./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_ground-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_ground-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 4c9c46abbea18888bba6501dfe6c704a11e8fe399c985999e1e07c66bb12b728 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 20:34:00,581 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 20:34:00,584 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 20:34:00,633 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 20:34:00,634 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 20:34:00,637 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 20:34:00,640 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 20:34:00,643 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 20:34:00,644 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 20:34:00,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 20:34:00,648 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 20:34:00,650 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 20:34:00,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 20:34:00,652 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 20:34:00,654 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 20:34:00,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 20:34:00,658 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 20:34:00,659 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 20:34:00,660 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 20:34:00,663 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 20:34:00,666 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 20:34:00,667 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 20:34:00,668 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 20:34:00,669 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 20:34:00,673 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 20:34:00,676 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 20:34:00,677 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 20:34:00,678 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 20:34:00,679 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 20:34:00,680 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 20:34:00,680 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 20:34:00,681 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 20:34:00,682 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 20:34:00,683 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 20:34:00,684 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 20:34:00,684 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 20:34:00,685 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 20:34:00,686 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 20:34:00,686 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 20:34:00,687 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 20:34:00,687 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 20:34:00,688 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 20:34:00,718 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 20:34:00,719 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 20:34:00,719 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 20:34:00,719 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 20:34:00,720 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 20:34:00,720 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 20:34:00,721 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 20:34:00,721 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 20:34:00,721 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 20:34:00,722 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 20:34:00,722 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 20:34:00,723 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 20:34:00,723 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 20:34:00,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 20:34:00,723 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 20:34:00,723 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 20:34:00,724 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 20:34:00,724 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 20:34:00,724 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 20:34:00,724 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 20:34:00,724 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 20:34:00,724 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 20:34:00,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 20:34:00,725 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 20:34:00,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 20:34:00,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 20:34:00,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 20:34:00,725 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 20:34:00,726 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 20:34:00,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 20:34:00,726 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 20:34:00,726 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 20:34:00,726 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 20:34:00,727 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 20:34:00,727 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c9c46abbea18888bba6501dfe6c704a11e8fe399c985999e1e07c66bb12b728 [2021-12-16 20:34:00,937 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 20:34:00,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 20:34:00,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 20:34:00,960 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 20:34:00,961 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 20:34:00,962 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_ground-1.i [2021-12-16 20:34:01,014 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/febb1b885/85d99e38ab9a4688b82538e7c50c29ac/FLAGf09bca1a8 [2021-12-16 20:34:01,338 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 20:34:01,339 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_ground-1.i [2021-12-16 20:34:01,344 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/febb1b885/85d99e38ab9a4688b82538e7c50c29ac/FLAGf09bca1a8 [2021-12-16 20:34:01,783 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/febb1b885/85d99e38ab9a4688b82538e7c50c29ac [2021-12-16 20:34:01,786 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 20:34:01,787 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 20:34:01,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 20:34:01,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 20:34:01,794 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 20:34:01,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 08:34:01" (1/1) ... [2021-12-16 20:34:01,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@889d73f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:34:01, skipping insertion in model container [2021-12-16 20:34:01,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 08:34:01" (1/1) ... [2021-12-16 20:34:01,801 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 20:34:01,817 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 20:34:01,954 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_ground-1.i[832,845] [2021-12-16 20:34:01,973 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 20:34:01,978 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 20:34:01,988 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_ground-1.i[832,845] [2021-12-16 20:34:02,001 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 20:34:02,013 INFO L208 MainTranslator]: Completed translation [2021-12-16 20:34:02,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:34:02 WrapperNode [2021-12-16 20:34:02,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 20:34:02,015 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 20:34:02,015 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 20:34:02,015 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 20:34:02,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:34:02" (1/1) ... [2021-12-16 20:34:02,028 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:34:02" (1/1) ... [2021-12-16 20:34:02,061 INFO L137 Inliner]: procedures = 18, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 137 [2021-12-16 20:34:02,063 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 20:34:02,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 20:34:02,064 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 20:34:02,064 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 20:34:02,070 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:34:02" (1/1) ... [2021-12-16 20:34:02,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:34:02" (1/1) ... [2021-12-16 