./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/interpolation.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/interpolation.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc --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 30f6a485d859f7eee00a1696279d966456b3a38851c6233a0367f621da73d6bd --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:39:47,488 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:39:47,491 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:39:47,547 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:39:47,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:39:47,554 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:39:47,556 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:39:47,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:39:47,563 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:39:47,565 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:39:47,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:39:47,570 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:39:47,571 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:39:47,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:39:47,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:39:47,580 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:39:47,582 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:39:47,590 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:39:47,592 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:39:47,594 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:39:47,598 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:39:47,602 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:39:47,603 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:39:47,607 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:39:47,611 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:39:47,611 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:39:47,611 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:39:47,613 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:39:47,613 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:39:47,614 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:39:47,614 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:39:47,615 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:39:47,616 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:39:47,617 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:39:47,618 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:39:47,619 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:39:47,620 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:39:47,620 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:39:47,620 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:39:47,621 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:39:47,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:39:47,628 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:39:47,676 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:39:47,677 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:39:47,677 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:39:47,678 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:39:47,679 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:39:47,679 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:39:47,680 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:39:47,680 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:39:47,680 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:39:47,680 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:39:47,681 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:39:47,681 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:39:47,681 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:39:47,681 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:39:47,681 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:39:47,681 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:39:47,682 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:39:47,682 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:39:47,682 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:39:47,682 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:39:47,683 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:39:47,683 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:39:47,683 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:39:47,683 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:39:47,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:39:47,684 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:39:47,685 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:39:47,686 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:39:47,686 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:39:47,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:39:47,686 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:39:47,687 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:39:47,687 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:39:47,687 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30f6a485d859f7eee00a1696279d966456b3a38851c6233a0367f621da73d6bd [2022-11-02 20:39:48,091 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:39:48,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:39:48,120 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:39:48,121 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:39:48,122 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:39:48,124 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/float-benchs/interpolation.c [2022-11-02 20:39:48,207 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/data/39322fb3b/9527e8b5c7d4481f91ec963bca4b424b/FLAG80a48622e [2022-11-02 20:39:48,844 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:39:48,845 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/sv-benchmarks/c/float-benchs/interpolation.c [2022-11-02 20:39:48,853 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/data/39322fb3b/9527e8b5c7d4481f91ec963bca4b424b/FLAG80a48622e [2022-11-02 20:39:49,159 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/data/39322fb3b/9527e8b5c7d4481f91ec963bca4b424b [2022-11-02 20:39:49,167 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:39:49,170 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:39:49,173 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:39:49,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:39:49,177 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:39:49,178 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:39:49" (1/1) ... [2022-11-02 20:39:49,179 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33d7452d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:49, skipping insertion in model container [2022-11-02 20:39:49,179 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:39:49" (1/1) ... [2022-11-02 20:39:49,188 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:39:49,205 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:39:49,452 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/sv-benchmarks/c/float-benchs/interpolation.c[449,462] [2022-11-02 20:39:49,493 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:39:49,506 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:39:49,528 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/sv-benchmarks/c/float-benchs/interpolation.c[449,462] [2022-11-02 20:39:49,560 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:39:49,582 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:39:49,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:49 WrapperNode [2022-11-02 20:39:49,583 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:39:49,585 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:39:49,585 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:39:49,585 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:39:49,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:49" (1/1) ... [2022-11-02 20:39:49,617 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:49" (1/1) ... [2022-11-02 20:39:49,653 INFO L138 Inliner]: procedures = 18, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 76 [2022-11-02 20:39:49,653 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:39:49,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:39:49,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:39:49,655 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:39:49,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:49" (1/1) ... [2022-11-02 20:39:49,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:49" (1/1) ... [2022-11-02 