/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-keepdead.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe022_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-aa1e80b [2020-12-17 23:55:38,366 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-17 23:55:38,370 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-17 23:55:38,424 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-17 23:55:38,425 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-17 23:55:38,426 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-17 23:55:38,428 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-17 23:55:38,431 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-17 23:55:38,433 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-17 23:55:38,434 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-17 23:55:38,435 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-17 23:55:38,437 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-17 23:55:38,437 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-17 23:55:38,439 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-17 23:55:38,440 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-17 23:55:38,442 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-17 23:55:38,443 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-17 23:55:38,444 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-17 23:55:38,446 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-17 23:55:38,449 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-17 23:55:38,451 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-17 23:55:38,462 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-17 23:55:38,464 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-17 23:55:38,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-17 23:55:38,470 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-17 23:55:38,480 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-17 23:55:38,482 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-17 23:55:38,483 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-17 23:55:38,484 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-17 23:55:38,486 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-17 23:55:38,487 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-17 23:55:38,488 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-17 23:55:38,489 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-17 23:55:38,489 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-17 23:55:38,490 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-17 23:55:38,491 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-17 23:55:38,492 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-keepdead.epf [2020-12-17 23:55:38,547 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-17 23:55:38,548 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-17 23:55:38,553 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-17 23:55:38,554 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-17 23:55:38,554 INFO L138 SettingsManager]: * Use SBE=true [2020-12-17 23:55:38,554 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-17 23:55:38,554 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-17 23:55:38,555 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-17 23:55:38,555 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-17 23:55:38,556 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-17 23:55:38,557 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-17 23:55:38,557 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-17 23:55:38,558 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-17 23:55:38,558 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-17 23:55:38,558 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-17 23:55:38,558 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-17 23:55:38,559 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-17 23:55:38,559 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-17 23:55:38,559 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-17 23:55:38,559 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-17 23:55:38,559 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-17 23:55:38,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-17 23:55:38,560 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-17 23:55:38,561 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-17 23:55:38,561 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-17 23:55:38,561 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-17 23:55:38,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-17 23:55:38,562 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-12-17 23:55:38,562 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-17 23:55:38,562 INFO L138 SettingsManager]: * Remove dead ends from automaton=false [2020-12-17 23:55:38,562 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2020-12-17 23:55:38,562 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-17 23:55:38,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-17 23:55:39,038 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-17 23:55:39,042 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-17 23:55:39,043 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-17 23:55:39,045 INFO L275 PluginConnector]: CDTParser initialized [2020-12-17 23:55:39,046 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe022_tso.oepc.i [2020-12-17 23:55:39,135 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7862a4b1c/03af16ee83f34eb9aa83e93a4872d9b0/FLAGdb1475879 [2020-12-17 23:55:39,913 INFO L306 CDTParser]: Found 1 translation units. [2020-12-17 23:55:39,914 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe022_tso.oepc.i [2020-12-17 23:55:39,939 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7862a4b1c/03af16ee83f34eb9aa83e93a4872d9b0/FLAGdb1475879 [2020-12-17 23:55:40,214 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7862a4b1c/03af16ee83f34eb9aa83e93a4872d9b0 [2020-12-17 23:55:40,217 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-17 23:55:40,220 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-12-17 23:55:40,223 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-17 23:55:40,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-17 23:55:40,227 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-17 23:55:40,228 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 11:55:40" (1/1) ... [2020-12-17 23:55:40,233 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6702641c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:55:40, skipping insertion in model container [2020-12-17 23:55:40,233 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 11:55:40" (1/1) ... [2020-12-17 23:55:40,241 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-17 23:55:40,308 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-17 23:55:40,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-17 23:55:40,727 INFO L203 MainTranslator]: Completed pre-run [2020-12-17 23:55:40,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-17 23:55:40,899 INFO L208 MainTranslator]: Completed translation [2020-12-17 23:55:40,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:55:40 WrapperNode [2020-12-17 23:55:40,899 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-17 23:55:40,901 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-17 23:55:40,901 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-17 23:55:40,901 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-17 23:55:40,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:55:40" (1/1) ... [2020-12-17 23:55:40,927 