20:34:02,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:34:02" (1/1) ... [2021-12-16 20:34:02,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:34:02" (1/1) ... [2021-12-16 20:34:02,088 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:34:02" (1/1) ... [2021-12-16 20:34:02,096 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:34:02" (1/1) ... [2021-12-16 20:34:02,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:34:02" (1/1) ... [2021-12-16 20:34:02,099 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 20:34:02,100 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 20:34:02,100 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 20:34:02,101 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 20:34:02,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:34:02" (1/1) ... [2021-12-16 20:34:02,113 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 20:34:02,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 20:34:02,145 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) [2021-12-16 20:34:02,158 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 [2021-12-16 20:34:02,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 20:34:02,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 20:34:02,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 20:34:02,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 20:34:02,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 20:34:02,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 20:34:02,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 20:34:02,192 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-16 20:34:02,193 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-16 20:34:02,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 20:34:02,272 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 20:34:02,274 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 20:34:02,414 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 20:34:02,419 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 20:34:02,419 INFO L301 CfgBuilder]: Removed 8 assume(true) statements. [2021-12-16 20:34:02,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 08:34:02 BoogieIcfgContainer [2021-12-16 20:34:02,421 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 20:34:02,422 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 20:34:02,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 20:34:02,425 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 20:34:02,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 08:34:01" (1/3) ... [2021-12-16 20:34:02,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55e9c162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 08:34:02, skipping insertion in model container [2021-12-16 20:34:02,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:34:02" (2/3) ... [2021-12-16 20:34:02,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55e9c162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 08:34:02, skipping insertion in model container [2021-12-16 20:34:02,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 08:34:02" (3/3) ... [2021-12-16 20:34:02,428 INFO L111 eAbstractionObserver]: Analyzing ICFG data_structures_set_multi_proc_ground-1.i [2021-12-16 20:34:02,432 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 20:34:02,432 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 20:34:02,468 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 20:34:02,473 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=PETRI_NET, 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 [2021-12-16 20:34:02,474 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 20:34:02,486 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 37 states have internal predecessors, (56), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 20:34:02,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-16 20:34:02,490 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 20:34:02,490 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 20:34:02,491 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 20:34:02,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 20:34:02,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1976888394, now seen corresponding path program 1 times [2021-12-16 20:34:02,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 20:34:02,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243250975] [2021-12-16 20:34:02,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 20:34:02,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 20:34:02,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 20:34:02,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 20:34:02,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 20:34:02,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243250975] [2021-12-16 20:34:02,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243250975] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 20:34:02,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 20:34:02,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 20:34:02,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124895999] [2021-12-16 20:34:02,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 20:34:02,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 20:34:02,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 20:34:02,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 20:34:02,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 20:34:02,689 INFO L87 Difference]: Start difference. First operand has 41 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 37 states have internal predecessors, (56), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 20:34:02,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 20:34:02,748 INFO L93 Difference]: Finished difference Result 110 states and 169 transitions. [2021-12-16 20:34:02,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 20:34:02,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-16 20:34:02,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 20:34:02,756 INFO L225 Difference]: With dead ends: 110 [2021-12-16 20:34:02,756 INFO L226 Difference]: Without dead ends: 65 [2021-12-16 20:34:02,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 20:34:02,761 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 34 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 20:34:02,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 82 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 20:34:02,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-12-16 20:34:02,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 38. [2021-12-16 20:34:02,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 34 states have internal predecessors, (44), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 20:34:02,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2021-12-16 20:34:02,794 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 48 transitions. Word has length 10 [2021-12-16 20:34:02,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 20:34:02,794 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 48 transitions. [2021-12-16 20:34:02,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 20:34:02,795 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 48 transitions. [2021-12-16 20:34:02,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-16 20:34:02,796 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 20:34:02,796 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 20:34:02,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 20:34:02,796 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 20:34:02,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 20:34:02,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1321690828, now seen corresponding path program 1 times [2021-12-16 20:34:02,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 20:34:02,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706072240] [2021-12-16 20:34:02,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 20:34:02,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 20:34:02,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 20:34:02,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 20:34:02,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 20:34:02,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706072240] [2021-12-16 20:34:02,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706072240] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 20:34:02,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116694580] [2021-12-16 20:34:02,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 20:34:02,845 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 20:34:02,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 20:34:02,847 