./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl/collitem-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8c2bbc92 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl/collitem-subst.wvr.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fd97af539c682efd984a2e001659a4e5d44b7fdb ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-03 11:56:31,795 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-03 11:56:31,798 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-03 11:56:31,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-03 11:56:31,839 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-03 11:56:31,840 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-03 11:56:31,842 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-03 11:56:31,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-03 11:56:31,847 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-03 11:56:31,849 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-03 11:56:31,850 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-03 11:56:31,852 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-03 11:56:31,852 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-03 11:56:31,854 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-03 11:56:31,856 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-03 11:56:31,857 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-03 11:56:31,859 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-03 11:56:31,860 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-03 11:56:31,862 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-03 11:56:31,865 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-03 11:56:31,867 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-03 11:56:31,869 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-03 11:56:31,870 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-03 11:56:31,871 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-03 11:56:31,875 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-03 11:56:31,876 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-03 11:56:31,879 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-03 11:56:31,880 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-03 11:56:31,881 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-03 11:56:31,885 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-03 11:56:31,885 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-03 11:56:31,886 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-03 11:56:31,890 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-03 11:56:31,891 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-03 11:56:31,893 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-03 11:56:31,894 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-03 11:56:31,896 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-03 11:56:31,897 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-03 11:56:31,897 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-03 11:56:31,898 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-03 11:56:31,900 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-03 11:56:31,901 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-03 11:56:31,958 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-03 11:56:31,958 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-03 11:56:31,959 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-03 11:56:31,960 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-03 11:56:31,963 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-03 11:56:31,963 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-03 11:56:31,963 INFO L138 SettingsManager]: * Use SBE=true [2021-10-03 11:56:31,964 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-03 11:56:31,964 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-03 11:56:31,964 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-03 11:56:31,966 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-03 11:56:31,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-03 11:56:31,967 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-03 11:56:31,967 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-03 11:56:31,967 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-03 11:56:31,968 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-03 11:56:31,968 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-03 11:56:31,968 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-03 11:56:31,968 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-03 11:56:31,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-03 11:56:31,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-03 11:56:31,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-03 11:56:31,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-03 11:56:31,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-03 11:56:31,971 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-03 11:56:31,971 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-03 11:56:31,971 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-03 11:56:31,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-03 11:56:31,972 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-03 11:56:31,972 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-03 11:56:31,972 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd97af539c682efd984a2e001659a4e5d44b7fdb [2021-10-03 11:56:32,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-03 11:56:32,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-03 11:56:32,406 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-03 11:56:32,408 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-03 11:56:32,409 INFO L275 PluginConnector]: CDTParser initialized [2021-10-03 11:56:32,410 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl/collitem-subst.wvr.c [2021-10-03 11:56:32,487 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e50d970d/f677ec4180bf4efca76b47e3c8a5d6e9/FLAGd014c3f3b [2021-10-03 11:56:33,174 INFO L306 CDTParser]: Found 1 translation units. [2021-10-03 11:56:33,175 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/chl/collitem-subst.wvr.c [2021-10-03 11:56:33,175 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-10-03 11:56:33,176 WARN L117 ultiparseSymbolTable]: System include assert.h could not be resolved by CDT -- only built-in system includes are available. [2021-10-03 11:56:33,185 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e50d970d/f677ec4180bf4efca76b47e3c8a5d6e9/FLAGd014c3f3b [2021-10-03 11:56:33,539 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e50d970d/f677ec4180bf4efca76b47e3c8a5d6e9 [2021-10-03 11:56:33,546 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-03 11:56:33,555 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-03 11:56:33,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-03 11:56:33,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-03 11:56:33,569 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-03 11:56:33,570 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 11:56:33" (1/1) ... [2021-10-03 11:56:33,571 