/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 11:18:55,905 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 11:18:55,908 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 11:18:55,944 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 11:18:55,945 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 11:18:55,952 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 11:18:55,955 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 11:18:55,959 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 11:18:55,961 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 11:18:55,963 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 11:18:55,964 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 11:18:55,965 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 11:18:55,965 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 11:18:55,968 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 11:18:55,970 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 11:18:55,971 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 11:18:55,973 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 11:18:55,974 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 11:18:55,976 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 11:18:55,983 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 11:18:55,985 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 11:18:55,986 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 11:18:55,987 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 11:18:55,987 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 11:18:55,999 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 11:18:55,999 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 11:18:56,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 11:18:56,002 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 11:18:56,002 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 11:18:56,003 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 11:18:56,003 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 11:18:56,004 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 11:18:56,010 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 11:18:56,010 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 11:18:56,011 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 11:18:56,011 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 11:18:56,012 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 11:18:56,012 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 11:18:56,012 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 11:18:56,015 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 11:18:56,016 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 11:18:56,017 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-16 11:18:56,051 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 11:18:56,051 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 11:18:56,053 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 11:18:56,053 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 11:18:56,053 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 11:18:56,054 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 11:18:56,054 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 11:18:56,054 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 11:18:56,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 11:18:56,055 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 11:18:56,055 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 11:18:56,056 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 11:18:56,056 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 11:18:56,056 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 11:18:56,056 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 11:18:56,057 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 11:18:56,057 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 11:18:56,057 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 11:18:56,057 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 11:18:56,058 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 11:18:56,058 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 11:18:56,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 11:18:56,058 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 11:18:56,059 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 11:18:56,059 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 11:18:56,059 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 11:18:56,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 11:18:56,059 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 11:18:56,060 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-16 11:18:56,060 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 11:18:56,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 11:18:56,377 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 11:18:56,380 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 11:18:56,382 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 11:18:56,382 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 11:18:56,383 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.opt.i [2020-10-16 11:18:56,437 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7cfa6adcd/fa5d8aa1631c4deeb0b176bbf06a600a/FLAG38273baf2 [2020-10-16 11:18:56,970 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 11:18:56,971 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe012_tso.opt.i [2020-10-16 11:18:56,989 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7cfa6adcd/fa5d8aa1631c4deeb0b176bbf06a600a/FLAG38273baf2 [2020-10-16 11:18:57,261 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7cfa6adcd/fa5d8aa1631c4deeb0b176bbf06a600a [2020-10-16 11:18:57,268 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 11:18:57,270 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 11:18:57,271 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 11:18:57,271 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 11:18:57,275 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 11:18:57,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:18:57" (1/1) ... [2020-10-16 11:18:57,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d3dc4dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:18:57, skipping insertion in model container [2020-10-16 11:18:57,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:18:57" (1/1) ... [2020-10-16 11:18:57,288 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 11:18:57,340 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 11:18:57,767 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:18:57,780 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 11:18:57,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:18:57,910 INFO L208 MainTranslator]: Completed translation [2020-10-16 11:18:57,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:18:57 WrapperNode [2020-10-16 11:18:57,912 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 11:18:57,914 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 11:18:57,914 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 11:18:57,914 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 11:18:57,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:18:57" (1/1) ... [2020-10-16 11:18:57,940 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:18:57" (1/1) ... [2020-10-16 11:18:57,958 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 11:18:57,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 11:18:57,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 11:18:57,959 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 11:18:57,966 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:18:57" (1/1) ... [2020-10-16 11:18:57,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:18:57" (1/1) ... [2020-10-16 11:18:57,969 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:18:57" (1/1) ... [2020-10-16 11:18:57,970 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:18:57" (1/1) ... [2020-10-16 11:18:57,976 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:18:57" (1/1) ... [2020-10-16 11:18:57,978 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:18:57" (1/1) ... [2020-10-16 11:18:57,980 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:18:57" (1/1) ... [2020-10-16 11:18:57,983 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 11:18:57,984 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 11:18:57,984 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 