/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/safe037_power.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-fae578e [2019-12-18 15:15:02,055 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-18 15:15:02,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-18 15:15:02,070 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-18 15:15:02,071 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-18 15:15:02,072 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-18 15:15:02,073 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-18 15:15:02,075 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-18 15:15:02,077 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-18 15:15:02,078 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-18 15:15:02,079 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-18 15:15:02,080 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-18 15:15:02,080 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-18 15:15:02,081 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-18 15:15:02,082 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-18 15:15:02,083 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-18 15:15:02,084 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-18 15:15:02,085 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-18 15:15:02,087 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-18 15:15:02,089 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-18 15:15:02,091 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-18 15:15:02,092 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-18 15:15:02,096 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-18 15:15:02,096 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-18 15:15:02,101 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-12-18 15:15:02,107 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-18 15:15:02,108 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-18 15:15:02,109 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-18 15:15:02,113 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-18 15:15:02,114 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-18 15:15:02,114 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-18 15:15:02,115 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-18 15:15:02,116 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-18 15:15:02,116 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-18 15:15:02,119 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-18 15:15:02,123 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-18 15:15:02,124 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-18 15:15:02,143 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-18 15:15:02,143 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-18 15:15:02,144 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-18 15:15:02,145 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-18 15:15:02,145 INFO L138 SettingsManager]: * Use SBE=true [2019-12-18 15:15:02,145 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-18 15:15:02,145 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-18 15:15:02,146 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-18 15:15:02,146 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-18 15:15:02,146 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-18 15:15:02,146 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-18 15:15:02,146 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-18 15:15:02,147 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-18 15:15:02,147 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-18 15:15:02,147 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-18 15:15:02,147 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-18 15:15:02,147 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-18 15:15:02,148 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-18 15:15:02,148 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-18 15:15:02,148 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-18 15:15:02,148 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-18 15:15:02,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-18 15:15:02,149 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-18 15:15:02,149 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-18 15:15:02,149 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-18 15:15:02,150 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-18 15:15:02,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-18 15:15:02,150 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-18 15:15:02,150 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-18 15:15:02,150 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-18 15:15:02,457 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-18 15:15:02,474 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-18 15:15:02,478 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-18 15:15:02,479 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-18 15:15:02,480 INFO L275 PluginConnector]: CDTParser initialized [2019-12-18 15:15:02,480 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe037_power.oepc.i [2019-12-18 15:15:02,542 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9e720d4d/2c4bc113d95c47e18f6ac0a862d340b0/FLAG283700fad [2019-12-18 15:15:03,133 INFO L306 CDTParser]: Found 1 translation units. [2019-12-18 15:15:03,133 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037_power.oepc.i [2019-12-18 15:15:03,148 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9e720d4d/2c4bc113d95c47e18f6ac0a862d340b0/FLAG283700fad [2019-12-18 15:15:03,442 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9e720d4d/2c4bc113d95c47e18f6ac0a862d340b0 [2019-12-18 15:15:03,450 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-18 15:15:03,453 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-18 15:15:03,454 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-18 15:15:03,454 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-18 15:15:03,457 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-18 15:15:03,458 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 03:15:03" (1/1) ... [2019-12-18 15:15:03,461 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4df1b1de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:15:03, skipping insertion in model container [2019-12-18 15:15:03,461 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 03:15:03" (1/1) ... [2019-12-18 15:15:03,468 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-18 15:15:03,525 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-18 15:15:04,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 15:15:04,075 INFO L203 MainTranslator]: Completed pre-run [2019-12-18 15:15:04,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 15:15:04,232 INFO L208 MainTranslator]: Completed translation [2019-12-18 15:15:04,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:15:04 WrapperNode [2019-12-18 15:15:04,233 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-18 15:15:04,234 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-18 