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@284c20db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 11:56:33, skipping insertion in model container [2021-10-03 11:56:33,571 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 11:56:33" (1/1) ... [2021-10-03 11:56:33,579 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-03 11:56:33,598 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-03 11:56:33,720 WARN L612 FunctionHandler]: implicit declaration of function assert [2021-10-03 11:56:33,776 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/chl/collitem-subst.wvr.c[2390,2403] [2021-10-03 11:56:33,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-03 11:56:33,794 INFO L203 MainTranslator]: Completed pre-run [2021-10-03 11:56:33,807 WARN L612 FunctionHandler]: implicit declaration of function assert [2021-10-03 11:56:33,824 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/chl/collitem-subst.wvr.c[2390,2403] [2021-10-03 11:56:33,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-03 11:56:33,847 INFO L208 MainTranslator]: Completed translation [2021-10-03 11:56:33,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 11:56:33 WrapperNode [2021-10-03 11:56:33,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-03 11:56:33,851 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-03 11:56:33,851 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-03 11:56:33,851 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-03 11:56:33,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 11:56:33" (1/1) ... [2021-10-03 11:56:33,883 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 11:56:33" (1/1) ... [2021-10-03 11:56:33,931 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-03 11:56:33,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-03 11:56:33,935 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-03 11:56:33,935 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-03 11:56:33,946 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 11:56:33" (1/1) ... [2021-10-03 11:56:33,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 11:56:33" (1/1) ... [2021-10-03 11:56:33,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 11:56:33" (1/1) ... [2021-10-03 11:56:33,968 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 11:56:33" (1/1) ... [2021-10-03 11:56:33,981 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 11:56:33" (1/1) ... [2021-10-03 11:56:33,984 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 11:56:33" (1/1) ... [2021-10-03 11:56:33,988 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 11:56:33" (1/1) ... [2021-10-03 11:56:33,997 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-03 11:56:34,001 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-03 11:56:34,001 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-03 11:56:34,002 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-03 11:56:34,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 11:56:33" (1/1) ... [2021-10-03 11:56:34,017 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-03 11:56:34,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-03 11:56:34,063 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-03 11:56:34,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-03 11:56:34,143 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-03 11:56:34,143 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-03 11:56:34,143 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-03 11:56:34,144 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-03 11:56:34,144 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-03 11:56:34,144 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-03 11:56:34,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-03 11:56:34,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-03 11:56:34,145 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-03 11:56:34,145 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-03 11:56:34,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-03 11:56:34,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-03 11:56:34,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-03 11:56:34,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-03 11:56:34,148 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-03 11:56:34,878 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-03 11:56:34,879 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-03 11:56:34,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 11:56:34 BoogieIcfgContainer [2021-10-03 11:56:34,882 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-03 11:56:34,884 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-03 11:56:34,885 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-03 11:56:34,888 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-03 11:56:34,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.10 11:56:33" (1/3) ... [2021-10-03 11:56:34,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c971fcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 11:56:34, skipping insertion in model container [2021-10-03 11:56:34,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 11:56:33" (2/3) ... [2021-10-03 11:56:34,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c971fcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 11:56:34, skipping insertion in model container [2021-10-03 11:56:34,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 11:56:34" (3/3) ... [2021-10-03 11:56:34,892 INFO L111 eAbstractionObserver]: Analyzing ICFG collitem-subst.wvr.c [2021-10-03 11:56:34,899 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-03 11:56:34,899 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-03 11:56:34,900 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-03 11:56:34,900 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-03 11:56:34,936 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:56:34,936 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:56:34,937 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:56:34,938 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:56:34,938 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:56:34,938 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:56:34,939 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:56:34,940 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:56:34,940 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:56:34,940 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:56:34,941 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:56:34,941 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:56:34,942 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:56:34,942 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:56:34,942 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:56:34,943 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:56:34,943 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:56:34,944 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:56:34,948 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:56:34,948 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:56:34,948 