/usr/bin/java -Xmx16000000000 -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/svcomp/pthread/triangular-longer-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-17 22:37:01,162 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-17 22:37:01,164 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-17 22:37:01,215 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-17 22:37:01,266 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-17 22:37:01,267 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-17 22:37:01,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-17 22:37:01,268 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 [2022-01-17 22:37:01,300 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-17 22:37:01,300 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-17 22:37:01,300 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-17 22:37:01,300 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-17 22:37:01,301 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-17 22:37:01,301 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-17 22:37:01,301 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-17 22:37:01,302 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-17 22:37:01,302 INFO L138 SettingsManager]: * Use SBE=true [2022-01-17 22:37:01,302 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-17 22:37:01,302 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-17 22:37:01,303 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-17 22:37:01,304 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-17 22:37:01,304 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-17 22:37:01,304 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-17 22:37:01,304 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-17 22:37:01,304 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-17 22:37:01,304 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-17 22:37:01,304 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-17 22:37:01,304 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-17 22:37:01,304 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-17 22:37:01,305 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-17 22:37:01,305 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-17 22:37:01,305 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-17 22:37:01,305 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-17 22:37:01,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-17 22:37:01,305 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-17 22:37:01,306 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-17 22:37:01,306 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-17 22:37:01,306 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-17 22:37:01,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-17 22:37:01,307 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-17 22:37:01,307 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-17 22:37:01,307 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-17 22:37:01,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-17 22:37:01,550 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-17 22:37:01,553 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-17 22:37:01,554 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-17 22:37:01,555 INFO L275 PluginConnector]: CDTParser initialized [2022-01-17 22:37:01,556 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longer-2.i [2022-01-17 22:37:01,612 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/231a5e966/2acee86aea184bd0bed9ba110d60243f/FLAG62e4c4ac6 [2022-01-17 22:37:02,058 INFO L306 CDTParser]: Found 1 translation units. [2022-01-17 22:37:02,058 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-2.i [2022-01-17 22:37:02,072 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/231a5e966/2acee86aea184bd0bed9ba110d60243f/FLAG62e4c4ac6 [2022-01-17 22:37:02,087 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/231a5e966/2acee86aea184bd0bed9ba110d60243f [2022-01-17 22:37:02,089 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-17 22:37:02,091 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-17 22:37:02,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-17 22:37:02,093 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-17 22:37:02,096 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-17 22:37:02,097 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.01 10:37:02" (1/1) ... [2022-01-17 22:37:02,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c7064fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.01 10:37:02, skipping insertion in model container [2022-01-17 22:37:02,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.01 10:37:02" (1/1) ... [2022-01-17 22:37:02,104 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-17 22:37:02,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-17 22:37:02,396 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-2.i[30963,30976] [2022-01-17 22:37:02,399 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-17 22:37:02,408 INFO L203 MainTranslator]: Completed pre-run [2022-01-17 22:37:02,458 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-2.i[30963,30976] [2022-01-17 22:37:02,467 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-17 22:37:02,502 INFO L208 MainTranslator]: Completed translation [2022-01-17 22:37:02,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.01 10:37:02 WrapperNode [2022-01-17 22:37:02,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-17 22:37:02,504 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-17 22:37:02,504 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-17 22:37:02,504 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-17 22:37:02,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.01 10:37:02" (1/1) ... [2022-01-17 22:37:02,536 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.01 10:37:02" (1/1) ... [2022-01-17 22:37:02,552 INFO L137 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2022-01-17 22:37:02,552 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-17 22:37:02,553 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-17 22:37:02,553 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-17 22:37:02,553 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-17 22:37:02,560 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.01 10:37:02" (1/1) ... [2022-01-17 22:37:02,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.01 10:37:02" (1/1) ... [2022-01-17 22:37:02,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.01 10:37:02" (1/1) ... [2022-01-17 22:37:02,567 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.01 10:37:02" (1/1) ... [2022-01-17 22:37:02,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.01 10:37:02" (1/1) ... [2022-01-17 22:37:02,582 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.01 10:37:02" (1/1) ... [2022-01-17 22:37:02,583 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.01 10:37:02" (1/1) ... [2022-01-17 22:37:02,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-17 22:37:02,586 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-17 22:37:02,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-17 22:37:02,586 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-17 22:37:02,593 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.01 10:37:02" (1/1) ... [2022-01-17 22:37:02,599 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-17 22:37:02,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-17 22:37:02,623 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) [2022-01-17 22:37:02,625 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 [2022-01-17 22:37:02,650 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-01-17 22:37:02,650 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-01-17 22:37:02,650 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-01-17 22:37:02,651 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-01-17 22:37:02,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-17 22:37:02,651 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-17 22:37:02,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-17 22:37:02,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-17 22:37:02,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-17 22:37:02,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-17 22:37:02,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-17 22:37:02,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-17 22:37:02,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-17 22:37:02,656 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-17 22:37:02,802 INFO L234 CfgBuilder]: Building ICFG [2022-01-17 22:37:02,804 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-17 22:37:02,922 INFO L275 CfgBuilder]: Performing block encoding [2022-01-17 22:37:02,928 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-17 22:37:02,928 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-17 22:37:02,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.01 10:37:02 BoogieIcfgContainer [2022-01-17 22:37:02,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-17 22:37:02,931 