/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/safe022_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-11 15:33:43,311 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 15:33:43,316 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 15:33:43,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 15:33:43,360 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 15:33:43,368 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 15:33:43,371 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 15:33:43,376 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 15:33:43,379 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 15:33:43,382 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 15:33:43,383 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 15:33:43,385 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 15:33:43,385 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 15:33:43,388 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 15:33:43,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 15:33:43,393 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 15:33:43,395 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 15:33:43,396 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 15:33:43,398 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 15:33:43,406 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 15:33:43,409 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 15:33:43,410 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 15:33:43,411 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 15:33:43,412 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 15:33:43,423 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-11 15:33:43,432 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 15:33:43,433 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 15:33:43,434 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 15:33:43,435 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 15:33:43,436 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 15:33:43,437 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 15:33:43,438 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 15:33:43,438 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 15:33:43,439 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 15:33:43,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 15:33:43,441 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 15:33:43,442 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 [2020-09-11 15:33:43,472 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 15:33:43,472 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 15:33:43,474 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 15:33:43,474 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 15:33:43,474 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 15:33:43,474 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 15:33:43,475 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 15:33:43,475 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 15:33:43,475 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 15:33:43,475 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 15:33:43,475 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 15:33:43,476 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 15:33:43,476 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 15:33:43,476 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 15:33:43,476 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 15:33:43,476 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 15:33:43,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 15:33:43,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 15:33:43,477 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 15:33:43,477 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 15:33:43,478 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 15:33:43,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 15:33:43,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 15:33:43,478 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-11 15:33:43,479 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 15:33:43,479 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 15:33:43,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 15:33:43,479 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 15:33:43,479 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-11 15:33:43,480 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-11 15:33:43,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 15:33:43,966 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 15:33:43,970 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 15:33:43,972 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 15:33:43,973 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 15:33:43,974 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe022_tso.oepc.i [2020-09-11 15:33:44,050 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b42a571fd/723a257cf43b4f94be84a37f2de8b567/FLAGca25c7ff6 [2020-09-11 15:33:44,696 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 15:33:44,697 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe022_tso.oepc.i [2020-09-11 15:33:44,714 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b42a571fd/723a257cf43b4f94be84a37f2de8b567/FLAGca25c7ff6 [2020-09-11 15:33:44,905 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b42a571fd/723a257cf43b4f94be84a37f2de8b567 [2020-09-11 15:33:44,919 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 15:33:44,923 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 15:33:44,925 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 15:33:44,925 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 15:33:44,929 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 15:33:44,930 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 03:33:44" (1/1) ... [2020-09-11 15:33:44,935 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42178c85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:33:44, skipping insertion in model container [2020-09-11 15:33:44,935 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 03:33:44" (1/1) ... [2020-09-11 15:33:44,944 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 15:33:45,002 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 15:33:45,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 15:33:45,540 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 15:33:45,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 15:33:45,674 INFO L208 MainTranslator]: Completed translation [2020-09-11 15:33:45,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:33:45 WrapperNode [2020-09-11 15:33:45,675 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 15:33:45,676 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 15:33:45,676 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 15:33:45,676 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 15:33:45,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:33:45" (1/1) ... [2020-09-11 15:33:45,716 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:33:45" (1/1) ... [2020-09-11 15:33:45,741 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 15:33:45,741 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 15:33:45,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 15:33:45,742 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 15:33:45,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:33:45" (1/1) ... [2020-09-11 15:33:45,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:33:45" (1/1) ... [2020-09-11 15:33:45,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:33:45" (1/1) ... [2020-09-11 15:33:45,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:33:45" (1/1) ... [2020-09-11 