/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-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/NonAtomicIncrement_2Threads.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.abstract-por-f0ea240 [2022-02-10 23:55:34,761 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-10 23:55:34,763 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-10 23:55:34,812 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-10 23:55:34,813 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-10 23:55:34,815 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-10 23:55:34,816 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-10 23:55:34,818 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-10 23:55:34,820 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-10 23:55:34,823 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-10 23:55:34,823 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-10 23:55:34,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2022-02-10 23:55:34,848 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-10 23:55:34,848 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-10 23:55:34,849 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-10 23:55:34,851 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-02-10 23:55:34,881 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-10 23:55:34,881 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-10 23:55:34,882 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-10 23:55:34,882 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-10 23:55:34,882 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-10 23:55:34,882 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-10 23:55:34,883 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-10 23:55:34,883 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-10 23:55:34,883 INFO L138 SettingsManager]: * Use SBE=true [2022-02-10 23:55:34,883 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-10 23:55:34,884 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-10 23:55:34,884 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-10 23:55:34,884 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-10 23:55:34,884 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-10 23:55:34,884 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-10 23:55:34,884 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-10 23:55:34,884 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-10 23:55:34,884 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-10 23:55:34,884 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-10 23:55:34,884 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-10 23:55:34,884 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-10 23:55:34,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-10 23:55:34,885 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-10 23:55:34,885 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-10 23:55:34,886 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-10 23:55:34,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 23:55:34,886 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-10 23:55:34,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-10 23:55:34,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-10 23:55:34,886 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-10 23:55:34,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-10 23:55:34,887 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-10 23:55:34,887 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-10 23:55:34,887 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-10 23:55:35,071 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-10 23:55:35,088 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-10 23:55:35,090 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-10 23:55:35,091 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-10 23:55:35,092 INFO L275 PluginConnector]: CDTParser initialized [2022-02-10 23:55:35,092 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/NonAtomicIncrement_2Threads.c [2022-02-10 23:55:35,139 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc18310f5/ab31b9bc867e4a79b027d0a350f04269/FLAGef908690b [2022-02-10 23:55:35,492 INFO L306 CDTParser]: Found 1 translation units. [2022-02-10 23:55:35,492 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/NonAtomicIncrement_2Threads.c [2022-02-10 23:55:35,492 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2022-02-10 23:55:35,492 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2022-02-10 23:55:35,492 WARN L117 ultiparseSymbolTable]: System include stdbool.h could not be resolved by CDT -- only built-in system includes are available. [2022-02-10 23:55:35,515 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc18310f5/ab31b9bc867e4a79b027d0a350f04269/FLAGef908690b [2022-02-10 23:55:35,524 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc18310f5/ab31b9bc867e4a79b027d0a350f04269 [2022-02-10 23:55:35,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-10 23:55:35,527 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-10 23:55:35,528 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-10 23:55:35,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-10 23:55:35,531 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-10 23:55:35,532 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.02 11:55:35" (1/1) ... [2022-02-10 23:55:35,532 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e779c02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:55:35, skipping insertion in model container [2022-02-10 23:55:35,533 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.02 11:55:35" (1/1) ... [2022-02-10 23:55:35,537 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-10 23:55:35,546 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-10 23:55:35,667 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-10 23:55:35,671 INFO L203 MainTranslator]: Completed pre-run [2022-02-10 23:55:35,679 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-10 23:55:35,687 INFO L208 MainTranslator]: Completed translation [2022-02-10 23:55:35,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:55:35 WrapperNode [2022-02-10 23:55:35,688 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-10 23:55:35,689 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-10 23:55:35,689 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-10 23:55:35,689 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-10 23:55:35,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:55:35" (1/1) ... [2022-02-10 23:55:35,697 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:55:35" (1/1) ... [2022-02-10 23:55:35,709 INFO L137 Inliner]: procedures = 9, calls = 14, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 38 [2022-02-10 23:55:35,710 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-10 23:55:35,710 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-10 23:55:35,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-10 23:55:35,710 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-10 23:55:35,715 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:55:35" (1/1) ... [2022-02-10 23:55:35,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:55:35" (1/1) ... [2022-02-10 23:55:35,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:55:35" (1/1) ... [2022-02-10 23:55:35,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:55:35" (1/1) ... [2022-02-10 23:55:35,732 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:55:35" (1/1) ... [2022-02-10 23:55:35,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:55:35" (1/1) ... [2022-02-10 23:55:35,735 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:55:35" (1/1) ... [2022-02-10 23:55:35,736 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-10 23:55:35,737 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-10 23:55:35,737 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-10 23:55:35,737 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-10 23:55:35,740 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:55:35" (1/1) ... [2022-02-10 23:55:35,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 