./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test27-2.c --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version 7b2dab56
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26e762ca-cfcb-4d02-a01c-11f99dcc0c70/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26e762ca-cfcb-4d02-a01c-11f99dcc0c70/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26e762ca-cfcb-4d02-a01c-11f99dcc0c70/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26e762ca-cfcb-4d02-a01c-11f99dcc0c70/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test27-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26e762ca-cfcb-4d02-a01c-11f99dcc0c70/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26e762ca-cfcb-4d02-a01c-11f99dcc0c70/bin/uautomizer-Z5i5R5N3CC --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 2292364e3df3925555991c57490c078c89b959e0
......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Execution finished normally
Writing output log to file Ultimate.log
Writing human readable error path to file UltimateCounterExample.errorpath
Result:
FALSE
--- Real Ultimate output ---
This is Ultimate 0.2.0-7b2dab5
[2021-10-11 00:27:35,767 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-10-11 00:27:35,769 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-10-11 00:27:35,817 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-10-11 00:27:35,818 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-10-11 00:27:35,825 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-10-11 00:27:35,829 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-10-11 00:27:35,834 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-10-11 00:27:35,837 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-10-11 00:27:35,845 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-10-11 00:27:35,846 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-10-11 00:27:35,848 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-10-11 00:27:35,848 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-10-11 00:27:35,852 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-10-11 00:27:35,853 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-10-11 00:27:35,856 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-10-11 00:27:35,858 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-10-11 00:27:35,859 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-10-11 00:27:35,865 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-10-11 00:27:35,875 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-10-11 00:27:35,877 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-10-11 00:27:35,879 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-10-11 00:27:35,883 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-10-11 00:27:35,884 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-10-11 00:27:35,887 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-10-11 00:27:35,888 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-10-11 00:27:35,888 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-10-11 00:27:35,891 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-10-11 00:27:35,891 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-10-11 00:27:35,893 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-10-11 00:27:35,894 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-10-11 00:27:35,895 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-10-11 00:27:35,897 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-10-11 00:27:35,898 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2021-10-11 00:27:35,899 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-10-11 00:27:35,899 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2021-10-11 00:27:35,900 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-10-11 00:27:35,901 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-10-11 00:27:35,901 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2021-10-11 00:27:35,902 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2021-10-11 00:27:35,903 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-10-11 00:27:35,905 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26e762ca-cfcb-4d02-a01c-11f99dcc0c70/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-10-11 00:27:35,945 INFO L113 SettingsManager]: Loading preferences was successful
[2021-10-11 00:27:35,946 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-10-11 00:27:35,948 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-10-11 00:27:35,948 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-10-11 00:27:35,948 INFO L138 SettingsManager]: * Use SBE=true
[2021-10-11 00:27:35,948 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-10-11 00:27:35,949 INFO L138 SettingsManager]: * sizeof long=4
[2021-10-11 00:27:35,949 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-10-11 00:27:35,949 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-10-11 00:27:35,956 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-10-11 00:27:35,957 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-10-11 00:27:35,957 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-10-11 00:27:35,957 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-10-11 00:27:35,957 INFO L138 SettingsManager]: * sizeof long double=12
[2021-10-11 00:27:35,958 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-10-11 00:27:35,958 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-10-11 00:27:35,958 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-10-11 00:27:35,958 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-10-11 00:27:35,959 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-10-11 00:27:35,959 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-10-11 00:27:35,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-10-11 00:27:35,959 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-10-11 00:27:35,960 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-10-11 00:27:35,960 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-10-11 00:27:35,960 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2021-10-11 00:27:35,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-10-11 00:27:35,960 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-10-11 00:27:35,961 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2021-10-11 00:27:35,961 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_26e762ca-cfcb-4d02-a01c-11f99dcc0c70/bin/uautomizer-Z5i5R5N3CC/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26e762ca-cfcb-4d02-a01c-11f99dcc0c70/bin/uautomizer-Z5i5R5N3CC
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2292364e3df3925555991c57490c078c89b959e0
[2021-10-11 00:27:36,279 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-10-11 00:27:36,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-10-11 00:27:36,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-10-11 00:27:36,325 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-10-11 00:27:36,326 INFO L275 PluginConnector]: CDTParser initialized
[2021-10-11 00:27:36,327 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26e762ca-cfcb-4d02-a01c-11f99dcc0c70/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/ldv-regression/test27-2.c
[2021-10-11 00:27:36,408 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26e762ca-cfcb-4d02-a01c-11f99dcc0c70/bin/uautomizer-Z5i5R5N3CC/data/d7f37bc03/c41273dafdfa4fc8bd82a46254bd7f4d/FLAGef9f1cd77
[2021-10-11 00:27:36,919 INFO L306 CDTParser]: Found 1 translation units.
