/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/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-bakery-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 18:50:30,872 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 18:50:30,881 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 18:50:30,933 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-15 18:50:30,934 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-15 18:50:30,936 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-15 18:50:30,938 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-15 18:50:30,940 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-15 18:50:30,941 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-15 18:50:30,945 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-15 18:50:30,945 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-15 18:50:30,946 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-15 18:50:30,946 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-15 18:50:30,948 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-15 18:50:30,949 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-15 18:50:30,949 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-15 18:50:30,950 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-15 18:50:30,950 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-15 18:50:30,953 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-15 18:50:30,957 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-15 18:50:30,958 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-15 18:50:30,958 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-15 18:50:30,959 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-15 18:50:30,960 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-15 18:50:30,965 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-15 18:50:30,965 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-15 18:50:30,965 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-15 18:50:30,967 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-15 18:50:30,967 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-15 18:50:30,967 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-03-15 18:50:30,971 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 18:50:30,972 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 18:50:30,972 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 18:50:30,973 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2022-03-15 18:50:30,994 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 18:50:30,994 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 18:50:30,995 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 18:50:30,995 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 18:50:30,995 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 18:50:30,996 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 18:50:30,996 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 18:50:30,996 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 18:50:30,996 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 18:50:30,996 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 18:50:30,996 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 18:50:30,996 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 18:50:30,997 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 18:50:30,997 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 18:50:30,997 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 18:50:30,997 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 18:50:30,997 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 18:50:30,997 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 18:50:30,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 18:50:30,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 18:50:30,997 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 18:50:30,997 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 18:50:30,997 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 18:50:30,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 18:50:30,998 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 18:50:30,998 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-15 18:50:30,998 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 18:50:30,998 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 18:50:30,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 18:50:30,999 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2022-03-15 18:50:30,999 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2022-03-15 18:50:30,999 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 18:50:30,999 INFO L138 SettingsManager]: * Interpolant automaton=MCR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 18:50:31,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 18:50:31,193 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 18:50:31,194 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 18:50:31,195 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-15 18:50:31,195 INFO L275 PluginConnector]: CDTParser initialized [2022-03-15 18:50:31,196 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-bakery-2.wvr.c [2022-03-15 18:50:31,253 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5560541a6/3a7964cc36474116a9ece0e565b047c1/FLAG2113a083e [2022-03-15 18:50:31,630 INFO L306 CDTParser]: Found 1 translation units. [2022-03-15 18:50:31,630 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-2.wvr.c [2022-03-15 18:50:31,639 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5560541a6/3a7964cc36474116a9ece0e565b047c1/FLAG2113a083e [2022-03-15 18:50:31,651 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5560541a6/3a7964cc36474116a9ece0e565b047c1 [2022-03-15 18:50:31,654 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 18:50:31,655 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-15 18:50:31,657 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-15 18:50:31,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-15 18:50:31,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-15 18:50:31,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 06:50:31" (1/1) ... [2022-03-15 18:50:31,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51c24722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:50:31, skipping insertion in model container [2022-03-15 18:50:31,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 06:50:31" (1/1) ... [2022-03-15 18:50:31,665 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-15 18:50:31,683 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-15 18:50:31,876 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-2.wvr.c[3512,3525] [2022-03-15 18:50:31,881 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 18:50:31,887 INFO L203 MainTranslator]: Completed pre-run [2022-03-15 18:50:31,918 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-2.wvr.c[3512,3525] [2022-03-15 18:50:31,919 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 18:50:31,927 INFO L208 MainTranslator]: Completed translation [2022-03-15 18:50:31,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:50:31 WrapperNode [2022-03-15 18:50:31,927 