./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/eqn5f.c --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version 63182f13
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/eqn5f.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y --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 d9916de8363461179d8fb51bbbca62f9fac89d50ba7961a3d354541c45153780
--- Real Ultimate output ---
This is Ultimate 0.2.1-dev-63182f1
[2021-11-13 17:44:52,392 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-11-13 17:44:52,396 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-11-13 17:44:52,465 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-11-13 17:44:52,466 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-11-13 17:44:52,472 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-11-13 17:44:52,474 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-11-13 17:44:52,479 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-11-13 17:44:52,483 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-11-13 17:44:52,490 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-11-13 17:44:52,492 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-11-13 17:44:52,494 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-11-13 17:44:52,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-11-13 17:44:52,498 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-11-13 17:44:52,501 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-11-13 17:44:52,506 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-11-13 17:44:52,509 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-11-13 17:44:52,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-11-13 17:44:52,513 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-11-13 17:44:52,524 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-11-13 17:44:52,526 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-11-13 17:44:52,528 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-11-13 17:44:52,532 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-11-13 17:44:52,534 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-11-13 17:44:52,544 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-11-13 17:44:52,545 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-11-13 17:44:52,545 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-11-13 17:44:52,548 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-11-13 17:44:52,548 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-11-13 17:44:52,550 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-11-13 17:44:52,551 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-11-13 17:44:52,552 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-11-13 17:44:52,554 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-11-13 17:44:52,555 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2021-11-13 17:44:52,557 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-11-13 17:44:52,558 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2021-11-13 17:44:52,558 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-11-13 17:44:52,559 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-11-13 17:44:52,559 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2021-11-13 17:44:52,560 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2021-11-13 17:44:52,561 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-11-13 17:44:52,562 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-11-13 17:44:52,605 INFO L113 SettingsManager]: Loading preferences was successful
[2021-11-13 17:44:52,605 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-11-13 17:44:52,606 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-11-13 17:44:52,606 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-11-13 17:44:52,607 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-11-13 17:44:52,608 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-11-13 17:44:52,609 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-11-13 17:44:52,609 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-11-13 17:44:52,609 INFO L138 SettingsManager]: * Use SBE=true
[2021-11-13 17:44:52,610 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-11-13 17:44:52,611 INFO L138 SettingsManager]: * sizeof long=4
[2021-11-13 17:44:52,611 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-11-13 17:44:52,611 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-11-13 17:44:52,612 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-11-13 17:44:52,612 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-11-13 17:44:52,612 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-11-13 17:44:52,613 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-11-13 17:44:52,613 INFO L138 SettingsManager]: * sizeof long double=12
[2021-11-13 17:44:52,613 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-11-13 17:44:52,613 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-11-13 17:44:52,614 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-11-13 17:44:52,614 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-11-13 17:44:52,614 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-11-13 17:44:52,614 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-11-13 17:44:52,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-13 17:44:52,615 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-11-13 17:44:52,615 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-11-13 17:44:52,616 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-11-13 17:44:52,616 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2021-11-13 17:44:52,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-11-13 17:44:52,616 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF
[2021-11-13 17:44:52,617 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2021-11-13 17:44:52,617 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-11-13 17:44:52,617 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2021-11-13 17:44:52,618 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_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d9916de8363461179d8fb51bbbca62f9fac89d50ba7961a3d354541c45153780
[2021-11-13 17:44:53,005 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-11-13 17:44:53,031 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-11-13 17:44:53,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-11-13 17:44:53,036 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-11-13 17:44:53,037 INFO L275 PluginConnector]: CDTParser initialized
[2021-11-13 17:44:53,040 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/array-fpi/eqn5f.c
[2021-11-13 17:44:53,128 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/data/3e50f14d9/2369da81f3634c4c9d12e12dd7a4e886/FLAG6d71335e3
[2021-11-13 17:44:53,819 INFO L306 CDTParser]: Found 1 translation units.
[2021-11-13 17:44:53,820 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/sv-benchmarks/c/array-fpi/eqn5f.c
[2021-11-13 17:44:53,828 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/data/3e50f14d9/2369da81f3634c4c9d12e12dd7a4e886/FLAG6d71335e3
[2021-11-13 17:44:54,144 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/data/3e50f14d9/2369da81f3634c4c9d12e12dd7a4e886
[2021-11-13 17:44:54,147 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-11-13 17:44:54,151 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2021-11-13 17:44:54,153 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-11-13 17:44:54,154 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-11-13 17:44:54,158 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-11-13 17:44:54,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:44:54" (1/1) ...
[2021-11-13 17:44:54,161 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@397c3513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:44:54, skipping insertion in model container
[2021-11-13 17:44:54,161 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:44:54" (1/1) ...
[2021-11-13 17:44:54,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-11-13 17:44:54,187 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-11-13 17:44:54,428 WARN L228 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_a15fcde3-8435-468f-9ab3-f28440209ebb/sv-benchmarks/c/array-fpi/eqn5f.c[588,601]
[2021-11-13 17:44:54,464 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-11-13 17:44:54,478 INFO L203 MainTranslator]: Completed pre-run
[2021-11-13 17:44:54,493 WARN L228 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_a15fcde3-8435-468f-9ab3-f28440209ebb/sv-benchmarks/c/array-fpi/eqn5f.c[588,601]
[2021-11-13 17:44:54,508 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-11-13 17:44:54,532 INFO L208 MainTranslator]: Completed translation
[2021-11-13 17:44:54,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:44:54 WrapperNode
[2021-11-13 17:44:54,533 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-11-13 17:44:54,535 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-11-13 17:44:54,535 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-11-13 17:44:54,535 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2021-11-13 17:44:54,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:44:54" (1/1) ...
[2021-11-13 17:44:54,568 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:44:54" (1/1) ...
[2021-11-13 17:44:54,612 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-11-13 17:44:54,613 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-11-13 17:44:54,614 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-11-13 17:44:54,614 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-11-13 17:44:54,624 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:44:54" (1/1) ...
[2021-11-13 17:44:54,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:44:54" (1/1) ...
[2021-11-13 17:44:54,633 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:44:54" (1/1) ...
[2021-11-13 17:44:54,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:44:54" (1/1) ...
[2021-11-13 17:44:54,650 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:44:54" (1/1) ...
[2021-11-13 17:44:54,655 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:44:54" (1/1) ...
[2021-11-13 17:44:54,671 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:44:54" (1/1) ...
[2021-11-13 17:44:54,673 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-11-13 17:44:54,675 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-11-13 17:44:54,675 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-11-13 17:44:54,675 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-11-13 17:44:54,681 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:44:54" (1/1) ...
[2021-11-13 17:44:54,694 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-13 17:44:54,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 17:44:54,724 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-11-13 17:44:54,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-11-13 17:44:54,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-11-13 17:44:54,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-11-13 17:44:54,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2021-11-13 17:44:54,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2021-11-13 17:44:54,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-11-13 17:44:54,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-11-13 17:44:54,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2021-11-13 17:44:55,197 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-11-13 17:44:55,197 INFO L299 CfgBuilder]: Removed 3 assume(true) statements.