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-17 22:37:02,931 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-17 22:37:02,934 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-17 22:37:02,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.01 10:37:02" (1/3) ... [2022-01-17 22:37:02,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5db71f7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.01 10:37:02, skipping insertion in model container [2022-01-17 22:37:02,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.01 10:37:02" (2/3) ... [2022-01-17 22:37:02,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5db71f7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.01 10:37:02, skipping insertion in model container [2022-01-17 22:37:02,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.01 10:37:02" (3/3) ... [2022-01-17 22:37:02,944 INFO L111 eAbstractionObserver]: Analyzing ICFG triangular-longer-2.i [2022-01-17 22:37:02,948 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-17 22:37:02,948 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-17 22:37:02,948 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-17 22:37:02,948 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-17 22:37:03,010 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,010 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,011 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,011 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,011 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,011 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,011 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,011 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,012 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,012 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,012 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,013 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,013 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,013 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,014 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,014 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,014 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,014 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,015 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,015 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,015 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,015 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,015 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,015 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,016 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,016 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,016 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,016 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,017 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,017 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,017 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,017 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,017 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,017 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,017 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,018 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,018 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,018 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,018 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,019 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,030 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,030 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,030 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,030 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,031 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,031 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,031 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,031 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,032 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,032 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,032 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,032 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,032 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,032 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,033 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,033 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,035 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,036 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,036 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,036 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,036 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,041 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,044 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,044 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,044 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,044 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,044 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,045 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-17 22:37:03,045 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-17 22:37:03,101 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-17 22:37:03,112 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 [2022-01-17 22:37:03,112 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-17 22:37:03,124 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 72 places, 70 transitions, 150 flow [2022-01-17 22:37:03,206 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 783 states, 782 states have (on average 2.9271099744245523) internal successors, (2289), 782 states have internal predecessors, (2289), 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) [2022-01-17 22:37:03,209 INFO L276 IsEmpty]: Start isEmpty. Operand has 783 states, 782 states have (on average 2.9271099744245523) internal successors, (2289), 782 states have internal predecessors, (2289), 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) [2022-01-17 22:37:03,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-17 22:37:03,222 INFO L506 BasicCegarLoop]: Found error trace [2022-01-17 22:37:03,223 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-17 22:37:03,223 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-17 22:37:03,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-17 22:37:03,231 INFO L85 PathProgramCache]: Analyzing trace with hash 398220865, now seen corresponding path program 1 times [2022-01-17 22:37:03,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-17 22:37:03,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901225564] [2022-01-17 22:37:03,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-17 22:37:03,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-17 22:37:03,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-17 22:37:03,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-17 22:37:03,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-17 22:37:03,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901225564] [2022-01-17 22:37:03,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901225564] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-17 22:37:03,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-17 22:37:03,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-17 22:37:03,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137439015] [2022-01-17 22:37:03,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-17 22:37:03,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-17 22:37:03,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-17 22:37:03,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-17 22:37:03,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-17 22:37:03,727 INFO L87 Difference]: Start difference. First operand has 783 states, 782 states have (on average 2.9271099744245523) internal successors, (2289), 782 states have internal predecessors, (2289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 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) [2022-01-17 22:37:03,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-17 22:37:03,916 INFO L93 Difference]: Finished difference Result 1542 states and 4129 transitions. [2022-01-17 22:37:03,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-17 22:37:03,924 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 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 35 [2022-01-17 22:37:03,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-17 22:37:03,950 INFO L225 Difference]: With dead ends: 1542 [2022-01-17 22:37:03,950 INFO L226 Difference]: Without dead ends: 1245 [2022-01-17 22:37:03,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-01-17 22:37:03,956 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 156 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-17 22:37:03,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 303 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-17 22:37:03,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2022-01-17 22:37:04,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 