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:56:34,949 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:56:34,949 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:56:34,951 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:56:34,952 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:56:34,952 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:56:34,952 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:56:34,952 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:56:34,955 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:56:34,955 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:56:34,955 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:56:34,956 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:56:34,956 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:56:34,966 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-03 11:56:35,030 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-03 11:56:35,039 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, mConcurrency=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 [2021-10-03 11:56:35,039 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-03 11:56:35,062 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-03 11:56:35,083 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 123 places, 115 transitions, 254 flow [2021-10-03 11:56:35,092 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 123 places, 115 transitions, 254 flow [2021-10-03 11:56:35,096 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 123 places, 115 transitions, 254 flow [2021-10-03 11:56:35,162 INFO L129 PetriNetUnfolder]: 2/112 cut-off events. [2021-10-03 11:56:35,162 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-03 11:56:35,167 INFO L84 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 112 events. 2/112 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 16 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2021-10-03 11:56:35,170 INFO L116 LiptonReduction]: Number of co-enabled transitions 168 [2021-10-03 11:56:40,589 INFO L131 LiptonReduction]: Checked pairs total: 381 [2021-10-03 11:56:40,590 INFO L133 LiptonReduction]: Total number of compositions: 100 [2021-10-03 11:56:40,598 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 64 flow [2021-10-03 11:56:40,611 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 44 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 43 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 11:56:40,614 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 43 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 11:56:40,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-03 11:56:40,621 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 11:56:40,622 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-03 11:56:40,622 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-03 11:56:40,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 11:56:40,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1101654508, now seen corresponding path program 1 times [2021-10-03 11:56:40,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 11:56:40,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835369121] [2021-10-03 11:56:40,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 11:56:40,641 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 11:56:40,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 11:56:42,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-03 11:56:42,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 11:56:42,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835369121] [2021-10-03 11:56:42,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835369121] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-03 11:56:42,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-03 11:56:42,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-03 11:56:42,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093413104] [2021-10-03 11:56:42,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-03 11:56:42,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 11:56:42,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-03 11:56:42,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-03 11:56:42,461 INFO L87 Difference]: Start difference. First operand has 44 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 43 states have internal predecessors, (80), 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 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 11:56:42,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 11:56:42,952 INFO L93 Difference]: Finished difference Result 67 states and 106 transitions. [2021-10-03 11:56:42,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-03 11:56:42,954 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2021-10-03 11:56:42,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 11:56:42,964 INFO L225 Difference]: With dead ends: 67 [2021-10-03 11:56:42,964 INFO L226 Difference]: Without dead ends: 52 [2021-10-03 11:56:42,966 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 576.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-03 11:56:42,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-03 11:56:42,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 44. [2021-10-03 11:56:42,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.7674418604651163) internal successors, (76), 43 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 11:56:43,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 76 transitions. [2021-10-03 11:56:43,001 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 76 transitions. Word has length 16 [2021-10-03 11:56:43,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 11:56:43,002 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 76 transitions. [2021-10-03 11:56:43,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 11:56:43,002 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 76 transitions. [2021-10-03 11:56:43,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-03 11:56:43,004 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 11:56:43,004 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-03 11:56:43,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-03 11:56:43,005 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-03 11:56:43,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 11:56:43,006 INFO L82 PathProgramCache]: Analyzing trace with hash 240546020, now seen corresponding path program 2 times [2021-10-03 11:56:43,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 11:56:43,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881022637] [2021-10-03 11:56:43,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 11:56:43,007 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 11:56:43,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 11:56:44,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-03 11:56:44,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 11:56:44,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881022637] [2021-10-03 