[2021-11-13 17:44:55,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:44:55 BoogieIcfgContainer
[2021-11-13 17:44:55,200 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-11-13 17:44:55,202 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-11-13 17:44:55,203 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-11-13 17:44:55,207 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-11-13 17:44:55,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:44:54" (1/3) ...
[2021-11-13 17:44:55,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3970a62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:44:55, skipping insertion in model container
[2021-11-13 17:44:55,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:44:54" (2/3) ...
[2021-11-13 17:44:55,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3970a62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:44:55, skipping insertion in model container
[2021-11-13 17:44:55,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:44:55" (3/3) ...
[2021-11-13 17:44:55,211 INFO L111 eAbstractionObserver]: Analyzing ICFG eqn5f.c
[2021-11-13 17:44:55,217 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-11-13 17:44:55,218 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-11-13 17:44:55,298 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-11-13 17:44:55,312 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR
[2021-11-13 17:44:55,312 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-11-13 17:44:55,332 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:44:55,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2021-11-13 17:44:55,339 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:44:55,340 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:44:55,340 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:44:55,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:44:55,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1828546148, now seen corresponding path program 1 times
[2021-11-13 17:44:55,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:44:55,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906227781]
[2021-11-13 17:44:55,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:44:55,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:44:55,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:44:55,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:44:55,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:44:55,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906227781]
[2021-11-13 17:44:55,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906227781] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 17:44:55,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 17:44:55,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-11-13 17:44:55,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475103887]
[2021-11-13 17:44:55,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 17:44:55,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2021-11-13 17:44:55,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:44:55,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2021-11-13 17:44:55,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2021-11-13 17:44:55,603 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 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 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:44:55,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:44:55,622 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions.
[2021-11-13 17:44:55,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2021-11-13 17:44:55,624 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12
[2021-11-13 17:44:55,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:44:55,634 INFO L225 Difference]: With dead ends: 38
[2021-11-13 17:44:55,634 INFO L226 Difference]: Without dead ends: 17
[2021-11-13 17:44:55,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2021-11-13 17:44:55,642 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.80ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:44:55,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.80ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time]
[2021-11-13 17:44:55,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states.
[2021-11-13 17:44:55,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17.
[2021-11-13 17:44:55,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:44:55,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions.
[2021-11-13 17:44:55,683 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12
[2021-11-13 17:44:55,683 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:44:55,684 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions.
[2021-11-13 17:44:55,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:44:55,684 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions.
[2021-11-13 17:44:55,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2021-11-13 17:44:55,685 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:44:55,686 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:44:55,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-11-13 17:44:55,687 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:44:55,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:44:55,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1148487778, now seen corresponding path program 1 times
[2021-11-13 17:44:55,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:44:55,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006184846]
[2021-11-13 17:44:55,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:44:55,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:44:55,721 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 17:44:55,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1604988958]
[2021-11-13 17:44:55,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:44:55,722 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 17:44:55,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 17:44:55,724 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 17:44:55,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2021-11-13 17:44:55,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:44:55,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core
[2021-11-13 17:44:55,847 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 17:44:55,942 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size
[2021-11-13 17:44:55,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15
[2021-11-13 17:44:56,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:44:56,157 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2021-11-13 17:44:56,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:44:56,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006184846]
[2021-11-13 17:44:56,161 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-11-13 17:44:56,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604988958]
[2021-11-13 17:44:56,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604988958] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 17:44:56,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 17:44:56,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-11-13 17:44:56,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550316025]
[2021-11-13 17:44:56,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 17:44:56,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-11-13 17:44:56,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:44:56,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-11-13 17:44:56,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2021-11-13 17:44:56,169 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:44:56,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:44:56,315 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions.
[2021-11-13 17:44:56,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2021-11-13 17:44:56,316 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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 12
[2021-11-13 17:44:56,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:44:56,319 INFO L225 Difference]: With dead ends: 34
[2021-11-13 17:44:56,319 INFO L226 Difference]: Without dead ends: 32
[2021-11-13 17:44:56,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2021-11-13 17:44:56,324 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 12 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 68.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.42ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 88.39ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:44:56,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 56 Invalid, 36 Unknown, 0 Unchecked, 5.42ms Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 88.39ms Time]
[2021-11-13 17:44:56,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states.
[2021-11-13 17:44:56,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23.
[2021-11-13 17:44:56,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:44:56,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions.
[2021-11-13 17:44:56,347 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12
[2021-11-13 17:44:56,347 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:44:56,348 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions.
[2021-11-13 17:44:56,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:44:56,348 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions.
[2021-11-13 17:44:56,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2021-11-13 17:44:56,349 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:44:56,349 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:44:56,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2021-11-13 17:44:56,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 17:44:56,568 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:44:56,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:44:56,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1755224028, now seen corresponding path program 1 times
[2021-11-13 17:44:56,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:44:56,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741423217]
[2021-11-13 17:44:56,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:44:56,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:44:56,591 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 17:44:56,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [334220375]
[2021-11-13 17:44:56,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:44:56,592 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 17:44:56,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 17:44:56,593 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 17:44:56,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2021-11-13 17:44:56,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:44:56,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core
[2021-11-13 17:44:56,680 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 17:44:56,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:44:56,769 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2021-11-13 17:44:56,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:44:56,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741423217]
[2021-11-13 17:44:56,770 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-11-13 17:44:56,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334220375]
[2021-11-13 17:44:56,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334220375] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 17:44:56,771 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 17:44:56,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-11-13 17:44:56,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839752181]
[2021-11-13 17:44:56,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 17:44:56,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-11-13 17:44:56,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:44:56,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-11-13 17:44:56,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2021-11-13 17:44:56,773 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:44:56,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:44:56,853 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions.
[2021-11-13 17:44:56,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2021-11-13 17:44:56,854 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 14
[2021-11-13 17:44:56,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:44:56,855 INFO L225 Difference]: With dead ends: 49
[2021-11-13 17:44:56,855 INFO L226 Difference]: Without dead ends: 40
[2021-11-13 17:44:56,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2021-11-13 17:44:56,857 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 26 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.45ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.30ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:44:56,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 29 Invalid, 43 Unknown, 0 Unchecked, 1.45ms Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 50.30ms Time]
[2021-11-13 17:44:56,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states.
[2021-11-13 17:44:56,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 23.
[2021-11-13 17:44:56,862 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)
[2021-11-13 17:44:56,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions.
[2021-11-13 17:44:56,863 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 14
[2021-11-13 17:44:56,864 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:44:56,864 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions.
[2021-11-13 17:44:56,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:44:56,864 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions.