23:55:35,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:55:35,768 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) [2022-02-10 23:55:35,771 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 [2022-02-10 23:55:35,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-10 23:55:35,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-10 23:55:35,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-10 23:55:35,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-10 23:55:35,795 INFO L130 BoogieDeclarations]: Found specification of procedure secondIncrement [2022-02-10 23:55:35,795 INFO L138 BoogieDeclarations]: Found implementation of procedure secondIncrement [2022-02-10 23:55:35,795 INFO L130 BoogieDeclarations]: Found specification of procedure firstIncrement [2022-02-10 23:55:35,795 INFO L138 BoogieDeclarations]: Found implementation of procedure firstIncrement [2022-02-10 23:55:35,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-10 23:55:35,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-10 23:55:35,797 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-10 23:55:35,844 INFO L234 CfgBuilder]: Building ICFG [2022-02-10 23:55:35,845 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-10 23:55:35,941 INFO L275 CfgBuilder]: Performing block encoding [2022-02-10 23:55:35,948 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-10 23:55:35,948 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-02-10 23:55:35,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 11:55:35 BoogieIcfgContainer [2022-02-10 23:55:35,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-10 23:55:35,951 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-10 23:55:35,951 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-10 23:55:35,969 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-10 23:55:35,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.02 11:55:35" (1/3) ... [2022-02-10 23:55:35,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@414aa484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 11:55:35, skipping insertion in model container [2022-02-10 23:55:35,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 11:55:35" (2/3) ... [2022-02-10 23:55:35,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@414aa484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 11:55:35, skipping insertion in model container [2022-02-10 23:55:35,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 11:55:35" (3/3) ... [2022-02-10 23:55:35,971 INFO L112 eAbstractionObserver]: Analyzing ICFG NonAtomicIncrement_2Threads.c [2022-02-10 23:55:35,974 WARN L154 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-10 23:55:35,974 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-10 23:55:35,974 INFO L168 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-10 23:55:35,974 INFO L538 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-10 23:55:36,003 WARN L322 ript$VariableManager]: TermVariable secondIncrementThread1of1ForFork1_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,004 WARN L322 ript$VariableManager]: TermVariable secondIncrementThread1of1ForFork1_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,004 WARN L322 ript$VariableManager]: TermVariable secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,004 WARN L322 ript$VariableManager]: TermVariable secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,004 WARN L322 ript$VariableManager]: TermVariable secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,004 WARN L322 ript$VariableManager]: TermVariable secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,005 WARN L322 ript$VariableManager]: TermVariable secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,005 WARN L322 ript$VariableManager]: TermVariable secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,005 WARN L322 ript$VariableManager]: TermVariable secondIncrementThread1of1ForFork1_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,005 WARN L322 ript$VariableManager]: TermVariable secondIncrementThread1of1ForFork1_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,005 WARN L322 ript$VariableManager]: TermVariable secondIncrementThread1of1ForFork1_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,005 WARN L322 ript$VariableManager]: TermVariable secondIncrementThread1of1ForFork1_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,006 WARN L322 ript$VariableManager]: TermVariable secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,006 WARN L322 ript$VariableManager]: TermVariable |secondIncrementThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,006 WARN L322 ript$VariableManager]: TermVariable secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,006 WARN L322 ript$VariableManager]: TermVariable |secondIncrementThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,006 WARN L322 ript$VariableManager]: TermVariable |secondIncrementThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,006 WARN L322 ript$VariableManager]: TermVariable secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,006 WARN L322 ript$VariableManager]: TermVariable |secondIncrementThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,007 WARN L322 ript$VariableManager]: TermVariable secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,007 WARN L322 ript$VariableManager]: TermVariable |secondIncrementThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,007 WARN L322 ript$VariableManager]: TermVariable |secondIncrementThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,007 WARN L322 ript$VariableManager]: TermVariable firstIncrementThread1of1ForFork0_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,007 WARN L322 ript$VariableManager]: TermVariable firstIncrementThread1of1ForFork0_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,007 WARN L322 ript$VariableManager]: TermVariable firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,007 WARN L322 ript$VariableManager]: TermVariable firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,008 WARN L322 ript$VariableManager]: TermVariable firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,008 WARN L322 ript$VariableManager]: TermVariable firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,008 WARN L322 ript$VariableManager]: TermVariable firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,008 WARN L322 ript$VariableManager]: TermVariable firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,009 WARN L322 ript$VariableManager]: TermVariable firstIncrementThread1of1ForFork0_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,009 WARN L322 ript$VariableManager]: TermVariable firstIncrementThread1of1ForFork0_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,009 WARN L322 ript$VariableManager]: TermVariable firstIncrementThread1of1ForFork0_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,009 WARN L322 ript$VariableManager]: TermVariable firstIncrementThread1of1ForFork0_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,009 WARN L322 ript$VariableManager]: TermVariable firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,009 WARN L322 ript$VariableManager]: TermVariable |firstIncrementThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,010 WARN L322 ript$VariableManager]: TermVariable firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,010 WARN L322 ript$VariableManager]: TermVariable |firstIncrementThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,010 WARN L322 ript$VariableManager]: TermVariable |firstIncrementThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,010 WARN L322 ript$VariableManager]: TermVariable firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,010 WARN L322 ript$VariableManager]: TermVariable |firstIncrementThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,010 WARN L322 ript$VariableManager]: TermVariable firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,010 WARN L322 ript$VariableManager]: TermVariable |firstIncrementThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,010 WARN L322 ript$VariableManager]: TermVariable |firstIncrementThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,013 WARN L322 ript$VariableManager]: TermVariable |firstIncrementThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,013 WARN L322 ript$VariableManager]: TermVariable firstIncrementThread1of1ForFork0_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,013 WARN L322 ript$VariableManager]: TermVariable |firstIncrementThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,013 WARN L322 ript$VariableManager]: TermVariable |firstIncrementThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,013 WARN L322 ript$VariableManager]: TermVariable firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,015 WARN L322 ript$VariableManager]: TermVariable |secondIncrementThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,015 WARN L322 ript$VariableManager]: TermVariable |secondIncrementThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,015 WARN L322 ript$VariableManager]: TermVariable |secondIncrementThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,015 WARN L322 ript$VariableManager]: TermVariable secondIncrementThread1of1ForFork1_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,015 WARN L322 ript$VariableManager]: TermVariable secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:55:36,018 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-02-10 23:55:36,047 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-10 23:55:36,052 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, 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=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-10 23:55:36,052 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-10 23:55:36,059 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 67 places, 64 transitions, 144 flow [2022-02-10 23:55:36,118 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 509 states, 508 states have (on average 2.732283464566929) internal successors, (1388), 508 states have internal predecessors, (1388), 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) [2022-02-10 23:55:36,121 INFO L276 IsEmpty]: Start isEmpty. Operand has 509 states, 508 states have (on average 2.732283464566929) internal successors, (1388), 508 states have internal predecessors, (1388), 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) [2022-02-10 23:55:36,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 23:55:36,133 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:55:36,133 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:55:36,133 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:55:36,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:55:36,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1750981028, now seen corresponding path program 1 times [2022-02-10 23:55:36,143 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:55:36,144 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264303087] [2022-02-10 23:55:36,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:55:36,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:55:36,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:55:36,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:55:36,278 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:55:36,279 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264303087] [2022-02-10 23:55:36,279 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264303087] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:55:36,280 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:55:36,280 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-10 23:55:36,281 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422425707] [2022-02-10 23:55:36,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:55:36,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-10 23:55:36,286 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:55:36,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-10 23:55:36,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-10 23:55:36,305 INFO L87 Difference]: Start difference. First operand has 509 states, 508 states have (on average 2.732283464566929) internal successors, (1388), 508 states have internal predecessors, (1388), 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 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:55:36,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:55:36,333 INFO L93 Difference]: Finished difference Result 509 states and 1299 transitions. [2022-02-10 23:55:36,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-10 23:55:36,335 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-10 23:55:36,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:55:36,348 INFO L225 Difference]: With dead ends: 509 [2022-02-10 23:55:36,348 INFO L226 Difference]: Without dead ends: 509 [2022-02-10 23:55:36,350 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-10 23:55:36,352 INFO L934 BasicCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:55:36,352 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 23:55:36,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2022-02-10 23:55:36,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 509. [2022-02-10 23:55:36,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 508 states have (on average 2.5570866141732282) internal successors, (1299), 508 states have internal predecessors, (1299), 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) [2022-02-10 23:55:36,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 1299 transitions. [2022-02-10 23:55:36,416 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 1299 transitions. Word has length 39 [2022-02-10 23:55:36,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:55:36,416 INFO L470 AbstractCegarLoop]: Abstraction has 509 states and 1299 transitions. [2022-02-10 23:55:36,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:55:36,416 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 1299 transitions. [2022-02-10 23:55:36,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-10 23:55:36,418 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:55:36,418 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:55:36,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-10 23:55:36,418 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:55:36,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:55:36,419 INFO L85 PathProgramCache]: Analyzing trace with hash -824623202, now seen corresponding path program 1 times [2022-02-10 23:55:36,419 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:55:36,419 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140754495] [2022-02-10 23:55:36,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:55:36,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:55:36,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:55:36,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:55:36,487 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:55:36,487 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140754495] [2022-02-10 23:55:36,487 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140754495] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:55:36,487 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:55:36,487 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-10 23:55:36,487 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053266445] [2022-02-10 23:55:36,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:55:36,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-10 23:55:36,488 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:55:36,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-10 23:55:36,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-10 23:55:36,489 INFO L87 Difference]: Start difference. First operand 509 states and 1299 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:55:36,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:55:36,531 INFO L93 Difference]: Finished difference Result 724 states and 1879 transitions. [2022-02-10 23:55:36,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-10 23:55:36,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-10 23:55:36,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:55:36,535 INFO L225 Difference]: With dead ends: 724 [2022-02-10 23:55:36,536 INFO L226 Difference]: Without dead ends: 724 [2022-02-10 23:55:36,536 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-10 