11:56:44,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881022637] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-03 11:56:44,119 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-03 11:56:44,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-03 11:56:44,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853111083] [2021-10-03 11:56:44,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-03 11:56:44,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 11:56:44,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-03 11:56:44,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-03 11:56:44,127 INFO L87 Difference]: Start difference. First operand 44 states and 76 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 11:56:44,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 11:56:44,445 INFO L93 Difference]: Finished difference Result 61 states and 92 transitions. [2021-10-03 11:56:44,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-03 11:56:44,446 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2021-10-03 11:56:44,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 11:56:44,448 INFO L225 Difference]: With dead ends: 61 [2021-10-03 11:56:44,449 INFO L226 Difference]: Without dead ends: 48 [2021-10-03 11:56:44,450 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 403.5ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-03 11:56:44,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-10-03 11:56:44,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 40. [2021-10-03 11:56:44,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.7179487179487178) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 11:56:44,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 67 transitions. [2021-10-03 11:56:44,461 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 67 transitions. Word has length 16 [2021-10-03 11:56:44,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 11:56:44,462 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 67 transitions. [2021-10-03 11:56:44,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 11:56:44,462 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 67 transitions. [2021-10-03 11:56:44,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-03 11:56:44,463 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 11:56:44,464 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-03 11:56:44,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-03 11:56:44,464 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-03 11:56:44,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 11:56:44,465 INFO L82 PathProgramCache]: Analyzing trace with hash -61418710, now seen corresponding path program 3 times [2021-10-03 11:56:44,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 11:56:44,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993183190] [2021-10-03 11:56:44,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 11:56:44,466 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 11:56:44,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 11:56:45,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-03 11:56:45,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 11:56:45,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993183190] [2021-10-03 11:56:45,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993183190] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-03 11:56:45,478 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-03 11:56:45,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-03 11:56:45,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192626941] [2021-10-03 11:56:45,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-03 11:56:45,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 11:56:45,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-03 11:56:45,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-03 11:56:45,488 INFO L87 Difference]: Start difference. First operand 40 states and 67 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 11:56:45,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 11:56:45,817 INFO L93 Difference]: Finished difference Result 55 states and 80 transitions. [2021-10-03 11:56:45,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-03 11:56:45,818 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2021-10-03 11:56:45,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 11:56:45,819 INFO L225 Difference]: With dead ends: 55 [2021-10-03 11:56:45,820 INFO L226 Difference]: Without dead ends: 40 [2021-10-03 11:56:45,820 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 387.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-03 11:56:45,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-03 11:56:45,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 32. [2021-10-03 11:56:45,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 31 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 11:56:45,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 48 transitions. [2021-10-03 11:56:45,830 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 48 transitions. Word has length 16 [2021-10-03 11:56:45,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 11:56:45,830 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 48 transitions. [2021-10-03 11:56:45,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 11:56:45,831 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 48 transitions. [2021-10-03 11:56:45,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-03 11:56:45,833 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 11:56:45,833 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-03 11:56:45,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-03 11:56:45,834 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-03 11:56:45,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 11:56:45,836 INFO L82 PathProgramCache]: Analyzing trace with hash 743408506, now seen corresponding path program 4 times [2021-10-03 11:56:45,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 11:56:45,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710311993] [2021-10-03 11:56:45,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 11:56:45,838 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 11:56:45,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 11:56:46,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-03 11:56:46,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 11:56:46,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710311993] [2021-10-03 11:56:46,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710311993] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-03 11:56:46,762 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-03 11:56:46,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-03 11:56:46,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706800722] [2021-10-03 11:56:46,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-03 11:56:46,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 11:56:46,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-03 11:56:46,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-03 11:56:46,766 INFO L87 Difference]: Start difference. First operand 32 states and 48 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 11:56:47,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 11:56:47,021 INFO L93 Difference]: Finished difference Result 43 states and 61 transitions. [2021-10-03 11:56:47,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-03 11:56:47,022 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2021-10-03 11:56:47,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 11:56:47,023 INFO L225 Difference]: With dead ends: 43 [2021-10-03 11:56:47,023 INFO L226 Difference]: Without dead ends: 24 [2021-10-03 11:56:47,024 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 327.