[2021-11-13 17:44:56,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2021-11-13 17:44:56,865 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:44:56,865 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:44:56,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2021-11-13 17:44:57,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 17:44:57,088 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:44:57,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:44:57,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1842440164, now seen corresponding path program 1 times
[2021-11-13 17:44:57,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:44:57,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954179729]
[2021-11-13 17:44:57,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:44:57,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:44:57,123 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 17:44:57,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [688214174]
[2021-11-13 17:44:57,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:44:57,124 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 17:44:57,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 17:44:57,130 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 17:44:57,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2021-11-13 17:44:57,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:44:57,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core
[2021-11-13 17:44:57,190 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 17:44:57,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:44:57,242 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 17:44:57,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:44:57,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:44:57,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954179729]
[2021-11-13 17:44:57,285 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-11-13 17:44:57,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688214174]
[2021-11-13 17:44:57,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688214174] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 17:44:57,286 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-13 17:44:57,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6
[2021-11-13 17:44:57,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654172880]
[2021-11-13 17:44:57,287 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-13 17:44:57,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2021-11-13 17:44:57,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:44:57,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-11-13 17:44:57,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2021-11-13 17:44:57,288 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:44:57,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:44:57,386 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions.
[2021-11-13 17:44:57,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2021-11-13 17:44:57,387 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14
[2021-11-13 17:44:57,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:44:57,388 INFO L225 Difference]: With dead ends: 44
[2021-11-13 17:44:57,388 INFO L226 Difference]: Without dead ends: 37
[2021-11-13 17:44:57,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90
[2021-11-13 17:44:57,390 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 23 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.03ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.48ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:44:57,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 46 Invalid, 72 Unknown, 0 Unchecked, 2.03ms Time], IncrementalHoareTripleChecker [12 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 56.48ms Time]
[2021-11-13 17:44:57,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2021-11-13 17:44:57,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 24.
[2021-11-13 17:44:57,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:44:57,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions.
[2021-11-13 17:44:57,398 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 14
[2021-11-13 17:44:57,398 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:44:57,398 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions.
[2021-11-13 17:44:57,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:44:57,399 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions.
[2021-11-13 17:44:57,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2021-11-13 17:44:57,399 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:44:57,400 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:44:57,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2021-11-13 17:44:57,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 17:44:57,626 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:44:57,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:44:57,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1667884396, now seen corresponding path program 1 times
[2021-11-13 17:44:57,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:44:57,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593566573]
[2021-11-13 17:44:57,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:44:57,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:44:57,645 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 17:44:57,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [137315709]
[2021-11-13 17:44:57,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:44:57,645 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 17:44:57,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 17:44:57,646 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 17:44:57,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2021-11-13 17:44:57,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:44:57,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core
[2021-11-13 17:44:57,695 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 17:44:57,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:44:57,798 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2021-11-13 17:44:57,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:44:57,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593566573]
[2021-11-13 17:44:57,798 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-11-13 17:44:57,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137315709]
[2021-11-13 17:44:57,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137315709] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 17:44:57,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 17:44:57,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2021-11-13 17:44:57,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102415529]
[2021-11-13 17:44:57,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 17:44:57,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2021-11-13 17:44:57,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:44:57,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-11-13 17:44:57,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2021-11-13 17:44:57,803 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:44:57,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:44:57,895 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions.
[2021-11-13 17:44:57,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2021-11-13 17:44:57,896 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16
[2021-11-13 17:44:57,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:44:57,897 INFO L225 Difference]: With dead ends: 41
[2021-11-13 17:44:57,898 INFO L226 Difference]: Without dead ends: 27
[2021-11-13 17:44:57,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72
[2021-11-13 17:44:57,904 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 18 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.71ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.80ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:44:57,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 32 Invalid, 52 Unknown, 0 Unchecked, 6.71ms Time], IncrementalHoareTripleChecker [8 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 47.80ms Time]
[2021-11-13 17:44:57,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2021-11-13 17:44:57,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19.
[2021-11-13 17:44:57,919 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)
[2021-11-13 17:44:57,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions.
[2021-11-13 17:44:57,920 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 16
[2021-11-13 17:44:57,920 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:44:57,920 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions.
[2021-11-13 17:44:57,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:44:57,921 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions.
[2021-11-13 17:44:57,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2021-11-13 17:44:57,923 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:44:57,923 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:44:57,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2021-11-13 17:44:58,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 17:44:58,144 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:44:58,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:44:58,144 INFO L85 PathProgramCache]: Analyzing trace with hash 586911962, now seen corresponding path program 1 times
[2021-11-13 17:44:58,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:44:58,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849837185]
[2021-11-13 17:44:58,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:44:58,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:44:58,161 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 17:44:58,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [561691696]
[2021-11-13 17:44:58,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:44:58,162 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 17:44:58,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 17:44:58,163 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 17:44:58,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2021-11-13 17:44:58,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:44:58,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 16 conjunts are in the unsatisfiable core
[2021-11-13 17:44:58,240 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 17:44:58,291 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size
[2021-11-13 17:44:58,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15
[2021-11-13 17:44:58,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8
[2021-11-13 17:44:58,416 INFO L354 Elim1Store]: treesize reduction 74, result has 26.0 percent of original size
[2021-11-13 17:44:58,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 41 treesize of output 52
[2021-11-13 17:44:58,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:44:58,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849837185]
[2021-11-13 17:44:58,666 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-11-13 17:44:58,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561691696]
[2021-11-13 17:44:58,666 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [|ULTIMATE.start_main_~i~0#1|]
[2021-11-13 17:44:58,666 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences.
[2021-11-13 17:44:58,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0
[2021-11-13 17:44:58,667 ERROR L172 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible
[2021-11-13 17:44:58,667 INFO L628 BasicCegarLoop]: Counterexample might be feasible
[2021-11-13 17:44:58,675 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2021-11-13 17:44:58,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2021-11-13 17:44:58,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 17:44:58,899 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1]
[2021-11-13 17:44:58,901 INFO L179 ceAbstractionStarter]: Computing trace abstraction results
[2021-11-13 17:44:58,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 05:44:58 BoogieIcfgContainer
[2021-11-13 17:44:58,913 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-11-13 17:44:58,913 INFO L113 PluginConnector]: ------------------------Witness Printer----------------------------
[2021-11-13 17:44:58,913 INFO L271 PluginConnector]: Initializing Witness Printer...
[2021-11-13 17:44:58,914 INFO L275 PluginConnector]: Witness Printer initialized
[2021-11-13 17:44:58,915 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:44:55" (3/4) ...
[2021-11-13 17:44:58,917 INFO L140 WitnessPrinter]: No result that supports witness generation found
[2021-11-13 17:44:58,917 INFO L132 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2021-11-13 17:44:58,918 INFO L158 Benchmark]: Toolchain (without parser) took 4766.99ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 76.3MB in the beginning and 82.3MB in the end (delta: -6.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
[2021-11-13 17:44:58,918 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 113.2MB. Free memory is still 92.3MB. There was no memory consumed. Max. memory is 16.1GB.
[2021-11-13 17:44:58,919 INFO L158 Benchmark]: CACSL2BoogieTranslator took 380.26ms. Allocated memory is still 113.2MB. Free memory was 76.1MB in the beginning and 87.5MB in the end (delta: -11.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2021-11-13 17:44:58,919 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.91ms. Allocated memory is still 113.2MB. Free memory was 87.5MB in the beginning and 86.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB.