23:55:36,537 INFO L934 BasicCegarLoop]: 60 mSDtfsCounter, 20 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:55:36,537 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 102 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 23:55:36,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2022-02-10 23:55:36,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 552. [2022-02-10 23:55:36,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 551 states have (on average 2.5680580762250456) internal successors, (1415), 551 states have internal predecessors, (1415), 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) [2022-02-10 23:55:36,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 1415 transitions. [2022-02-10 23:55:36,563 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 1415 transitions. Word has length 39 [2022-02-10 23:55:36,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:55:36,563 INFO L470 AbstractCegarLoop]: Abstraction has 552 states and 1415 transitions. [2022-02-10 23:55:36,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:55:36,564 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 1415 transitions. [2022-02-10 23:55:36,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-10 23:55:36,565 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:55:36,565 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:55:36,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-10 23:55:36,566 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:55:36,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:55:36,566 INFO L85 PathProgramCache]: Analyzing trace with hash 643343514, now seen corresponding path program 1 times [2022-02-10 23:55:36,566 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:55:36,566 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960049244] [2022-02-10 23:55:36,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:55:36,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:55:36,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:55:36,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:55:36,620 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:55:36,620 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960049244] [2022-02-10 23:55:36,620 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960049244] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:55:36,620 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:55:36,620 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-10 23:55:36,620 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893687792] [2022-02-10 23:55:36,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:55:36,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-10 23:55:36,621 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:55:36,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-10 23:55:36,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-10 23:55:36,621 INFO L87 Difference]: Start difference. First operand 552 states and 1415 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:55:36,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:55:36,650 INFO L93 Difference]: Finished difference Result 802 states and 2080 transitions. [2022-02-10 23:55:36,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-10 23:55:36,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-10 23:55:36,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:55:36,654 INFO L225 Difference]: With dead ends: 802 [2022-02-10 23:55:36,654 INFO L226 Difference]: Without dead ends: 802 [2022-02-10 23:55:36,655 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-10 23:55:36,660 INFO L934 BasicCegarLoop]: 63 mSDtfsCounter, 7 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:55:36,661 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 105 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 23:55:36,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2022-02-10 23:55:36,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 602. [2022-02-10 23:55:36,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 601 states have (on average 2.5757071547420964) internal successors, (1548), 601 states have internal predecessors, (1548), 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) [2022-02-10 23:55:36,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 1548 transitions. [2022-02-10 23:55:36,681 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 1548 transitions. Word has length 45 [2022-02-10 23:55:36,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:55:36,682 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 1548 transitions. [2022-02-10 23:55:36,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:55:36,682 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 1548 transitions. [2022-02-10 23:55:36,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-10 23:55:36,685 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:55:36,685 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:55:36,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-10 23:55:36,686 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:55:36,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:55:36,687 INFO L85 PathProgramCache]: Analyzing trace with hash -27155710, now seen corresponding path program 1 times [2022-02-10 23:55:36,687 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:55:36,687 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181070673] [2022-02-10 23:55:36,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:55:36,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:55:36,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:55:36,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:55:36,786 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:55:36,786 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181070673] [2022-02-10 23:55:36,787 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181070673] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:55:36,787 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637814070] [2022-02-10 23:55:36,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:55:36,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:55:36,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:55:36,789 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:55:36,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-10 23:55:36,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:55:36,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2022-02-10 23:55:36,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:55:36,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:55:36,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:55:37,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:55:37,082 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637814070] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:55:37,082 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:55:37,082 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-02-10 23:55:37,082 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216262180] [2022-02-10 23:55:37,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:55:37,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-10 23:55:37,083 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:55:37,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-10 23:55:37,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-02-10 23:55:37,084 INFO L87 Difference]: Start difference. First operand 602 states and 1548 transitions. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 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) [2022-02-10 23:55:37,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:55:37,153 INFO L93 Difference]: Finished difference Result 1166 states and 3072 transitions. [2022-02-10 23:55:37,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-10 23:55:37,153 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 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) Word has length 51 [2022-02-10 23:55:37,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:55:37,158 INFO L225 Difference]: With dead ends: 1166 [2022-02-10 23:55:37,158 INFO L226 Difference]: Without dead ends: 1166 [2022-02-10 23:55:37,160 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-02-10 23:55:37,165 INFO L934 BasicCegarLoop]: 74 mSDtfsCounter, 278 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:55:37,166 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 320 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 23:55:37,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2022-02-10 23:55:37,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1166. [2022-02-10 23:55:37,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 1165 states have (on average 2.6369098712446353) internal successors, (3072), 1165 states have internal predecessors, (3072), 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) [2022-02-10 23:55:37,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 3072 transitions. [2022-02-10 23:55:37,192 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 3072 transitions. Word has length 51 [2022-02-10 23:55:37,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:55:37,193 INFO L470 AbstractCegarLoop]: Abstraction has 1166 states and 3072 transitions. [2022-02-10 23:55:37,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 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) [2022-02-10 23:55:37,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 3072 transitions. [2022-02-10 23:55:37,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-02-10 23:55:37,196 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:55:37,197 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:55:37,215 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-02-10 23:55:37,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:55:37,408 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:55:37,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:55:37,409 INFO L85 PathProgramCache]: Analyzing trace with hash 512494586, now seen corresponding path program 2 times [2022-02-10 23:55:37,409 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:55:37,409 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990121499] [2022-02-10 23:55:37,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:55:37,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:55:37,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:55:37,509 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-02-10 23:55:37,510 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:55:37,510 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990121499] [2022-02-10 23:55:37,510 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990121499] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:55:37,510 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241668653] [2022-02-10 23:55:37,510 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:55:37,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:55:37,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:55:37,524 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:55:37,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-10 23:55:37,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:55:37,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:55:37,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2022-02-10 23:55:37,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:55:37,745 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-02-10 23:55:37,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:55:37,855 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-02-10 23:55:37,856 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241668653] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:55:37,856 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:55:37,856 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-02-10 23:55:37,856 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884063931] [2022-02-10 23:55:37,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:55:37,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-10 23:55:37,857 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:55:37,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-10 23:55:37,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-02-10 23:55:37,857 INFO L87 Difference]: Start difference. First operand 1166 states and 3072 transitions. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 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) [2022-02-10 23:55:37,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:55:37,918 INFO L93 Difference]: Finished difference Result 2342 states and 6252 transitions. [2022-02-10 23:55:37,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-10 23:55:37,918 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 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 63 [2022-02-10 23:55:37,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:55:37,926 INFO L225 Difference]: With dead ends: 2342 [2022-02-10 23:55:37,926 INFO L226 Difference]: Without dead ends: 2342 [2022-02-10 23:55:37,926 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-02-10 23:55:37,927 INFO L934 BasicCegarLoop]: 80 mSDtfsCounter, 287 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:55:37,928 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 319 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 23:55:37,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2342 states. [2022-02-10 23:55:37,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2342 to 2342. [2022-02-10 23:55:37,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2342 states, 2341 states have (on average 2.670653566851773) internal successors, (6252), 2341 states have internal predecessors, (6252), 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) [2022-02-10 23:55:37,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2342 states to 2342 states and 6252 transitions. [2022-02-10 23:55:37,968 INFO L78 Accepts]: Start accepts. Automaton has 2342 states and 6252 transitions. Word has length 63 [2022-02-10 23:55:37,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:55:37,968 INFO L470 AbstractCegarLoop]: Abstraction has 2342 states and 6252 transitions. [2022-02-10 23:55:37,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 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) [2022-02-10 23:55:37,968 INFO L276 IsEmpty]: Start isEmpty. Operand 2342 states and 6252 transitions. [2022-02-10 23:55:37,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 23:55:37,972 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:55:37,972 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:55:37,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-10 23:55:38,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:55:38,187 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:55:38,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:55:38,188 INFO L85 PathProgramCache]: Analyzing trace with hash 629255106, now seen corresponding path program 3 times [2022-02-10 23:55:38,188 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:55:38,188 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219253230] [2022-02-10 23:55:38,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:55:38,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:55:38,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:55:38,270 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-02-10 23:55:38,270 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:55:38,271 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219253230] [2022-02-10 23:55:38,271 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219253230] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:55:38,271 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370345001] [2022-02-10 23:55:38,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:55:38,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:55:38,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:55:38,278 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:55:38,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-10 23:55:38,325 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 23:55:38,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:55:38,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 