20:39:49,672 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:49" (1/1) ... [2022-11-02 20:39:49,673 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:49" (1/1) ... [2022-11-02 20:39:49,692 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:49" (1/1) ... [2022-11-02 20:39:49,698 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:49" (1/1) ... [2022-11-02 20:39:49,704 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:49" (1/1) ... [2022-11-02 20:39:49,710 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:49" (1/1) ... [2022-11-02 20:39:49,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:39:49,715 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:39:49,716 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:39:49,717 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:39:49,718 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:49" (1/1) ... [2022-11-02 20:39:49,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:39:49,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:39:49,765 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:39:49,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:39:49,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:39:49,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:39:49,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:39:49,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-11-02 20:39:49,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:39:49,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:39:49,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2022-11-02 20:39:49,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:39:49,918 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:39:49,921 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:39:50,075 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:39:50,083 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:39:50,083 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:39:50,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:39:50 BoogieIcfgContainer [2022-11-02 20:39:50,086 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:39:50,089 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:39:50,089 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:39:50,093 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:39:50,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:39:49" (1/3) ... [2022-11-02 20:39:50,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c8c3dfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:39:50, skipping insertion in model container [2022-11-02 20:39:50,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:49" (2/3) ... [2022-11-02 20:39:50,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c8c3dfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:39:50, skipping insertion in model container [2022-11-02 20:39:50,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:39:50" (3/3) ... [2022-11-02 20:39:50,098 INFO L112 eAbstractionObserver]: Analyzing ICFG interpolation.c [2022-11-02 20:39:50,121 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:39:50,121 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:39:50,196 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:39:50,218 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@a9fa3cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:39:50,233 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:39:50,239 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:50,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-02 20:39:50,253 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:50,253 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:50,255 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:50,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:50,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1235833265, now seen corresponding path program 1 times [2022-11-02 20:39:50,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:50,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21498102] [2022-11-02 20:39:50,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:50,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:50,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:50,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:50,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:50,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21498102] [2022-11-02 20:39:50,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21498102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:50,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:50,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:39:50,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306260271] [2022-11-02 20:39:50,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:50,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:39:50,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:50,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:39:50,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:39:50,568 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:50,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:50,588 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2022-11-02 20:39:50,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:39:50,592 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-02 20:39:50,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:50,602 INFO L225 Difference]: With dead ends: 29 [2022-11-02 20:39:50,602 INFO L226 Difference]: Without dead ends: 13 [2022-11-02 20:39:50,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:39:50,614 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:50,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:39:50,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-11-02 20:39:50,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-11-02 20:39:50,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:50,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2022-11-02 20:39:50,663 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 10 [2022-11-02 20:39:50,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:50,665 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2022-11-02 20:39:50,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:50,666 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2022-11-02 20:39:50,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-02 20:39:50,667 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:50,667 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:50,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:39:50,668 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:50,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:50,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1178902664, now seen corresponding path program 1 times [2022-11-02 20:39:50,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:50,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789544425] [2022-11-02 20:39:50,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:50,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:50,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:50,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:50,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:50,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789544425] [2022-11-02 20:39:50,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789544425] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:50,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:50,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:39:50,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599948722] [2022-11-02 20:39:50,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:50,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:39:50,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:50,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:39:50,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:39:50,885 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:50,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:50,906 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2022-11-02 20:39:50,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:39:50,907 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-02 20:39:50,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:50,908 INFO L225 Difference]: With dead ends: 24 [2022-11-02 20:39:50,908 INFO L226 Difference]: Without dead ends: 20 [2022-11-02 20:39:50,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:39:50,911 