[2021-11-13 17:44:58,919 INFO L158 Benchmark]: Boogie Preprocessor took 60.21ms. Allocated memory is still 113.2MB. Free memory was 85.8MB in the beginning and 84.8MB in the end (delta: 1.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
[2021-11-13 17:44:58,920 INFO L158 Benchmark]: RCFGBuilder took 525.81ms. Allocated memory is still 113.2MB. Free memory was 84.4MB in the beginning and 73.6MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
[2021-11-13 17:44:58,920 INFO L158 Benchmark]: TraceAbstraction took 3710.44ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 73.2MB in the beginning and 82.3MB in the end (delta: -9.1MB). Peak memory consumption was 17.1MB. Max. memory is 16.1GB.
[2021-11-13 17:44:58,921 INFO L158 Benchmark]: Witness Printer took 4.18ms. Allocated memory is still 136.3MB. Free memory is still 82.3MB. There was no memory consumed. Max. memory is 16.1GB.
[2021-11-13 17:44:58,923 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.35ms. Allocated memory is still 113.2MB. Free memory is still 92.3MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 380.26ms. Allocated memory is still 113.2MB. Free memory was 76.1MB in the beginning and 87.5MB in the end (delta: -11.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 77.91ms. Allocated memory is still 113.2MB. Free memory was 87.5MB in the beginning and 86.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB.
* Boogie Preprocessor took 60.21ms. Allocated memory is still 113.2MB. Free memory was 85.8MB in the beginning and 84.8MB in the end (delta: 1.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
* RCFGBuilder took 525.81ms. Allocated memory is still 113.2MB. Free memory was 84.4MB in the beginning and 73.6MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
* TraceAbstraction took 3710.44ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 73.2MB in the beginning and 82.3MB in the end (delta: -9.1MB). Peak memory consumption was 17.1MB. Max. memory is 16.1GB.
* Witness Printer took 4.18ms. Allocated memory is still 136.3MB. Free memory is still 82.3MB. 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: 15]: Unable to prove that call to reach_error is unreachable
Unable to prove that call to reach_error is unreachable
Reason: unable to decide satisfiability of path constraint.
Possible FailurePath:
[L19] int N;
[L23] N = __VERIFIER_nondet_int()
[L24] COND FALSE !(N <= 0)
[L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int))
[L13] COND FALSE !(!cond)
[L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int))
[L27] int i;
[L28] long long *a = malloc(sizeof(long long)*N);
[L29] long long *b = malloc(sizeof(long long)*N);
[L31] a[0] = 1
[L32] b[0] = 1
[L33] i=1
[L33] COND TRUE i<N
[L35] EXPR a[i-1]
[L35] a[i] = a[i-1] + 10
[L33] i++
[L33] COND FALSE !(i<N)
[L38] i=1
[L38] COND TRUE i<N
[L40] EXPR b[i-1]
[L40] EXPR a[i-1]
[L40] b[i] = b[i-1] + a[i-1]
[L38] i++
[L38] COND FALSE !(i<N)
[L43] i=0
[L43] COND TRUE i<N
[L45] EXPR b[i]
[L45] CALL __VERIFIER_assert(b[i] == 5*i*i + 5*i + 1)
[L15] COND TRUE !(cond)
[L15] reach_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 1 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.6s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 79 SdHoareTripleChecker+Valid, 242.98ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 79 mSDsluCounter, 187 SdHoareTripleChecker+Invalid, 194.99ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 107 mSDsCounter, 32 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 171 IncrementalHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 32 mSolverCounterUnsat, 80 mSDtfsCounter, 171 mSolverCounterSat, 16.41ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 78 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=4, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 47 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 203 SizeOfPredicates, 18 NumberOfNonLiveVariables, 397 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 3/5 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
[2021-11-13 17:44:58,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/eqn5f.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y --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 d9916de8363461179d8fb51bbbca62f9fac89d50ba7961a3d354541c45153780
--- Real Ultimate output ---
This is Ultimate 0.2.1-dev-63182f1
[2021-11-13 17:45:02,038 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-11-13 17:45:02,042 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-11-13 17:45:02,105 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-11-13 17:45:02,106 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-11-13 17:45:02,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-11-13 17:45:02,115 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-11-13 17:45:02,123 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-11-13 17:45:02,127 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-11-13 17:45:02,137 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-11-13 17:45:02,139 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-11-13 17:45:02,141 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-11-13 17:45:02,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-11-13 17:45:02,146 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-11-13 17:45:02,149 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-11-13 17:45:02,156 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-11-13 17:45:02,158 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-11-13 17:45:02,159 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-11-13 17:45:02,161 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-11-13 17:45:02,170 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-11-13 17:45:02,173 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-11-13 17:45:02,175 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-11-13 17:45:02,179 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-11-13 17:45:02,182 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-11-13 17:45:02,193 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-11-13 17:45:02,196 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-11-13 17:45:02,197 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-11-13 17:45:02,199 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-11-13 17:45:02,200 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-11-13 17:45:02,202 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-11-13 17:45:02,202 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-11-13 17:45:02,203 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-11-13 17:45:02,206 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-11-13 17:45:02,207 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2021-11-13 17:45:02,209 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-11-13 17:45:02,209 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2021-11-13 17:45:02,211 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-11-13 17:45:02,211 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-11-13 17:45:02,211 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2021-11-13 17:45:02,214 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2021-11-13 17:45:02,215 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-11-13 17:45:02,221 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2021-11-13 17:45:02,274 INFO L113 SettingsManager]: Loading preferences was successful
[2021-11-13 17:45:02,274 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-11-13 17:45:02,275 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-11-13 17:45:02,276 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-11-13 17:45:02,277 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-11-13 17:45:02,277 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-11-13 17:45:02,279 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-11-13 17:45:02,279 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-11-13 17:45:02,280 INFO L138 SettingsManager]: * Use SBE=true
[2021-11-13 17:45:02,280 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-11-13 17:45:02,281 INFO L138 SettingsManager]: * sizeof long=4
[2021-11-13 17:45:02,282 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-11-13 17:45:02,282 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-11-13 17:45:02,282 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-11-13 17:45:02,283 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-11-13 17:45:02,283 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-11-13 17:45:02,283 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true
[2021-11-13 17:45:02,284 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution
[2021-11-13 17:45:02,284 INFO L138 SettingsManager]: * sizeof long double=12
[2021-11-13 17:45:02,284 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-11-13 17:45:02,284 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-11-13 17:45:02,285 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-11-13 17:45:02,285 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-11-13 17:45:02,285 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-11-13 17:45:02,286 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-11-13 17:45:02,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-13 17:45:02,287 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-11-13 17:45:02,287 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-11-13 17:45:02,287 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-11-13 17:45:02,287 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF
[2021-11-13 17:45:02,288 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt
[2021-11-13 17:45:02,288 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF
[2021-11-13 17:45:02,289 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2021-11-13 17:45:02,289 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-11-13 17:45:02,289 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2021-11-13 17:45:02,289 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2021-11-13 17:45:02,290 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_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d9916de8363461179d8fb51bbbca62f9fac89d50ba7961a3d354541c45153780
[2021-11-13 17:45:02,764 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-11-13 17:45:02,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-11-13 17:45:02,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-11-13 17:45:02,812 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-11-13 17:45:02,813 INFO L275 PluginConnector]: CDTParser initialized
[2021-11-13 17:45:02,815 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/array-fpi/eqn5f.c
[2021-11-13 17:45:02,898 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/data/26423e8a4/31da96d459244e218249cabfc93127e9/FLAG8b17880b0
[2021-11-13 17:45:03,467 INFO L306 CDTParser]: Found 1 translation units.