15:15:04,234 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-18 15:15:04,234 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-18 15:15:04,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:15:04" (1/1) ... [2019-12-18 15:15:04,262 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:15:04" (1/1) ... [2019-12-18 15:15:04,284 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-18 15:15:04,285 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-18 15:15:04,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-18 15:15:04,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-18 15:15:04,293 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:15:04" (1/1) ... [2019-12-18 15:15:04,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:15:04" (1/1) ... [2019-12-18 15:15:04,296 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:15:04" (1/1) ... [2019-12-18 15:15:04,296 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:15:04" (1/1) ... [2019-12-18 15:15:04,302 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:15:04" (1/1) ... [2019-12-18 15:15:04,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:15:04" (1/1) ... [2019-12-18 15:15:04,307 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:15:04" (1/1) ... [2019-12-18 15:15:04,310 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-18 15:15:04,310 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-18 15:15:04,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-18 15:15:04,311 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-18 15:15:04,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:15:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-18 15:15:04,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-18 15:15:04,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-18 15:15:04,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-18 15:15:04,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-18 15:15:04,381 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-18 15:15:04,381 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-18 15:15:04,381 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-18 15:15:04,382 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-18 15:15:04,382 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-18 15:15:04,382 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-18 15:15:04,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-18 15:15:04,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-18 15:15:04,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-18 15:15:04,384 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-18 15:15:04,763 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-18 15:15:04,764 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-18 15:15:04,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 03:15:04 BoogieIcfgContainer [2019-12-18 15:15:04,765 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-18 15:15:04,766 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-18 15:15:04,766 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-18 15:15:04,769 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-18 15:15:04,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 03:15:03" (1/3) ... [2019-12-18 15:15:04,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@160f9e62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 03:15:04, skipping insertion in model container [2019-12-18 15:15:04,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:15:04" (2/3) ... [2019-12-18 15:15:04,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@160f9e62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 03:15:04, skipping insertion in model container [2019-12-18 15:15:04,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 03:15:04" (3/3) ... [2019-12-18 15:15:04,773 INFO L109 eAbstractionObserver]: Analyzing ICFG safe037_power.oepc.i [2019-12-18 15:15:04,782 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-18 15:15:04,783 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-18 15:15:04,790 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-18 15:15:04,791 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-18 15:15:04,827 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:15:04,827 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:15:04,827 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:15:04,828 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:15:04,828 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:15:04,829 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:15:04,829 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:15:04,829 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:15:04,830 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:15:04,831 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:15:04,831 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:15:04,831 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:15:04,832 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:15:04,832 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:15:04,832 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:15:04,832 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:15:04,833 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:15:04,833 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:15:04,838 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:15:04,839 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:15:04,839 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:15:04,839 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:15:04,853 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:15:04,853 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:15:04,853 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:15:04,855 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:15:04,860 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:15:04,861 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:15:04,861 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:15:04,861 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:15:04,880 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-18 15:15:04,899 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 15:15:04,899 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 15:15:04,900 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 15:15:04,900 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 15:15:04,900 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 15:15:04,900 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 15:15:04,900 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 15:15:04,900 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 15:15:04,914 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 55 transitions [2019-12-18 15:15:04,917 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 64 places, 55 transitions [2019-12-18 15:15:04,958 INFO L126 PetriNetUnfolder]: 1/52 cut-off events. [2019-12-18 15:15:04,959 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 15:15:04,965 INFO L76 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 52 events. 