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-15 18:50:31,928 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 18:50:31,928 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 18:50:31,928 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 18:50:31,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:50:31" (1/1) ... [2022-03-15 18:50:31,943 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:50:31" (1/1) ... [2022-03-15 18:50:31,962 INFO L137 Inliner]: procedures = 21, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 156 [2022-03-15 18:50:31,963 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 18:50:31,963 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 18:50:31,963 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 18:50:31,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 18:50:31,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:50:31" (1/1) ... [2022-03-15 18:50:31,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:50:31" (1/1) ... [2022-03-15 18:50:31,977 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:50:31" (1/1) ... [2022-03-15 18:50:31,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:50:31" (1/1) ... [2022-03-15 18:50:31,981 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:50:31" (1/1) ... [2022-03-15 18:50:31,982 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:50:31" (1/1) ... [2022-03-15 18:50:31,983 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:50:31" (1/1) ... [2022-03-15 18:50:31,984 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 18:50:31,985 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 18:50:31,985 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 18:50:31,985 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 18:50:31,989 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:50:31" (1/1) ... [2022-03-15 18:50:31,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 18:50:32,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:50:32,016 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-15 18:50:32,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-15 18:50:32,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-15 18:50:32,060 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-15 18:50:32,060 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-15 18:50:32,060 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-15 18:50:32,060 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-15 18:50:32,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-15 18:50:32,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-15 18:50:32,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-15 18:50:32,061 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-03-15 18:50:32,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-03-15 18:50:32,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 18:50:32,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 18:50:32,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-15 18:50:32,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-15 18:50:32,065 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-15 18:50:32,136 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 18:50:32,137 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 18:50:32,348 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 18:50:32,411 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 18:50:32,411 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-15 18:50:32,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 06:50:32 BoogieIcfgContainer [2022-03-15 18:50:32,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 18:50:32,413 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 18:50:32,414 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 18:50:32,417 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 18:50:32,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.03 06:50:31" (1/3) ... [2022-03-15 18:50:32,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@145b26fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 06:50:32, skipping insertion in model container [2022-03-15 18:50:32,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:50:31" (2/3) ... [2022-03-15 18:50:32,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@145b26fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 06:50:32, skipping insertion in model container [2022-03-15 18:50:32,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 06:50:32" (3/3) ... [2022-03-15 18:50:32,419 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-bakery-2.wvr.c [2022-03-15 18:50:32,422 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 18:50:32,423 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-15 18:50:32,423 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 18:50:32,423 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 18:50:32,466 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:50:32,466 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:50:32,467 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:50:32,467 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:50:32,467 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:50:32,467 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:50:32,467 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:50:32,468 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:50:32,468 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:50:32,468 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:50:32,469 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:50:32,469 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:50:32,469 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:50:32,469 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:50:32,469 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:50:32,469 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:50:32,470 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:50:32,470 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:50:32,471 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:50:32,471 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:50:32,471 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:50:32,471 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:50:32,472 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:50:32,472 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:50:32,472 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:50:32,472 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:50:32,472 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:50:32,473 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:50:32,474 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:50:32,474 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:50:32,474 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:50:32,474 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:50:32,477 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:50:32,477 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:50:32,477 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:50:32,477 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:50:32,477 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:50:32,477 