945. [2022-01-17 22:37:04,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 945 states, 944 states have (on average 2.702330508474576) internal successors, (2551), 944 states have internal predecessors, (2551), 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) [2022-01-17 22:37:04,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 2551 transitions. [2022-01-17 22:37:04,067 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 2551 transitions. Word has length 35 [2022-01-17 22:37:04,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-17 22:37:04,067 INFO L470 AbstractCegarLoop]: Abstraction has 945 states and 2551 transitions. [2022-01-17 22:37:04,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 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) [2022-01-17 22:37:04,067 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 2551 transitions. [2022-01-17 22:37:04,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-17 22:37:04,075 INFO L506 BasicCegarLoop]: Found error trace [2022-01-17 22:37:04,075 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-17 22:37:04,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-17 22:37:04,075 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-17 22:37:04,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-17 22:37:04,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1832706688, now seen corresponding path program 1 times [2022-01-17 22:37:04,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-17 22:37:04,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696635599] [2022-01-17 22:37:04,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-17 22:37:04,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-17 22:37:04,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-17 22:37:04,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-17 22:37:04,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-17 22:37:04,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696635599] [2022-01-17 22:37:04,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696635599] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-17 22:37:04,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-17 22:37:04,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-17 22:37:04,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598675417] [2022-01-17 22:37:04,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-17 22:37:04,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-17 22:37:04,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-17 22:37:04,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-17 22:37:04,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-17 22:37:04,212 INFO L87 Difference]: Start difference. First operand 945 states and 2551 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 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) [2022-01-17 22:37:04,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-17 22:37:04,308 INFO L93 Difference]: Finished difference Result 1197 states and 3183 transitions. [2022-01-17 22:37:04,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-17 22:37:04,309 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 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 [2022-01-17 22:37:04,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-17 22:37:04,316 INFO L225 Difference]: With dead ends: 1197 [2022-01-17 22:37:04,316 INFO L226 Difference]: Without dead ends: 945 [2022-01-17 22:37:04,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-17 22:37:04,321 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 81 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-17 22:37:04,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 357 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-17 22:37:04,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2022-01-17 22:37:04,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 803. [2022-01-17 22:37:04,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 802 states have (on average 2.7219451371571073) internal successors, (2183), 802 states have internal predecessors, (2183), 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) [2022-01-17 22:37:04,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 2183 transitions. [2022-01-17 22:37:04,362 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 2183 transitions. Word has length 39 [2022-01-17 22:37:04,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-17 22:37:04,364 INFO L470 AbstractCegarLoop]: Abstraction has 803 states and 2183 transitions. [2022-01-17 22:37:04,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 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) [2022-01-17 22:37:04,364 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 2183 transitions. [2022-01-17 22:37:04,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-17 22:37:04,367 INFO L506 BasicCegarLoop]: Found error trace [2022-01-17 22:37:04,367 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-17 22:37:04,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-17 22:37:04,368 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-17 22:37:04,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-17 22:37:04,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1559123106, now seen corresponding path program 1 times [2022-01-17 22:37:04,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-17 22:37:04,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118184791] [2022-01-17 22:37:04,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-17 22:37:04,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-17 22:37:04,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-17 22:37:04,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-17 22:37:04,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-17 22:37:04,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118184791] [2022-01-17 22:37:04,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118184791] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-17 22:37:04,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-17 22:37:04,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-17 22:37:04,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272506326] [2022-01-17 22:37:04,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-17 22:37:04,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-17 22:37:04,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-17 22:37:04,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-17 22:37:04,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-17 22:37:04,498 INFO L87 Difference]: Start difference. First operand 803 states and 2183 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 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) [2022-01-17 22:37:04,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-17 22:37:04,644 INFO L93 Difference]: Finished difference Result 1945 states and 5271 transitions. [2022-01-17 22:37:04,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-17 22:37:04,645 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 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 [2022-01-17 22:37:04,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-17 22:37:04,653 INFO L225 Difference]: With dead ends: 1945 [2022-01-17 22:37:04,653 INFO L226 Difference]: Without dead ends: 1521 [2022-01-17 22:37:04,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-17 22:37:04,660 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 130 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-17 22:37:04,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 383 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-17 22:37:04,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1521 states. [2022-01-17 22:37:04,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1521 to 1021. [2022-01-17 22:37:04,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1021 states, 1020 states have (on average 2.7) internal successors, (2754), 1020 states have internal predecessors, (2754), 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) [2022-01-17 22:37:04,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 2754 transitions. [2022-01-17 22:37:04,701 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 2754 transitions. Word has length 39 [2022-01-17 22:37:04,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-17 22:37:04,701 INFO L470 AbstractCegarLoop]: Abstraction has 1021 states and 2754 transitions. [2022-01-17 22:37:04,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 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) [2022-01-17 22:37:04,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 2754 transitions. [2022-01-17 22:37:04,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-17 22:37:04,703 INFO L506 BasicCegarLoop]: Found error trace [2022-01-17 22:37:04,703 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-17 22:37:04,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-17 22:37:04,703 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-17 22:37:04,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-17 22:37:04,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1227227950, now