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) [2021-12-16 20:34:02,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 20:34:02,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 20:34:02,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 20:34:02,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 20:34:03,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 20:34:03,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 20:34:03,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 20:34:03,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116694580] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 20:34:03,068 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 20:34:03,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-12-16 20:34:03,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726576637] [2021-12-16 20:34:03,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 20:34:03,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 20:34:03,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 20:34:03,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 20:34:03,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-16 20:34:03,072 INFO L87 Difference]: Start difference. First operand 38 states and 48 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 20:34:03,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 20:34:03,228 INFO L93 Difference]: Finished difference Result 181 states and 243 transitions. [2021-12-16 20:34:03,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 20:34:03,229 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-16 20:34:03,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 20:34:03,232 INFO L225 Difference]: With dead ends: 181 [2021-12-16 20:34:03,234 INFO L226 Difference]: Without dead ends: 148 [2021-12-16 20:34:03,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-16 20:34:03,237 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 147 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 20:34:03,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 202 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 20:34:03,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-12-16 20:34:03,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 44. [2021-12-16 20:34:03,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 40 states have (on average 1.25) internal successors, (50), 40 states have internal predecessors, (50), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 20:34:03,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 54 transitions. [2021-12-16 20:34:03,255 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 54 transitions. Word has length 12 [2021-12-16 20:34:03,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 20:34:03,255 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 54 transitions. [2021-12-16 20:34:03,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 20:34:03,256 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 54 transitions. [2021-12-16 20:34:03,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-16 20:34:03,257 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 20:34:03,257 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 20:34:03,276 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-16 20:34:03,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 20:34:03,468 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 20:34:03,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 20:34:03,468 INFO L85 PathProgramCache]: Analyzing trace with hash -202652846, now seen corresponding path program 2 times [2021-12-16 20:34:03,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 20:34:03,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609330380] [2021-12-16 20:34:03,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 20:34:03,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 20:34:03,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 20:34:03,530 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-16 20:34:03,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 20:34:03,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609330380] [2021-12-16 20:34:03,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609330380] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 20:34:03,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 20:34:03,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 20:34:03,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230045612] [2021-12-16 20:34:03,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 20:34:03,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 20:34:03,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 20:34:03,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 20:34:03,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-16 20:34:03,534 INFO L87 Difference]: Start difference. First operand 44 states and 54 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 20:34:03,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 20:34:03,564 INFO L93 Difference]: Finished difference Result 82 states and 103 transitions. [2021-12-16 20:34:03,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 20:34:03,564 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-12-16 20:34:03,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 20:34:03,565 INFO L225 Difference]: With dead ends: 82 [2021-12-16 20:34:03,565 INFO L226 Difference]: Without dead ends: 48 [2021-12-16 20:34:03,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-16 20:34:03,567 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 39 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 20:34:03,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 56 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 20:34:03,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-12-16 20:34:03,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2021-12-16 20:34:03,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 44 states have (on average 1.25) internal successors, (55), 44 states have internal predecessors, (55), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 20:34:03,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 57 transitions. [2021-12-16 20:34:03,574 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 57 transitions. Word has length 18 [2021-12-16 20:34:03,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 20:34:03,574 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 57 transitions. [2021-12-16 20:34:03,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 20:34:03,575 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 57 transitions. [2021-12-16 20:34:03,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-16 20:34:03,576 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 20:34:03,576 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 20:34:03,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 20:34:03,576 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 20:34:03,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 20:34:03,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1069304186, now seen corresponding path program 1 times [2021-12-16 20:34:03,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 20:34:03,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048087188] [2021-12-16 20:34:03,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 20:34:03,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 20:34:03,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 20:34:03,655 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-16 20:34:03,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 20:34:03,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048087188] [2021-12-16 20:34:03,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048087188] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 20:34:03,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 20:34:03,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 20:34:03,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129683986] [2021-12-16 20:34:03,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 20:34:03,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 20:34:03,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 20:34:03,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 20:34:03,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 20:34:03,658 INFO L87 Difference]: Start difference. First operand 47 states and 57 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 20:34:03,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 20:34:03,690 INFO L93 Difference]: Finished difference Result 90 states and 112 transitions. [2021-12-16 20:34:03,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 20:34:03,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-12-16 