11:18:57,984 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 11:18:57,985 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:18:57" (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 11:18:58,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 11:18:58,045 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 11:18:58,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 11:18:58,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 11:18:58,046 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 11:18:58,046 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 11:18:58,047 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 11:18:58,047 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 11:18:58,048 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 11:18:58,048 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 11:18:58,048 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 11:18:58,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 11:18:58,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 11:18:58,050 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 11:18:58,394 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 11:18:58,395 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 11:18:58,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:18:58 BoogieIcfgContainer [2020-10-16 11:18:58,397 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 11:18:58,398 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 11:18:58,398 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 11:18:58,402 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 11:18:58,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 11:18:57" (1/3) ... [2020-10-16 11:18:58,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4728559d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:18:58, skipping insertion in model container [2020-10-16 11:18:58,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:18:57" (2/3) ... [2020-10-16 11:18:58,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4728559d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:18:58, skipping insertion in model container [2020-10-16 11:18:58,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:18:58" (3/3) ... [2020-10-16 11:18:58,405 INFO L111 eAbstractionObserver]: Analyzing ICFG safe012_tso.opt.i [2020-10-16 11:18:58,417 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 11:18:58,417 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 11:18:58,426 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 11:18:58,427 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 11:18:58,456 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:18:58,457 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:18:58,457 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:18:58,457 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:18:58,458 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:18:58,458 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:18:58,459 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:18:58,459 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:18:58,459 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:18:58,459 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:18:58,460 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:18:58,460 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:18:58,460 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:18:58,461 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:18:58,461 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:18:58,461 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:18:58,462 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:18:58,462 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:18:58,466 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:18:58,466 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:18:58,466 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:18:58,467 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:18:58,472 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:18:58,472 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:18:58,473 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:18:58,473 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:18:58,475 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:18:58,476 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:18:58,476 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:18:58,476 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:18:58,479 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 11:18:58,492 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 11:18:58,510 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:18:58,510 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:18:58,510 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 11:18:58,511 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:18:58,511 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:18:58,511 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:18:58,511 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:18:58,511 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:18:58,524 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 11:18:58,526 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 71 transitions, 157 flow [2020-10-16 11:18:58,529 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 71 transitions, 157 flow [2020-10-16 11:18:58,531 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-10-16 11:18:58,575 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-10-16 11:18:58,575 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 11:18:58,581 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 11:18:58,586 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-16 11:18:59,882 INFO L132 LiptonReduction]: Checked pairs total: 2579 [2020-10-16 11:18:59,882 INFO L134 LiptonReduction]: Total number of compositions: 58 [2020-10-16 11:18:59,889 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-10-16 11:18:59,918 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-10-16 11:18:59,920 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-10-16 11:18:59,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 11:18:59,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:18:59,930 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:18:59,930 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:18:59,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:18:59,936 INFO L82 PathProgramCache]: Analyzing trace with hash -691335731, now seen corresponding path program 1 times [2020-10-16 11:18:59,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:18:59,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845423180] [2020-10-16 11:18:59,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:19:00,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:19:00,116 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 11:19:00,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845423180] [2020-10-16 11:19:00,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:19:00,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:19:00,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129298419] [2020-10-16 11:19:00,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 11:19:00,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:19:00,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 11:19:00,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 11:19:00,140 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-10-16 11:19:00,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:19:00,177 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-10-16 11:19:00,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 11:19:00,178 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-16 11:19:00,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:19:00,195 INFO L225 Difference]: With dead ends: 362 [2020-10-16 11:19:00,195 INFO L226 Difference]: Without dead ends: 298 [2020-10-16 11:19:00,197 INFO L677 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 [2020-10-16 11:19:00,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-16 11:19:00,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-10-16 11:19:00,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-16 11:19:00,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-10-16 11:19:00,274 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-10-16 11:19:00,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:19:00,275 