[2021-11-13 17:45:03,468 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/sv-benchmarks/c/array-fpi/eqn5f.c
[2021-11-13 17:45:03,479 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/data/26423e8a4/31da96d459244e218249cabfc93127e9/FLAG8b17880b0
[2021-11-13 17:45:03,798 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/data/26423e8a4/31da96d459244e218249cabfc93127e9
[2021-11-13 17:45:03,801 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-11-13 17:45:03,803 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2021-11-13 17:45:03,805 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-11-13 17:45:03,805 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-11-13 17:45:03,810 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-11-13 17:45:03,811 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:45:03" (1/1) ...
[2021-11-13 17:45:03,812 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36355308 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:03, skipping insertion in model container
[2021-11-13 17:45:03,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:45:03" (1/1) ...
[2021-11-13 17:45:03,829 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-11-13 17:45:03,851 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-11-13 17:45:04,104 WARN L228 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_a15fcde3-8435-468f-9ab3-f28440209ebb/sv-benchmarks/c/array-fpi/eqn5f.c[588,601]
[2021-11-13 17:45:04,148 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-11-13 17:45:04,168 INFO L203 MainTranslator]: Completed pre-run
[2021-11-13 17:45:04,187 WARN L228 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_a15fcde3-8435-468f-9ab3-f28440209ebb/sv-benchmarks/c/array-fpi/eqn5f.c[588,601]
[2021-11-13 17:45:04,221 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-11-13 17:45:04,251 INFO L208 MainTranslator]: Completed translation
[2021-11-13 17:45:04,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:04 WrapperNode
[2021-11-13 17:45:04,252 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-11-13 17:45:04,253 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-11-13 17:45:04,254 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-11-13 17:45:04,254 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2021-11-13 17:45:04,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:04" (1/1) ...
[2021-11-13 17:45:04,302 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:04" (1/1) ...
[2021-11-13 17:45:04,340 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-11-13 17:45:04,341 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-11-13 17:45:04,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-11-13 17:45:04,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-11-13 17:45:04,352 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:04" (1/1) ...
[2021-11-13 17:45:04,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:04" (1/1) ...
[2021-11-13 17:45:04,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:04" (1/1) ...
[2021-11-13 17:45:04,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:04" (1/1) ...
[2021-11-13 17:45:04,388 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:04" (1/1) ...
[2021-11-13 17:45:04,396 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:04" (1/1) ...
[2021-11-13 17:45:04,399 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:04" (1/1) ...
[2021-11-13 17:45:04,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-11-13 17:45:04,410 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-11-13 17:45:04,411 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-11-13 17:45:04,411 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-11-13 17:45:04,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:04" (1/1) ...
[2021-11-13 17:45:04,426 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-13 17:45:04,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 17:45:04,467 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-11-13 17:45:04,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-11-13 17:45:04,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2021-11-13 17:45:04,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-11-13 17:45:04,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8
[2021-11-13 17:45:04,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2021-11-13 17:45:04,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-11-13 17:45:04,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-11-13 17:45:04,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8
[2021-11-13 17:45:04,921 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-11-13 17:45:04,922 INFO L299 CfgBuilder]: Removed 3 assume(true) statements.
[2021-11-13 17:45:04,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:45:04 BoogieIcfgContainer
[2021-11-13 17:45:04,924 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-11-13 17:45:04,926 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-11-13 17:45:04,927 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-11-13 17:45:04,930 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-11-13 17:45:04,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:45:03" (1/3) ...
[2021-11-13 17:45:04,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bc0f129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:45:04, skipping insertion in model container
[2021-11-13 17:45:04,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:04" (2/3) ...
[2021-11-13 17:45:04,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bc0f129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:45:04, skipping insertion in model container
[2021-11-13 17:45:04,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:45:04" (3/3) ...
[2021-11-13 17:45:04,934 INFO L111 eAbstractionObserver]: Analyzing ICFG eqn5f.c
[2021-11-13 17:45:04,941 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-11-13 17:45:04,941 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-11-13 17:45:05,000 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-11-13 17:45:05,019 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR
[2021-11-13 17:45:05,020 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-11-13 17:45:05,036 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:45:05,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2021-11-13 17:45:05,043 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:45:05,044 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:45:05,044 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:45:05,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:45:05,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1828546148, now seen corresponding path program 1 times
[2021-11-13 17:45:05,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-13 17:45:05,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1384769431]
[2021-11-13 17:45:05,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:45:05,068 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-13 17:45:05,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/mathsat
[2021-11-13 17:45:05,072 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-13 17:45:05,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process
[2021-11-13 17:45:05,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:45:05,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 1 conjunts are in the unsatisfiable core
[2021-11-13 17:45:05,192 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 17:45:05,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:45:05,268 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 17:45:05,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:45:05,321 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-13 17:45:05,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1384769431]
[2021-11-13 17:45:05,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1384769431] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-13 17:45:05,323 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-13 17:45:05,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2
[2021-11-13 17:45:05,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272975641]
[2021-11-13 17:45:05,326 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-13 17:45:05,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2021-11-13 17:45:05,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-13 17:45:05,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2021-11-13 17:45:05,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2021-11-13 17:45:05,367 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 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 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:45:05,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:45:05,385 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions.
[2021-11-13 17:45:05,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2021-11-13 17:45:05,388 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12
[2021-11-13 17:45:05,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:45:05,398 INFO L225 Difference]: With dead ends: 38
[2021-11-13 17:45:05,418 INFO L226 Difference]: Without dead ends: 17
[2021-11-13 17:45:05,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2021-11-13 17:45:05,427 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.73ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:45:05,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.73ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time]
[2021-11-13 17:45:05,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states.
[2021-11-13 17:45:05,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17.
[2021-11-13 17:45:05,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:45:05,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions.
[2021-11-13 17:45:05,467 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12
[2021-11-13 17:45:05,468 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:45:05,468 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions.
[2021-11-13 17:45:05,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:45:05,469 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions.