1/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs. 9/59 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-18 15:15:04,968 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 64 places, 55 transitions [2019-12-18 15:15:04,990 INFO L126 PetriNetUnfolder]: 1/52 cut-off events. [2019-12-18 15:15:04,991 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 15:15:04,992 INFO L76 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 52 events. 1/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs. 9/59 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-18 15:15:04,993 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-18 15:15:04,994 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-18 15:15:06,481 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2019-12-18 15:15:06,538 INFO L206 etLargeBlockEncoding]: Checked pairs total: 425 [2019-12-18 15:15:06,538 INFO L214 etLargeBlockEncoding]: Total number of compositions: 45 [2019-12-18 15:15:06,541 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 17 transitions [2019-12-18 15:15:06,550 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 54 states. [2019-12-18 15:15:06,552 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2019-12-18 15:15:06,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-18 15:15:06,557 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:15:06,558 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:15:06,558 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:15:06,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:15:06,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1086085239, now seen corresponding path program 1 times [2019-12-18 15:15:06,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:15:06,569 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822408804] [2019-12-18 15:15:06,569 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:15:06,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:15:06,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 15:15:06,832 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822408804] [2019-12-18 15:15:06,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:15:06,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 15:15:06,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897495075] [2019-12-18 15:15:06,843 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 15:15:06,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:15:06,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 15:15:06,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 15:15:06,862 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 4 states. [2019-12-18 15:15:06,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:15:06,930 INFO L93 Difference]: Finished difference Result 58 states and 113 transitions. [2019-12-18 15:15:06,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 15:15:06,931 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-18 15:15:06,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:15:06,942 INFO L225 Difference]: With dead ends: 58 [2019-12-18 15:15:06,942 INFO L226 Difference]: Without dead ends: 36 [2019-12-18 15:15:06,943 INFO L631 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 [2019-12-18 15:15:06,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-18 15:15:06,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-12-18 15:15:06,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-12-18 15:15:06,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 68 transitions. [2019-12-18 15:15:06,975 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 68 transitions. Word has length 8 [2019-12-18 15:15:06,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:15:06,976 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 68 transitions. [2019-12-18 15:15:06,976 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 15:15:06,976 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 68 transitions. [2019-12-18 15:15:06,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-18 15:15:06,977 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:15:06,977 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:15:06,978 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:15:06,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:15:06,978 INFO L82 PathProgramCache]: Analyzing trace with hash -744608244, now seen corresponding path program 1 times [2019-12-18 15:15:06,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:15:06,978 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265769888] [2019-12-18 15:15:06,979 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:15:07,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:15:07,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 15:15:07,098 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265769888] [2019-12-18 15:15:07,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:15:07,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 15:15:07,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269594152] [2019-12-18 15:15:07,102 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-18 15:15:07,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:15:07,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-18 15:15:07,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 15:15:07,103 INFO L87 Difference]: Start difference. First operand 36 states and 68 transitions. Second operand 5 states. [2019-12-18 15:15:07,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:15:07,165 INFO L93 Difference]: Finished difference Result 37 states and 62 transitions. [2019-12-18 15:15:07,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 15:15:07,166 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-12-18 15:15:07,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:15:07,167 INFO L225 Difference]: With dead ends: 37 [2019-12-18 15:15:07,167 INFO L226 Difference]: Without dead ends: 30 [2019-12-18 15:15:07,168 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-12-18 15:15:07,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-12-18 15:15:07,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-12-18 15:15:07,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-12-18 15:15:07,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 50 transitions. [2019-12-18 15:15:07,173 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 50 transitions. Word has length 9 [2019-12-18 15:15:07,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:15:07,174 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 50 transitions. [2019-12-18 15:15:07,174 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-18 15:15:07,174 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 50 transitions. [2019-12-18 15:15:07,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-18 15:15:07,175 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:15:07,175 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:15:07,175 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:15:07,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:15:07,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1607968112, now