[2021-10-11 00:27:36,923 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26e762ca-cfcb-4d02-a01c-11f99dcc0c70/sv-benchmarks/c/ldv-regression/test27-2.c
[2021-10-11 00:27:36,936 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26e762ca-cfcb-4d02-a01c-11f99dcc0c70/bin/uautomizer-Z5i5R5N3CC/data/d7f37bc03/c41273dafdfa4fc8bd82a46254bd7f4d/FLAGef9f1cd77
[2021-10-11 00:27:37,265 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26e762ca-cfcb-4d02-a01c-11f99dcc0c70/bin/uautomizer-Z5i5R5N3CC/data/d7f37bc03/c41273dafdfa4fc8bd82a46254bd7f4d
[2021-10-11 00:27:37,268 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-10-11 00:27:37,270 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2021-10-11 00:27:37,271 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-10-11 00:27:37,271 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-10-11 00:27:37,275 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-10-11 00:27:37,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:27:37" (1/1) ...
[2021-10-11 00:27:37,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d3c69db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:37, skipping insertion in model container
[2021-10-11 00:27:37,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:27:37" (1/1) ...
[2021-10-11 00:27:37,286 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-10-11 00:27:37,301 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-10-11 00:27:37,514 WARN L226 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_26e762ca-cfcb-4d02-a01c-11f99dcc0c70/sv-benchmarks/c/ldv-regression/test27-2.c[1224,1237]
[2021-10-11 00:27:37,517 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-10-11 00:27:37,525 INFO L203 MainTranslator]: Completed pre-run
[2021-10-11 00:27:37,546 WARN L226 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_26e762ca-cfcb-4d02-a01c-11f99dcc0c70/sv-benchmarks/c/ldv-regression/test27-2.c[1224,1237]
[2021-10-11 00:27:37,547 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-10-11 00:27:37,562 INFO L208 MainTranslator]: Completed translation
[2021-10-11 00:27:37,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:37 WrapperNode
[2021-10-11 00:27:37,563 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-10-11 00:27:37,564 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-10-11 00:27:37,564 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-10-11 00:27:37,564 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2021-10-11 00:27:37,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:37" (1/1) ...
[2021-10-11 00:27:37,579 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:37" (1/1) ...
[2021-10-11 00:27:37,601 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-10-11 00:27:37,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-10-11 00:27:37,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-10-11 00:27:37,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-10-11 00:27:37,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:37" (1/1) ...
[2021-10-11 00:27:37,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:37" (1/1) ...
[2021-10-11 00:27:37,612 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:37" (1/1) ...
[2021-10-11 00:27:37,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:37" (1/1) ...
[2021-10-11 00:27:37,620 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:37" (1/1) ...
[2021-10-11 00:27:37,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:37" (1/1) ...
[2021-10-11 00:27:37,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:37" (1/1) ...
[2021-10-11 00:27:37,630 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-10-11 00:27:37,631 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-10-11 00:27:37,632 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-10-11 00:27:37,632 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-10-11 00:27:37,633 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:37" (1/1) ...