[2021-11-13 17:45:05,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2021-11-13 17:45:05,470 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:45:05,470 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:45:05,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0
[2021-11-13 17:45:05,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3
[2021-11-13 17:45:05,685 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:45:05,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:45:05,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1148487778, now seen corresponding path program 1 times
[2021-11-13 17:45:05,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-13 17:45:05,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2117797447]
[2021-11-13 17:45:05,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:45:05,688 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-13 17:45:05,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/mathsat
[2021-11-13 17:45:05,700 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-13 17:45:05,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process
[2021-11-13 17:45:05,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:45:05,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-11-13 17:45:05,812 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 17:45:05,949 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-11-13 17:45:05,968 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-11-13 17:45:06,183 INFO L354 Elim1Store]: treesize reduction 156, result has 19.2 percent of original size
[2021-11-13 17:45:06,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 55
[2021-11-13 17:45:06,665 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-11-13 17:45:06,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 29
[2021-11-13 17:45:06,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:45:06,729 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 17:45:07,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:45:07,286 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-13 17:45:07,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2117797447]
[2021-11-13 17:45:07,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2117797447] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-13 17:45:07,291 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-13 17:45:07,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8
[2021-11-13 17:45:07,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347311651]
[2021-11-13 17:45:07,292 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-13 17:45:07,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2021-11-13 17:45:07,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-13 17:45:07,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2021-11-13 17:45:07,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56
[2021-11-13 17:45:07,300 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:45:08,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:45:08,289 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions.
[2021-11-13 17:45:08,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2021-11-13 17:45:08,292 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 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 12
[2021-11-13 17:45:08,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:45:08,293 INFO L225 Difference]: With dead ends: 35
[2021-11-13 17:45:08,293 INFO L226 Difference]: Without dead ends: 33
[2021-11-13 17:45:08,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110
[2021-11-13 17:45:08,295 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 19 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 713.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.50ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 778.63ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:45:08,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 82 Invalid, 51 Unknown, 0 Unchecked, 3.50ms Time], IncrementalHoareTripleChecker [5 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 778.63ms Time]
[2021-11-13 17:45:08,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2021-11-13 17:45:08,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 23.
[2021-11-13 17:45:08,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:45:08,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions.
[2021-11-13 17:45:08,306 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12
[2021-11-13 17:45:08,306 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:45:08,306 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions.
[2021-11-13 17:45:08,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:45:08,307 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions.
[2021-11-13 17:45:08,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2021-11-13 17:45:08,308 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:45:08,308 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:45:08,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0
[2021-11-13 17:45:08,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3
[2021-11-13 17:45:08,534 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:45:08,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:45:08,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1755224028, now seen corresponding path program 1 times
[2021-11-13 17:45:08,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-13 17:45:08,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1272018542]
[2021-11-13 17:45:08,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:45:08,537 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-13 17:45:08,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/mathsat
[2021-11-13 17:45:08,538 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-13 17:45:08,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process
[2021-11-13 17:45:08,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:45:08,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 8 conjunts are in the unsatisfiable core
[2021-11-13 17:45:08,629 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 17:45:08,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:45:08,887 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 17:45:08,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:45:08,995 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-13 17:45:08,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1272018542]
[2021-11-13 17:45:08,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1272018542] provided 2 perfect and 0 imperfect interpolant sequences
[2021-11-13 17:45:08,996 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2021-11-13 17:45:08,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 5] imperfect sequences [] total 10
[2021-11-13 17:45:08,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779377326]
[2021-11-13 17:45:08,996 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2021-11-13 17:45:08,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2021-11-13 17:45:08,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-13 17:45:08,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2021-11-13 17:45:08,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90
[2021-11-13 17:45:08,998 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:45:09,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:45:09,591 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions.
[2021-11-13 17:45:09,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2021-11-13 17:45:09,594 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 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 14
[2021-11-13 17:45:09,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:45:09,594 INFO L225 Difference]: With dead ends: 43
[2021-11-13 17:45:09,595 INFO L226 Difference]: Without dead ends: 34
[2021-11-13 17:45:09,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240
[2021-11-13 17:45:09,596 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 71 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 284.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.28ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 336.37ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:45:09,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 34 Invalid, 96 Unknown, 0 Unchecked, 3.28ms Time], IncrementalHoareTripleChecker [22 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 336.37ms Time]
[2021-11-13 17:45:09,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states.
[2021-11-13 17:45:09,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 23.
[2021-11-13 17:45:09,602 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)
[2021-11-13 17:45:09,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions.
[2021-11-13 17:45:09,603 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 14
[2021-11-13 17:45:09,603 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:45:09,603 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions.
[2021-11-13 17:45:09,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:45:09,608 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions.
[2021-11-13 17:45:09,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2021-11-13 17:45:09,609 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:45:09,610 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:45:09,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0
[2021-11-13 17:45:09,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3
[2021-11-13 17:45:09,829 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:45:09,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:45:09,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1842440164, now seen corresponding path program 1 times
[2021-11-13 17:45:09,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-13 17:45:09,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1243552934]
[2021-11-13 17:45:09,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:45:09,830 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-13 17:45:09,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/mathsat
[2021-11-13 17:45:09,834 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-13 17:45:09,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process
[2021-11-13 17:45:09,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:45:09,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 10 conjunts are in the unsatisfiable core
[2021-11-13 17:45:09,888 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 17:45:10,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:45:10,142 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 17:45:10,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:45:10,321 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-13 17:45:10,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1243552934]
[2021-11-13 17:45:10,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1243552934] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 17:45:10,321 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-13 17:45:10,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14
[2021-11-13 17:45:10,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802505970]
[2021-11-13 17:45:10,322 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-13 17:45:10,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2021-11-13 17:45:10,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-13 17:45:10,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2021-11-13 17:45:10,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182
[2021-11-13 17:45:10,323 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 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)
[2021-11-13 17:45:11,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:45:11,288 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions.
[2021-11-13 17:45:11,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2021-11-13 17:45:11,289 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 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) Word has length 14
[2021-11-13 17:45:11,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:45:11,291 INFO L225 Difference]: With dead ends: 58
[2021-11-13 17:45:11,291 INFO L226 Difference]: Without dead ends: 49
[2021-11-13 17:45:11,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=200, Invalid=450, Unknown=0, NotChecked=0, Total=650
[2021-11-13 17:45:11,293 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 112 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 389.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.67ms SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 460.63ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:45:11,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 41 Invalid, 155 Unknown, 0 Unchecked, 3.67ms Time], IncrementalHoareTripleChecker [51 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 460.63ms Time]
[2021-11-13 17:45:11,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2021-11-13 17:45:11,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30.
[2021-11-13 17:45:11,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:45:11,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions.
[2021-11-13 17:45:11,305 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 14
[2021-11-13 17:45:11,305 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:45:11,305 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions.
[2021-11-13 17:45:11,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 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)
[2021-11-13 17:45:11,306 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions.
[2021-11-13 17:45:11,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2021-11-13 17:45:11,307 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:45:11,307 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:45:11,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0
[2021-11-13 17:45:11,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3
[2021-11-13 17:45:11,525 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:45:11,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:45:11,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1667884396, now seen corresponding path program 1 times
[2021-11-13 17:45:11,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-13 17:45:11,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [17850166]
[2021-11-13 17:45:11,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:45:11,527 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-13 17:45:11,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/mathsat
[2021-11-13 17:45:11,528 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-13 17:45:11,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process
[2021-11-13 17:45:11,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:45:11,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core
[2021-11-13 17:45:11,598 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 17:45:11,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:45:11,892 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 17:45:12,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:45:12,058 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-13 17:45:12,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [17850166]
[2021-11-13 17:45:12,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [17850166] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 17:45:12,058 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-13 17:45:12,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 12
[2021-11-13 17:45:12,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680104748]
[2021-11-13 17:45:12,059 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-13 17:45:12,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2021-11-13 17:45:12,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-13 17:45:12,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2021-11-13 17:45:12,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132
[2021-11-13 17:45:12,061 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:45:12,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:45:12,657 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions.