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-10-16 11:19:00,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 11:19:00,275 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-10-16 11:19:00,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 11:19:00,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:19:00,277 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:19:00,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 11:19:00,278 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:19:00,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:19:00,278 INFO L82 PathProgramCache]: Analyzing trace with hash 43425274, now seen corresponding path program 1 times [2020-10-16 11:19:00,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:19:00,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850305476] [2020-10-16 11:19:00,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:19:00,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:19:00,415 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 11:19:00,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850305476] [2020-10-16 11:19:00,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:19:00,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:19:00,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033379805] [2020-10-16 11:19:00,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:19:00,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:19:00,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:19:00,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:19:00,419 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-10-16 11:19:00,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:19:00,454 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-10-16 11:19:00,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 11:19:00,454 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-16 11:19:00,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:19:00,458 INFO L225 Difference]: With dead ends: 330 [2020-10-16 11:19:00,458 INFO L226 Difference]: Without dead ends: 266 [2020-10-16 11:19:00,459 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 11:19:00,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-16 11:19:00,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-10-16 11:19:00,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-16 11:19:00,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-10-16 11:19:00,481 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-10-16 11:19:00,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:19:00,481 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-10-16 11:19:00,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:19:00,482 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-10-16 11:19:00,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 11:19:00,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:19:00,483 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:19:00,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 11:19:00,484 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:19:00,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:19:00,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1854523641, now seen corresponding path program 1 times [2020-10-16 11:19:00,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:19:00,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147486985] [2020-10-16 11:19:00,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:19:00,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:19:00,559 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 11:19:00,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147486985] [2020-10-16 11:19:00,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:19:00,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:19:00,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342056176] [2020-10-16 11:19:00,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:19:00,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:19:00,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:19:00,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:19:00,561 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 4 states. [2020-10-16 11:19:00,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:19:00,586 INFO L93 Difference]: Finished difference Result 290 states and 786 transitions. [2020-10-16 11:19:00,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 11:19:00,587 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-16 11:19:00,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:19:00,589 INFO L225 Difference]: With dead ends: 290 [2020-10-16 11:19:00,589 INFO L226 Difference]: Without dead ends: 242 [2020-10-16 11:19:00,590 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 11:19:00,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-10-16 11:19:00,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-10-16 11:19:00,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-10-16 11:19:00,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 670 transitions. [2020-10-16 11:19:00,606 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 670 transitions. Word has length 10 [2020-10-16 11:19:00,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:19:00,606 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 670 transitions. [2020-10-16 11:19:00,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:19:00,607 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 670 transitions. [2020-10-16 11:19:00,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 11:19:00,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:19:00,608 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:19:00,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 11:19:00,609 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:19:00,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:19:00,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1654538757, now seen corresponding path program 1 times [2020-10-16 11:19:00,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:19:00,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285628725] [2020-10-16 11:19:00,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:19:00,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:19:00,695 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 11:19:00,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285628725] [2020-10-16 11:19:00,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:19:00,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:19:00,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603297692] [2020-10-16 11:19:00,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:19:00,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:19:00,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:19:00,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:19:00,700 INFO L87 Difference]: Start difference. First operand 242 states and 670 transitions. Second operand 5 states. [2020-10-16 11:19:00,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:19:00,747 INFO L93 Difference]: Finished difference Result 302 states and 815 transitions. [2020-10-16 11:19:00,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:19:00,747 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-16 11:19:00,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:19:00,749 INFO L225 Difference]: With dead ends: 302 [2020-10-16 11:19:00,749 INFO L226 Difference]: Without dead ends: 140 [2020-10-16 11:19:00,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-16 11:19:00,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-16 11:19:00,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-10-16 11:19:00,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-16 11:19:00,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 354 transitions. [2020-10-16 11:19:00,757 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 354 transitions. Word has length 11 [2020-10-16 11:19:00,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:19:00,757 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 354 transitions. [2020-10-16 11:19:00,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:19:00,758 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 354 transitions. [2020-10-16 11:19:00,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 11:19:00,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:19:00,759 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:19:00,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 