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:50,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 23 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:39:50,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-02 20:39:50,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 14. [2022-11-02 20:39:50,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:50,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2022-11-02 20:39:50,918 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 10 [2022-11-02 20:39:50,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:50,920 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2022-11-02 20:39:50,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:50,920 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2022-11-02 20:39:50,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:39:50,921 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:50,922 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:50,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:39:50,923 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:50,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:50,924 INFO L85 PathProgramCache]: Analyzing trace with hash 2110328889, now seen corresponding path program 1 times [2022-11-02 20:39:50,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:50,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247573681] [2022-11-02 20:39:50,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:50,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:50,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:39:50,958 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:39:50,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:39:51,048 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:39:51,049 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:39:51,050 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 20:39:51,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:39:51,058 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-02 20:39:51,062 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:39:51,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:39:51 BoogieIcfgContainer [2022-11-02 20:39:51,132 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:39:51,134 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:39:51,134 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:39:51,135 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:39:51,135 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:39:50" (3/4) ... [2022-11-02 20:39:51,139 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 20:39:51,139 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:39:51,140 INFO L158 Benchmark]: Toolchain (without parser) took 1970.11ms. Allocated memory was 111.1MB in the beginning and 144.7MB in the end (delta: 33.6MB). Free memory was 69.9MB in the beginning and 118.6MB in the end (delta: -48.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:39:51,141 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 111.1MB. Free memory was 86.3MB in the beginning and 86.2MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:39:51,142 INFO L158 Benchmark]: CACSL2BoogieTranslator took 411.08ms. Allocated memory is still 111.1MB. Free memory was 69.7MB in the beginning and 86.0MB in the end (delta: -16.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 20:39:51,145 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.30ms. Allocated memory is still 111.1MB. Free memory was 86.0MB in the beginning and 84.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:39:51,152 INFO L158 Benchmark]: Boogie Preprocessor took 59.62ms. Allocated memory is still 111.1MB. Free memory was 84.5MB in the beginning and 82.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:39:51,155 INFO L158 Benchmark]: RCFGBuilder took 371.18ms. Allocated memory is still 111.1MB. Free memory was 82.9MB in the beginning and 71.9MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 20:39:51,155 INFO L158 Benchmark]: TraceAbstraction took 1043.90ms. Allocated memory was 111.1MB in the beginning and 144.7MB in the end (delta: 33.6MB). Free memory was 71.3MB in the beginning and 119.6MB in the end (delta: -48.3MB). Peak memory consumption was 38.2MB. Max. memory is 16.1GB. [2022-11-02 20:39:51,156 INFO L158 Benchmark]: Witness Printer took 5.54ms. Allocated memory is still 144.7MB. Free memory was 119.6MB in the beginning and 118.6MB in the end (delta: 981.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:39:51,158 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 111.1MB. Free memory was 86.3MB in the beginning and 86.2MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 411.08ms. Allocated memory is still 111.1MB. Free memory was 69.7MB in the beginning and 86.0MB in the end (delta: -16.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.30ms. Allocated memory is still 111.1MB. Free memory was 86.0MB in the beginning and 84.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 59.62ms. Allocated memory is still 111.1MB. Free memory was 84.5MB in the beginning and 82.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 371.18ms. Allocated memory is still 111.1MB. Free memory was 82.9MB in the beginning and 71.9MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1043.90ms. Allocated memory was 111.1MB in the beginning and 144.7MB in the end (delta: 33.6MB). Free memory was 71.3MB in the beginning and 119.6MB in the end (delta: -48.3MB). Peak memory consumption was 38.2MB. Max. memory is 16.1GB. * Witness Printer took 5.54ms. Allocated memory is still 144.7MB. Free memory was 119.6MB in the beginning and 118.6MB in the end (delta: 981.7kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 26, overapproximation of to_real at line 15, overapproximation of someBinaryArithmeticFLOAToperation at line 24. Possible FailurePath: [L13] int i; [L14] float z, t; [L15] float min[] = { 5, 10, 12, 30, 150 }; [L16] float max[] = { 10, 12, 30, 150, 300 }; [L18] t = __VERIFIER_nondet_float() [L19] EXPR min[0] [L19] EXPR t >= min[0] && t <= max[sizeof(max) / sizeof(max[0]) - 1] [L19] EXPR max[sizeof(max) / sizeof(max[0]) - 1] [L19] EXPR t >= min[0] && t <= max[sizeof(max) / sizeof(max[0]) - 1] VAL [max={4:0}, max[sizeof(max) / sizeof(max[0]) - 1]=57, min={5:0}, min[0]=56] [L19] CALL assume_abort_if_not(t >= min[0] && t <= max[sizeof(max) / sizeof(max[0]) - 1]) [L7] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L19] RET assume_abort_if_not(t >= min[0] && t <= max[sizeof(max) / sizeof(max[0]) - 1]) [L21] i = 0 VAL [i=0, max={4:0}, min={5:0}] [L21] COND TRUE i < sizeof(min) / sizeof(min[0]) [L22] EXPR max[i] VAL [i=0, max={4:0}, max[i]=55, min={5:0}] [L22] COND TRUE t <= max[i] [L24] EXPR min[i] [L24] EXPR max[i] [L24] EXPR min[i] [L24] z = (t - min[i]) / (max[i] - min[i]) [L26] CALL __VERIFIER_assert(z >= 0.f && z <= 1.f) [L9] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L9] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 42 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6 IncrementalHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 32 mSDtfsCounter, 6 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 20 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-02 20:39:51,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/interpolation.