No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26e762ca-cfcb-4d02-a01c-11f99dcc0c70/bin/uautomizer-Z5i5R5N3CC/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-10-11 00:27:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2021-10-11 00:27:37,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-10-11 00:27:37,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2021-10-11 00:27:37,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-10-11 00:27:37,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2021-10-11 00:27:37,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-10-11 00:27:37,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-10-11 00:27:37,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2021-10-11 00:27:37,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-10-11 00:27:38,129 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-10-11 00:27:38,129 INFO L299 CfgBuilder]: Removed 8 assume(true) statements.
[2021-10-11 00:27:38,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:27:38 BoogieIcfgContainer
[2021-10-11 00:27:38,131 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-10-11 00:27:38,133 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-10-11 00:27:38,133 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-10-11 00:27:38,148 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-10-11 00:27:38,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:27:37" (1/3) ...
[2021-10-11 00:27:38,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a909a13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:27:38, skipping insertion in model container
[2021-10-11 00:27:38,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:37" (2/3) ...
[2021-10-11 00:27:38,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a909a13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:27:38, skipping insertion in model container
[2021-10-11 00:27:38,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:27:38" (3/3) ...
[2021-10-11 00:27:38,152 INFO L111 eAbstractionObserver]: Analyzing ICFG test27-2.c
[2021-10-11 00:27:38,166 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-10-11 00:27:38,170 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2021-10-11 00:27:38,181 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-10-11 00:27:38,204 INFO L377 AbstractCegarLoop]: Interprodecural is true
[2021-10-11 00:27:38,204 INFO L378 AbstractCegarLoop]: Hoare is true
[2021-10-11 00:27:38,204 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP
[2021-10-11 00:27:38,205 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-10-11 00:27:38,205 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-10-11 00:27:38,205 INFO L382 AbstractCegarLoop]: Difference is false
[2021-10-11 00:27:38,205 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-10-11 00:27:38,205 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2021-10-11 00:27:38,218 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states.
[2021-10-11 00:27:38,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2021-10-11 00:27:38,222 INFO L414 BasicCegarLoop]: Found error trace
[2021-10-11 00:27:38,222 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-11 00:27:38,223 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-10-11 00:27:38,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-11 00:27:38,228 INFO L82 PathProgramCache]: Analyzing trace with hash -631347226, now seen corresponding path program 1 times
[2021-10-11 00:27:38,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-11 00:27:38,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281478780]
[2021-10-11 00:27:38,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-11 00:27:38,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:27:38,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-11 00:27:38,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281478780]
[2021-10-11 00:27:38,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-10-11 00:27:38,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-10-11 00:27:38,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570876143]
[2021-10-11 00:27:38,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states
[2021-10-11 00:27:38,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-11 00:27:38,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2021-10-11 00:27:38,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2021-10-11 00:27:38,451 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states.
[2021-10-11 00:27:38,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-11 00:27:38,472 INFO L93 Difference]: Finished difference Result 30 states and 40 transitions.
[2021-10-11 00:27:38,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2021-10-11 00:27:38,474 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10
[2021-10-11 00:27:38,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-11 00:27:38,493 INFO L225 Difference]: With dead ends: 30
[2021-10-11 00:27:38,493 INFO L226 Difference]: Without dead ends: 13
[2021-10-11 00:27:38,496 INFO L677 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
[2021-10-11 00:27:38,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states.
[2021-10-11 00:27:38,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13.
[2021-10-11 00:27:38,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states.
[2021-10-11 00:27:38,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions.
[2021-10-11 00:27:38,537 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10
[2021-10-11 00:27:38,538 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-11 00:27:38,538 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions.
[2021-10-11 00:27:38,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states.
[2021-10-11 00:27:38,538 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions.
[2021-10-11 00:27:38,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2021-10-11 00:27:38,539 INFO L414 BasicCegarLoop]: Found error trace
[2021-10-11 00:27:38,540 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-11 00:27:38,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-10-11 00:27:38,540 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-10-11 00:27:38,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-11 00:27:38,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1697064536, now seen corresponding path program 1 times
[2021-10-11 00:27:38,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-11 00:27:38,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446557710]
[2021-10-11 00:27:38,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-11 00:27:38,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:27:38,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-11 00:27:38,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446557710]
[2021-10-11 00:27:38,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-10-11 00:27:38,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-10-11 00:27:38,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605031807]
[2021-10-11 00:27:38,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states
[2021-10-11 00:27:38,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-11 00:27:38,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-10-11 00:27:38,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-10-11 00:27:38,683 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 3 states.