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:50:32,479 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:50:32,479 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:50:32,479 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:50:32,479 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:50:32,479 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:50:32,479 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:50:32,484 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-15 18:50:32,520 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 18:50:32,526 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=MCR, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=true, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-15 18:50:32,527 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-15 18:50:32,537 INFO L126 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-03-15 18:50:32,542 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 113 places, 108 transitions, 232 flow [2022-03-15 18:50:32,544 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 113 places, 108 transitions, 232 flow [2022-03-15 18:50:32,545 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 113 places, 108 transitions, 232 flow [2022-03-15 18:50:32,578 INFO L129 PetriNetUnfolder]: 2/106 cut-off events. [2022-03-15 18:50:32,578 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-03-15 18:50:32,580 INFO L84 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 106 events. 2/106 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2022-03-15 18:50:32,581 INFO L116 LiptonReduction]: Number of co-enabled transitions 572 [2022-03-15 18:50:34,819 INFO L131 LiptonReduction]: Checked pairs total: 4094 [2022-03-15 18:50:34,819 INFO L133 LiptonReduction]: Total number of compositions: 87 [2022-03-15 18:50:34,824 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 37 places, 30 transitions, 76 flow [2022-03-15 18:50:34,846 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 244 states, 243 states have (on average 2.2222222222222223) internal successors, (540), 243 states have internal predecessors, (540), 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) [2022-03-15 18:50:34,848 INFO L276 IsEmpty]: Start isEmpty. Operand has 244 states, 243 states have (on average 2.2222222222222223) internal successors, (540), 243 states have internal predecessors, (540), 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) [2022-03-15 18:50:34,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-15 18:50:34,855 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:50:34,855 INFO L514 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] [2022-03-15 18:50:34,856 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 18:50:34,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:50:34,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1781892427, now seen corresponding path program 1 times [2022-03-15 18:50:34,870 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:50:34,870 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020823415] [2022-03-15 18:50:34,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:50:34,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:50:34,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:50:35,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:50:35,079 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:50:35,079 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020823415] [2022-03-15 18:50:35,083 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020823415] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 18:50:35,083 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 18:50:35,083 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 18:50:35,084 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [80782644] [2022-03-15 18:50:35,085 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:50:35,088 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:50:35,110 INFO L252 McrAutomatonBuilder]: Finished intersection with 74 states and 133 transitions. [2022-03-15 18:50:35,111 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:50:35,500 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:50:35,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-15 18:50:35,502 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:50:35,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-15 18:50:35,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-15 18:50:35,516 INFO L87 Difference]: Start difference. First operand has 244 states, 243 states have (on average 2.2222222222222223) internal successors, (540), 243 states have internal predecessors, (540), 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 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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) [2022-03-15 18:50:35,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:50:35,674 INFO L93 Difference]: Finished difference Result 295 states and 619 transitions. [2022-03-15 18:50:35,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-15 18:50:35,679 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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 27 [2022-03-15 18:50:35,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:50:35,688 INFO L225 Difference]: With dead ends: 295 [2022-03-15 18:50:35,688 INFO L226 Difference]: Without dead ends: 250 [2022-03-15 18:50:35,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-03-15 18:50:35,692 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 34 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:50:35,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 41 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 18:50:35,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-03-15 18:50:35,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 216. [2022-03-15 18:50:35,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 2.186046511627907) internal successors, (470), 215 states have internal predecessors, (470), 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) [2022-03-15 18:50:35,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 470 transitions. [2022-03-15 18:50:35,721 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 470 transitions. Word has length 27 [2022-03-15 18:50:35,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:50:35,721 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 470 transitions. [2022-03-15 18:50:35,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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) [2022-03-15 18:50:35,722 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 470 transitions. [2022-03-15 18:50:35,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-15 18:50:35,723 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:50:35,723 INFO L514 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] [2022-03-15 18:50:35,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 18:50:35,723 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 18:50:35,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:50:35,724 INFO L85 PathProgramCache]: Analyzing