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc --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 30f6a485d859f7eee00a1696279d966456b3a38851c6233a0367f621da73d6bd --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:39:53,805 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:39:53,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:39:53,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:39:53,865 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:39:53,869 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:39:53,873 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:39:53,881 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:39:53,888 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:39:53,891 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:39:53,893 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:39:53,896 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:39:53,896 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:39:53,902 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:39:53,904 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:39:53,906 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:39:53,908 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:39:53,909 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:39:53,911 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:39:53,920 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:39:53,923 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:39:53,925 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:39:53,928 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:39:53,931 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:39:53,939 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:39:53,943 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:39:53,943 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:39:53,944 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:39:53,946 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:39:53,948 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:39:53,948 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:39:53,949 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:39:53,952 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:39:53,953 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:39:53,954 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:39:53,955 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:39:53,956 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:39:53,956 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:39:53,956 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:39:53,959 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:39:53,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:39:53,961 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-02 20:39:54,011 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:39:54,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:39:54,013 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:39:54,013 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:39:54,014 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:39:54,015 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:39:54,017 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:39:54,017 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:39:54,017 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:39:54,018 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:39:54,019 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:39:54,020 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:39:54,020 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:39:54,020 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:39:54,021 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:39:54,021 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:39:54,021 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 20:39:54,022 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 20:39:54,022 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 20:39:54,022 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:39:54,022 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:39:54,023 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:39:54,023 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:39:54,023 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:39:54,024 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:39:54,024 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:39:54,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:39:54,025 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:39:54,025 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:39:54,025 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:39:54,026 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 20:39:54,026 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 20:39:54,026 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:39:54,027 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:39:54,027 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:39:54,027 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 20:39:54,027 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30f6a485d859f7eee00a1696279d966456b3a38851c6233a0367f621da73d6bd [2022-11-02 20:39:54,442 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:39:54,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:39:54,478 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:39:54,480 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:39:54,481 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:39:54,483 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/float-benchs/interpolation.c [2022-11-02 20:39:54,576 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/data/2bb3e0732/c5c4493e95aa4dcebfef694c535b17d8/FLAGad6dc5d9a [2022-11-02 20:39:55,287 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:39:55,289 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/sv-benchmarks/c/float-benchs/interpolation.c [2022-11-02 20:39:55,297 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/data/2bb3e0732/c5c4493e95aa4dcebfef694c535b17d8/FLAGad6dc5d9a [2022-11-02 20:39:55,614 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/data/2bb3e0732/c5c4493e95aa4dcebfef694c535b17d8 [2022-11-02 20:39:55,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:39:55,620 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:39:55,623 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:39:55,623 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:39:55,633 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:39:55,634 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:39:55" (1/1) ... [2022-11-02 20:39:55,636 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6de9dc3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:55, skipping insertion in model container [2022-11-02 20:39:55,636 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:39:55" (1/1) ... [2022-11-02 20:39:55,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:39:55,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:39:55,811 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/sv-benchmarks/c/float-benchs/interpolation.c[449,462] [2022-11-02 20:39:55,837 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:39:55,863 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:39:55,900 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/sv-benchmarks/c/float-benchs/interpolation.c[449,462] [2022-11-02 20:39:55,918 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:39:55,935 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:39:55,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:55 WrapperNode [2022-11-02 20:39:55,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:39:55,936 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:39:55,936 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:39:55,937 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:39:55,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:55" (1/1) ... [2022-11-02 20:39:55,957 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:55" (1/1) ... [2022-11-02 20:39:55,982 INFO L138 Inliner]: procedures = 19, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 77 [2022-11-02 20:39:55,982 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:39:55,983 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:39:55,983 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:39:55,984 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:39:55,994 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:55" (1/1) ... [2022-11-02 20:39:55,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:55" (1/1) ... [2022-11-02 20:39:55,999 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:55" (1/1) ... [2022-11-02 20:39:55,999 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:55" (1/1) ... [2022-11-02 20:39:56,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:55" (1/1) ... [2022-11-02 20:39:56,015 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:55" (1/1) ... [2022-11-02 20:39:56,017 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:55" (1/1) ... [2022-11-02 20:39:56,019 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:55" (1/1) ... [2022-11-02 20:39:56,023 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:39:56,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:39:56,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:39:56,024 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:39:56,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:55" (1/1) ... [2022-11-02 20:39:56,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:39:56,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:39:56,060 