[2021-11-13 17:45:12,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2021-11-13 17:45:12,660 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16
[2021-11-13 17:45:12,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:45:12,661 INFO L225 Difference]: With dead ends: 41
[2021-11-13 17:45:12,661 INFO L226 Difference]: Without dead ends: 27
[2021-11-13 17:45:12,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306
[2021-11-13 17:45:12,663 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 52 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 287.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.82ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 332.82ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:45:12,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 27 Invalid, 110 Unknown, 0 Unchecked, 1.82ms Time], IncrementalHoareTripleChecker [27 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 332.82ms Time]
[2021-11-13 17:45:12,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2021-11-13 17:45:12,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25.
[2021-11-13 17:45:12,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:45:12,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions.
[2021-11-13 17:45:12,675 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 16
[2021-11-13 17:45:12,675 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:45:12,676 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions.
[2021-11-13 17:45:12,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:45:12,676 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions.
[2021-11-13 17:45:12,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2021-11-13 17:45:12,677 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:45:12,677 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:45:12,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0
[2021-11-13 17:45:12,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3
[2021-11-13 17:45:12,894 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:45:12,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:45:12,894 INFO L85 PathProgramCache]: Analyzing trace with hash 586911962, now seen corresponding path program 1 times
[2021-11-13 17:45:12,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-13 17:45:12,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [976401960]
[2021-11-13 17:45:12,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:45:12,895 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-13 17:45:12,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/mathsat
[2021-11-13 17:45:12,898 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-13 17:45:12,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process
[2021-11-13 17:45:13,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:45:13,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 12 conjunts are in the unsatisfiable core
[2021-11-13 17:45:13,031 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 17:45:13,059 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-11-13 17:45:13,060 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-11-13 17:45:13,061 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-11-13 17:45:13,084 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size
[2021-11-13 17:45:13,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 35
[2021-11-13 17:45:13,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8
[2021-11-13 17:45:13,204 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-11-13 17:45:13,206 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-11-13 17:45:13,441 INFO L354 Elim1Store]: treesize reduction 457, result has 13.1 percent of original size
[2021-11-13 17:45:13,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 104 treesize of output 116
[2021-11-13 17:45:14,242 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-13 17:45:14,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [976401960]
[2021-11-13 17:45:14,243 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [|ULTIMATE.start_main_~i~0#1|]
[2021-11-13 17:45:14,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1105719922]
[2021-11-13 17:45:14,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:45:14,244 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2021-11-13 17:45:14,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/cvc4
[2021-11-13 17:45:14,252 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2021-11-13 17:45:14,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process
[2021-11-13 17:45:14,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:45:14,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 13 conjunts are in the unsatisfiable core
[2021-11-13 17:45:14,505 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 17:45:14,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 10
[2021-11-13 17:45:14,561 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-11-13 17:45:14,564 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-11-13 17:45:14,565 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-11-13 17:45:14,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 37
[2021-11-13 17:45:14,670 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-11-13 17:45:14,671 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-11-13 17:45:14,673 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-11-13 17:45:14,674 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-11-13 17:45:14,676 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-11-13 17:45:14,677 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-11-13 17:45:14,679 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-11-13 17:45:14,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77
[2021-11-13 17:45:15,100 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-11-13 17:45:15,101 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-11-13 17:45:15,102 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-11-13 17:45:15,103 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-11-13 17:45:15,105 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-11-13 17:45:15,106 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-11-13 17:45:15,107 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-11-13 17:45:15,108 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-11-13 17:45:15,110 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-11-13 17:45:15,110 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-11-13 17:45:15,112 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-11-13 17:45:15,113 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-11-13 17:45:15,142 INFO L354 Elim1Store]: treesize reduction 62, result has 19.5 percent of original size
[2021-11-13 17:45:15,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 17 case distinctions, treesize of input 141 treesize of output 115
[2021-11-13 17:45:15,615 INFO L354 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size
[2021-11-13 17:45:15,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 153 treesize of output 85
[2021-11-13 17:45:15,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:45:15,668 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 17:45:17,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:45:17,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1105719922] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 17:45:17,231 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-13 17:45:17,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13
[2021-11-13 17:45:17,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178932347]
[2021-11-13 17:45:17,231 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-13 17:45:17,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2021-11-13 17:45:17,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-13 17:45:17,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2021-11-13 17:45:17,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210
[2021-11-13 17:45:17,234 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:45:20,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:45:20,971 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions.
[2021-11-13 17:45:20,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2021-11-13 17:45:20,972 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16
[2021-11-13 17:45:20,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:45:20,973 INFO L225 Difference]: With dead ends: 43
[2021-11-13 17:45:20,973 INFO L226 Difference]: Without dead ends: 41
[2021-11-13 17:45:20,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380
[2021-11-13 17:45:20,975 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 17 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1615.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.65ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 1681.61ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:45:20,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 53 Invalid, 92 Unknown, 0 Unchecked, 1.65ms Time], IncrementalHoareTripleChecker [12 Valid, 64 Invalid, 0 Unknown, 16 Unchecked, 1681.61ms Time]
[2021-11-13 17:45:20,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states.
[2021-11-13 17:45:20,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34.
[2021-11-13 17:45:20,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 33 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:45:20,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions.
[2021-11-13 17:45:20,989 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 16
[2021-11-13 17:45:20,990 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:45:20,990 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions.
[2021-11-13 17:45:20,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:45:20,991 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions.
[2021-11-13 17:45:20,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2021-11-13 17:45:20,992 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:45:20,992 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:45:21,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0
[2021-11-13 17:45:21,198 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0
[2021-11-13 17:45:21,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/cvc4 --incremental --print-success --lang smt
[2021-11-13 17:45:21,396 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 17:45:21,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:45:21,397 INFO L85 PathProgramCache]: Analyzing trace with hash 798963152, now seen corresponding path program 1 times
[2021-11-13 17:45:21,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-13 17:45:21,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [672587582]
[2021-11-13 17:45:21,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:45:21,398 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-13 17:45:21,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/mathsat
[2021-11-13 17:45:21,399 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-13 17:45:21,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process
[2021-11-13 17:45:21,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-11-13 17:45:21,590 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-11-13 17:45:21,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-11-13 17:45:21,769 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace
[2021-11-13 17:45:21,769 INFO L628 BasicCegarLoop]: Counterexample is feasible
[2021-11-13 17:45:21,770 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2021-11-13 17:45:21,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0
[2021-11-13 17:45:21,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3
[2021-11-13 17:45:21,975 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:45:21,977 INFO L179 ceAbstractionStarter]: Computing trace abstraction results
[2021-11-13 17:45:22,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 05:45:22 BoogieIcfgContainer
[2021-11-13 17:45:22,026 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-11-13 17:45:22,026 INFO L113 PluginConnector]: ------------------------Witness Printer----------------------------
[2021-11-13 17:45:22,026 INFO L271 PluginConnector]: Initializing Witness Printer...