15:33:45,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:33:45" (1/1) ... [2020-09-11 15:33:45,771 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:33:45" (1/1) ... [2020-09-11 15:33:45,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:33:45" (1/1) ... [2020-09-11 15:33:45,777 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 15:33:45,778 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 15:33:45,778 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 15:33:45,778 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 15:33:45,779 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:33:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 15:33:45,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 15:33:45,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-11 15:33:45,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 15:33:45,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 15:33:45,862 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-11 15:33:45,862 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-11 15:33:45,862 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-11 15:33:45,862 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-11 15:33:45,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-11 15:33:45,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 15:33:45,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 15:33:45,865 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-11 15:33:46,233 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 15:33:46,234 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-11 15:33:46,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 03:33:46 BoogieIcfgContainer [2020-09-11 15:33:46,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 15:33:46,241 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 15:33:46,241 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 15:33:46,245 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 15:33:46,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 03:33:44" (1/3) ... [2020-09-11 15:33:46,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e49ca1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 03:33:46, skipping insertion in model container [2020-09-11 15:33:46,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:33:45" (2/3) ... [2020-09-11 15:33:46,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e49ca1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 03:33:46, skipping insertion in model container [2020-09-11 15:33:46,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 03:33:46" (3/3) ... [2020-09-11 15:33:46,249 INFO L109 eAbstractionObserver]: Analyzing ICFG safe022_tso.oepc.i [2020-09-11 15:33:46,262 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 15:33:46,262 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-11 15:33:46,271 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-11 15:33:46,272 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 15:33:46,300 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:33:46,300 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:33:46,300 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:33:46,300 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:33:46,301 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:33:46,301 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:33:46,302 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:33:46,302 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:33:46,302 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:33:46,302 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:33:46,303 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:33:46,303 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:33:46,308 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:33:46,308 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:33:46,308 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:33:46,309 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:33:46,315 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:33:46,315 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:33:46,315 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:33:46,315 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:33:46,337 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-09-11 15:33:46,361 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 15:33:46,362 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 15:33:46,362 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-11 15:33:46,362 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 15:33:46,362 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 15:33:46,362 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 15:33:46,363 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 15:33:46,363 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 15:33:46,381 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 56 transitions, 122 flow [2020-09-11 15:33:46,383 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 56 transitions, 122 flow [2020-09-11 15:33:46,430 INFO L129 PetriNetUnfolder]: 2/54 cut-off events. [2020-09-11 15:33:46,430 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 15:33:46,441 INFO L80 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 54 events. 2/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-09-11 15:33:46,444 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 56 transitions, 122 flow [2020-09-11 15:33:46,463 INFO L129 PetriNetUnfolder]: 2/54 cut-off events. [2020-09-11 15:33:46,463 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 15:33:46,464 INFO L80 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 54 events. 2/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-09-11 15:33:46,466 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 672 [2020-09-11 15:33:46,467 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-11 15:33:47,939 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1165 [2020-09-11 15:33:47,939 INFO L214 etLargeBlockEncoding]: Total number of compositions: 48 [2020-09-11 15:33:47,944 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2020-09-11 15:33:47,959 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-09-11 15:33:47,962 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-09-11 15:33:47,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-09-11 15:33:47,971 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:33:47,972 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-09-11 15:33:47,973 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:33:47,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:33:47,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1988358065, now seen corresponding path program 1 times [2020-09-11 15:33:47,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:33:47,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038322780] [2020-09-11 15:33:47,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:33:48,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:33:48,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:33:48,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038322780] [2020-09-11 15:33:48,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:33:48,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 15:33:48,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62101248] [2020-09-11 15:33:48,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 15:33:48,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:33:48,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 15:33:48,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:33:48,274 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2020-09-11 