trace with hash 765152821, now seen corresponding path program 2 times [2022-03-15 18:50:35,724 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:50:35,725 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465530560] [2022-03-15 18:50:35,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:50:35,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:50:35,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:50:35,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:50:35,827 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:50:35,827 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465530560] [2022-03-15 18:50:35,827 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465530560] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 18:50:35,828 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 18:50:35,828 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-15 18:50:35,828 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [808979003] [2022-03-15 18:50:35,828 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:50:35,830 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:50:35,836 INFO L252 McrAutomatonBuilder]: Finished intersection with 74 states and 127 transitions. [2022-03-15 18:50:35,836 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:50:36,224 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [1353#(and (or (<= 1 ~n2~0) (not (= ~n1~0 0))) (not (= ~n2~0 0)) (or (<= 1 ~n2~0) (<= ~n1~0 0)))] [2022-03-15 18:50:36,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 18:50:36,225 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:50:36,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 18:50:36,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-03-15 18:50:36,226 INFO L87 Difference]: Start difference. First operand 216 states and 470 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 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) [2022-03-15 18:50:36,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:50:36,338 INFO L93 Difference]: Finished difference Result 294 states and 614 transitions. [2022-03-15 18:50:36,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-15 18:50:36,339 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 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 27 [2022-03-15 18:50:36,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:50:36,340 INFO L225 Difference]: With dead ends: 294 [2022-03-15 18:50:36,340 INFO L226 Difference]: Without dead ends: 230 [2022-03-15 18:50:36,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-03-15 18:50:36,341 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 45 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:50:36,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 71 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 18:50:36,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-03-15 18:50:36,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 196. [2022-03-15 18:50:36,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 2.1538461538461537) internal successors, (420), 195 states have internal predecessors, (420), 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) [2022-03-15 18:50:36,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 420 transitions. [2022-03-15 18:50:36,348 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 420 transitions. Word has length 27 [2022-03-15 18:50:36,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:50:36,349 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 420 transitions. [2022-03-15 18:50:36,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 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) [2022-03-15 18:50:36,349 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 420 transitions. [2022-03-15 18:50:36,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-15 18:50:36,350 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:50:36,350 INFO L514 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] [2022-03-15 18:50:36,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 18:50:36,350 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 18:50:36,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:50:36,351 INFO L85 PathProgramCache]: Analyzing trace with hash 992751701, now seen corresponding path program 3 times [2022-03-15 18:50:36,351 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:50:36,351 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388155990] [2022-03-15 18:50:36,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:50:36,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:50:36,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:50:36,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:50:36,388 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:50:36,388 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388155990] [2022-03-15 18:50:36,388 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388155990] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 18:50:36,388 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 18:50:36,388 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 18:50:36,388 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [842624744] [2022-03-15 18:50:36,388 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:50:36,390 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:50:36,426 INFO L252 McrAutomatonBuilder]: Finished intersection with 74 states and 126 transitions. [2022-03-15 18:50:36,427 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:50:36,584 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:50:36,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 18:50:36,584 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:50:36,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 18:50:36,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 18:50:36,585 INFO L87 Difference]: Start difference. First operand 196 states and 420 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2022-03-15 18:50:36,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:50:36,607 INFO L93 Difference]: Finished difference Result 184 states and 390 transitions. [2022-03-15 18:50:36,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 18:50:36,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 27 [2022-03-15 18:50:36,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:50:36,608 INFO L225 Difference]: With dead ends: 184 [2022-03-15 18:50:36,608 INFO L226 Difference]: Without dead ends: 184 [2022-03-15 18:50:36,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 10 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 18:50:36,609 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 1 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 18:50:36,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 15 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 18:50:36,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-03-15 18:50:36,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2022-03-15 18:50:36,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 2.1311475409836067) internal successors, (390), 183 states have internal predecessors, (390), 