seen corresponding path program 1 times [2019-12-18 15:15:07,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:15:07,176 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187505357] [2019-12-18 15:15:07,176 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:15:07,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:15:07,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 15:15:07,288 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187505357] [2019-12-18 15:15:07,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:15:07,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 15:15:07,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439884232] [2019-12-18 15:15:07,289 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 15:15:07,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:15:07,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 15:15:07,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 15:15:07,291 INFO L87 Difference]: Start difference. First operand 30 states and 50 transitions. Second operand 4 states. [2019-12-18 15:15:07,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:15:07,308 INFO L93 Difference]: Finished difference Result 35 states and 54 transitions. [2019-12-18 15:15:07,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 15:15:07,309 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-18 15:15:07,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:15:07,310 INFO L225 Difference]: With dead ends: 35 [2019-12-18 15:15:07,310 INFO L226 Difference]: Without dead ends: 31 [2019-12-18 15:15:07,310 INFO L631 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 [2019-12-18 15:15:07,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-12-18 15:15:07,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2019-12-18 15:15:07,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-12-18 15:15:07,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 47 transitions. [2019-12-18 15:15:07,315 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 47 transitions. Word has length 10 [2019-12-18 15:15:07,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:15:07,315 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 47 transitions. [2019-12-18 15:15:07,315 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 15:15:07,316 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 47 transitions. [2019-12-18 15:15:07,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-18 15:15:07,316 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:15:07,317 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:15:07,317 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:15:07,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:15:07,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1607961385, now seen corresponding path program 1 times [2019-12-18 15:15:07,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:15:07,318 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476865080] [2019-12-18 15:15:07,318 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:15:07,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:15:07,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 15:15:07,421 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476865080] [2019-12-18 15:15:07,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:15:07,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-18 15:15:07,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048901196] [2019-12-18 15:15:07,422 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-18 15:15:07,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:15:07,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-18 15:15:07,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-12-18 15:15:07,423 INFO L87 Difference]: Start difference. First operand 30 states and 47 transitions. Second operand 6 states. [2019-12-18 15:15:07,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:15:07,513 INFO L93 Difference]: Finished difference Result 28 states and 41 transitions. [2019-12-18 15:15:07,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-18 15:15:07,514 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-12-18 15:15:07,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:15:07,514 INFO L225 Difference]: With dead ends: 28 [2019-12-18 15:15:07,515 INFO L226 Difference]: Without dead ends: 16 [2019-12-18 15:15:07,515 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-12-18 15:15:07,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-12-18 15:15:07,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-12-18 15:15:07,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-12-18 15:15:07,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2019-12-18 15:15:07,522 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 10 [2019-12-18 15:15:07,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:15:07,522 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2019-12-18 15:15:07,522 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-18 15:15:07,523 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2019-12-18 15:15:07,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-18 15:15:07,523 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:15:07,523 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:15:07,524 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:15:07,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:15:07,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1627425577, now seen corresponding path program 1 times [2019-12-18 15:15:07,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:15:07,527 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926981458] [2019-12-18 15:15:07,527 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:15:07,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:15:07,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 15:15:07,604 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926981458] [2019-12-18 15:15:07,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:15:07,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 15:15:07,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434924737] [2019-12-18 15:15:07,604 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 15:15:07,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:15:07,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 15:15:07,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 15:15:07,605 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 4 states. [2019-12-18 15:15:07,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:15:07,622 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2019-12-18 15:15:07,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 15:15:07,623 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-18 15:15:07,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:15:07,623 INFO L225 Difference]: With dead ends: 19 [2019-12-18 15:15:07,624 INFO L226 Difference]: Without dead ends: 14 [2019-12-18 15:15:07,624 INFO L631 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 [2019-12-18 