/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/atomic/14b-subsequent-blocks.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 02:31:06,967 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 02:31:06,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 02:31:07,000 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-13 02:31:07,017 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-13 02:31:07,019 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-13 02:31:07,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-13 02:31:07,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-13 02:31:07,024 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-13 02:31:07,025 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-13 02:31:07,027 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-13 02:31:07,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-13 02:31:07,035 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-13 02:31:07,036 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-13 02:31:07,036 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-13 02:31:07,038 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-13 02:31:07,043 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-13 02:31:07,049 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-13 02:31:07,050 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-13 02:31:07,050 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-13 02:31:07,053 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-PN-NoLbe-OGIterative.epf [2021-08-13 02:31:07,103 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 02:31:07,103 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 02:31:07,105 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 02:31:07,105 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 02:31:07,105 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 02:31:07,106 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 02:31:07,106 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 02:31:07,106 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 02:31:07,106 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 02:31:07,106 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 02:31:07,107 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 02:31:07,107 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 02:31:07,107 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 02:31:07,107 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 02:31:07,107 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 02:31:07,108 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 02:31:07,108 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 02:31:07,108 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 02:31:07,108 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 02:31:07,108 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 02:31:07,108 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 02:31:07,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 02:31:07,109 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 02:31:07,109 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 02:31:07,109 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 02:31:07,109 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 02:31:07,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 02:31:07,109 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 02:31:07,109 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 02:31:07,109 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 02:31:07,110 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 02:31:07,110 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 02:31:07,357 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 02:31:07,371 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 02:31:07,373 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 02:31:07,373 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-13 02:31:07,376 INFO L275 PluginConnector]: CDTParser initialized [2021-08-13 02:31:07,376 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/atomic/14b-subsequent-blocks.c [2021-08-13 02:31:07,426 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48d4ea388/b046fabfd0ab436c8eac9e0db43c8682/FLAG77ef3c9e8 [2021-08-13 02:31:07,725 INFO L306 CDTParser]: Found 1 translation units. [2021-08-13 02:31:07,726 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/atomic/14b-subsequent-blocks.c [2021-08-13 02:31:07,726 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-08-13 02:31:07,751 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48d4ea388/b046fabfd0ab436c8eac9e0db43c8682/FLAG77ef3c9e8 [2021-08-13 02:31:08,164 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48d4ea388/b046fabfd0ab436c8eac9e0db43c8682 [2021-08-13 02:31:08,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 02:31:08,167 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-13 02:31:08,169 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-13 02:31:08,169 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-13 02:31:08,171 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-13 02:31:08,172 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 02:31:08" (1/1) ... [2021-08-13 02:31:08,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@257dc434 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 02:31:08, skipping insertion in model container [2021-08-13 02:31:08,173 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 02:31:08" (1/1) ... [2021-08-13 02:31:08,177 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-13 02:31:08,186 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-13 02:31:08,293 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 02:31:08,298 INFO L203 MainTranslator]: Completed pre-run [2021-08-13 02:31:08,305 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 02:31:08,313 INFO L208 MainTranslator]: Completed translation [2021-08-13 02:31:08,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 02:31:08 WrapperNode [2021-08-13 02:31:08,314 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-13 02:31:08,315 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 02:31:08,315 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 02:31:08,315 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 02:31:08,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 02:31:08" (1/1) ... [2021-08-13 02:31:08,323 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 02:31:08" (1/1) ... [2021-08-13 02:31:08,358 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 02:31:08,359 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 02:31:08,359 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 02:31:08,359 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 02:31:08,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 02:31:08" (1/1) ... [2021-08-13 02:31:08,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 02:31:08" (1/1) ... [2021-08-13 02:31:08,373 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 02:31:08" (1/1) ... [2021-08-13 02:31:08,373 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 02:31:08" (1/1) ... [2021-08-13 02:31:08,377 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 02:31:08" (1/1) ... [2021-08-13 02:31:08,378 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 02:31:08" (1/1) ... [2021-08-13 02:31:08,379 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 02:31:08" (1/1) ... [2021-08-13 02:31:08,383 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 02:31:08,385 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 02:31:08,385 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 02:31:08,385 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 02:31:08,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 02:31:08" (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 [2021-08-13 02:31:08,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-13 02:31:08,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-13 02:31:08,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-13 02:31:08,425 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-08-13 02:31:08,425 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-08-13 02:31:08,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 02:31:08,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 02:31:08,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-13 02:31:08,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-13 02:31:08,426 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-13 02:31:08,607 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 02:31:08,607 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-08-13 02:31:08,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 02:31:08 BoogieIcfgContainer [2021-08-13 02:31:08,608 