[2021-10-11 00:27:38,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-11 00:27:38,741 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions.
[2021-10-11 00:27:38,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-10-11 00:27:38,741 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11
[2021-10-11 00:27:38,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-11 00:27:38,742 INFO L225 Difference]: With dead ends: 24
[2021-10-11 00:27:38,742 INFO L226 Difference]: Without dead ends: 15
[2021-10-11 00:27:38,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-10-11 00:27:38,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states.
[2021-10-11 00:27:38,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14.
[2021-10-11 00:27:38,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states.
[2021-10-11 00:27:38,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions.
[2021-10-11 00:27:38,746 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11
[2021-10-11 00:27:38,747 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-11 00:27:38,747 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions.
[2021-10-11 00:27:38,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2021-10-11 00:27:38,747 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions.
[2021-10-11 00:27:38,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2021-10-11 00:27:38,748 INFO L414 BasicCegarLoop]: Found error trace
[2021-10-11 00:27:38,748 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-11 00:27:38,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-10-11 00:27:38,748 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-10-11 00:27:38,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-11 00:27:38,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1434190826, now seen corresponding path program 1 times
[2021-10-11 00:27:38,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-11 00:27:38,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349762982]
[2021-10-11 00:27:38,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-11 00:27:38,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:27:38,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-11 00:27:38,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349762982]
[2021-10-11 00:27:38,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890481283]
[2021-10-11 00:27:38,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26e762ca-cfcb-4d02-a01c-11f99dcc0c70/bin/uautomizer-Z5i5R5N3CC/z3
Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-11 00:27:38,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:27:38,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjunts are in the unsatisfiable core
[2021-10-11 00:27:38,975 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-11 00:27:39,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-11 00:27:39,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-11 00:27:39,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5
[2021-10-11 00:27:39,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494130019]
[2021-10-11 00:27:39,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states
[2021-10-11 00:27:39,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-11 00:27:39,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-10-11 00:27:39,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20
[2021-10-11 00:27:39,052 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 5 states.
[2021-10-11 00:27:39,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-11 00:27:39,096 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions.
[2021-10-11 00:27:39,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-10-11 00:27:39,098 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13
[2021-10-11 00:27:39,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-11 00:27:39,099 INFO L225 Difference]: With dead ends: 26
[2021-10-11 00:27:39,099 INFO L226 Difference]: Without dead ends: 17
[2021-10-11 00:27:39,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20
[2021-10-11 00:27:39,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states.
[2021-10-11 00:27:39,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16.
[2021-10-11 00:27:39,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states.
[2021-10-11 00:27:39,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions.
[2021-10-11 00:27:39,108 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 13
[2021-10-11 00:27:39,108 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-11 00:27:39,108 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions.
[2021-10-11 00:27:39,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2021-10-11 00:27:39,108 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions.
[2021-10-11 00:27:39,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2021-10-11 00:27:39,109 INFO L414 BasicCegarLoop]: Found error trace
[2021-10-11 00:27:39,109 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-11 00:27:39,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2
[2021-10-11 00:27:39,329 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-10-11 00:27:39,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-11 00:27:39,329 INFO L82 PathProgramCache]: Analyzing trace with hash 201480788, now seen corresponding path program 2 times
[2021-10-11 00:27:39,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-11 00:27:39,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865995234]
[2021-10-11 00:27:39,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-11 00:27:39,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:27:39,466 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-11 00:27:39,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865995234]
[2021-10-11 00:27:39,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373045371]
[2021-10-11 00:27:39,467 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26e762ca-cfcb-4d02-a01c-11f99dcc0c70/bin/uautomizer-Z5i5R5N3CC/z3
Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-11 00:27:39,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-10-11 00:27:39,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-11 00:27:39,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 4 conjunts are in the unsatisfiable core
[2021-10-11 00:27:39,602 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-11 00:27:39,650 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-11 00:27:39,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-11 00:27:39,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6
[2021-10-11 00:27:39,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389416845]
[2021-10-11 00:27:39,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states
[2021-10-11 00:27:39,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-11 00:27:39,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-10-11 00:27:39,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30
[2021-10-11 00:27:39,654 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 6 states.
