:09:17,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:09:17,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 12:09:17,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 12:09:17,106 INFO L87 Difference]: Start difference. First operand 114 states and 222 transitions. Second operand 6 states. [2020-10-16 12:09:17,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:09:17,175 INFO L93 Difference]: Finished difference Result 110 states and 212 transitions. [2020-10-16 12:09:17,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 12:09:17,176 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-16 12:09:17,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:09:17,177 INFO L225 Difference]: With dead ends: 110 [2020-10-16 12:09:17,177 INFO L226 Difference]: Without dead ends: 38 [2020-10-16 12:09:17,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:09:17,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-16 12:09:17,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-16 12:09:17,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-16 12:09:17,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 62 transitions. [2020-10-16 12:09:17,180 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 62 transitions. Word has length 15 [2020-10-16 12:09:17,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:09:17,181 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 62 transitions. [2020-10-16 12:09:17,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 12:09:17,181 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 62 transitions. [2020-10-16 12:09:17,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 12:09:17,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:09:17,182 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:09:17,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 12:09:17,182 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:09:17,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:09:17,182 INFO L82 PathProgramCache]: Analyzing trace with hash 13395029, now seen corresponding path program 1 times [2020-10-16 12:09:17,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:09:17,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861174956] [2020-10-16 12:09:17,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:09:17,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:09:17,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:09:17,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861174956] [2020-10-16 12:09:17,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:09:17,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:09:17,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106507731] [2020-10-16 12:09:17,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:09:17,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:09:17,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:09:17,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:09:17,252 INFO L87 Difference]: Start difference. First operand 38 states and 62 transitions. Second operand 4 states. [2020-10-16 12:09:17,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:09:17,271 INFO L93 Difference]: Finished difference Result 56 states and 90 transitions. [2020-10-16 12:09:17,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:09:17,272 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-16 12:09:17,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:09:17,272 INFO L225 Difference]: With dead ends: 56 [2020-10-16 12:09:17,273 INFO L226 Difference]: Without dead ends: 35 [2020-10-16 12:09:17,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:09:17,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-16 12:09:17,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-16 12:09:17,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-16 12:09:17,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2020-10-16 12:09:17,275 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 17 [2020-10-16 12:09:17,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:09:17,276 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2020-10-16 12:09:17,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:09:17,276 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2020-10-16 12:09:17,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 12:09:17,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:09:17,277 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:09:17,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 12:09:17,278 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:09:17,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:09:17,279 INFO L82 PathProgramCache]: Analyzing trace with hash 265740449, now seen corresponding path program 2 times [2020-10-16 12:09:17,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:09:17,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783690580] [2020-10-16 12:09:17,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:09:17,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:09:17,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:09:17,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783690580] [2020-10-16 12:09:17,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:09:17,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:09:17,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439429471] [2020-10-16 12:09:17,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:09:17,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:09:17,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:09:17,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:09:17,330 INFO L87 Difference]: Start difference. First operand 35 states and 56 transitions. Second operand 4 states. [2020-10-16 12:09:17,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:09:17,349 INFO L93 Difference]: Finished difference Result 34 states and 55 transitions. [2020-10-16 12:09:17,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 12:09:17,350 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-16 12:09:17,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:09:17,350 INFO L225 Difference]: With dead ends: 34 [2020-10-16 12:09:17,351 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 12:09:17,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:09:17,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 12:09:17,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 12:09:17,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 12:09:17,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 12:09:17,352 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-16 12:09:17,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:09:17,354 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 12:09:17,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:09:17,354 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 12:09:17,354 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 12:09:17,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-16 12:09:17,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 12:09:17 BasicIcfg [2020-10-16 12:09:17,358 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 12:09:17,361 INFO L168 Benchmark]: Toolchain (without parser) took 4197.44 ms. Allocated memory was 139.5 MB in the beginning and 248.0 MB in the end (delta: 108.5 MB). Free memory was 100.9 MB in the beginning and 186.1 MB in the end (delta: -85.2 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2020-10-16 12:09:17,362 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.5 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-16 12:09:17,367 INFO L168 Benchmark]: CACSL2BoogieTranslator took 651.72 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 100.5 MB in the beginning and 161.2 MB in the end (delta: -60.7 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. [2020-10-16 12:09:17,368 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.46 ms. Allocated memory is still 203.4 MB. Free memory was 161.2 MB in the beginning and 159.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-16 12:09:17,369 INFO L168 Benchmark]: Boogie Preprocessor took 24.57 ms. Allocated memory is still 203.4 MB. Free memory was 159.3 MB in the beginning and 157.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-16 12:09:17,370 INFO L168 Benchmark]: RCFGBuilder took 382.55 ms. Allocated memory is still 203.4 MB. Free memory was 157.3 MB in the beginning and 135.6 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-10-16 12:09:17,375 INFO L168 Benchmark]: TraceAbstraction took 3085.76 ms. Allocated memory was 203.4 MB in the beginning and 248.0 MB in the end (delta: 44.6 MB). Free memory was 134.6 MB in the beginning and 186.1 MB in the end (delta: -51.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 12:09:17,382 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.5 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 651.72 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 100.5 MB in the beginning and 161.2 MB in the end (delta: -60.7 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 47.46 ms. Allocated memory is still 203.4 MB. Free memory was 161.2 MB in the beginning and 159.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.57 ms. Allocated memory is still 203.4 MB. Free memory was 159.3 MB in the beginning and 157.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 382.55 ms. Allocated memory is still 203.4 MB. Free memory was 157.3 MB in the beginning and 135.6 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3085.76 ms. Allocated memory was 203.4 MB in the beginning and 248.0 MB in the end (delta: 44.6 MB). Free memory was 134.6 MB in the beginning and 186.1 MB in the end (delta: -51.4 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 666 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 31 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.4s, 77 PlacesBefore, 31 PlacesAfterwards, 69 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 59 TotalNumberOfCompositions, 2962 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.9s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 215 SDtfs, 137 SDslu, 234 SDs, 0 SdLazy, 131 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 141 NumberOfCodeBlocks, 141 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 130 ConstructedInterpolants, 0 QuantifiedInterpolants, 4304 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...