[2021-11-13 17:45:22,027 INFO L275 PluginConnector]: Witness Printer initialized
[2021-11-13 17:45:22,027 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:45:04" (3/4) ...
[2021-11-13 17:45:22,029 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample
[2021-11-13 17:45:22,110 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/witness.graphml
[2021-11-13 17:45:22,110 INFO L132 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2021-11-13 17:45:22,111 INFO L158 Benchmark]: Toolchain (without parser) took 18308.50ms. Allocated memory was 83.9MB in the beginning and 123.7MB in the end (delta: 39.8MB). Free memory was 49.3MB in the beginning and 76.2MB in the end (delta: -26.9MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB.
[2021-11-13 17:45:22,112 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 83.9MB. Free memory was 65.7MB in the beginning and 65.7MB in the end (delta: 75.1kB). There was no memory consumed. Max. memory is 16.1GB.
[2021-11-13 17:45:22,113 INFO L158 Benchmark]: CACSL2BoogieTranslator took 447.67ms. Allocated memory is still 83.9MB. Free memory was 49.1MB in the beginning and 68.4MB in the end (delta: -19.3MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB.
[2021-11-13 17:45:22,113 INFO L158 Benchmark]: Boogie Procedure Inliner took 86.94ms. Allocated memory is still 83.9MB. Free memory was 68.4MB in the beginning and 66.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2021-11-13 17:45:22,113 INFO L158 Benchmark]: Boogie Preprocessor took 67.92ms. Allocated memory is still 83.9MB. Free memory was 66.7MB in the beginning and 65.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB.
[2021-11-13 17:45:22,114 INFO L158 Benchmark]: RCFGBuilder took 514.24ms. Allocated memory is still 83.9MB. Free memory was 65.2MB in the beginning and 53.4MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
[2021-11-13 17:45:22,114 INFO L158 Benchmark]: TraceAbstraction took 17099.39ms. Allocated memory was 83.9MB in the beginning and 123.7MB in the end (delta: 39.8MB). Free memory was 52.9MB in the beginning and 79.3MB in the end (delta: -26.4MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB.
[2021-11-13 17:45:22,115 INFO L158 Benchmark]: Witness Printer took 84.39ms. Allocated memory is still 123.7MB. Free memory was 79.3MB in the beginning and 76.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
[2021-11-13 17:45:22,117 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.34ms. Allocated memory is still 83.9MB. Free memory was 65.7MB in the beginning and 65.7MB in the end (delta: 75.1kB). There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 447.67ms. Allocated memory is still 83.9MB. Free memory was 49.1MB in the beginning and 68.4MB in the end (delta: -19.3MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 86.94ms. Allocated memory is still 83.9MB. Free memory was 68.4MB in the beginning and 66.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 67.92ms. Allocated memory is still 83.9MB. Free memory was 66.7MB in the beginning and 65.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB.
* RCFGBuilder took 514.24ms. Allocated memory is still 83.9MB. Free memory was 65.2MB in the beginning and 53.4MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
* TraceAbstraction took 17099.39ms. Allocated memory was 83.9MB in the beginning and 123.7MB in the end (delta: 39.8MB). Free memory was 52.9MB in the beginning and 79.3MB in the end (delta: -26.4MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB.
* Witness Printer took 84.39ms. Allocated memory is still 123.7MB. Free memory was 79.3MB in the beginning and 76.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. 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
- CounterExampleResult [Line: 15]: a call to reach_error is reachable
a call to reach_error is reachable
We found a FailurePath:
[L19] int N;
VAL [N=0]
[L23] N = __VERIFIER_nondet_int()
[L24] COND FALSE !(N <= 0)
[L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int))
[L13] COND FALSE !(!cond)
VAL [\old(cond)=1, cond=1, N=2]
[L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int))
[L27] int i;
[L28] long long *a = malloc(sizeof(long long)*N);
[L29] long long *b = malloc(sizeof(long long)*N);
[L31] a[0] = 1
[L32] b[0] = 1
[L33] i=1
VAL [a={1:0}, b={3:0}, i=1, N=2]
[L33] COND TRUE i<N
[L35] EXPR a[i-1]
[L35] a[i] = a[i-1] + 10
[L33] i++
VAL [a={1:0}, b={3:0}, i=2, N=2]
[L33] COND FALSE !(i<N)
VAL [a={1:0}, b={3:0}, i=2, N=2]
[L38] i=1
VAL [a={1:0}, b={3:0}, i=1, N=2]
[L38] COND TRUE i<N
[L40] EXPR b[i-1]
[L40] EXPR a[i-1]
[L40] b[i] = b[i-1] + a[i-1]
[L38] i++
VAL [a={1:0}, b={3:0}, i=2, N=2]
[L38] COND FALSE !(i<N)
VAL [a={1:0}, b={3:0}, i=2, N=2]
[L43] i=0
VAL [a={1:0}, b={3:0}, i=0, N=2]
[L43] COND TRUE i<N
[L45] EXPR b[i]
[L45] CALL __VERIFIER_assert(b[i] == 5*i*i + 5*i + 1)
[L15] COND FALSE !(!(cond))
VAL [\old(cond)=1, cond=1, N=2]
[L45] RET __VERIFIER_assert(b[i] == 5*i*i + 5*i + 1)
[L43] i++
VAL [a={1:0}, b={3:0}, i=1, N=2]
[L43] COND TRUE i<N
[L45] EXPR b[i]
[L45] CALL __VERIFIER_assert(b[i] == 5*i*i + 5*i + 1)
[L15] COND TRUE !(cond)
VAL [\old(cond)=0, cond=0, N=2]
[L15] reach_error()
VAL [\old(cond)=0, cond=0, N=2]
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 1 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 17.0s, OverallIterations: 7, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 7.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 271 SdHoareTripleChecker+Valid, 3590.06ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 271 mSDsluCounter, 261 SdHoareTripleChecker+Invalid, 3290.37ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 16 IncrementalHoareTripleChecker+Unchecked, 174 mSDsCounter, 117 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 371 IncrementalHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 117 mSolverCounterUnsat, 87 mSDtfsCounter, 371 mSolverCounterSat, 14.65ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 199 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 6.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=6, InterpolantAutomatonStates: 59, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 49 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 6.9s InterpolantComputationTime, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 156 ConstructedInterpolants, 4 QuantifiedInterpolants, 2073 SizeOfPredicates, 36 NumberOfNonLiveVariables, 368 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 4/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
[2021-11-13 17:45:22,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15fcde3-8435-468f-9ab3-f28440209ebb/bin/uautomizer-YU5uOKAj3y/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
Writing output log to file Ultimate.log
Writing human readable error path to file UltimateCounterExample.errorpath
Result:
FALSE