[2021-10-11 00:27:39,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-11 00:27:39,693 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions.
[2021-10-11 00:27:39,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-10-11 00:27:39,694 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15
[2021-10-11 00:27:39,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-11 00:27:39,695 INFO L225 Difference]: With dead ends: 28
[2021-10-11 00:27:39,696 INFO L226 Difference]: Without dead ends: 19
[2021-10-11 00:27:39,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30
[2021-10-11 00:27:39,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states.
[2021-10-11 00:27:39,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18.
[2021-10-11 00:27:39,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states.
[2021-10-11 00:27:39,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions.
[2021-10-11 00:27:39,705 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 15
[2021-10-11 00:27:39,705 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-11 00:27:39,705 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions.
[2021-10-11 00:27:39,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2021-10-11 00:27:39,705 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions.
[2021-10-11 00:27:39,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2021-10-11 00:27:39,707 INFO L414 BasicCegarLoop]: Found error trace
[2021-10-11 00:27:39,707 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-11 00:27:39,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-11 00:27:39,934 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-10-11 00:27:39,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-11 00:27:39,934 INFO L82 PathProgramCache]: Analyzing trace with hash 123871506, now seen corresponding path program 3 times
[2021-10-11 00:27:39,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-11 00:27:39,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880082571]
[2021-10-11 00:27:39,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-11 00:27:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:27:40,023 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-11 00:27:40,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880082571]
[2021-10-11 00:27:40,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037331065]
[2021-10-11 00:27:40,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26e762ca-cfcb-4d02-a01c-11f99dcc0c70/bin/uautomizer-Z5i5R5N3CC/z3
Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-11 00:27:40,196 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2021-10-11 00:27:40,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-11 00:27:40,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 5 conjunts are in the unsatisfiable core
[2021-10-11 00:27:40,199 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-11 00:27:40,231 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-11 00:27:40,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-11 00:27:40,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7
[2021-10-11 00:27:40,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119000591]
[2021-10-11 00:27:40,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states
[2021-10-11 00:27:40,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-11 00:27:40,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-10-11 00:27:40,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2021-10-11 00:27:40,233 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 7 states.
[2021-10-11 00:27:40,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-11 00:27:40,267 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions.
[2021-10-11 00:27:40,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2021-10-11 00:27:40,267 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17
[2021-10-11 00:27:40,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-11 00:27:40,268 INFO L225 Difference]: With dead ends: 30
[2021-10-11 00:27:40,268 INFO L226 Difference]: Without dead ends: 21
[2021-10-11 00:27:40,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2021-10-11 00:27:40,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states.
[2021-10-11 00:27:40,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20.
[2021-10-11 00:27:40,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states.
[2021-10-11 00:27:40,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions.
[2021-10-11 00:27:40,272 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 17
[2021-10-11 00:27:40,272 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-11 00:27:40,272 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions.
[2021-10-11 00:27:40,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states.
[2021-10-11 00:27:40,273 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions.