seen corresponding path program 2 times [2022-01-17 22:37:04,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-17 22:37:04,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373059913] [2022-01-17 22:37:04,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-17 22:37:04,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-17 22:37:04,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-17 22:37:04,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-17 22:37:04,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-17 22:37:04,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373059913] [2022-01-17 22:37:04,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373059913] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-17 22:37:04,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-17 22:37:04,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-17 22:37:04,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157337891] [2022-01-17 22:37:04,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-17 22:37:04,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-17 22:37:04,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-17 22:37:04,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-17 22:37:04,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-17 22:37:04,821 INFO L87 Difference]: Start difference. First operand 1021 states and 2754 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 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) [2022-01-17 22:37:04,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-17 22:37:04,896 INFO L93 Difference]: Finished difference Result 1341 states and 3466 transitions. [2022-01-17 22:37:04,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-17 22:37:04,896 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 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 [2022-01-17 22:37:04,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-17 22:37:04,903 INFO L225 Difference]: With dead ends: 1341 [2022-01-17 22:37:04,903 INFO L226 Difference]: Without dead ends: 1031 [2022-01-17 22:37:04,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-17 22:37:04,908 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 107 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-17 22:37:04,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 331 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-17 22:37:04,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2022-01-17 22:37:04,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 879. [2022-01-17 22:37:04,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 878 states have (on average 2.7004555808656034) internal successors, (2371), 878 states have internal predecessors, (2371), 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) [2022-01-17 22:37:04,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 2371 transitions. [2022-01-17 22:37:04,937 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 2371 transitions. Word has length 39 [2022-01-17 22:37:04,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-17 22:37:04,938 INFO L470 AbstractCegarLoop]: Abstraction has 879 states and 2371 transitions. [2022-01-17 22:37:04,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 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) [2022-01-17 22:37:04,938 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 2371 transitions. [2022-01-17 22:37:04,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-17 22:37:04,940 INFO L506 BasicCegarLoop]: Found error trace [2022-01-17 22:37:04,940 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-17 22:37:04,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-17 22:37:04,940 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-17 22:37:04,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-17 22:37:04,941 INFO L85 PathProgramCache]: Analyzing trace with hash -2144864227, now seen corresponding path program 1 times [2022-01-17 22:37:04,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-17 22:37:04,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019583576] [2022-01-17 22:37:04,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-17 22:37:04,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-17 22:37:04,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-17 22:37:05,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-17 22:37:05,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-17 22:37:05,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019583576] [2022-01-17 22:37:05,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019583576] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-17 22:37:05,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-17 22:37:05,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-17 22:37:05,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051925735] [2022-01-17 22:37:05,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-17 22:37:05,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-17 22:37:05,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-17 22:37:05,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-17 22:37:05,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-17 22:37:05,054 INFO L87 Difference]: Start difference. First operand 879 states and 2371 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-17 22:37:05,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-17 22:37:05,178 INFO L93 Difference]: Finished difference Result 1527 states and 4059 transitions. [2022-01-17 22:37:05,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-17 22:37:05,178 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-01-17 22:37:05,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-17 22:37:05,183 INFO L225 Difference]: With dead ends: 1527 [2022-01-17 22:37:05,183 INFO L226 Difference]: Without dead ends: 1134 [2022-01-17 22:37:05,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-01-17 22:37:05,184 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 204 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-17 22:37:05,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 374 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-17 22:37:05,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2022-01-17 22:37:05,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 1036. [2022-01-17 22:37:05,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1036 states, 1035 states have (on average 2.7304347826086954) internal successors, (2826), 1035 states have internal predecessors, (2826), 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) [2022-01-17 22:37:05,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 2826 transitions. [2022-01-17 22:37:05,210 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 2826 transitions. Word has length 43 [2022-01-17 22:37:05,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-17 22:37:05,210 INFO L470 AbstractCegarLoop]: Abstraction has 1036 states and 2826 transitions. [2022-01-17 22:37:05,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-17 22:37:05,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 2826 transitions. [2022-01-17 22:37:05,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-17 22:37:05,212 INFO L506 BasicCegarLoop]: Found error trace [2022-01-17 22:37:05,212 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-17 22:37:05,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-17 22:37:05,213 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-17 22:37:05,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-17 22:37:05,213 INFO L85 PathProgramCache]: Analyzing trace with hash -2080476017, now seen corresponding path program 1 times [2022-01-17 22:37:05,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-17 22:37:05,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761307885] [2022-01-17 22:37:05,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-17 22:37:05,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-17 22:37:05,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-17 22:37:05,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-17 22:37:05,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-17 22:37:05,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761307885] [2022-01-17 22:37:05,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761307885] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-17 22:37:05,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912933141] [2022-01-17 22:37:05,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-17 22:37:05,298 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-17 22:37:05,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-17 22:37:05,303 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) [2022-01-17 22:37:05,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-17 22:37:05,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-17 22:37:05,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-17 22:37:05,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-17 22:37:05,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-17 22:37:05,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-17 22:37:05,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-17 