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:39:56,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:39:56,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:39:56,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2022-11-02 20:39:56,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-02 20:39:56,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:39:56,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2022-11-02 20:39:56,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:39:56,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:39:56,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:39:56,211 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:39:56,213 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:39:58,655 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:39:58,667 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:39:58,667 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:39:58,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:39:58 BoogieIcfgContainer [2022-11-02 20:39:58,670 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:39:58,691 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:39:58,691 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:39:58,695 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:39:58,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:39:55" (1/3) ... [2022-11-02 20:39:58,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c94b2fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:39:58, skipping insertion in model container [2022-11-02 20:39:58,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:55" (2/3) ... [2022-11-02 20:39:58,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c94b2fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:39:58, skipping insertion in model container [2022-11-02 20:39:58,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:39:58" (3/3) ... [2022-11-02 20:39:58,698 INFO L112 eAbstractionObserver]: Analyzing ICFG interpolation.c [2022-11-02 20:39:58,744 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:39:58,745 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:39:58,849 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:39:58,858 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@661784f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:39:58,859 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:39:58,864 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:58,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-02 20:39:58,872 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:58,873 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:58,874 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:58,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:58,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1235833265, now seen corresponding path program 1 times [2022-11-02 20:39:58,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:39:58,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [806173151] [2022-11-02 20:39:58,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:58,898 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:39:58,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:39:58,903 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:39:58,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 20:39:59,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:59,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-02 20:39:59,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:59,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:59,585 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:39:59,586 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:39:59,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [806173151] [2022-11-02 20:39:59,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [806173151] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:59,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:59,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:39:59,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588012926] [2022-11-02 20:39:59,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:59,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:39:59,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:39:59,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:39:59,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:39:59,645 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:59,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:59,664 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2022-11-02 20:39:59,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:39:59,673 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-02 20:39:59,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:59,685 INFO L225 Difference]: With dead ends: 29 [2022-11-02 20:39:59,685 INFO L226 Difference]: Without dead ends: 13 [2022-11-02 20:39:59,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:39:59,692 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:59,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:39:59,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-11-02 20:39:59,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-11-02 20:39:59,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:59,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2022-11-02 20:39:59,731 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 10 [2022-11-02 20:39:59,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:59,733 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2022-11-02 20:39:59,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:59,733 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2022-11-02 20:39:59,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-02 20:39:59,734 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:59,735 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:59,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:39:59,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:39:59,948 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:59,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:59,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1178902664, now seen corresponding path program 1 times [2022-11-02 20:39:59,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:39:59,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [580082991] [2022-11-02 20:39:59,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:59,951 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:39:59,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:39:59,953 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:39:59,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 20:40:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:00,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:40:00,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:00,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:00,466 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:40:00,466 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:40:00,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [580082991] [2022-11-02 20:40:00,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [580082991] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:00,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:00,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:40:00,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116469223] [2022-11-02 20:40:00,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:00,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:40:00,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:40:00,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:40:00,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:40:00,471 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:02,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:40:04,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:40:04,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:40:04,653 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2022-11-02 20:40:04,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:40:04,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-02 20:40:04,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:40:04,695 INFO L225 Difference]: With dead ends: 24 [2022-11-02 20:40:04,695 INFO L226 Difference]: Without dead ends: 20 [2022-11-02 20:40:04,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:40:04,697 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:40:04,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 21 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-11-02 