15:33:48,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:33:48,312 INFO L93 Difference]: Finished difference Result 70 states and 149 transitions. [2020-09-11 15:33:48,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 15:33:48,315 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-09-11 15:33:48,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:33:48,331 INFO L225 Difference]: With dead ends: 70 [2020-09-11 15:33:48,331 INFO L226 Difference]: Without dead ends: 54 [2020-09-11 15:33:48,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:33:48,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-11 15:33:48,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-11 15:33:48,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-11 15:33:48,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 109 transitions. [2020-09-11 15:33:48,385 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 109 transitions. Word has length 6 [2020-09-11 15:33:48,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:33:48,385 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 109 transitions. [2020-09-11 15:33:48,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 15:33:48,386 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 109 transitions. [2020-09-11 15:33:48,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-09-11 15:33:48,386 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:33:48,387 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:33:48,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 15:33:48,387 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:33:48,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:33:48,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1509525162, now seen corresponding path program 1 times [2020-09-11 15:33:48,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:33:48,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019253421] [2020-09-11 15:33:48,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:33:48,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:33:48,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:33:48,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019253421] [2020-09-11 15:33:48,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:33:48,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:33:48,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363205238] [2020-09-11 15:33:48,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:33:48,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:33:48,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:33:48,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:33:48,506 INFO L87 Difference]: Start difference. First operand 54 states and 109 transitions. Second operand 4 states. [2020-09-11 15:33:48,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:33:48,532 INFO L93 Difference]: Finished difference Result 60 states and 113 transitions. [2020-09-11 15:33:48,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 15:33:48,533 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-09-11 15:33:48,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:33:48,534 INFO L225 Difference]: With dead ends: 60 [2020-09-11 15:33:48,534 INFO L226 Difference]: Without dead ends: 36 [2020-09-11 15:33:48,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:33:48,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-11 15:33:48,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-09-11 15:33:48,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-11 15:33:48,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 63 transitions. [2020-09-11 15:33:48,542 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 63 transitions. Word has length 7 [2020-09-11 15:33:48,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:33:48,542 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 63 transitions. [2020-09-11 15:33:48,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:33:48,542 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 63 transitions. [2020-09-11 15:33:48,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 15:33:48,543 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:33:48,543 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:33:48,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 15:33:48,544 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:33:48,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:33:48,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1014872071, now seen corresponding path program 1 times [2020-09-11 15:33:48,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:33:48,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272197942] [2020-09-11 15:33:48,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:33:48,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:33:48,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:33:48,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272197942] [2020-09-11 15:33:48,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:33:48,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:33:48,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064243175] [2020-09-11 15:33:48,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:33:48,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:33:48,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:33:48,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:33:48,655 INFO L87 Difference]: Start difference. First operand 36 states and 63 transitions. Second operand 4 states. [2020-09-11 15:33:48,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:33:48,687 INFO L93 Difference]: Finished difference Result 39 states and 61 transitions. [2020-09-11 15:33:48,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 15:33:48,687 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-11 15:33:48,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:33:48,688 INFO L225 Difference]: With dead ends: 39 [2020-09-11 15:33:48,688 INFO L226 Difference]: Without dead ends: 29 [2020-09-11 15:33:48,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:33:48,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-09-11 15:33:48,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-09-11 15:33:48,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-09-11 15:33:48,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 44 transitions. [2020-09-11 15:33:48,694 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 44 transitions. Word has length 9 [2020-09-11 15:33:48,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:33:48,694 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 44 transitions. [2020-09-11 15:33:48,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:33:48,695 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 44 transitions. [2020-09-11 15:33:48,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-11 15:33:48,695 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:33:48,695 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:33:48,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 15:33:48,696 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:33:48,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:33:48,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1964607327, now seen corresponding path program 1 times [2020-09-11 15:33:48,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:33:48,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770075338] [2020-09-11 15:33:48,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:33:48,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:33:48,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:33:48,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770075338] [2020-09-11 