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) [2022-03-15 18:50:36,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 390 transitions. [2022-03-15 18:50:36,614 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 390 transitions. Word has length 27 [2022-03-15 18:50:36,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:50:36,615 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 390 transitions. [2022-03-15 18:50:36,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2022-03-15 18:50:36,615 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 390 transitions. [2022-03-15 18:50:36,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-15 18:50:36,615 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:50:36,615 INFO L514 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] [2022-03-15 18:50:36,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-15 18:50:36,616 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 18:50:36,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:50:36,616 INFO L85 PathProgramCache]: Analyzing trace with hash -372942409, now seen corresponding path program 4 times [2022-03-15 18:50:36,617 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:50:36,617 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756678006] [2022-03-15 18:50:36,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:50:36,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:50:36,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:50:36,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:50:36,713 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:50:36,713 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756678006] [2022-03-15 18:50:36,713 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756678006] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 18:50:36,713 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 18:50:36,713 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 18:50:36,713 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1459335035] [2022-03-15 18:50:36,713 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:50:36,715 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:50:36,723 INFO L252 McrAutomatonBuilder]: Finished intersection with 90 states and 166 transitions. [2022-03-15 18:50:36,723 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:50:37,238 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [2603#(and (or (not (<= (+ ~n2~0 1) ~n1~0)) (= (+ ~n2~0 1) ~n1~0)) (not (= ~n1~0 0))), 2604#(and (or (= ~n2~0 ~n1~0) (< ~n2~0 ~n1~0)) (= ~n1~0 0))] [2022-03-15 18:50:37,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 18:50:37,238 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:50:37,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 18:50:37,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-15 18:50:37,239 INFO L87 Difference]: Start difference. First operand 184 states and 390 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 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) [2022-03-15 18:50:37,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:50:37,334 INFO L93 Difference]: Finished difference Result 226 states and 465 transitions. [2022-03-15 18:50:37,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 18:50:37,335 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 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 27 [2022-03-15 18:50:37,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:50:37,336 INFO L225 Difference]: With dead ends: 226 [2022-03-15 18:50:37,337 INFO L226 Difference]: Without dead ends: 226 [2022-03-15 18:50:37,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 54 SyntacticMatches, 5 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-03-15 18:50:37,338 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 38 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:50:37,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 69 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 18:50:37,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2022-03-15 18:50:37,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 156. [2022-03-15 18:50:37,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 2.064516129032258) internal successors, (320), 155 states have internal predecessors, (320), 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) [2022-03-15 18:50:37,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 320 transitions. [2022-03-15 18:50:37,354 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 320 transitions. Word has length 27 [2022-03-15 18:50:37,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:50:37,354 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 320 transitions. [2022-03-15 18:50:37,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 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) [2022-03-15 18:50:37,354 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 320 transitions. [2022-03-15 18:50:37,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-15 18:50:37,355 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:50:37,355 INFO L514 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] [2022-03-15 18:50:37,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-15 18:50:37,355 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 18:50:37,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:50:37,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1524587575, now seen corresponding path program 5 times [2022-03-15 18:50:37,358 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:50:37,358 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866951704] [2022-03-15 18:50:37,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:50:37,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:50:37,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:50:37,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:50:37,447 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:50:37,447 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866951704] [2022-03-15 18:50:37,447 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866951704] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 18:50:37,447 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 18:50:37,447 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 18:50:37,447 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1640217589] [2022-03-15 18:50:37,447 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:50:37,449 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:50:37,456 INFO L252 McrAutomatonBuilder]: Finished intersection with 80 states and 142 transitions. [2022-03-15 18:50:37,456 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:50:37,773 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:50:37,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-15 18:50:37,774 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:50:37,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-15 18:50:37,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-15 18:50:37,774 INFO L87 Difference]: Start difference. First operand 156 states and 320 transitions. Second operand has 7 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) [2022-03-15 