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 02:31:08,609 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 02:31:08,609 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 02:31:08,611 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 02:31:08,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.08 02:31:08" (1/3) ... [2021-08-13 02:31:08,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a195f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 02:31:08, skipping insertion in model container [2021-08-13 02:31:08,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 02:31:08" (2/3) ... [2021-08-13 02:31:08,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a195f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 02:31:08, skipping insertion in model container [2021-08-13 02:31:08,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 02:31:08" (3/3) ... [2021-08-13 02:31:08,613 INFO L111 eAbstractionObserver]: Analyzing ICFG 14b-subsequent-blocks.c [2021-08-13 02:31:08,617 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 02:31:08,617 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 02:31:08,617 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 02:31:08,643 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 02:31:08,643 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 02:31:08,643 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 02:31:08,644 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 02:31:08,644 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 02:31:08,644 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 02:31:08,644 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 02:31:08,644 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 02:31:08,644 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 02:31:08,644 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 02:31:08,645 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 02:31:08,645 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 02:31:08,646 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 02:31:08,646 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 02:31:08,646 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 02:31:08,646 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 02:31:08,648 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-13 02:31:08,662 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-13 02:31:08,676 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 02:31:08,676 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 02:31:08,676 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 02:31:08,676 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 02:31:08,676 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 02:31:08,676 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 02:31:08,676 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 02:31:08,677 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 02:31:08,683 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 30 places, 26 transitions, 57 flow [2021-08-13 02:31:08,698 INFO L129 PetriNetUnfolder]: 0/25 cut-off events. [2021-08-13 02:31:08,698 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 02:31:08,700 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 25 events. 0/25 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-08-13 02:31:08,700 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 26 transitions, 57 flow [2021-08-13 02:31:08,702 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 20 transitions, 43 flow [2021-08-13 02:31:08,714 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-08-13 02:31:08,715 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 02:31:08,715 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:31:08,715 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 02:31:08,716 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 02:31:08,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:31:08,719 INFO L82 PathProgramCache]: Analyzing trace with hash 713342842, now seen corresponding path program 1 times [2021-08-13 02:31:08,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:31:08,725 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972437731] [2021-08-13 02:31:08,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:31:08,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:31:08,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:31:08,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:31:08,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:31:08,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 02:31:08,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:31:08,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 02:31:08,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:31:08,823 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:31:08,823 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972437731] [2021-08-13 02:31:08,823 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972437731] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:31:08,823 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:31:08,824 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 02:31:08,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597974512] [2021-08-13 02:31:08,829 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-13 02:31:08,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:31:08,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-13 02:31:08,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-13 02:31:08,840 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 26 [2021-08-13 02:31:08,842 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 43 flow. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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) [2021-08-13 02:31:08,842 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:31:08,842 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 26 [2021-08-13 02:31:08,843 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:31:08,867 INFO L129 PetriNetUnfolder]: 1/29 cut-off events. [2021-08-13 02:31:08,867 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 02:31:08,868 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 29 events. 1/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 30 event pairs, 0 based on Foata normal form. 2/31 useless extension candidates. Maximal degree in co-relation 27. Up to 6 conditions per place. [2021-08-13 02:31:08,869 INFO L132 encePairwiseOnDemand]: 22/26 looper letters, 2 selfloop transitions, 5 changer transitions 1/23 dead transitions. [2021-08-13 02:31:08,869 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 23 transitions, 65 flow [2021-08-13 02:31:08,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-13 02:31:08,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-08-13 02:31:08,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2021-08-13 02:31:08,877 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8557692307692307 [2021-08-13 02:31:08,877 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 89 transitions. [2021-08-13 02:31:08,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 89 transitions. [2021-08-13 02:31:08,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:31:08,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 89 transitions. [2021-08-13 02:31:08,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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) [2021-08-13 02:31:08,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 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) [2021-08-13 02:31:08,883 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 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) [2021-08-13 02:31:08,884 INFO L348 CegarLoopForPetriNet]: 24 programPoint places, 3 predicate places. [2021-08-13 02:31:08,884 INFO L482 AbstractCegarLoop]: Abstraction has has 27 places, 23 transitions, 65 flow [2021-08-13 02:31:08,884 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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) [2021-08-13 02:31:08,884 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:31:08,884 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 02:31:08,884 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 02:31:08,885 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 02:31:08,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:31:08,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1555094599, now seen corresponding path program 1 times [2021-08-13 02:31:08,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:31:08,886 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457654722] [2021-08-13 