15:33:48,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:33:48,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:33:48,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285753048] [2020-09-11 15:33:48,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:33:48,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:33:48,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:33:48,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:33:48,801 INFO L87 Difference]: Start difference. First operand 29 states and 44 transitions. Second operand 5 states. [2020-09-11 15:33:48,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:33:48,837 INFO L93 Difference]: Finished difference Result 27 states and 38 transitions. [2020-09-11 15:33:48,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 15:33:48,838 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-09-11 15:33:48,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:33:48,838 INFO L225 Difference]: With dead ends: 27 [2020-09-11 15:33:48,839 INFO L226 Difference]: Without dead ends: 22 [2020-09-11 15:33:48,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-11 15:33:48,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-09-11 15:33:48,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-09-11 15:33:48,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-09-11 15:33:48,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2020-09-11 15:33:48,843 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 10 [2020-09-11 15:33:48,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:33:48,843 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2020-09-11 15:33:48,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:33:48,843 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2020-09-11 15:33:48,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-11 15:33:48,844 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:33:48,844 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:33:48,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 15:33:48,845 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:33:48,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:33:48,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1799382783, now seen corresponding path program 1 times [2020-09-11 15:33:48,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:33:48,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005199772] [2020-09-11 15:33:48,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:33:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:33:48,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:33:48,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005199772] [2020-09-11 15:33:48,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:33:48,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:33:48,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610729403] [2020-09-11 15:33:48,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:33:48,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:33:48,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:33:48,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:33:48,903 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand 4 states. [2020-09-11 15:33:48,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:33:48,921 INFO L93 Difference]: Finished difference Result 21 states and 29 transitions. [2020-09-11 15:33:48,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 15:33:48,922 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-11 15:33:48,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:33:48,922 INFO L225 Difference]: With dead ends: 21 [2020-09-11 15:33:48,922 INFO L226 Difference]: Without dead ends: 0 [2020-09-11 15:33:48,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:33:48,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-11 15:33:48,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-11 15:33:48,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-11 15:33:48,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-11 15:33:48,924 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-09-11 15:33:48,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:33:48,924 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-11 15:33:48,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:33:48,924 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-11 15:33:48,925 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-11 15:33:48,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-11 15:33:48,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 03:33:48 BasicIcfg [2020-09-11 15:33:48,930 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 15:33:48,934 INFO L168 Benchmark]: Toolchain (without parser) took 4012.16 ms. Allocated memory was 139.5 MB in the beginning and 246.9 MB in the end (delta: 107.5 MB). Free memory was 101.2 MB in the beginning and 144.4 MB in the end (delta: -43.2 MB). Peak memory consumption was 64.3 MB. Max. memory is 7.1 GB. [2020-09-11 15:33:48,934 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-11 15:33:48,935 INFO L168 Benchmark]: CACSL2BoogieTranslator took 750.58 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 100.5 MB in the beginning and 161.8 MB in the end (delta: -61.3 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2020-09-11 15:33:48,936 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.43 ms. Allocated memory is still 203.4 MB. Free memory was 161.1 MB in the beginning and 159.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-11 15:33:48,937 INFO L168 Benchmark]: Boogie Preprocessor took 35.94 ms. Allocated memory is still 203.4 MB. Free memory was 159.1 MB in the beginning and 157.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-11 15:33:48,938 INFO L168 Benchmark]: RCFGBuilder took 461.88 ms. Allocated memory is still 203.4 MB. Free memory was 157.8 MB in the beginning and 137.9 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-09-11 15:33:48,939 INFO L168 Benchmark]: TraceAbstraction took 2689.22 ms. Allocated memory was 203.4 MB in the beginning and 246.9 MB in the end (delta: 43.5 MB). Free memory was 137.2 MB in the beginning and 144.4 MB in the end (delta: -7.2 MB). Peak memory consumption was 36.3 MB. Max. memory is 7.1 GB. [2020-09-11 15:33:48,943 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 750.58 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 100.5 MB in the beginning and 161.8 MB in the end (delta: -61.3 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 65.43 ms. Allocated memory is still 203.4 MB. Free memory was 161.1 MB in the beginning and 159.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 35.94 ms. Allocated memory is still 203.4 MB. Free memory was 159.1 MB in the beginning and 157.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 461.88 ms. Allocated memory is still 203.4 MB. Free memory was 157.8 MB in the beginning and 137.9 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2689.22 ms. Allocated memory was 203.4 MB in the beginning and 246.9 MB in the end (delta: 43.5 MB). Free memory was 137.2 MB in the beginning and 144.4 MB in the end (delta: -7.2 MB). Peak memory consumption was 36.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 61 ProgramPointsBefore, 22 ProgramPointsAfterwards, 56 TransitionsBefore, 15 TransitionsAfterwards, 672 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 356 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 26 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 1165 CheckedPairsTotal, 48 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.5s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 60 SDtfs, 48 SDslu, 60 SDs, 0 SdLazy, 45 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 1057 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...