23:55:38,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:55:38,514 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-02-10 23:55:38,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:55:38,643 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-02-10 23:55:38,644 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370345001] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:55:38,644 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:55:38,644 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-02-10 23:55:38,644 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589661049] [2022-02-10 23:55:38,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:55:38,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-10 23:55:38,644 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:55:38,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-10 23:55:38,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2022-02-10 23:55:38,645 INFO L87 Difference]: Start difference. First operand 2342 states and 6252 transitions. Second operand has 18 states, 18 states have (on average 7.166666666666667) internal successors, (129), 18 states have internal predecessors, (129), 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) [2022-02-10 23:55:40,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:55:40,824 INFO L93 Difference]: Finished difference Result 4948 states and 13342 transitions. [2022-02-10 23:55:40,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2022-02-10 23:55:40,833 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 7.166666666666667) internal successors, (129), 18 states have internal predecessors, (129), 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 75 [2022-02-10 23:55:40,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:55:40,851 INFO L225 Difference]: With dead ends: 4948 [2022-02-10 23:55:40,851 INFO L226 Difference]: Without dead ends: 4948 [2022-02-10 23:55:40,856 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11221 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=5484, Invalid=20598, Unknown=0, NotChecked=0, Total=26082 [2022-02-10 23:55:40,858 INFO L934 BasicCegarLoop]: 107 mSDtfsCounter, 1828 mSDsluCounter, 961 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1828 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 23:55:40,858 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1828 Valid, 1013 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 23:55:40,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4948 states. [2022-02-10 23:55:40,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4948 to 4376. [2022-02-10 23:55:40,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4376 states, 4375 states have (on average 2.6921142857142857) internal successors, (11778), 4375 states have internal predecessors, (11778), 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) [2022-02-10 23:55:40,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4376 states to 4376 states and 11778 transitions. [2022-02-10 23:55:40,964 INFO L78 Accepts]: Start accepts. Automaton has 4376 states and 11778 transitions. Word has length 75 [2022-02-10 23:55:40,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:55:40,964 INFO L470 AbstractCegarLoop]: Abstraction has 4376 states and 11778 transitions. [2022-02-10 23:55:40,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.166666666666667) internal successors, (129), 18 states have internal predecessors, (129), 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) [2022-02-10 23:55:40,964 INFO L276 IsEmpty]: Start isEmpty. Operand 4376 states and 11778 transitions. [2022-02-10 23:55:40,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-02-10 23:55:40,972 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:55:40,972 INFO L515 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:55:40,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-10 23:55:41,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:55:41,189 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:55:41,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:55:41,190 INFO L85 PathProgramCache]: Analyzing trace with hash 628677766, now seen corresponding path program 4 times [2022-02-10 23:55:41,190 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:55:41,190 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139910869] [2022-02-10 23:55:41,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:55:41,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:55:41,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:55:41,284 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-02-10 23:55:41,284 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:55:41,284 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139910869] [2022-02-10 23:55:41,284 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139910869] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:55:41,284 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948861907] [2022-02-10 23:55:41,284 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:55:41,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:55:41,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:55:41,285 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:55:41,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-10 23:55:41,332 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:55:41,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:55:41,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 23:55:41,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:55:41,457 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-02-10 23:55:41,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:55:41,569 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-02-10 23:55:41,570 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948861907] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:55:41,570 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:55:41,570 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 13 [2022-02-10 23:55:41,570 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075680032] [2022-02-10 23:55:41,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:55:41,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 23:55:41,570 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:55:41,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 23:55:41,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-02-10 23:55:41,571 INFO L87 Difference]: Start difference. First operand 4376 states and 11778 transitions. Second operand has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 states have internal predecessors, (75), 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) [2022-02-10 23:55:41,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:55:41,662 INFO L93 Difference]: Finished difference Result 5234 states and 14124 transitions. [2022-02-10 23:55:41,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 23:55:41,662 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 states have internal predecessors, (75), 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 93 [2022-02-10 23:55:41,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:55:41,679 INFO L225 Difference]: With dead ends: 5234 [2022-02-10 23:55:41,679 INFO L226 Difference]: Without dead ends: 5234 [2022-02-10 23:55:41,679 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 191 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2022-02-10 23:55:41,680 INFO L934 BasicCegarLoop]: 74 mSDtfsCounter, 502 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:55:41,680 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [502 Valid, 400 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 23:55:41,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5234 states. [2022-02-10 23:55:41,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5234 to 5234. [2022-02-10 23:55:41,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5234 states, 5233 states have (on average 2.699025415631569) internal successors, (14124), 5233 states have internal predecessors, (14124), 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) [2022-02-10 23:55:41,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5234 