20:40:04,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-02 20:40:04,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 14. [2022-11-02 20:40:04,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:04,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2022-11-02 20:40:04,706 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 10 [2022-11-02 20:40:04,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:40:04,706 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2022-11-02 20:40:04,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:04,707 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2022-11-02 20:40:04,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:40:04,708 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:04,708 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:04,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:04,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:40:04,923 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:40:04,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:04,924 INFO L85 PathProgramCache]: Analyzing trace with hash 2110328889, now seen corresponding path program 1 times [2022-11-02 20:40:04,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:40:04,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [177706877] [2022-11-02 20:40:04,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:04,925 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:40:04,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:40:04,927 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:40:04,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 20:40:05,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:05,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-02 20:40:05,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:09,128 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-02 20:40:09,129 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 392 treesize of output 192 [2022-11-02 20:41:30,585 WARN L833 $PredicateComparison]: unable to prove that (or (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32)) (exists ((v_arrayElimCell_3 (_ BitVec 32))) (let ((.cse0 (fp ((_ extract 31 31) v_arrayElimCell_3) ((_ extract 30 23) v_arrayElimCell_3) ((_ extract 22 0) v_arrayElimCell_3)))) (and (exists ((|ULTIMATE.start_main_~t~0#1| (_ FloatingPoint 8 24))) (and (fp.leq |ULTIMATE.start_main_~t~0#1| .cse0) (exists ((v_arrayElimCell_1 (_ BitVec 32))) (let ((.cse1 (fp ((_ extract 31 31) v_arrayElimCell_1) ((_ extract 30 23) v_arrayElimCell_1) ((_ extract 22 0) v_arrayElimCell_1)))) (and (fp.geq |ULTIMATE.start_main_~t~0#1| .cse1) (= .cse1 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv5 32))) (not (fp.leq (fp.div roundNearestTiesToEven (fp.sub roundNearestTiesToEven |ULTIMATE.start_main_~t~0#1| .cse1) (fp.sub roundNearestTiesToEven .cse0 .cse1)) ((_ to_fp 8 24) roundNearestTiesToEven 1.0)))))))) (= ((_ to_fp 8 24) roundNearestTiesToEven (_ bv10 32)) .cse0))))) (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32))) is different from false [2022-11-02 20:41:53,671 WARN L833 $PredicateComparison]: unable to prove that (exists ((v_arrayElimCell_1 (_ BitVec 32)) (|ULTIMATE.start_main_~t~0#1| (_ FloatingPoint 8 24)) (v_arrayElimCell_3 (_ BitVec 32))) (let ((.cse1 (fp ((_ extract 31 31) v_arrayElimCell_1) ((_ extract 30 23) v_arrayElimCell_1) ((_ extract 22 0) v_arrayElimCell_1))) (.cse0 (fp ((_ extract 31 31) v_arrayElimCell_3) ((_ extract 30 23) v_arrayElimCell_3) ((_ extract 22 0) v_arrayElimCell_3)))) (and (fp.leq |ULTIMATE.start_main_~t~0#1| .cse0) (fp.geq |ULTIMATE.start_main_~t~0#1| .cse1) (= .cse1 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv5 32))) (not (fp.leq (fp.div roundNearestTiesToEven (fp.sub roundNearestTiesToEven |ULTIMATE.start_main_~t~0#1| .cse1) (fp.sub roundNearestTiesToEven .cse0 .cse1)) ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (= ((_ to_fp 8 24) roundNearestTiesToEven (_ bv10 32)) .cse0)))) is different from false [2022-11-02 20:41:55,693 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_arrayElimCell_1 (_ BitVec 32)) (|ULTIMATE.start_main_~t~0#1| (_ FloatingPoint 8 24)) (v_arrayElimCell_3 (_ BitVec 32))) (let ((.cse1 (fp ((_ extract 31 31) v_arrayElimCell_1) ((_ extract 30 23) v_arrayElimCell_1) ((_ extract 22 0) v_arrayElimCell_1))) (.cse0 (fp ((_ extract 31 31) v_arrayElimCell_3) ((_ extract 30 23) v_arrayElimCell_3) ((_ extract 22 0) v_arrayElimCell_3)))) (and (fp.leq |ULTIMATE.start_main_~t~0#1| .cse0) (fp.geq |ULTIMATE.start_main_~t~0#1| .cse1) (= .cse1 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv5 32))) (not (fp.leq (fp.div roundNearestTiesToEven (fp.sub roundNearestTiesToEven |ULTIMATE.start_main_~t~0#1| .cse1) (fp.sub roundNearestTiesToEven .cse0 .cse1)) ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (= ((_ to_fp 8 24) roundNearestTiesToEven (_ bv10 32)) .cse0)))) is different from true [2022-11-02 20:41:55,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:55,694 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:41:55,695 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:41:55,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [177706877] [2022-11-02 20:41:55,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [177706877] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:55,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:55,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:41:55,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563697525] [2022-11-02 20:41:55,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:55,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:41:55,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:41:55,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:41:55,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=62, Unknown=3, NotChecked=34, Total=132 [2022-11-02 20:41:55,698 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 12 states, 11 states have (on average 1.0) internal successors, (11), 11 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:00,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:42:00,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:42:00,605 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2022-11-02 20:42:00,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:42:00,606 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.0) internal successors, (11), 11 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 20:42:00,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:42:00,607 INFO L225 Difference]: With dead ends: 28 [2022-11-02 20:42:00,607 INFO L226 Difference]: Without dead ends: 24 [2022-11-02 20:42:00,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=77, Invalid=168, Unknown=3, NotChecked=58, Total=306 [2022-11-02 20:42:00,609 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 29 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:42:00,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 22 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 67 Invalid, 1 Unknown, 31 Unchecked, 2.7s Time] [2022-11-02 20:42:00,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-02 20:42:00,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 19. [2022-11-02 20:42:00,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:00,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-11-02 20:42:00,623 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 11 [2022-11-02 20:42:00,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:42:00,624 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-11-02 20:42:00,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.0) internal successors, (11), 11 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:00,626 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-11-02 20:42:00,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:42:00,627 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:42:00,627 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:00,644 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-11-02 20:42:00,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:42:00,829 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:42:00,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:00,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1504580037, now seen corresponding path program 1 times [2022-11-02 20:42:00,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:42:00,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [907257129] [2022-11-02 20:42:00,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:00,831 