11:19:00,759 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:19:00,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:19:00,760 INFO L82 PathProgramCache]: Analyzing trace with hash -234537171, now seen corresponding path program 1 times [2020-10-16 11:19:00,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:19:00,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366139348] [2020-10-16 11:19:00,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:19:00,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:19:00,837 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 11:19:00,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366139348] [2020-10-16 11:19:00,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:19:00,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:19:00,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212918412] [2020-10-16 11:19:00,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:19:00,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:19:00,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:19:00,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:19:00,840 INFO L87 Difference]: Start difference. First operand 140 states and 354 transitions. Second operand 5 states. [2020-10-16 11:19:00,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:19:00,892 INFO L93 Difference]: Finished difference Result 176 states and 428 transitions. [2020-10-16 11:19:00,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:19:00,892 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-16 11:19:00,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:19:00,893 INFO L225 Difference]: With dead ends: 176 [2020-10-16 11:19:00,893 INFO L226 Difference]: Without dead ends: 80 [2020-10-16 11:19:00,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-16 11:19:00,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-16 11:19:00,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-10-16 11:19:00,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-16 11:19:00,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 176 transitions. [2020-10-16 11:19:00,918 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 176 transitions. Word has length 12 [2020-10-16 11:19:00,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:19:00,918 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 176 transitions. [2020-10-16 11:19:00,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:19:00,919 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 176 transitions. [2020-10-16 11:19:00,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 11:19:00,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:19:00,920 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:19:00,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 11:19:00,920 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:19:00,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:19:00,920 INFO L82 PathProgramCache]: Analyzing trace with hash -627503362, now seen corresponding path program 1 times [2020-10-16 11:19:00,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:19:00,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566770027] [2020-10-16 11:19:00,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:19:00,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:19:01,012 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 11:19:01,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566770027] [2020-10-16 11:19:01,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:19:01,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:19:01,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386255795] [2020-10-16 11:19:01,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:19:01,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:19:01,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:19:01,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:19:01,017 INFO L87 Difference]: Start difference. First operand 80 states and 176 transitions. Second operand 4 states. [2020-10-16 11:19:01,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:19:01,052 INFO L93 Difference]: Finished difference Result 91 states and 181 transitions. [2020-10-16 11:19:01,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 11:19:01,053 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-16 11:19:01,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:19:01,054 INFO L225 Difference]: With dead ends: 91 [2020-10-16 11:19:01,054 INFO L226 Difference]: Without dead ends: 69 [2020-10-16 11:19:01,054 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 11:19:01,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-16 11:19:01,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-10-16 11:19:01,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-16 11:19:01,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 138 transitions. [2020-10-16 11:19:01,059 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 138 transitions. Word has length 14 [2020-10-16 11:19:01,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:19:01,060 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 138 transitions. [2020-10-16 11:19:01,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:19:01,060 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 138 transitions. [2020-10-16 11:19:01,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 11:19:01,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:19:01,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:19:01,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 11:19:01,065 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:19:01,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:19:01,065 INFO L82 PathProgramCache]: Analyzing trace with hash 822538733, now seen corresponding path program 1 times [2020-10-16 11:19:01,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:19:01,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309506028] [2020-10-16 11:19:01,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:19:01,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:19:01,142 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 11:19:01,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309506028] [2020-10-16 11:19:01,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:19:01,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 11:19:01,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304498399] [2020-10-16 11:19:01,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:19:01,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:19:01,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:19:01,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:19:01,144 INFO L87 Difference]: Start difference. First operand 69 states and 138 transitions. Second operand 5 states. [2020-10-16 11:19:01,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:19:01,188 INFO L93 Difference]: Finished difference Result 65 states and 113 transitions. [2020-10-16 11:19:01,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:19:01,189 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-16 11:19:01,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:19:01,190 INFO L225 Difference]: With dead ends: 65 [2020-10-16 11:19:01,190 INFO L226 Difference]: Without dead ends: 50 [2020-10-16 11:19:01,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 11:19:01,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-16 11:19:01,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-16 11:19:01,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-16 11:19:01,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 83 transitions. [2020-10-16 11:19:01,193 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 83 transitions. Word has length 15 [2020-10-16 11:19:01,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:19:01,193 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 83 transitions. [2020-10-16 11:19:01,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:19:01,193 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 83 transitions. [2020-10-16 11:19:01,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-16 11:19:01,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:19:01,194 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:19:01,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 11:19:01,194 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:19:01,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:19:01,195 INFO L82 PathProgramCache]: Analyzing trace