20:34:03,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 20:34:03,691 INFO L225 Difference]: With dead ends: 90 [2021-12-16 20:34:03,691 INFO L226 Difference]: Without dead ends: 59 [2021-12-16 20:34:03,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 20:34:03,693 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 12 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 20:34:03,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 63 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 20:34:03,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-12-16 20:34:03,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 48. [2021-12-16 20:34:03,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 45 states have (on average 1.2444444444444445) internal successors, (56), 45 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 20:34:03,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2021-12-16 20:34:03,699 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 31 [2021-12-16 20:34:03,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 20:34:03,700 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2021-12-16 20:34:03,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 20:34:03,700 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2021-12-16 20:34:03,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-16 20:34:03,701 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 20:34:03,701 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 20:34:03,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 20:34:03,701 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 20:34:03,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 20:34:03,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1327947132, now seen corresponding path program 1 times [2021-12-16 20:34:03,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 20:34:03,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508899006] [2021-12-16 20:34:03,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 20:34:03,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 20:34:03,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 20:34:03,756 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-16 20:34:03,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 20:34:03,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508899006] [2021-12-16 20:34:03,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508899006] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 20:34:03,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12876406] [2021-12-16 20:34:03,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 20:34:03,758 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 20:34:03,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 20:34:03,759 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) [2021-12-16 20:34:03,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-16 20:34:03,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 20:34:03,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-16 20:34:03,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 20:34:03,938 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-16 20:34:03,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 20:34:04,066 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-16 20:34:04,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12876406] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 20:34:04,068 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 20:34:04,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2021-12-16 20:34:04,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845149114] [2021-12-16 20:34:04,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 20:34:04,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-16 20:34:04,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 20:34:04,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-16 20:34:04,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2021-12-16 20:34:04,077 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 20:34:04,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 20:34:04,241 INFO L93 Difference]: Finished difference Result 187 states and 243 transitions. [2021-12-16 20:34:04,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 20:34:04,242 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-12-16 20:34:04,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 20:34:04,244 INFO L225 Difference]: With dead ends: 187 [2021-12-16 20:34:04,244 INFO L226 Difference]: Without dead ends: 150 [2021-12-16 20:34:04,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=141, Unknown=0, NotChecked=0, Total=240 [2021-12-16 20:34:04,246 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 173 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 20:34:04,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 176 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 20:34:04,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-12-16 20:34:04,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 72. [2021-12-16 20:34:04,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 69 states have (on average 1.2028985507246377) internal successors, (83), 69 states have internal predecessors, (83), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 20:34:04,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 85 transitions. [2021-12-16 20:34:04,293 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 85 transitions. Word has length 33 [2021-12-16 20:34:04,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 20:34:04,293 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 85 transitions. [2021-12-16 20:34:04,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 20:34:04,294 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 85 transitions. [2021-12-16 20:34:04,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-16 20:34:04,297 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 20:34:04,297 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 20:34:04,317 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-16 20:34:04,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 20:34:04,499 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 20:34:04,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 20:34:04,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1439765920, now seen corresponding path program 1 times [2021-12-16 20:34:04,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 20:34:04,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812482256] [2021-12-16 20:34:04,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 20:34:04,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 20:34:04,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 20:34:04,605 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-12-16 20:34:04,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 20:34:04,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812482256] [2021-12-16 20:34:04,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812482256] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 20:34:04,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 20:34:04,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 20:34:04,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252210435] [2021-12-16 20:34:04,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 20:34:04,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 20:34:04,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 20:34:04,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 20:34:04,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 20:34:04,608 INFO L87 Difference]: Start difference. First operand 72 states and 85 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 20:34:04,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 20:34:04,621 INFO L93 Difference]: Finished difference Result 94 states and 112 transitions. [2021-12-16 20:34:04,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 20:34:04,621 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-12-16 20:34:04,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 20:34:04,622 INFO L225 Difference]: With dead ends: 94 [2021-12-16 20:34:04,622 INFO L226 Difference]: Without dead ends: 64 [2021-12-16 20:34:04,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 20:34:04,623 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 11 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 20:34:04,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 95 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 20:34:04,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-12-16 20:34:04,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-12-16 20:34:04,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 61 states have (on average 