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-03 11:56:47,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-03 11:56:47,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-10-03 11:56:47,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 11:56:47,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2021-10-03 11:56:47,027 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 16 [2021-10-03 11:56:47,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 11:56:47,028 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2021-10-03 11:56:47,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 11:56:47,028 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2021-10-03 11:56:47,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-03 11:56:47,029 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 11:56:47,029 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-03 11:56:47,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-03 11:56:47,030 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-03 11:56:47,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 11:56:47,031 INFO L82 PathProgramCache]: Analyzing trace with hash -579614060, now seen corresponding path program 5 times [2021-10-03 11:56:47,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 11:56:47,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947038299] [2021-10-03 11:56:47,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 11:56:47,032 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 11:56:47,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 11:56:47,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-03 11:56:48,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 11:56:48,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947038299] [2021-10-03 11:56:48,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947038299] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-03 11:56:48,000 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-03 11:56:48,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-03 11:56:48,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726298229] [2021-10-03 11:56:48,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-03 11:56:48,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 11:56:48,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-03 11:56:48,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-03 11:56:48,004 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 11:56:48,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 11:56:48,395 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2021-10-03 11:56:48,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-03 11:56:48,396 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2021-10-03 11:56:48,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 11:56:48,398 INFO L225 Difference]: With dead ends: 31 [2021-10-03 11:56:48,399 INFO L226 Difference]: Without dead ends: 22 [2021-10-03 11:56:48,400 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 566.3ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-03 11:56:48,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-03 11:56:48,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-10-03 11:56:48,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 11:56:48,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2021-10-03 11:56:48,407 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 16 [2021-10-03 11:56:48,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 11:56:48,408 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-10-03 11:56:48,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 11:56:48,409 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2021-10-03 11:56:48,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-03 11:56:48,410 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 11:56:48,411 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-03 11:56:48,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-03 11:56:48,411 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-03 11:56:48,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 11:56:48,412 INFO L82 PathProgramCache]: Analyzing trace with hash -598048086, now seen corresponding path program 6 times [2021-10-03 11:56:48,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 11:56:48,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668250620] [2021-10-03 11:56:48,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 11:56:48,413 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 11:56:48,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 11:56:49,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-03 11:56:49,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 11:56:49,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668250620] [2021-10-03 11:56:49,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668250620] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-03 11:56:49,404 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-03 11:56:49,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-03 11:56:49,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879645849] [2021-10-03 11:56:49,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-03 11:56:49,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 11:56:49,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-03 11:56:49,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-03 11:56:49,407 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 11:56:49,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 11:56:49,774 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2021-10-03 11:56:49,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-03 11:56:49,774 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2021-10-03 11:56:49,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 11:56:49,775 INFO L225 Difference]: With dead ends: 21 [2021-10-03 11:56:49,775 INFO L226 Difference]: Without dead ends: 0 [2021-10-03 11:56:49,775 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 507.