states to 5234 states and 14124 transitions. [2022-02-10 23:55:41,797 INFO L78 Accepts]: Start accepts. Automaton has 5234 states and 14124 transitions. Word has length 93 [2022-02-10 23:55:41,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:55:41,798 INFO L470 AbstractCegarLoop]: Abstraction has 5234 states and 14124 transitions. [2022-02-10 23:55:41,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 states have internal predecessors, (75), 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) [2022-02-10 23:55:41,799 INFO L276 IsEmpty]: Start isEmpty. Operand 5234 states and 14124 transitions. [2022-02-10 23:55:41,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-02-10 23:55:41,811 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:55:41,812 INFO L515 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:55:41,827 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-02-10 23:55:42,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:55:42,027 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:55:42,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:55:42,030 INFO L85 PathProgramCache]: Analyzing trace with hash 671689858, now seen corresponding path program 5 times [2022-02-10 23:55:42,030 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:55:42,030 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392985444] [2022-02-10 23:55:42,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:55:42,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:55:42,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:55:42,262 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 117 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:55:42,262 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:55:42,262 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392985444] [2022-02-10 23:55:42,263 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392985444] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:55:42,263 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422668676] [2022-02-10 23:55:42,263 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:55:42,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:55:42,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:55:42,264 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:55:42,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-10 23:55:42,335 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-10 23:55:42,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:55:42,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 23:55:42,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:55:42,523 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:55:42,523 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-10 23:55:42,523 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422668676] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:55:42,523 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-10 23:55:42,523 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [22] total 24 [2022-02-10 23:55:42,523 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160464565] [2022-02-10 23:55:42,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:55:42,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 23:55:42,524 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:55:42,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 23:55:42,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2022-02-10 23:55:42,524 INFO L87 Difference]: Start difference. First operand 5234 states and 14124 transitions. Second operand has 23 states, 22 states have (on average 4.5) internal successors, (99), 23 states have internal predecessors, (99), 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) [2022-02-10 23:55:43,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:55:43,133 INFO L93 Difference]: Finished difference Result 19427 states and 52787 transitions. [2022-02-10 23:55:43,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-10 23:55:43,134 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 4.5) internal successors, (99), 23 states have internal predecessors, (99), 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 99 [2022-02-10 23:55:43,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:55:43,179 INFO L225 Difference]: With dead ends: 19427 [2022-02-10 23:55:43,179 INFO L226 Difference]: Without dead ends: 11846 [2022-02-10 23:55:43,179 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=720, Invalid=1632, Unknown=0, NotChecked=0, Total=2352 [2022-02-10 23:55:43,180 INFO L934 BasicCegarLoop]: 335 mSDtfsCounter, 682 mSDsluCounter, 1997 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 2200 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 23:55:43,180 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [682 Valid, 2200 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 23:55:43,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11846 states. [2022-02-10 23:55:43,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11846 to 7602. [2022-02-10 23:55:43,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7602 states, 7601 states have (on average 2.7043810024996713) internal successors, (20556), 7601 states have internal predecessors, (20556), 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) [2022-02-10 23:55:43,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7602 states to 7602 states and 20556 transitions. [2022-02-10 23:55:43,358 INFO L78 Accepts]: Start accepts. Automaton has 7602 states and 20556 transitions. Word has length 99 [2022-02-10 23:55:43,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:55:43,358 INFO L470 AbstractCegarLoop]: Abstraction has 7602 states and 20556 transitions. [2022-02-10 23:55:43,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 4.5) internal successors, (99), 23 states have internal predecessors, (99), 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) [2022-02-10 23:55:43,358 INFO L276 IsEmpty]: Start isEmpty. Operand 7602 states and 20556 transitions. [2022-02-10 23:55:43,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-02-10 23:55:43,373 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:55:43,373 INFO L515 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:55:43,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-10 23:55:43,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:55:43,588 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:55:43,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:55:43,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1966296506, now seen corresponding path program 6 times [2022-02-10 23:55:43,588 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:55:43,588 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990783097] [2022-02-10 23:55:43,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:55:43,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:55:43,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:55:43,818 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 114 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:55:43,818 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:55:43,819 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990783097] [2022-02-10 23:55:43,819 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990783097] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:55:43,819 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118167406] [2022-02-10 23:55:43,819 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:55:43,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:55:43,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:55:43,821 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 23:55:43,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-10 23:55:43,904 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-10 23:55:43,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:55:43,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 23:55:43,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:55:44,109 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 126 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:55:44,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:55:44,437 