22:37:05,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912933141] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-17 22:37:05,775 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-17 22:37:05,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-01-17 22:37:05,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008362554] [2022-01-17 22:37:05,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-17 22:37:05,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-17 22:37:05,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-17 22:37:05,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-17 22:37:05,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-01-17 22:37:05,777 INFO L87 Difference]: Start difference. First operand 1036 states and 2826 transitions. Second operand has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 13 states have internal predecessors, (86), 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) [2022-01-17 22:37:06,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-17 22:37:06,043 INFO L93 Difference]: Finished difference Result 2380 states and 6538 transitions. [2022-01-17 22:37:06,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-17 22:37:06,043 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 13 states have internal predecessors, (86), 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 48 [2022-01-17 22:37:06,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-17 22:37:06,051 INFO L225 Difference]: With dead ends: 2380 [2022-01-17 22:37:06,051 INFO L226 Difference]: Without dead ends: 1391 [2022-01-17 22:37:06,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=227, Invalid=529, Unknown=0, NotChecked=0, Total=756 [2022-01-17 22:37:06,053 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 454 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-17 22:37:06,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [454 Valid, 661 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-17 22:37:06,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2022-01-17 22:37:06,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1225. [2022-01-17 22:37:06,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1225 states, 1224 states have (on average 2.732843137254902) internal successors, (3345), 1224 states have internal predecessors, (3345), 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) [2022-01-17 22:37:06,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 3345 transitions. [2022-01-17 22:37:06,088 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 3345 transitions. Word has length 48 [2022-01-17 22:37:06,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-17 22:37:06,089 INFO L470 AbstractCegarLoop]: Abstraction has 1225 states and 3345 transitions. [2022-01-17 22:37:06,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 13 states have internal predecessors, (86), 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) [2022-01-17 22:37:06,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 3345 transitions. [2022-01-17 22:37:06,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-17 22:37:06,092 INFO L506 BasicCegarLoop]: Found error trace [2022-01-17 22:37:06,092 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-17 22:37:06,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-17 22:37:06,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-01-17 22:37:06,304 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-17 22:37:06,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-17 22:37:06,304 INFO L85 PathProgramCache]: Analyzing trace with hash 2080275648, now seen corresponding path program 1 times [2022-01-17 22:37:06,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-17 22:37:06,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367250771] [2022-01-17 22:37:06,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-17 22:37:06,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-17 22:37:06,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-17 22:37:06,421 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-17 22:37:06,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-17 22:37:06,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367250771] [2022-01-17 22:37:06,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367250771] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-17 22:37:06,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132449559] [2022-01-17 22:37:06,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-17 22:37:06,422 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-17 22:37:06,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-17 22:37:06,423 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) [2022-01-17 22:37:06,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-17 22:37:06,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-17 22:37:06,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-17 22:37:06,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-17 22:37:06,660 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-17 22:37:06,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-17 22:37:06,873 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-17 22:37:06,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132449559] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-17 22:37:06,873 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-17 22:37:06,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 17 [2022-01-17 22:37:06,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812741354] [2022-01-17 22:37:06,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-17 22:37:06,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-17 22:37:06,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-17 22:37:06,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-17 22:37:06,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2022-01-17 22:37:06,875 INFO L87 Difference]: Start difference. First operand 1225 states and 3345 transitions. Second operand has 17 states, 17 states have (on average 6.882352941176471) internal successors, (117), 17 states have internal predecessors, (117), 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) [2022-01-17 22:37:07,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-17 22:37:07,503 INFO L93 Difference]: Finished difference Result 5394 states and 14706 transitions. [2022-01-17 22:37:07,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-17 22:37:07,504 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.882352941176471) internal successors, (117), 17 states have internal predecessors, (117), 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 [2022-01-17 22:37:07,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-17 22:37:07,521 INFO L225 Difference]: With dead ends: 5394 [2022-01-17 22:37:07,521 INFO L226 Difference]: Without dead ends: 3609 [2022-01-17 22:37:07,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 117 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 579 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=603, Invalid=1559, Unknown=0, NotChecked=0, Total=2162 [2022-01-17 22:37:07,523 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 710 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-17 22:37:07,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [710 Valid, 1117 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-17 22:37:07,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3609 states. [2022-01-17 22:37:07,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3609 to 2319. [2022-01-17 22:37:07,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2319 states, 2318 states have (on average 2.7791199309749786) internal successors, (6442), 2318 states have internal predecessors, (6442), 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) [2022-01-17 22:37:07,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2319 states to 2319 states and 6442 transitions. [2022-01-17 22:37:07,598 INFO L78 Accepts]: Start accepts. Automaton has 2319 states and 6442 transitions. Word has length 63 [2022-01-17 22:37:07,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-17 22:37:07,598 INFO L470 AbstractCegarLoop]: Abstraction has 2319 states and 6442 transitions. [2022-01-17 22:37:07,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.882352941176471) internal successors, (117), 17 states have internal predecessors, (117), 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) [2022-01-17 22:37:07,598 INFO L276 IsEmpty]: Start isEmpty. Operand 2319 states and 6442 transitions. [2022-01-17 22:37:07,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-17 22:37:07,603 INFO L506 BasicCegarLoop]: Found error trace [2022-01-17 22:37:07,603 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 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] [2022-01-17 22:37:07,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-17 22:37:07,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-01-17 22:37:07,820 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-17 22:37:07,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-17 