02:31:08,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:31:08,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:31:08,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:31:08,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:31:08,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:31:08,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 02:31:08,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:31:08,929 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:31:08,930 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457654722] [2021-08-13 02:31:08,930 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457654722] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:31:08,930 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:31:08,930 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-13 02:31:08,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479317192] [2021-08-13 02:31:08,931 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 02:31:08,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:31:08,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 02:31:08,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 02:31:08,932 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 26 [2021-08-13 02:31:08,933 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 23 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2021-08-13 02:31:08,933 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:31:08,934 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 26 [2021-08-13 02:31:08,936 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:31:08,958 INFO L129 PetriNetUnfolder]: 0/29 cut-off events. [2021-08-13 02:31:08,958 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-08-13 02:31:08,958 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 29 events. 0/29 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 35 event pairs, 0 based on Foata normal form. 1/30 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2021-08-13 02:31:08,958 INFO L132 encePairwiseOnDemand]: 22/26 looper letters, 3 selfloop transitions, 2 changer transitions 4/24 dead transitions. [2021-08-13 02:31:08,958 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 24 transitions, 87 flow [2021-08-13 02:31:08,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 02:31:08,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 02:31:08,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 68 transitions. [2021-08-13 02:31:08,961 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8717948717948718 [2021-08-13 02:31:08,961 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 68 transitions. [2021-08-13 02:31:08,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 68 transitions. [2021-08-13 02:31:08,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:31:08,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 68 transitions. [2021-08-13 02:31:08,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2021-08-13 02:31:08,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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) [2021-08-13 02:31:08,962 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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) [2021-08-13 02:31:08,963 INFO L348 CegarLoopForPetriNet]: 24 programPoint places, 5 predicate places. [2021-08-13 02:31:08,963 INFO L482 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 87 flow [2021-08-13 02:31:08,963 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2021-08-13 02:31:08,963 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:31:08,963 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 02:31:08,963 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 02:31:08,964 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 02:31:08,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:31:08,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1555118779, now seen corresponding path program 2 times [2021-08-13 02:31:08,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:31:08,964 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803641751] [2021-08-13 02:31:08,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:31:08,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-13 02:31:08,978 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-13 02:31:08,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-13 02:31:08,984 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-13 02:31:08,995 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-13 02:31:08,995 INFO L651 BasicCegarLoop]: Counterexample might be feasible [2021-08-13 02:31:08,996 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 02:31:08,998 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-13 02:31:09,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.08 02:31:09 BasicIcfg [2021-08-13 02:31:09,011 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-13 02:31:09,012 INFO L168 Benchmark]: Toolchain (without parser) took 844.98 ms. Allocated memory is still 226.5 MB. Free memory was 190.9 MB in the beginning and 159.2 MB in the end (delta: 31.7 MB). Peak memory consumption was 32.5 MB. Max. memory is 8.0 GB. [2021-08-13 02:31:09,013 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 226.5 MB. Free memory is still 209.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-13 02:31:09,013 INFO L168 Benchmark]: CACSL2BoogieTranslator took 145.35 ms. Allocated memory is still 226.5 MB. Free memory was 190.7 MB in the beginning and 182.1 MB in the end (delta: 8.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-08-13 02:31:09,014 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.58 ms. Allocated memory is still 226.5 MB. Free memory was 182.1 MB in the beginning and 210.5 MB in the end (delta: -28.5 MB). Peak memory consumption was 5.3 MB. Max. memory is 8.0 GB. [2021-08-13 02:31:09,014 INFO L168 Benchmark]: Boogie Preprocessor took 24.23 ms. Allocated memory is still 226.5 MB. Free memory was 210.5 MB in the beginning and 209.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-13 02:31:09,014 INFO L168 Benchmark]: RCFGBuilder took 223.39 ms. Allocated memory is still 226.5 MB. Free memory was 209.5 MB in the beginning and 195.3 MB in the end (delta: 14.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-08-13 02:31:09,015 INFO L168 Benchmark]: TraceAbstraction took 402.17 ms. Allocated memory is still 226.5 MB. Free memory was 194.8 MB in the beginning and 159.2 MB in the end (delta: 35.7 MB). Peak memory consumption was 35.7 MB. Max. memory is 8.0 GB. [2021-08-13 02:31:09,016 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 226.5 MB. Free memory is still 209.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 145.35 ms. Allocated memory is still 226.5 MB. Free memory was 190.7 MB in the beginning and 182.1 MB in the end (delta: 8.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 43.58 ms. Allocated memory is still 226.5 MB. Free memory was 182.1 MB in the beginning and 210.5 MB in the end (delta: -28.5 MB). Peak memory consumption was 5.3 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 24.23 ms. Allocated memory is still 226.5 MB. Free memory was 210.5 MB in the beginning and 209.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 223.39 ms. Allocated memory is still 226.5 MB. Free memory was 209.5 MB in the beginning and 195.3 MB in the end (delta: 14.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 402.17 ms. Allocated memory is still 226.5 MB. Free memory was 194.8 MB in the beginning and 159.2 MB in the end (delta: 35.7 MB). Peak memory consumption was 35.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 35]: assertion can be violated assertion can be violated We found a FailurePath: [L15] 0 int x = -1; VAL [x=-1] [L23] 0 pthread_t threadId; VAL [x=-1] [L24] FCALL, FORK 0 pthread_create(&threadId, NULL, &foo, NULL) VAL [arg={0:0}, x=-1] [L27] 0 x = 1 [L28] 0 x = x + 1 VAL [arg={0:0}, arg={0:0}, x=2] [L18] 1 x = 0 VAL [arg={0:0}, arg={0:0}, x=0] [L31] 0 x = x + 1 [L32] 0 x = x + 1 VAL [arg={0:0}, arg={0:0}, x=2] [L35] 0 CodeAnnotStmt[Assertion] VAL [arg={0:0}, arg={0:0}, x=2] - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 33 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 12.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 323.2ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 78.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 25.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 12 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 15 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=87occurred in iteration=2, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 5.7ms SsaConstructionTime, 28.8ms SatisfiabilityAnalysisTime, 75.3ms InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 38 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 incorrect! Received shutdown request...