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:42:00,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:42:00,832 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:42:00,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 20:42:01,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:01,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:42:01,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:42:01,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:01,324 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:42:01,324 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:42:01,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [907257129] [2022-11-02 20:42:01,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [907257129] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:01,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:01,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:42:01,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844207535] [2022-11-02 20:42:01,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:01,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:42:01,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:42:01,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:42:01,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:42:01,327 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:01,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:42:01,420 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-11-02 20:42:01,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:42:01,422 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 20:42:01,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:42:01,423 INFO L225 Difference]: With dead ends: 26 [2022-11-02 20:42:01,423 INFO L226 Difference]: Without dead ends: 15 [2022-11-02 20:42:01,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:42:01,424 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 1 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:42:01,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 38 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:42:01,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-02 20:42:01,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-02 20:42:01,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:01,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2022-11-02 20:42:01,434 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2022-11-02 20:42:01,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:42:01,434 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2022-11-02 20:42:01,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:01,435 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2022-11-02 20:42:01,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:42:01,445 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:42:01,446 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:01,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:42:01,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:42:01,659 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:42:01,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:01,659 INFO L85 PathProgramCache]: Analyzing trace with hash 854582592, now seen corresponding path program 1 times [2022-11-02 20:42:01,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:42:01,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1076732291] [2022-11-02 20:42:01,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:01,660 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:42:01,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:42:01,662 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:42:01,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 20:42:02,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:02,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:42:02,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:42:02,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:02,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:42:02,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:02,371 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:42:02,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1076732291] [2022-11-02 20:42:02,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1076732291] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:42:02,372 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:42:02,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-02 20:42:02,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195965486] [2022-11-02 20:42:02,372 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:42:02,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:42:02,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:42:02,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:42:02,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:42:02,374 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:04,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:42:04,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:42:04,767 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2022-11-02 20:42:04,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:42:04,769 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 20:42:04,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:42:04,771 INFO L225 Difference]: With dead ends: 30 [2022-11-02 20:42:04,771 INFO L226 Difference]: Without dead ends: 26 [2022-11-02 20:42:04,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:42:04,772 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 13 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:42:04,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 30 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-11-02 20:42:04,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-02 20:42:04,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2022-11-02 20:42:04,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:04,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-11-02 20:42:04,788 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 13 [2022-11-02 20:42:04,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:42:04,788 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-11-02 20:42:04,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:04,789 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-11-02 20:42:04,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-02 20:42:04,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:42:04,791 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:04,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:42:05,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:42:05,007 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:42:05,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:05,008 INFO L85 PathProgramCache]: Analyzing trace with hash 723862385, now seen corresponding path program 1 times [2022-11-02 20:42:05,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:42:05,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1837591759] [2022-11-02 20:42:05,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:05,008 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:42:05,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:42:05,010 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:42:05,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf297adc-fada-4524-a436-9799c1923ae8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 20:42:05,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:05,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-02 20:42:05,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:42:11,242 INFO L356 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2022-11-02 20:42:11,243 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 439 treesize of output 215 [2022-11-02 20:42:22,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:22,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:42:33,142 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse3 (bvmul (_ bv4 32) |c_ULTIMATE.start_main_~i~0#1|))) (let ((.cse1 (let ((.cse4 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#min~0#1.base|) (bvadd |c_ULTIMATE.start_main_~#min~0#1.offset| .cse3)))) (fp ((_ extract 31 31) .cse4) ((_ extract 30 23) .cse4) ((_ extract 22 0) .cse4))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~t~0#1| .cse1) (fp.sub c_currentRoundingMode (let ((.