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:55:40" (1/1) ... [2020-12-17 23:55:40,975 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-17 23:55:40,977 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-17 23:55:40,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-17 23:55:40,977 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-17 23:55:40,986 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:55:40" (1/1) ... [2020-12-17 23:55:40,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:55:40" (1/1) ... [2020-12-17 23:55:40,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:55:40" (1/1) ... [2020-12-17 23:55:40,993 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:55:40" (1/1) ... [2020-12-17 23:55:41,000 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:55:40" (1/1) ... [2020-12-17 23:55:41,002 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:55:40" (1/1) ... [2020-12-17 23:55:41,004 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:55:40" (1/1) ... [2020-12-17 23:55:41,008 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-17 23:55:41,009 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-17 23:55:41,009 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-17 23:55:41,009 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-17 23:55:41,010 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:55:40" (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 [2020-12-17 23:55:41,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-17 23:55:41,093 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-17 23:55:41,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-17 23:55:41,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-17 23:55:41,093 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-17 23:55:41,093 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-17 23:55:41,094 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-17 23:55:41,094 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-17 23:55:41,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-17 23:55:41,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-17 23:55:41,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-17 23:55:41,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-17 23:55:41,096 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-17 23:55:41,523 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-17 23:55:41,523 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-17 23:55:41,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 11:55:41 BoogieIcfgContainer [2020-12-17 23:55:41,526 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-17 23:55:41,528 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-17 23:55:41,528 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-17 23:55:41,532 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-17 23:55:41,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 11:55:40" (1/3) ... [2020-12-17 23:55:41,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7534b447 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 11:55:41, skipping insertion in model container [2020-12-17 23:55:41,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:55:40" (2/3) ... [2020-12-17 23:55:41,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7534b447 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 11:55:41, skipping insertion in model container [2020-12-17 23:55:41,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 11:55:41" (3/3) ... [2020-12-17 23:55:41,536 INFO L111 eAbstractionObserver]: Analyzing ICFG safe022_tso.oepc.i [2020-12-17 23:55:41,555 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-17 23:55:41,555 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-17 23:55:41,560 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-17 23:55:41,561 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-17 23:55:41,592 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:41,593 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:41,593 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:41,593 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:41,593 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:41,594 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:41,594 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:41,594 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:41,595 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:41,595 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:41,595 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:41,595 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:41,596 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:41,596 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:41,596 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:41,596 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:41,596 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:41,597 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:41,597 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:41,597 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:41,597 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:41,598 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:41,598 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:41,598 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:41,600 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:41,601 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:41,601 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:41,601 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:41,612 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:41,612 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:41,613 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:41,613 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:41,616 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-17 23:55:41,630 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-17 23:55:41,656 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-17 23:55:41,656 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-17 23:55:41,656 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-17 23:55:41,656 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-17 23:55:41,657 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-17 23:55:41,657 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-17 23:55:41,657 INFO L383 AbstractCegarLoop]: Minimize is NONE [2020-12-17 23:55:41,657 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-17 23:55:41,670 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 69 places, 65 transitions, 140 flow [2020-12-17 23:55:41,776 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1321 states, 1319 states have (on average 2.7498104624715696) internal successors, (3627), 1320 states have internal predecessors, (3627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 23:55:41,785 INFO L276 IsEmpty]: Start isEmpty. Operand has 1321 states, 1319 states have (on average 2.7498104624715696) internal successors, (3627), 1320 states have internal predecessors, (3627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 23:55:41,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-17 23:55:41,806 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:55:41,807 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 23:55:41,808 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:55:41,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:55:41,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1210534896, now seen corresponding path program 1 times [2020-12-17 