22:37:07,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1595975090, now seen corresponding path program 2 times [2022-01-17 22:37:07,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-17 22:37:07,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181930940] [2022-01-17 22:37:07,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-17 22:37:07,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-17 22:37:07,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-17 22:37:07,940 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-17 22:37:07,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-17 22:37:07,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181930940] [2022-01-17 22:37:07,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181930940] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-17 22:37:07,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726045911] [2022-01-17 22:37:07,941 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-17 22:37:07,941 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-17 22:37:07,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-17 22:37:07,942 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) [2022-01-17 22:37:07,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-17 22:37:08,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-17 22:37:08,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-17 22:37:08,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-17 22:37:08,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-17 22:37:08,217 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-17 22:37:08,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-17 22:37:08,492 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-17 22:37:08,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726045911] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-17 22:37:08,493 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-17 22:37:08,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 25 [2022-01-17 22:37:08,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987112491] [2022-01-17 22:37:08,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-17 22:37:08,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-17 22:37:08,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-17 22:37:08,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-17 22:37:08,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2022-01-17 22:37:08,495 INFO L87 Difference]: Start difference. First operand 2319 states and 6442 transitions. Second operand has 25 states, 25 states have (on average 5.84) internal successors, (146), 25 states have internal predecessors, (146), 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) [2022-01-17 22:37:09,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-17 22:37:09,695 INFO L93 Difference]: Finished difference Result 8273 states and 22742 transitions. [2022-01-17 22:37:09,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-17 22:37:09,695 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.84) internal successors, (146), 25 states have internal predecessors, (146), 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 78 [2022-01-17 22:37:09,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-17 22:37:09,731 INFO L225 Difference]: With dead ends: 8273 [2022-01-17 22:37:09,733 INFO L226 Difference]: Without dead ends: 5284 [2022-01-17 22:37:09,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1729 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1496, Invalid=3906, Unknown=0, NotChecked=0, Total=5402 [2022-01-17 22:37:09,735 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 1736 mSDsluCounter, 1329 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1736 SdHoareTripleChecker+Valid, 1446 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-17 22:37:09,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1736 Valid, 1446 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-17 22:37:09,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5284 states. [2022-01-17 22:37:09,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5284 to 2425. [2022-01-17 22:37:09,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2425 states, 2424 states have (on average 2.741336633663366) internal successors, (6645), 2424 states have internal predecessors, (6645), 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) [2022-01-17 22:37:09,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2425 states to 2425 states and 6645 transitions. [2022-01-17 22:37:09,807 INFO L78 Accepts]: Start accepts. Automaton has 2425 states and 6645 transitions. Word has length 78 [2022-01-17 22:37:09,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-17 22:37:09,808 INFO L470 AbstractCegarLoop]: Abstraction has 2425 states and 6645 transitions. [2022-01-17 22:37:09,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.84) internal successors, (146), 25 states have internal predecessors, (146), 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) [2022-01-17 22:37:09,808 INFO L276 IsEmpty]: Start isEmpty. Operand 2425 states and 6645 transitions. [2022-01-17 22:37:09,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-17 22:37:09,812 INFO L506 BasicCegarLoop]: Found error trace [2022-01-17 22:37:09,813 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-17 22:37:09,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-17 22:37:10,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-17 22:37:10,035 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-17 22:37:10,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-17 22:37:10,036 INFO L85 PathProgramCache]: Analyzing trace with hash 396285664, now seen corresponding path program 3 times [2022-01-17 22:37:10,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-17 22:37:10,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700780978] [2022-01-17 22:37:10,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-17 22:37:10,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-17 22:37:10,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-17 22:37:10,313 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 316 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-17 22:37:10,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-17 22:37:10,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700780978] [2022-01-17 22:37:10,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700780978] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-17 22:37:10,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368148020] [2022-01-17 22:37:10,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-17 22:37:10,314 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-17 22:37:10,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-17 22:37:10,316 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) [2022-01-17 22:37:10,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-17 22:37:10,404 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-01-17 22:37:10,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-17 22:37:10,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-17 22:37:10,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-17 22:37:10,637 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 316 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-17 22:37:10,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-17 22:37:11,125 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 316 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-17 22:37:11,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368148020] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-17 22:37:11,125 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-17 22:37:11,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 42 [2022-01-17 22:37:11,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236643621] [2022-01-17 22:37:11,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-17 22:37:11,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-17 22:37:11,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-17 22:37:11,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-17 22:37:11,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=368, Invalid=1354, Unknown=0, NotChecked=0, Total=1722 [2022-01-17 22:37:11,128 INFO L87 Difference]: Start difference. First operand 2425 states and 6645 transitions. Second operand has 42 states, 42 states have (on average 5.690476190476191) internal successors, (239), 42 states have internal predecessors, (239), 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) [2022-01-17 22:37:12,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-17 22:37:12,406 INFO L93 Difference]: Finished difference Result 7921 states and 21720 transitions. [2022-01-17 22:37:12,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-17 22:37:12,406 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 5.690476190476191) internal successors, (239), 42 states have internal predecessors, (239), 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 123 [2022-01-17 22:37:12,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-17 22:37:12,430 INFO L225 Difference]: With dead ends: 7921 [2022-01-17 22:37:12,430 INFO L226 