[2021-10-11 00:27:40,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2021-10-11 00:27:40,273 INFO L414 BasicCegarLoop]: Found error trace
[2021-10-11 00:27:40,273 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-11 00:27:40,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-11 00:27:40,498 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-10-11 00:27:40,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-11 00:27:40,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1444204464, now seen corresponding path program 4 times
[2021-10-11 00:27:40,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-11 00:27:40,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283502939]
[2021-10-11 00:27:40,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-11 00:27:40,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:27:40,603 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-11 00:27:40,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283502939]
[2021-10-11 00:27:40,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349182009]
[2021-10-11 00:27:40,604 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26e762ca-cfcb-4d02-a01c-11f99dcc0c70/bin/uautomizer-Z5i5R5N3CC/z3
Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-11 00:27:40,696 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-10-11 00:27:40,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-11 00:27:40,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core
[2021-10-11 00:27:40,700 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-11 00:27:40,746 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-11 00:27:40,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-11 00:27:40,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8
[2021-10-11 00:27:40,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010610448]
[2021-10-11 00:27:40,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states
[2021-10-11 00:27:40,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-11 00:27:40,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2021-10-11 00:27:40,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56
[2021-10-11 00:27:40,748 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 8 states.
[2021-10-11 00:27:40,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-11 00:27:40,790 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions.
[2021-10-11 00:27:40,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2021-10-11 00:27:40,791 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19
[2021-10-11 00:27:40,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-11 00:27:40,792 INFO L225 Difference]: With dead ends: 32
[2021-10-11 00:27:40,792 INFO L226 Difference]: Without dead ends: 23
[2021-10-11 00:27:40,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56
[2021-10-11 00:27:40,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states.
[2021-10-11 00:27:40,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22.
[2021-10-11 00:27:40,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states.
[2021-10-11 00:27:40,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions.
[2021-10-11 00:27:40,796 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 19
[2021-10-11 00:27:40,797 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-11 00:27:40,797 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions.
[2021-10-11 00:27:40,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states.
[2021-10-11 00:27:40,797 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions.
[2021-10-11 00:27:40,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2021-10-11 00:27:40,798 INFO L414 BasicCegarLoop]: Found error trace
[2021-10-11 00:27:40,798 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-11 00:27:41,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-11 00:27:41,026 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-10-11 00:27:41,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-11 00:27:41,026 INFO L82 PathProgramCache]: Analyzing trace with hash -831690738, now seen corresponding path program 5 times
[2021-10-11 00:27:41,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-11 00:27:41,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318868251]
[2021-10-11 00:27:41,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-11 00:27:41,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:27:41,118 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-11 00:27:41,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318868251]
[2021-10-11 00:27:41,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830258190]
[2021-10-11 00:27:41,118 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26e762ca-cfcb-4d02-a01c-11f99dcc0c70/bin/uautomizer-Z5i5R5N3CC/z3
Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-11 00:27:41,433 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s)
[2021-10-11 00:27:41,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-11 00:27:41,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-10-11 00:27:41,437 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-11 00:27:41,477 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-11 00:27:41,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-11 00:27:41,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9
[2021-10-11 00:27:41,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106238340]
[2021-10-11 00:27:41,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states
[2021-10-11 00:27:41,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-11 00:27:41,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2021-10-11 00:27:41,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72
[2021-10-11 00:27:41,483 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 9 states.
[2021-10-11 00:27:41,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-11 00:27:41,544 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions.
[2021-10-11 00:27:41,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2021-10-11 00:27:41,545 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21
[2021-10-11 00:27:41,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-11 00:27:41,546 INFO L225 Difference]: With dead ends: 34
[2021-10-11 00:27:41,546 INFO L226 Difference]: Without dead ends: 25
[2021-10-11 00:27:41,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72
[2021-10-11 00:27:41,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states.
[2021-10-11 00:27:41,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24.
[2021-10-11 00:27:41,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states.
[2021-10-11 00:27:41,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions.
[2021-10-11 00:27:41,555 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 21
[2021-10-11 00:27:41,555 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-11 00:27:41,555 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions.
[2021-10-11 00:27:41,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states.
[2021-10-11 00:27:41,555 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions.