1.1475409836065573) internal successors, (70), 61 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 20:34:04,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2021-12-16 20:34:04,628 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 53 [2021-12-16 20:34:04,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 20:34:04,629 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2021-12-16 20:34:04,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 20:34:04,629 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2021-12-16 20:34:04,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-16 20:34:04,630 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 20:34:04,630 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 20:34:04,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 20:34:04,631 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 20:34:04,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 20:34:04,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1385301982, now seen corresponding path program 2 times [2021-12-16 20:34:04,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 20:34:04,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055256339] [2021-12-16 20:34:04,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 20:34:04,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 20:34:04,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 20:34:04,771 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-16 20:34:04,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 20:34:04,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055256339] [2021-12-16 20:34:04,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055256339] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 20:34:04,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695720739] [2021-12-16 20:34:04,772 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 20:34:04,772 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 20:34:04,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 20:34:04,773 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) [2021-12-16 20:34:04,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-16 20:34:04,860 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 20:34:04,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 20:34:04,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-16 20:34:04,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 20:34:04,957 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-16 20:34:04,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 20:34:05,243 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-16 20:34:05,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695720739] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 20:34:05,244 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 20:34:05,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2021-12-16 20:34:05,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771439118] [2021-12-16 20:34:05,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 20:34:05,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-16 20:34:05,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 20:34:05,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-16 20:34:05,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-12-16 20:34:05,248 INFO L87 Difference]: Start difference. First operand 64 states and 72 transitions. Second operand has 25 states, 25 states have (on average 2.76) internal successors, (69), 25 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 20:34:05,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 20:34:05,485 INFO L93 Difference]: Finished difference Result 261 states and 332 transitions. [2021-12-16 20:34:05,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-16 20:34:05,486 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.76) internal successors, (69), 25 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-12-16 20:34:05,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 20:34:05,488 INFO L225 Difference]: With dead ends: 261 [2021-12-16 20:34:05,488 INFO L226 Difference]: Without dead ends: 220 [2021-12-16 20:34:05,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-12-16 20:34:05,489 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 268 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 20:34:05,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 187 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 20:34:05,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-12-16 20:34:05,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 88. [2021-12-16 20:34:05,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 85 states have (on average 1.1058823529411765) internal successors, (94), 85 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 20:34:05,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 96 transitions. [2021-12-16 20:34:05,502 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 96 transitions. Word has length 54 [2021-12-16 20:34:05,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 20:34:05,502 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 96 transitions. [2021-12-16 20:34:05,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.76) internal successors, (69), 25 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 20:34:05,502 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 96 transitions. [2021-12-16 20:34:05,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-16 20:34:05,503 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 20:34:05,504 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 20:34:05,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-16 20:34:05,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 20:34:05,724 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 20:34:05,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 20:34:05,724 INFO L85 PathProgramCache]: Analyzing trace with hash 359833914, now seen corresponding path program 3 times [2021-12-16 20:34:05,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 20:34:05,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597653217] [2021-12-16 20:34:05,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 20:34:05,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 20:34:05,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 20:34:06,062 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-16 20:34:06,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 20:34:06,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597653217] [2021-12-16 20:34:06,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597653217] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 20:34:06,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171115254] [2021-12-16 20:34:06,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-16 20:34:06,064 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 20:34:06,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 20:34:06,068 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) [2021-12-16 20:34:06,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-16 20:34:06,163 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-16 20:34:06,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 20:34:06,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-16 20:34:06,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 20:34:06,318 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2021-12-16 20:34:06,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 20:34:06,470 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2021-12-16 20:34:06,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171115254] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 20:34:06,470 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 20:34:06,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 5, 5] total 31 [2021-12-16 20:34:06,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471024260] [2021-12-16 20:34:06,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 20:34:06,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-12-16 20:34:06,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 20:34:06,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-12-16 20:34:06,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=603, Unknown=0, NotChecked=0, Total=930 [2021-12-16 20:34:06,473 INFO L87 Difference]: Start difference. First operand 88 states and 96 transitions. Second operand has 31 states, 31 states have (on average 2.774193548387097) internal successors, (86), 31 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 20:34:06,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 20:34:06,823 INFO L93 Difference]: Finished difference Result 314 states and 392 transitions. [2021-12-16 20:34:06,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-16 