Difference]: Without dead ends: 6534 [2022-01-17 22:37:12,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2379 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2144, Invalid=6046, Unknown=0, NotChecked=0, Total=8190 [2022-01-17 22:37:12,433 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 1901 mSDsluCounter, 1437 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1901 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-17 22:37:12,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1901 Valid, 1536 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-17 22:37:12,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6534 states. [2022-01-17 22:37:12,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6534 to 4219. [2022-01-17 22:37:12,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4219 states, 4218 states have (on average 2.8193456614509245) internal successors, (11892), 4218 states have internal predecessors, (11892), 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) [2022-01-17 22:37:12,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4219 states to 4219 states and 11892 transitions. [2022-01-17 22:37:12,555 INFO L78 Accepts]: Start accepts. Automaton has 4219 states and 11892 transitions. Word has length 123 [2022-01-17 22:37:12,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-17 22:37:12,555 INFO L470 AbstractCegarLoop]: Abstraction has 4219 states and 11892 transitions. [2022-01-17 22:37:12,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 5.690476190476191) internal successors, (239), 42 states have internal predecessors, (239), 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) [2022-01-17 22:37:12,556 INFO L276 IsEmpty]: Start isEmpty. Operand 4219 states and 11892 transitions. [2022-01-17 22:37:12,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-17 22:37:12,565 INFO L506 BasicCegarLoop]: Found error trace [2022-01-17 22:37:12,565 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-17 22:37:12,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-17 22:37:12,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-17 22:37:12,789 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-17 22:37:12,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-17 22:37:12,789 INFO L85 PathProgramCache]: Analyzing trace with hash 512857692, now seen corresponding path program 4 times [2022-01-17 22:37:12,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-17 22:37:12,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645335776] [2022-01-17 22:37:12,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-17 22:37:12,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-17 22:37:12,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-17 22:37:13,059 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 395 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-17 22:37:13,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-17 22:37:13,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645335776] [2022-01-17 22:37:13,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645335776] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-17 22:37:13,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319522223] [2022-01-17 22:37:13,060 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-17 22:37:13,060 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-17 22:37:13,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-17 22:37:13,061 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) [2022-01-17 22:37:13,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-17 22:37:13,141 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-17 22:37:13,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-17 22:37:13,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-17 22:37:13,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-17 22:37:13,457 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 395 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-17 22:37:13,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-17 22:37:13,730 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 395 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-17 22:37:13,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319522223] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-17 22:37:13,730 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-17 22:37:13,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 26 [2022-01-17 22:37:13,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644882587] [2022-01-17 22:37:13,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-17 22:37:13,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-17 22:37:13,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-17 22:37:13,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-17 22:37:13,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=516, Unknown=0, NotChecked=0, Total=650 [2022-01-17 22:37:13,732 INFO L87 Difference]: Start difference. First operand 4219 states and 11892 transitions. Second operand has 26 states, 26 states have (on average 5.269230769230769) internal successors, (137), 26 states have internal predecessors, (137), 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) [2022-01-17 22:37:14,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-17 22:37:14,552 INFO L93 Difference]: Finished difference Result 5798 states and 16011 transitions. [2022-01-17 22:37:14,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-17 22:37:14,552 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.269230769230769) internal successors, (137), 26 states have internal predecessors, (137), 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 133 [2022-01-17 22:37:14,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-17 22:37:14,564 INFO L225 Difference]: With dead ends: 5798 [2022-01-17 22:37:14,565 INFO L226 Difference]: Without dead ends: 5529 [2022-01-17 22:37:14,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 263 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1023 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1203, Invalid=2829, Unknown=0, NotChecked=0, Total=4032 [2022-01-17 22:37:14,567 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 1131 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1131 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-17 22:37:14,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1131 Valid, 874 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-17 22:37:14,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5529 states. [2022-01-17 22:37:14,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5529 to 4219. [2022-01-17 22:37:14,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4219 states, 4218 states have (on average 2.8193456614509245) internal successors, (11892), 4218 states have internal predecessors, (11892), 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) [2022-01-17 22:37:14,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4219 states to 4219 states and 11892 transitions. [2022-01-17 22:37:14,663 INFO L78 Accepts]: Start accepts. Automaton has 4219 states and 11892 transitions. Word has length 133 [2022-01-17 22:37:14,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-17 22:37:14,663 INFO L470 AbstractCegarLoop]: Abstraction has 4219 states and 11892 transitions. [2022-01-17 22:37:14,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.269230769230769) internal successors, (137), 26 states have internal predecessors, (137), 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) [2022-01-17 22:37:14,663 INFO L276 IsEmpty]: Start isEmpty. Operand 4219 states and 11892 transitions. [2022-01-17 22:37:14,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-17 22:37:14,672 INFO L506 BasicCegarLoop]: Found error trace [2022-01-17 22:37:14,672 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-17 22:37:14,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-17 22:37:14,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-01-17 22:37:14,902 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-17 22:37:14,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-17 22:37:14,902 INFO L85 PathProgramCache]: Analyzing trace with hash -198341816, now seen corresponding path program 5 times [2022-01-17 22:37:14,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-17 22:37:14,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710727730] [2022-01-17 22:37:14,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-17 22:37:14,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-17 22:37:14,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-17 22:37:14,925 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-17 22:37:14,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-17 22:37:15,001 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-17 22:37:15,003 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-17 22:37:15,003 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-17 22:37:15,005 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-17 22:37:15,005 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-17 22:37:15,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-17 22:37:15,008 INFO L732 BasicCegarLoop]: Path program histogram: [5, 2, 1, 1, 1, 1] [2022-01-17 22:37:15,012 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-17 22:37:15,012 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-17 22:37:15,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.01 10:37:15 BasicIcfg [2022-01-17 22:37:15,127 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-17 22:37:15,127 INFO L158 Benchmark]: Toolchain (without parser) took 13036.15ms. Allocated memory was 341.8MB in the beginning and 427.8MB in the end (delta: 86.0MB). Free memory was 287.4MB in the beginning and 220.0MB in the end (delta: 67.4MB). Peak memory consumption was 157.1MB. Max. memory is 16.0GB. [2022-01-17 22:37:15,127 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 341.8MB. Free memory is still 305.0MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-17 22:37:15,127 INFO L158 Benchmark]: CACSL2BoogieTranslator took 409.89ms. Allocated memory is still 341.8MB. Free memory was 287.2MB in the beginning and 306.5MB in the end (delta: -19.3MB). Peak memory consumption was 18.2MB. Max. memory is 16.0GB. [2022-01-17 22:37:15,128 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.42ms. Allocated memory is still 341.8MB. Free memory was 306.5MB in the beginning and 304.