23:55:41,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:55:41,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242008499] [2020-12-17 23:55:41,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:55:42,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:55:42,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:55:42,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242008499] [2020-12-17 23:55:42,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:55:42,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-17 23:55:42,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569443036] [2020-12-17 23:55:42,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-17 23:55:42,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:55:42,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-17 23:55:42,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-17 23:55:42,328 INFO L87 Difference]: Start difference. First operand has 1321 states, 1319 states have (on average 2.7498104624715696) internal successors, (3627), 1320 states have internal predecessors, (3627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 23:55:42,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:55:42,550 INFO L93 Difference]: Finished difference Result 1587 states and 4135 transitions. [2020-12-17 23:55:42,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-17 23:55:42,552 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2020-12-17 23:55:42,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:55:42,555 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-17 23:55:42,555 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 4135 transitions. Word has length 37 [2020-12-17 23:55:42,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:55:42,558 INFO L481 AbstractCegarLoop]: Abstraction has 1587 states and 4135 transitions. [2020-12-17 23:55:42,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 23:55:42,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 4135 transitions. [2020-12-17 23:55:42,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-17 23:55:42,565 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:55:42,565 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 23:55:42,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-17 23:55:42,566 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:55:42,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:55:42,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1963823439, now seen corresponding path program 1 times [2020-12-17 23:55:42,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:55:42,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581713058] [2020-12-17 23:55:42,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:55:42,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:55:42,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:55:42,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581713058] [2020-12-17 23:55:42,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:55:42,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-17 23:55:42,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412189177] [2020-12-17 23:55:42,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-17 23:55:42,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:55:42,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-17 23:55:42,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-17 23:55:42,839 INFO L87 Difference]: Start difference. First operand 1587 states and 4135 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 23:55:43,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:55:43,143 INFO L93 Difference]: Finished difference Result 2167 states and 5559 transitions. [2020-12-17 23:55:43,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-17 23:55:43,144 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2020-12-17 23:55:43,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:55:43,145 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2020-12-17 23:55:43,145 INFO L78 Accepts]: Start accepts. Automaton has 2167 states and 5559 transitions. Word has length 39 [2020-12-17 23:55:43,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:55:43,146 INFO L481 AbstractCegarLoop]: Abstraction has 2167 states and 5559 transitions. [2020-12-17 23:55:43,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 23:55:43,147 INFO L276 IsEmpty]: Start isEmpty. Operand 2167 states and 5559 transitions. [2020-12-17 23:55:43,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-17 23:55:43,152 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:55:43,152 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 23:55:43,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-17 23:55:43,152 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:55:43,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:55:43,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1149488442, now seen corresponding path program 1 times [2020-12-17 23:55:43,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:55:43,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992475653] [2020-12-17 23:55:43,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:55:43,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:55:43,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:55:43,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992475653] [2020-12-17 23:55:43,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:55:43,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-17 23:55:43,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5609708] [2020-12-17 23:55:43,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-17 23:55:43,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:55:43,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-17 23:55:43,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-17 23:55:43,295 INFO L87 Difference]: Start difference. First operand 2167 states and 5559 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 23:55:43,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:55:43,483 INFO L93 Difference]: Finished difference Result 1700 states and 4188 transitions. [2020-12-17 23:55:43,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-17 23:55:43,484 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2020-12-17 23:55:43,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:55:43,485 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-17 23:55:43,485 INFO L78 Accepts]: Start accepts. Automaton has 1700 states and 4188 transitions. Word has length 42 [2020-12-17 23:55:43,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:55:43,485 INFO L481 AbstractCegarLoop]: Abstraction has 1700 states and 4188 transitions. [2020-12-17 23:55:43,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 23:55:43,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1700 states and 4188 transitions. [2020-12-17 23:55:43,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-17 23:55:43,490 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:55:43,490 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 23:55:43,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-17 23:55:43,490 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:55:43,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:55:43,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1597818113, now seen corresponding path program 1 times [2020-12-17 23:55:43,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:55:43,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190646405] [2020-12-17 