15:15:07,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-12-18 15:15:07,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-12-18 15:15:07,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-12-18 15:15:07,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2019-12-18 15:15:07,627 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2019-12-18 15:15:07,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:15:07,627 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2019-12-18 15:15:07,627 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 15:15:07,627 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2019-12-18 15:15:07,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-18 15:15:07,628 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:15:07,628 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:15:07,628 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:15:07,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:15:07,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1633797007, now seen corresponding path program 2 times [2019-12-18 15:15:07,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:15:07,629 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50804660] [2019-12-18 15:15:07,629 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:15:07,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:15:07,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 15:15:07,673 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50804660] [2019-12-18 15:15:07,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:15:07,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 15:15:07,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416022988] [2019-12-18 15:15:07,674 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 15:15:07,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:15:07,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 15:15:07,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 15:15:07,675 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 4 states. [2019-12-18 15:15:07,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:15:07,689 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2019-12-18 15:15:07,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 15:15:07,689 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-18 15:15:07,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:15:07,690 INFO L225 Difference]: With dead ends: 13 [2019-12-18 15:15:07,690 INFO L226 Difference]: Without dead ends: 0 [2019-12-18 15:15:07,690 INFO L631 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 [2019-12-18 15:15:07,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-18 15:15:07,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-18 15:15:07,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-18 15:15:07,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-18 15:15:07,691 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-18 15:15:07,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:15:07,691 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-18 15:15:07,691 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 15:15:07,692 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-18 15:15:07,692 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-18 15:15:07,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 03:15:07 BasicIcfg [2019-12-18 15:15:07,696 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-18 15:15:07,698 INFO L168 Benchmark]: Toolchain (without parser) took 4246.21 ms. Allocated memory was 144.2 MB in the beginning and 251.1 MB in the end (delta: 107.0 MB). Free memory was 99.1 MB in the beginning and 120.5 MB in the end (delta: -21.4 MB). Peak memory consumption was 85.6 MB. Max. memory is 7.1 GB. [2019-12-18 15:15:07,699 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 144.2 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-12-18 15:15:07,700 INFO L168 Benchmark]: CACSL2BoogieTranslator took 779.66 ms. Allocated memory was 144.2 MB in the beginning and 200.8 MB in the end (delta: 56.6 MB). Free memory was 98.7 MB in the beginning and 157.0 MB in the end (delta: -58.3 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2019-12-18 15:15:07,701 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.67 ms. Allocated memory is still 200.8 MB. Free memory was 156.4 MB in the beginning and 154.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-12-18 15:15:07,702 INFO L168 Benchmark]: Boogie Preprocessor took 25.27 ms. Allocated memory is still 200.8 MB. Free memory was 154.4 MB in the beginning and 153.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-12-18 15:15:07,703 INFO L168 Benchmark]: RCFGBuilder took 454.69 ms. Allocated memory is still 200.8 MB. Free memory was 153.0 MB in the beginning and 132.2 MB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2019-12-18 15:15:07,704 INFO L168 Benchmark]: TraceAbstraction took 2930.44 ms. Allocated memory was 200.8 MB in the beginning and 251.1 MB in the end (delta: 50.3 MB). Free memory was 132.2 MB in the beginning and 120.5 MB in the end (delta: 11.8 MB). Peak memory consumption was 62.1 MB. Max. memory is 7.1 GB. [2019-12-18 15:15:07,708 INFO L335 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 144.2 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 779.66 ms. Allocated memory was 144.2 MB in the beginning and 200.8 MB in the end (delta: 56.6 MB). Free memory was 98.7 MB in the beginning and 157.0 MB in the end (delta: -58.3 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.67 ms. Allocated memory is still 200.8 MB. Free memory was 156.4 MB in the beginning and 154.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.27 ms. Allocated memory is still 200.8 MB. Free memory was 154.4 MB in the beginning and 153.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 454.69 ms. Allocated memory is still 200.8 MB. Free memory was 153.0 MB in the beginning and 132.2 MB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2930.44 ms. Allocated memory was 200.8 MB in the beginning and 251.1 MB in the end (delta: 50.3 MB). Free memory was 132.2 MB in the beginning and 120.5 MB in the end (delta: 11.8 MB). Peak memory consumption was 62.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 64 ProgramPointsBefore, 22 ProgramPointsAfterwards, 55 TransitionsBefore, 17 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 236 VarBasedMoverChecksPositive, 9 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 10 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 425 CheckedPairsTotal, 45 TotalNumberOfCompositions - PositiveResult [Line: 4]: 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, 55 locations, 1 error locations. Result: SAFE, OverallTime: 2.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 63 SDtfs, 68 SDslu, 79 SDs, 0 SdLazy, 57 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred 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: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 53 ConstructedInterpolants, 0 QuantifiedInterpolants, 1341 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...