[2021-10-11 00:27:41,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2021-10-11 00:27:41,556 INFO L414 BasicCegarLoop]: Found error trace
[2021-10-11 00:27:41,556 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-11 00:27:41,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6
[2021-10-11 00:27:41,782 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-10-11 00:27:41,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-11 00:27:41,782 INFO L82 PathProgramCache]: Analyzing trace with hash -616519604, now seen corresponding path program 6 times
[2021-10-11 00:27:41,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-11 00:27:41,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729807586]
[2021-10-11 00:27:41,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-11 00:27:41,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:27:41,884 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-11 00:27:41,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729807586]
[2021-10-11 00:27:41,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892466236]
[2021-10-11 00:27:41,885 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26e762ca-cfcb-4d02-a01c-11f99dcc0c70/bin/uautomizer-Z5i5R5N3CC/z3
Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-11 00:27:43,219 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s)
[2021-10-11 00:27:43,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-11 00:27:43,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 8 conjunts are in the unsatisfiable core
[2021-10-11 00:27:43,224 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-11 00:27:43,268 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-11 00:27:43,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-11 00:27:43,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10
[2021-10-11 00:27:43,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78069600]
[2021-10-11 00:27:43,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states
[2021-10-11 00:27:43,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-11 00:27:43,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2021-10-11 00:27:43,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90
[2021-10-11 00:27:43,271 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 10 states.
[2021-10-11 00:27:43,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-11 00:27:43,313 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions.
[2021-10-11 00:27:43,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2021-10-11 00:27:43,314 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23
[2021-10-11 00:27:43,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-11 00:27:43,315 INFO L225 Difference]: With dead ends: 36
[2021-10-11 00:27:43,315 INFO L226 Difference]: Without dead ends: 27
[2021-10-11 00:27:43,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90
[2021-10-11 00:27:43,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2021-10-11 00:27:43,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26.
[2021-10-11 00:27:43,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2021-10-11 00:27:43,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions.
[2021-10-11 00:27:43,319 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 23
[2021-10-11 00:27:43,319 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-11 00:27:43,319 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions.
[2021-10-11 00:27:43,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states.
[2021-10-11 00:27:43,319 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions.
[2021-10-11 00:27:43,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2021-10-11 00:27:43,320 INFO L414 BasicCegarLoop]: Found error trace
[2021-10-11 00:27:43,320 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-11 00:27:43,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-11 00:27:43,546 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-10-11 00:27:43,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-11 00:27:43,546 INFO L82 PathProgramCache]: Analyzing trace with hash 4509962, now seen corresponding path program 7 times
[2021-10-11 00:27:43,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-11 00:27:43,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460456223]
[2021-10-11 00:27:43,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-11 00:27:43,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:27:43,630 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-11 00:27:43,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460456223]
[2021-10-11 00:27:43,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314289201]
[2021-10-11 00:27:43,631 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26e762ca-cfcb-4d02-a01c-11f99dcc0c70/bin/uautomizer-Z5i5R5N3CC/z3
Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-11 00:27:43,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:27:43,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 9 conjunts are in the unsatisfiable core
[2021-10-11 00:27:43,714 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-11 00:27:43,770 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-11 00:27:43,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-11 00:27:43,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11
[2021-10-11 00:27:43,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420369254]
[2021-10-11 00:27:43,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states
[2021-10-11 00:27:43,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-11 00:27:43,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2021-10-11 00:27:43,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110
[2021-10-11 00:27:43,772 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 11 states.
[2021-10-11 00:27:43,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-11 00:27:43,823 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions.
[2021-10-11 00:27:43,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2021-10-11 00:27:43,824 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25
[2021-10-11 00:27:43,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-11 00:27:43,825 INFO L225 Difference]: With dead ends: 38
[2021-10-11 00:27:43,825 INFO L226 Difference]: Without dead ends: 29
[2021-10-11 00:27:43,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110
[2021-10-11 00:27:43,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2021-10-11 00:27:43,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28.
[2021-10-11 00:27:43,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2021-10-11 00:27:43,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions.
[2021-10-11 00:27:43,829 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 25
[2021-10-11 00:27:43,829 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-11 00:27:43,829 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions.
[2021-10-11 00:27:43,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states.
[2021-10-11 00:27:43,829 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions.