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-03 11:56:49,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-03 11:56:49,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-03 11:56:49,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 11:56:49,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-03 11:56:49,778 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-10-03 11:56:49,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 11:56:49,778 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-03 11:56:49,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-03 11:56:49,779 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-03 11:56:49,779 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-03 11:56:49,782 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-03 11:56:49,783 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-03 11:56:49,783 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-03 11:56:49,784 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-03 11:56:49,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-03 11:56:49,790 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-03 11:56:49,791 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-03 11:56:49,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.10 11:56:49 BasicIcfg [2021-10-03 11:56:49,794 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-03 11:56:49,794 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-03 11:56:49,795 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-03 11:56:49,795 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-03 11:56:49,795 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 11:56:34" (3/4) ... [2021-10-03 11:56:49,799 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-03 11:56:49,805 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-03 11:56:49,806 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-03 11:56:49,806 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-10-03 11:56:49,815 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-10-03 11:56:49,816 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-03 11:56:49,816 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-03 11:56:49,906 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-10-03 11:56:49,907 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-03 11:56:49,909 INFO L168 Benchmark]: Toolchain (without parser) took 16359.98 ms. Allocated memory was 41.9 MB in the beginning and 195.0 MB in the end (delta: 153.1 MB). Free memory was 19.0 MB in the beginning and 124.0 MB in the end (delta: -105.0 MB). Peak memory consumption was 51.0 MB. Max. memory is 16.1 GB. [2021-10-03 11:56:49,909 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 41.9 MB. Free memory was 21.3 MB in the beginning and 21.2 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-03 11:56:49,910 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.63 ms. Allocated memory is still 52.4 MB. Free memory was 38.5 MB in the beginning and 28.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-03 11:56:49,911 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.48 ms. Allocated memory is still 52.4 MB. Free memory was 28.0 MB in the beginning and 26.2 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-03 11:56:49,911 INFO L168 Benchmark]: Boogie Preprocessor took 65.92 ms. Allocated memory is still 52.4 MB. Free memory was 26.2 MB in the beginning and 25.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-03 11:56:49,912 INFO L168 Benchmark]: RCFGBuilder took 881.43 ms. Allocated memory is still 52.4 MB. Free memory was 24.9 MB in the beginning and 27.6 MB in the end (delta: -2.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. [2021-10-03 11:56:49,912 INFO L168 Benchmark]: TraceAbstraction took 14909.57 ms. Allocated memory was 52.4 MB in the beginning and 195.0 MB in the end (delta: 142.6 MB). Free memory was 27.2 MB in the beginning and 128.2 MB in the end (delta: -101.0 MB). Peak memory consumption was 41.0 MB. Max. memory is 16.1 GB. [2021-10-03 11:56:49,913 INFO L168 Benchmark]: Witness Printer took 112.55 ms. Allocated memory is still 195.0 MB. Free memory was 127.2 MB in the beginning and 124.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-03 11:56:49,916 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 41.9 MB. Free memory was 21.3 MB in the beginning and 21.2 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 285.63 ms. Allocated memory is still 52.4 MB. Free memory was 38.5 MB in the beginning and 28.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 82.48 ms. Allocated memory is still 52.4 MB. Free memory was 28.0 MB in the beginning and 26.2 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 65.92 ms. Allocated memory is still 52.4 MB. Free memory was 26.2 MB in the beginning and 25.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 881.43 ms. Allocated memory is still 52.4 MB. Free memory was 24.9 MB in the beginning and 27.6 MB in the end (delta: -2.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 14909.57 ms. Allocated memory was 52.4 MB in the beginning and 195.0 MB in the end (delta: 142.6 MB). Free memory was 27.2 MB in the beginning and 128.2 MB in the end (delta: -101.0 MB). Peak memory consumption was 41.0 MB. Max. memory is 16.1 GB. * Witness Printer took 112.55 ms. Allocated memory is still 195.0 MB. Free memory was 127.2 MB in the beginning and 124.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5497.6ms, 123 PlacesBefore, 30 PlacesAfterwards, 115 TransitionsBefore, 20 TransitionsAfterwards, 168 CoEnabledTransitionPairs, 8 FixpointIterations, 80 TrivialSequentialCompositions, 15 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 100 TotalNumberOfCompositions, 381 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 381, positive: 381, positive conditional: 0, positive unconditional: 381, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 130, positive: 130, positive conditional: 0, positive unconditional: 130, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 130, positive: 130, positive conditional: 0, positive unconditional: 130, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 381, positive: 251, positive conditional: 0, positive unconditional: 251, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 130, unknown conditional: 0, unknown unconditional: 130] , Statistics on independence cache: Total cache size (in pairs): 30, Positive cache size: 30, Positive conditional cache size: 0, Positive unconditional cache size: 30, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 72]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 126 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 14760.8ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 16.2ms, AutomataDifference: 2218.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5572.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 141 SDtfs, 183 SDslu, 175 SDs, 0 SdLazy, 94 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 226.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2768.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 54.2ms AutomataMinimizationTime, 6 MinimizatonAttempts, 24 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 32.2ms SsaConstructionTime, 481.8ms SatisfiabilityAnalysisTime, 6162.2ms InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 4518 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-03 11:56:49,971 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...