with hash -246333940, now seen corresponding path program 1 times [2020-10-16 11:19:01,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:19:01,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504641759] [2020-10-16 11:19:01,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:19:01,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:19:01,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:19:01,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504641759] [2020-10-16 11:19:01,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:19:01,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:19:01,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991518275] [2020-10-16 11:19:01,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 11:19:01,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:19:01,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 11:19:01,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 11:19:01,255 INFO L87 Difference]: Start difference. First operand 50 states and 83 transitions. Second operand 6 states. [2020-10-16 11:19:01,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:19:01,298 INFO L93 Difference]: Finished difference Result 43 states and 67 transitions. [2020-10-16 11:19:01,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 11:19:01,298 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-16 11:19:01,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:19:01,299 INFO L225 Difference]: With dead ends: 43 [2020-10-16 11:19:01,299 INFO L226 Difference]: Without dead ends: 37 [2020-10-16 11:19:01,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:19:01,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-16 11:19:01,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-16 11:19:01,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-16 11:19:01,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 57 transitions. [2020-10-16 11:19:01,301 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 57 transitions. Word has length 16 [2020-10-16 11:19:01,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:19:01,301 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 57 transitions. [2020-10-16 11:19:01,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 11:19:01,302 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 57 transitions. [2020-10-16 11:19:01,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-16 11:19:01,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:19:01,303 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:19:01,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 11:19:01,303 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:19:01,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:19:01,303 INFO L82 PathProgramCache]: Analyzing trace with hash -570484421, now seen corresponding path program 1 times [2020-10-16 11:19:01,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:19:01,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534282314] [2020-10-16 11:19:01,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:19:01,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:19:01,347 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 11:19:01,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534282314] [2020-10-16 11:19:01,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:19:01,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 11:19:01,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885530059] [2020-10-16 11:19:01,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:19:01,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:19:01,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:19:01,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:19:01,349 INFO L87 Difference]: Start difference. First operand 37 states and 57 transitions. Second operand 5 states. [2020-10-16 11:19:01,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:19:01,371 INFO L93 Difference]: Finished difference Result 36 states and 56 transitions. [2020-10-16 11:19:01,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 11:19:01,371 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-16 11:19:01,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:19:01,372 INFO L225 Difference]: With dead ends: 36 [2020-10-16 11:19:01,372 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 11:19:01,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:19:01,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 11:19:01,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 11:19:01,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 11:19:01,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 11:19:01,373 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-16 11:19:01,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:19:01,373 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 11:19:01,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:19:01,374 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 11:19:01,374 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 11:19:01,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 11:19:01,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 11:19:01 BasicIcfg [2020-10-16 11:19:01,377 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 11:19:01,380 INFO L168 Benchmark]: Toolchain (without parser) took 4109.31 ms. Allocated memory was 148.4 MB in the beginning and 245.4 MB in the end (delta: 97.0 MB). Free memory was 101.4 MB in the beginning and 147.7 MB in the end (delta: -46.2 MB). Peak memory consumption was 50.8 MB. Max. memory is 7.1 GB. [2020-10-16 11:19:01,381 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 148.4 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 11:19:01,382 INFO L168 Benchmark]: CACSL2BoogieTranslator took 641.18 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 101.2 MB in the beginning and 161.0 MB in the end (delta: -59.8 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-10-16 11:19:01,382 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.54 ms. Allocated memory is still 204.5 MB. Free memory was 161.0 MB in the beginning and 158.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 11:19:01,383 INFO L168 Benchmark]: Boogie Preprocessor took 25.27 ms. Allocated memory is still 204.5 MB. Free memory was 158.9 MB in the beginning and 157.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-16 11:19:01,384 INFO L168 Benchmark]: RCFGBuilder took 413.08 ms. Allocated memory is still 204.5 MB. Free memory was 157.0 MB in the beginning and 135.1 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-10-16 11:19:01,385 INFO L168 Benchmark]: TraceAbstraction took 2979.47 ms. Allocated memory was 204.5 MB in the beginning and 245.4 MB in the end (delta: 40.9 MB). Free memory was 134.5 MB in the beginning and 147.7 MB in the end (delta: -13.2 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. [2020-10-16 11:19:01,389 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 148.4 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 641.18 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 101.2 MB in the beginning and 161.0 MB in the end (delta: -59.8 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 44.54 ms. Allocated memory is still 204.5 MB. Free memory was 161.0 MB in the beginning and 158.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.27 ms. Allocated memory is still 204.5 MB. Free memory was 158.9 MB in the beginning and 157.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 413.08 ms. Allocated memory is still 204.5 MB. Free memory was 157.0 MB in the beginning and 135.1 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2979.47 ms. Allocated memory was 204.5 MB in the beginning and 245.4 MB in the end (delta: 40.9 MB). Free memory was 134.5 MB in the beginning and 147.7 MB in the end (delta: -13.2 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 890 VarBasedMoverChecksPositive, 39 VarBasedMoverChecksNegative, 10 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 83 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 79 PlacesBefore, 32 PlacesAfterwards, 71 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 58 TotalNumberOfCompositions, 2579 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, 70 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.8s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 188 SDtfs, 183 SDslu, 268 SDs, 0 SdLazy, 114 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 4062 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...