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 126 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:55:44,437 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118167406] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:55:44,437 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:55:44,438 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 38 [2022-02-10 23:55:44,438 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367512452] [2022-02-10 23:55:44,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:55:44,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-10 23:55:44,438 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:55:44,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-10 23:55:44,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 23:55:44,439 INFO L87 Difference]: Start difference. First operand 7602 states and 20556 transitions. Second operand has 39 states, 38 states have (on average 5.315789473684211) internal successors, (202), 39 states have internal predecessors, (202), 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) [2022-02-10 23:55:45,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:55:45,504 INFO L93 Difference]: Finished difference Result 37224 states and 100954 transitions. [2022-02-10 23:55:45,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-10 23:55:45,504 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 5.315789473684211) internal successors, (202), 39 states have internal predecessors, (202), 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 99 [2022-02-10 23:55:45,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:55:45,505 INFO L225 Difference]: With dead ends: 37224 [2022-02-10 23:55:45,505 INFO L226 Difference]: Without dead ends: 0 [2022-02-10 23:55:45,506 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1697 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=2094, Invalid=5216, Unknown=0, NotChecked=0, Total=7310 [2022-02-10 23:55:45,506 INFO L934 BasicCegarLoop]: 359 mSDtfsCounter, 1196 mSDsluCounter, 2819 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1196 SdHoareTripleChecker+Valid, 3041 SdHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 23:55:45,507 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1196 Valid, 3041 Invalid, 1067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 925 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 23:55:45,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-10 23:55:45,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-10 23:55:45,507 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) [2022-02-10 23:55:45,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-10 23:55:45,507 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 99 [2022-02-10 23:55:45,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:55:45,507 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-10 23:55:45,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 5.315789473684211) internal successors, (202), 39 states have internal predecessors, (202), 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) [2022-02-10 23:55:45,508 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-10 23:55:45,508 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-10 23:55:45,509 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2022-02-10 23:55:45,510 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-02-10 23:55:45,510 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-02-10 23:55:45,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-10 23:55:45,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:55:45,744 INFO L733 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1] [2022-02-10 23:55:45,746 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-10 23:55:45,746 INFO L184 ceAbstractionStarter]: Computing trace abstraction results [2022-02-10 23:55:45,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.02 11:55:45 BasicIcfg [2022-02-10 23:55:45,748 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-10 23:55:45,748 INFO L158 Benchmark]: Toolchain (without parser) took 10221.32ms. Allocated memory was 189.8MB in the beginning and 306.2MB in the end (delta: 116.4MB). Free memory was 137.6MB in the beginning and 164.7MB in the end (delta: -27.1MB). Peak memory consumption was 90.8MB. Max. memory is 8.0GB. [2022-02-10 23:55:45,748 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 189.8MB. Free memory is still 155.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-10 23:55:45,748 INFO L158 Benchmark]: CACSL2BoogieTranslator took 159.73ms. Allocated memory is still 189.8MB. Free memory was 137.3MB in the beginning and 163.3MB in the end (delta: -26.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-02-10 23:55:45,749 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.15ms. Allocated memory is still 189.8MB. Free memory was 163.3MB in the beginning and 161.9MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-10 23:55:45,749 INFO L158 Benchmark]: Boogie Preprocessor took 25.97ms. Allocated memory is still 189.8MB. Free memory was 161.9MB in the beginning and 160.8MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-10 23:55:45,749 INFO L158 Benchmark]: RCFGBuilder took 212.88ms. Allocated memory is still 189.8MB. Free memory was 160.8MB in the beginning and 150.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-02-10 23:55:45,749 INFO L158 Benchmark]: TraceAbstraction took 9797.31ms. Allocated memory was 189.8MB in the beginning and 306.2MB in the end (delta: 116.4MB). Free memory was 149.8MB in the beginning and 164.7MB in the end (delta: -14.9MB). Peak memory consumption was 102.5MB. Max. memory is 8.0GB. [2022-02-10 23:55:45,751 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 189.8MB. Free memory is still 155.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 159.73ms. Allocated memory is still 189.8MB. Free memory was 137.3MB in the beginning and 163.3MB in the end (delta: -26.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 21.15ms. Allocated memory is still 189.8MB. Free memory was 163.3MB in the beginning and 161.9MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.97ms. Allocated memory is still 189.8MB. Free memory was 161.9MB in the beginning and 160.8MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 212.88ms. Allocated memory is still 189.8MB. Free memory was 160.8MB in the beginning and 150.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 9797.31ms. Allocated memory was 189.8MB in the beginning and 306.2MB in the end (delta: 116.4MB). Free memory was 149.8MB in the beginning and 164.7MB in the end (delta: -14.9MB). Peak memory consumption was 102.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 46]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 83 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 9.7s, OverallIterations: 9, TraceHistogramMax: 5, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.1s, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4800 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4800 mSDsluCounter, 7547 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6732 mSDsCounter, 405 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1997 IncrementalHoareTripleChecker+Invalid, 2402 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 405 mSolverCounterUnsat, 1199 mSDtfsCounter, 1997 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1197 GetRequests, 859 SyntacticMatches, 2 SemanticMatches, 336 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13366 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7602occurred in iteration=8, InterpolantAutomatonStates: 278, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 9 MinimizatonAttempts, 5188 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 1083 NumberOfCodeBlocks, 1081 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 1444 ConstructedInterpolants, 0 QuantifiedInterpolants, 3124 SizeOfPredicates, 56 NumberOfNonLiveVariables, 994 ConjunctsInSsa, 68 ConjunctsInUnsatCore, 20 InterpolantComputations, 4 PerfectInterpolantSequences, 938/1164 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! [2022-02-10 23:55:45,788 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...