20:34:06,824 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.774193548387097) internal successors, (86), 31 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-12-16 20:34:06,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 20:34:06,826 INFO L225 Difference]: With dead ends: 314 [2021-12-16 20:34:06,826 INFO L226 Difference]: Without dead ends: 273 [2021-12-16 20:34:06,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2021-12-16 20:34:06,828 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 555 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 20:34:06,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [578 Valid, 379 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 20:34:06,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-12-16 20:34:06,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 134. [2021-12-16 20:34:06,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 131 states have (on average 1.1297709923664123) internal successors, (148), 131 states have internal predecessors, (148), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 20:34:06,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 150 transitions. [2021-12-16 20:34:06,858 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 150 transitions. Word has length 78 [2021-12-16 20:34:06,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 20:34:06,858 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 150 transitions. [2021-12-16 20:34:06,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.774193548387097) internal successors, (86), 31 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 20:34:06,859 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 150 transitions. [2021-12-16 20:34:06,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-16 20:34:06,863 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 20:34:06,863 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 20:34:06,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-16 20:34:07,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 20:34:07,083 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 20:34:07,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 20:34:07,084 INFO L85 PathProgramCache]: Analyzing trace with hash 140841668, now seen corresponding path program 4 times [2021-12-16 20:34:07,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 20:34:07,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625060283] [2021-12-16 20:34:07,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 20:34:07,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 20:34:07,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 20:34:07,450 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-12-16 20:34:07,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 20:34:07,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625060283] [2021-12-16 20:34:07,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625060283] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 20:34:07,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609898054] [2021-12-16 20:34:07,451 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-16 20:34:07,451 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 20:34:07,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 20:34:07,454 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) [2021-12-16 20:34:07,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-16 20:34:07,629 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-16 20:34:07,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 20:34:07,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-16 20:34:07,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 20:34:07,834 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-12-16 20:34:07,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 20:34:08,653 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-12-16 20:34:08,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609898054] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 20:34:08,654 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 20:34:08,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 51 [2021-12-16 20:34:08,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487518487] [2021-12-16 20:34:08,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 20:34:08,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-12-16 20:34:08,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 20:34:08,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-12-16 20:34:08,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2021-12-16 20:34:08,657 INFO L87 Difference]: Start difference. First operand 134 states and 150 transitions. Second operand has 51 states, 51 states have (on average 2.372549019607843) internal successors, (121), 51 states have internal predecessors, (121), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 20:34:09,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 20:34:09,251 INFO L93 Difference]: Finished difference Result 557 states and 709 transitions. [2021-12-16 20:34:09,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-12-16 20:34:09,251 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.372549019607843) internal successors, (121), 51 states have internal predecessors, (121), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2021-12-16 20:34:09,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 20:34:09,254 INFO L225 Difference]: With dead ends: 557 [2021-12-16 20:34:09,254 INFO L226 Difference]: Without dead ends: 472 [2021-12-16 20:34:09,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2021-12-16 20:34:09,256 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 764 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 20:34:09,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [812 Valid, 317 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-16 20:34:09,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-12-16 20:34:09,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 184. [2021-12-16 20:34:09,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 181 states have (on average 1.0939226519337018) internal successors, (198), 181 states have internal predecessors, (198), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 20:34:09,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 200 transitions. [2021-12-16 20:34:09,269 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 200 transitions. Word has length 116 [2021-12-16 20:34:09,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 20:34:09,270 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 200 transitions. [2021-12-16 20:34:09,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.372549019607843) internal successors, (121), 51 states have internal predecessors, (121), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 20:34:09,270 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 200 transitions. [2021-12-16 20:34:09,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-12-16 20:34:09,271 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 20:34:09,272 INFO L514 BasicCegarLoop]: trace histogram [48, 48, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 20:34:09,294 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-16 20:34:09,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 20:34:09,488 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 20:34:09,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 20:34:09,488 INFO L85 PathProgramCache]: Analyzing trace with hash 2022982902, now seen corresponding path program 5 times [2021-12-16 20:34:09,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 20:34:09,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108059129] [2021-12-16 20:34:09,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 20:34:09,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 20:34:09,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 20:34:10,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2451 backedges. 0 proven. 2304 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-12-16 20:34:10,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 20:34:10,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108059129] [2021-12-16 20:34:10,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108059129] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 20:34:10,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477066832] [2021-12-16 20:34:10,541 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-16 20:34:10,541 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 20:34:10,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 20:34:10,544 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 20:34:10,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process Killed by 15