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#max~0#1.base|) (bvadd |c_ULTIMATE.start_main_~#max~0#1.offset| .cse3)))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))) .cse1)))))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq .cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0)))) is different from false [2022-11-02 20:42:35,189 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse3 (bvmul (_ bv4 32) |c_ULTIMATE.start_main_~i~0#1|))) (let ((.cse1 (let ((.cse4 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#min~0#1.base|) (bvadd |c_ULTIMATE.start_main_~#min~0#1.offset| .cse3)))) (fp ((_ extract 31 31) .cse4) ((_ extract 30 23) .cse4) ((_ extract 22 0) .cse4))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~t~0#1| .cse1) (fp.sub c_currentRoundingMode (let ((.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#max~0#1.base|) (bvadd |c_ULTIMATE.start_main_~#max~0#1.offset| .cse3)))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))) .cse1)))))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq .cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0)))) is different from true [2022-11-02 20:42:49,824 WARN L833 $PredicateComparison]: unable to prove that (or (let ((.cse0 (let ((.cse3 (bvmul (_ bv4 32) |c_ULTIMATE.start_main_~i~0#1|))) (let ((.cse1 (let ((.cse4 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#min~0#1.base|) (bvadd |c_ULTIMATE.start_main_~#min~0#1.offset| .cse3)))) (fp ((_ extract 31 31) .cse4) ((_ extract 30 23) .cse4) ((_ extract 22 0) .cse4))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~t~0#1| .cse1) (fp.sub c_currentRoundingMode (let ((.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#max~0#1.base|) (bvadd |c_ULTIMATE.start_main_~#max~0#1.offset| .cse3)))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))) .cse1)))))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq .cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0)))) (not (fp.leq |c_ULTIMATE.start_main_~t~0#1| |c_ULTIMATE.start_main_#t~mem9#1|))) is different from false [2022-11-02 20:42:51,877 WARN L855 $PredicateComparison]: unable to prove that (or (let ((.cse0 (let ((.cse3 (bvmul (_ bv4 32) |c_ULTIMATE.start_main_~i~0#1|))) (let ((.cse1 (let ((.cse4 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#min~0#1.base|) (bvadd |c_ULTIMATE.start_main_~#min~0#1.offset| .cse3)))) (fp ((_ extract 31 31) .cse4) ((_ extract 30 23) .cse4) ((_ extract 22 0) .cse4))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~t~0#1| .cse1) (fp.sub c_currentRoundingMode (let ((.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#max~0#1.base|) (bvadd |c_ULTIMATE.start_main_~#max~0#1.offset| .cse3)))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))) .cse1)))))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq .cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0)))) (not (fp.leq |c_ULTIMATE.start_main_~t~0#1| |c_ULTIMATE.start_main_#t~mem9#1|))) is different from true [2022-11-02 20:43:05,016 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse4 (bvmul (_ bv4 32) |c_ULTIMATE.start_main_~i~0#1|))) (let ((.cse2 (let ((.cse5 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#max~0#1.base|) (bvadd |c_ULTIMATE.start_main_~#max~0#1.offset| .cse4)))) (fp ((_ extract 31 31) .cse5) ((_ extract 30 23) .cse5) ((_ extract 22 0) .cse5))))) (or (let ((.cse0 (let ((.cse1 (let ((.cse3 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#min~0#1.base|) (bvadd |c_ULTIMATE.start_main_~#min~0#1.offset| .cse4)))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~t~0#1| .cse1) (fp.sub c_currentRoundingMode .cse2 .cse1))))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq .cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0)))) (not (fp.leq |c_ULTIMATE.start_main_~t~0#1| .cse2))))) is different from false [2022-11-02 20:43:20,251 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse4 (bvmul (_ bv4 32) |c_ULTIMATE.start_main_~i~0#1|))) (let ((.cse0 (let ((.cse5 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#max~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~#max~0#1.offset| .cse4)))) (fp ((_ extract 31 31) .cse5) ((_ extract 30 23) .cse5) ((_ extract 22 0) .cse5))))) (or (not (fp.leq |c_ULTIMATE.start_main_~t~0#1| .cse0)) (let ((.cse1 (let ((.cse2 (let ((.cse3 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#min~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~#min~0#1.offset| .cse4)))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~t~0#1| .cse2) (fp.sub c_currentRoundingMode .cse0 .cse2))))) (and (fp.leq .cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0)) (fp.geq .cse1 (_ +zero 8 24))))))) is different from false [2022-11-02 20:43:39,270 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse4 (bvmul (_ bv4 32) |c_ULTIMATE.start_main_~i~0#1|))) (let ((.cse0 (let ((.cse5 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#max~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~#max~0#1.offset| .cse4)))) (fp ((_ extract 31 31) .cse5) ((_ extract 30 23) .cse5) ((_ extract 22 0) .cse5))))) (or (not (fp.leq |c_ULTIMATE.start_main_~t~0#1| .cse0)) (fp.leq |c_ULTIMATE.start_main_~t~0#1| |c_ULTIMATE.start_main_#t~mem9#1|) (let ((.cse1 (let ((.cse2 (let ((.cse3 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#min~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~#min~0#1.offset| .cse4)))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~t~0#1| .cse2) (fp.sub c_currentRoundingMode .cse0 .cse2))))) (and (fp.leq .cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0)) (fp.geq .cse1 (_ +zero 8 24))))))) is different from false [2022-11-02 20:43:56,032 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse2 (select |c_#memory_int| |c_ULTIMATE.start_main_~#max~0#1.base|)) (.cse3 (bvmul (_ bv4 32) |c_ULTIMATE.start_main_~i~0#1|))) (let ((.cse0 (let ((.cse7 (select .cse2 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~#max~0#1.offset| .cse3)))) (fp ((_ extract 31 31) .cse7) ((_ extract 30 23) .cse7) ((_ extract 22 0) .cse7))))) (or (not (fp.leq |c_ULTIMATE.start_main_~t~0#1| .cse0)) (fp.leq |c_ULTIMATE.start_main_~t~0#1| (let ((.cse1 (select .cse2 (bvadd |c_ULTIMATE.start_main_~#max~0#1.offset| .cse3)))) (fp ((_ extract 31 31) .cse1) ((_ extract 30 23) .cse1) ((_ extract 22 0) .cse1)))) (let ((.cse4 (let ((.cse5 (let ((.cse6 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#min~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~#min~0#1.offset| .cse3)))) (fp ((_ extract 31 31) .cse6) ((_ extract 30 23) .cse6) ((_ extract 22 0) .cse6))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~t~0#1| .cse5) (fp.sub c_currentRoundingMode .cse0 .cse5))))) (and (fp.leq .cse4 ((_ to_fp 8 24) c_currentRoundingMode 1.0)) (fp.geq .cse4 (_ +zero 8 24))))))) is different from true [2022-11-02 20:44:11,208 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse5 (select |c_#memory_int| |c_ULTIMATE.start_main_~#max~0#1.base|))) (let ((.cse2 (let ((.cse6 (select .cse5 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~#max~0#1.offset|)))) (fp ((_ extract 31 31) .cse6) ((_ extract 30 23) .cse6) ((_ extract 22 0) .cse6))))) (or (let ((.cse0 (let ((.cse1 (let ((.cse3 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#min~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~#min~0#1.offset|)))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~t~0#1| .cse1) (fp.sub c_currentRoundingMode .cse2 .cse1))))) (and (fp.leq .cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0)) (fp.geq .cse0 (_ +zero 8 24)))) (not (fp.leq |c_ULTIMATE.start_main_~t~0#1| .cse2)) (fp.leq |c_ULTIMATE.start_main_~t~0#1| (let ((.cse4 (select .cse5 |c_ULTIMATE.start_main_~#max~0#1.offset|))) (fp ((_ extract 31 31) .cse4) ((_ extract 30 23) .cse4) ((_ extract 22 0) .cse4))))))) is different from false [2022-11-02 20:44:13,261 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse5 (select |c_#memory_int| |c_ULTIMATE.start_main_~#max~0#1.base|))) (let ((.cse2 (let ((.cse6 (select .cse5 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~#max~0#1.offset|)))) (fp ((_ extract 31 31) .cse6) ((_ extract 30 23) .cse6) ((_ extract 22 0) .cse6))))) (or (let ((.cse0 (let ((.cse1 (let ((.cse3 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#min~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~#min~0#1.offset|)))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~t~0#1| .cse1) (fp.sub c_currentRoundingMode .cse2 .cse1))))) (and (fp.leq .cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0)) (fp.geq .cse0 (_ +zero 8 24)))) (not (fp.leq |c_ULTIMATE.start_main_~t~0#1| .cse2)) (fp.leq |c_ULTIMATE.start_main_~t~0#1| (let ((.cse4 (select .cse5 |c_ULTIMATE.start_main_~#max~0#1.offset|))) (fp ((_ extract 31 31) .cse4) ((_ extract 30 23) .cse4) ((_ extract 22 0) .cse4))))))) is different from true