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-17 22:37:15,128 INFO L158 Benchmark]: Boogie Preprocessor took 32.46ms. Allocated memory is still 341.8MB. Free memory was 304.4MB in the beginning and 302.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-17 22:37:15,128 INFO L158 Benchmark]: RCFGBuilder took 344.22ms. Allocated memory is still 341.8MB. Free memory was 302.3MB in the beginning and 290.8MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2022-01-17 22:37:15,128 INFO L158 Benchmark]: TraceAbstraction took 12195.58ms. Allocated memory was 341.8MB in the beginning and 427.8MB in the end (delta: 86.0MB). Free memory was 289.7MB in the beginning and 220.0MB in the end (delta: 69.7MB). Peak memory consumption was 159.9MB. Max. memory is 16.0GB. [2022-01-17 22:37:15,130 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 341.8MB. Free memory is still 305.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 409.89ms. Allocated memory is still 341.8MB. Free memory was 287.2MB in the beginning and 306.5MB in the end (delta: -19.3MB). Peak memory consumption was 18.2MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 48.42ms. Allocated memory is still 341.8MB. Free memory was 306.5MB in the beginning and 304.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 32.46ms. Allocated memory is still 341.8MB. Free memory was 304.4MB in the beginning and 302.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 344.22ms. Allocated memory is still 341.8MB. Free memory was 302.3MB in the beginning and 290.8MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 12195.58ms. Allocated memory was 341.8MB in the beginning and 427.8MB in the end (delta: 86.0MB). Free memory was 289.7MB in the beginning and 220.0MB in the end (delta: 69.7MB). Peak memory consumption was 159.9MB. Max. memory is 16.0GB. * 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 - CounterExampleResult [Line: 722]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L694] 0 int i = 3, j = 6; VAL [i=3, j=6] [L712] 0 pthread_t id1, id2; VAL [\old(argc)=49, argc=49, argv={51:50}, argv={51:50}, i=3, id1={5:0}, id2={3:0}, j=6] [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [\old(argc)=49, arg={0:0}, argc=49, argv={51:50}, argv={51:50}, i=3, id1={5:0}, id2={3:0}, j=6, pthread_create(&id1, ((void *)0), t1, ((void *)0))=6] [L696] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L696] COND TRUE 1 k < 10 VAL [arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, i=7, j=6, k=0] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, i=7, j=6, k=1, k++=0] [L696] COND TRUE 1 k < 10 VAL [arg={0:0}, arg={0:0}, i=7, j=6, k=1] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={51:50}, argv={51:50}, i=7, id1={5:0}, id2={3:0}, j=6, k=1, pthread_create(&id2, ((void *)0), t2, ((void *)0))=7] [L704] 2 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L704] COND TRUE 2 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=0, k=1] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L704] COND TRUE 2 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=1] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=1, k=1] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=1] [L704] COND TRUE 2 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=1] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L696] COND TRUE 1 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=2] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=2, k=2] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=2] [L704] COND TRUE 2 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=2] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L696] COND TRUE 1 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=3] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=3, k=3] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=3, k=4] [L704] COND TRUE 2 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=3, k=4] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L696] COND TRUE 1 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=4] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=4] [L704] COND TRUE 2 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=5] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L696] COND TRUE 1 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=5] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=5, k=5] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=5] [L704] COND TRUE 2 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=5, k=6] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L696] COND TRUE 1 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=6] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=6, k=6] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=6] [L704] COND TRUE 2 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=6, k=7] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L696] COND TRUE 1 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=7] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=7, k=7] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=7] [L704] COND TRUE 2 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=7, k=8] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L696] COND TRUE 1 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=8] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=8, k=8] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=8, k=9] [L704] COND TRUE 2 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=8] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L696] COND TRUE 1 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=9, k=9] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=9, k=9] [L716] 0 int condI = i >= (2*10 +6); VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={51:50}, argv={51:50}, condI=0, i=25, id1={5:0}, id2={3:0}, j=26, k=9, k=9] [L719] 0 int condJ = j >= (2*10 +6); VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={51:50}, argv={51:50}, condI=0, condJ=1, i=25, id1={5:0}, id2={3:0}, j=26, k=9, k=9] [L721] COND TRUE 0 condI || condJ VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={51:50}, argv={51:50}, condI=0, condJ=1, i=25, id1={5:0}, id2={3:0}, j=26, k=9, k=9] [L722] 0 reach_error() VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={51:50}, argv={51:50}, condI=0, condJ=1, i=25, id1={5:0}, id2={3:0}, j=26, k=9, k=9] - UnprovableResult [Line: 713]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 88 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 11.9s, OverallIterations: 11, TraceHistogramMax: 10, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.1s, AutomataDifference: 5.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6610 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6610 mSDsluCounter, 7382 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6504 mSDsCounter, 672 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1284 IncrementalHoareTripleChecker+Invalid, 1956 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 672 mSolverCounterUnsat, 960 mSDtfsCounter, 1284 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1191 GetRequests, 850 SyntacticMatches, 5 SemanticMatches, 336 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5906 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4219occurred in iteration=9, InterpolantAutomatonStates: 255, 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, 10 MinimizatonAttempts, 9132 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 1218 NumberOfCodeBlocks, 1218 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 1510 ConstructedInterpolants, 0 QuantifiedInterpolants, 4591 SizeOfPredicates, 58 NumberOfNonLiveVariables, 1008 ConjunctsInSsa, 84 ConjunctsInUnsatCore, 20 InterpolantComputations, 5 PerfectInterpolantSequences, 9/2391 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-01-17 22:37:15,163 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...