18:50:37,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:50:37,856 INFO L93 Difference]: Finished difference Result 155 states and 319 transitions. [2022-03-15 18:50:37,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 18:50:37,856 INFO L78 Accepts]: Start accepts. Automaton has has 7 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 27 [2022-03-15 18:50:37,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:50:37,856 INFO L225 Difference]: With dead ends: 155 [2022-03-15 18:50:37,856 INFO L226 Difference]: Without dead ends: 0 [2022-03-15 18:50:37,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-03-15 18:50:37,857 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 31 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:50:37,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 36 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 18:50:37,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-15 18:50:37,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-15 18:50:37,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-03-15 18:50:37,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-15 18:50:37,858 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2022-03-15 18:50:37,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:50:37,858 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-15 18:50:37,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 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) [2022-03-15 18:50:37,858 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-15 18:50:37,858 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-15 18:50:37,860 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-03-15 18:50:37,860 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-15 18:50:37,860 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-15 18:50:37,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-15 18:50:37,862 INFO L732 BasicCegarLoop]: Path program histogram: [5] [2022-03-15 18:50:37,863 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-15 18:50:37,863 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-15 18:50:37,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.03 06:50:37 BasicIcfg [2022-03-15 18:50:37,864 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-15 18:50:37,865 INFO L158 Benchmark]: Toolchain (without parser) took 6209.75ms. Allocated memory was 218.1MB in the beginning and 299.9MB in the end (delta: 81.8MB). Free memory was 167.2MB in the beginning and 174.1MB in the end (delta: -6.9MB). Peak memory consumption was 75.9MB. Max. memory is 8.0GB. [2022-03-15 18:50:37,865 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 218.1MB. Free memory is still 183.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 18:50:37,865 INFO L158 Benchmark]: CACSL2BoogieTranslator took 270.21ms. Allocated memory is still 218.1MB. Free memory was 167.0MB in the beginning and 192.0MB in the end (delta: -25.0MB). Peak memory consumption was 11.9MB. Max. memory is 8.0GB. [2022-03-15 18:50:37,865 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.70ms. Allocated memory is still 218.1MB. Free memory was 192.0MB in the beginning and 190.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-15 18:50:37,865 INFO L158 Benchmark]: Boogie Preprocessor took 21.00ms. Allocated memory is still 218.1MB. Free memory was 190.4MB in the beginning and 188.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 18:50:37,866 INFO L158 Benchmark]: RCFGBuilder took 427.86ms. Allocated memory is still 218.1MB. Free memory was 188.8MB in the beginning and 171.5MB in the end (delta: 17.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2022-03-15 18:50:37,866 INFO L158 Benchmark]: TraceAbstraction took 5450.93ms. Allocated memory was 218.1MB in the beginning and 299.9MB in the end (delta: 81.8MB). Free memory was 171.0MB in the beginning and 174.1MB in the end (delta: -3.1MB). Peak memory consumption was 79.7MB. Max. memory is 8.0GB. [2022-03-15 18:50:37,867 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 218.1MB. Free memory is still 183.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 270.21ms. Allocated memory is still 218.1MB. Free memory was 167.0MB in the beginning and 192.0MB in the end (delta: -25.0MB). Peak memory consumption was 11.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 34.70ms. Allocated memory is still 218.1MB. Free memory was 192.0MB in the beginning and 190.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 21.00ms. Allocated memory is still 218.1MB. Free memory was 190.4MB in the beginning and 188.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 427.86ms. Allocated memory is still 218.1MB. Free memory was 188.8MB in the beginning and 171.5MB in the end (delta: 17.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 5450.93ms. Allocated memory was 218.1MB in the beginning and 299.9MB in the end (delta: 81.8MB). Free memory was 171.0MB in the beginning and 174.1MB in the end (delta: -3.1MB). Peak memory consumption was 79.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.3s, 113 PlacesBefore, 37 PlacesAfterwards, 108 TransitionsBefore, 30 TransitionsAfterwards, 572 CoEnabledTransitionPairs, 7 FixpointIterations, 67 TrivialSequentialCompositions, 11 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 87 TotalNumberOfCompositions, 4094 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2189, positive: 1921, positive conditional: 0, positive unconditional: 1921, negative: 268, negative conditional: 0, negative unconditional: 268, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 297, positive: 282, positive conditional: 0, positive unconditional: 282, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2189, positive: 1639, positive conditional: 0, positive unconditional: 1639, negative: 253, negative conditional: 0, negative unconditional: 253, unknown: 297, unknown conditional: 0, unknown unconditional: 297] , Statistics on independence cache: Total cache size (in pairs): 111, Positive cache size: 98, Positive conditional cache size: 0, Positive unconditional cache size: 98, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 130]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 133 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 5.3s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 149 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 149 mSDsluCounter, 232 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 576 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 753 IncrementalHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 59 mSDtfsCounter, 753 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 276 GetRequests, 222 SyntacticMatches, 21 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=244occurred in iteration=0, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 138 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 135 NumberOfCodeBlocks, 135 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 130 ConstructedInterpolants, 0 QuantifiedInterpolants, 596 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-03-15 18:50:37,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...