23:55:43,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:55:43,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:55:43,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:55:43,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190646405] [2020-12-17 23:55:43,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:55:43,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-17 23:55:43,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714581179] [2020-12-17 23:55:43,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-17 23:55:43,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:55:43,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-17 23:55:43,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-17 23:55:43,629 INFO L87 Difference]: Start difference. First operand 1700 states and 4188 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 23:55:43,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:55:43,837 INFO L93 Difference]: Finished difference Result 1145 states and 2711 transitions. [2020-12-17 23:55:43,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-17 23:55:43,838 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2020-12-17 23:55:43,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:55:43,839 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-12-17 23:55:43,839 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 2711 transitions. Word has length 43 [2020-12-17 23:55:43,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:55:43,839 INFO L481 AbstractCegarLoop]: Abstraction has 1145 states and 2711 transitions. [2020-12-17 23:55:43,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 23:55:43,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 2711 transitions. [2020-12-17 23:55:43,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-17 23:55:43,843 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:55:43,843 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 23:55:43,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-17 23:55:43,843 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:55:43,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:55:43,844 INFO L82 PathProgramCache]: Analyzing trace with hash 878840992, now seen corresponding path program 1 times [2020-12-17 23:55:43,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:55:43,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825380108] [2020-12-17 23:55:43,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:55:43,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:55:43,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:55:43,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825380108] [2020-12-17 23:55:43,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:55:43,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-17 23:55:43,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420660485] [2020-12-17 23:55:43,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-17 23:55:43,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:55:43,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-17 23:55:43,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-17 23:55:43,997 INFO L87 Difference]: Start difference. First operand 1145 states and 2711 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 23:55:44,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:55:44,129 INFO L93 Difference]: Finished difference Result 1501 states and 3540 transitions. [2020-12-17 23:55:44,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-17 23:55:44,130 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2020-12-17 23:55:44,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:55:44,130 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-12-17 23:55:44,131 INFO L78 Accepts]: Start accepts. Automaton has 1501 states and 3540 transitions. Word has length 45 [2020-12-17 23:55:44,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:55:44,131 INFO L481 AbstractCegarLoop]: Abstraction has 1501 states and 3540 transitions. [2020-12-17 23:55:44,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 23:55:44,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1501 states and 3540 transitions. [2020-12-17 23:55:44,137 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-17 23:55:44,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-17 23:55:44,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 11:55:44 BasicIcfg [2020-12-17 23:55:44,144 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-17 23:55:44,147 INFO L168 Benchmark]: Toolchain (without parser) took 3925.72 ms. Allocated memory is still 302.0 MB. Free memory was 275.7 MB in the beginning and 195.4 MB in the end (delta: 80.3 MB). Peak memory consumption was 82.8 MB. Max. memory is 16.0 GB. [2020-12-17 23:55:44,147 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 302.0 MB. Free memory was 272.9 MB in the beginning and 272.8 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2020-12-17 23:55:44,148 INFO L168 Benchmark]: CACSL2BoogieTranslator took 676.24 ms. Allocated memory is still 302.0 MB. Free memory was 275.5 MB in the beginning and 277.5 MB in the end (delta: -2.0 MB). Peak memory consumption was 29.8 MB. Max. memory is 16.0 GB. [2020-12-17 23:55:44,149 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.28 ms. Allocated memory is still 302.0 MB. Free memory was 277.5 MB in the beginning and 275.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2020-12-17 23:55:44,150 INFO L168 Benchmark]: Boogie Preprocessor took 31.46 ms. Allocated memory is still 302.0 MB. Free memory was 275.6 MB in the beginning and 273.5 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2020-12-17 23:55:44,151 INFO L168 Benchmark]: RCFGBuilder took 517.35 ms. Allocated memory is still 302.0 MB. Free memory was 273.5 MB in the beginning and 252.5 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2020-12-17 23:55:44,152 INFO L168 Benchmark]: TraceAbstraction took 2616.30 ms. Allocated memory is still 302.0 MB. Free memory was 252.5 MB in the beginning and 195.4 MB in the end (delta: 57.1 MB). Peak memory consumption was 59.2 MB. Max. memory is 16.0 GB. [2020-12-17 23:55:44,157 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 302.0 MB. Free memory was 272.9 MB in the beginning and 272.8 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 676.24 ms. Allocated memory is still 302.0 MB. Free memory was 275.5 MB in the beginning and 277.5 MB in the end (delta: -2.0 MB). Peak memory consumption was 29.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 75.28 ms. Allocated memory is still 302.0 MB. Free memory was 277.5 MB in the beginning and 275.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 31.46 ms. Allocated memory is still 302.0 MB. Free memory was 275.6 MB in the beginning and 273.5 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 517.35 ms. Allocated memory is still 302.0 MB. Free memory was 273.5 MB in the beginning and 252.5 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2616.30 ms. Allocated memory is still 302.0 MB. Free memory was 252.5 MB in the beginning and 195.4 MB in the end (delta: 57.1 MB). Peak memory consumption was 59.2 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: 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, 63 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.4s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 423 SDtfs, 715 SDslu, 1439 SDs, 0 SdLazy, 177 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2167occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 206 NumberOfCodeBlocks, 206 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 201 ConstructedInterpolants, 0 QuantifiedInterpolants, 21553 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...