[2021-10-11 00:27:43,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2021-10-11 00:27:43,830 INFO L414 BasicCegarLoop]: Found error trace
[2021-10-11 00:27:43,830 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-11 00:27:44,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-11 00:27:44,058 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-10-11 00:27:44,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-11 00:27:44,058 INFO L82 PathProgramCache]: Analyzing trace with hash -186531256, now seen corresponding path program 8 times
[2021-10-11 00:27:44,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-11 00:27:44,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597342956]
[2021-10-11 00:27:44,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-11 00:27:44,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:27:44,160 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-11 00:27:44,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597342956]
[2021-10-11 00:27:44,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159160817]
[2021-10-11 00:27:44,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26e762ca-cfcb-4d02-a01c-11f99dcc0c70/bin/uautomizer-Z5i5R5N3CC/z3
Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-11 00:27:44,278 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-10-11 00:27:44,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-11 00:27:44,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 10 conjunts are in the unsatisfiable core
[2021-10-11 00:27:44,282 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-11 00:27:44,356 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-11 00:27:44,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-11 00:27:44,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12
[2021-10-11 00:27:44,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067361663]
[2021-10-11 00:27:44,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states
[2021-10-11 00:27:44,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-11 00:27:44,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2021-10-11 00:27:44,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132
[2021-10-11 00:27:44,358 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 12 states.
[2021-10-11 00:27:44,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-11 00:27:44,420 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions.
[2021-10-11 00:27:44,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2021-10-11 00:27:44,421 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27
[2021-10-11 00:27:44,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-11 00:27:44,424 INFO L225 Difference]: With dead ends: 40
[2021-10-11 00:27:44,424 INFO L226 Difference]: Without dead ends: 31
[2021-10-11 00:27:44,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132
[2021-10-11 00:27:44,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states.
[2021-10-11 00:27:44,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30.
[2021-10-11 00:27:44,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2021-10-11 00:27:44,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions.
[2021-10-11 00:27:44,428 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 27
[2021-10-11 00:27:44,428 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-11 00:27:44,428 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions.
[2021-10-11 00:27:44,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states.
[2021-10-11 00:27:44,428 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions.
[2021-10-11 00:27:44,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2021-10-11 00:27:44,431 INFO L414 BasicCegarLoop]: Found error trace
[2021-10-11 00:27:44,431 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-11 00:27:44,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2021-10-11 00:27:44,632 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-10-11 00:27:44,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-11 00:27:44,632 INFO L82 PathProgramCache]: Analyzing trace with hash 906451974, now seen corresponding path program 9 times
[2021-10-11 00:27:44,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-11 00:27:44,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680921480]
[2021-10-11 00:27:44,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-11 00:27:44,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-11 00:27:44,733 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-11 00:27:44,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680921480]
[2021-10-11 00:27:44,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032523864]
[2021-10-11 00:27:44,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26e762ca-cfcb-4d02-a01c-11f99dcc0c70/bin/uautomizer-Z5i5R5N3CC/z3
Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-11 00:27:51,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s)
[2021-10-11 00:27:51,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-11 00:27:51,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 11 conjunts are in the unsatisfiable core
[2021-10-11 00:27:51,249 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-11 00:27:51,314 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-11 00:27:51,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-11 00:27:51,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13
[2021-10-11 00:27:51,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794716721]
[2021-10-11 00:27:51,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states
[2021-10-11 00:27:51,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-11 00:27:51,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2021-10-11 00:27:51,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156
[2021-10-11 00:27:51,316 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 13 states.
[2021-10-11 00:27:51,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-11 00:27:51,374 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions.
[2021-10-11 00:27:51,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2021-10-11 00:27:51,375 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 29
[2021-10-11 00:27:51,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-11 00:27:51,378 INFO L225 Difference]: With dead ends: 41
[2021-10-11 00:27:51,378 INFO L226 Difference]: Without dead ends: 32
[2021-10-11 00:27:51,378 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156
[2021-10-11 00:27:51,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states.
[2021-10-11 00:27:51,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32.
[2021-10-11 00:27:51,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2021-10-11 00:27:51,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions.
[2021-10-11 00:27:51,385 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 29
[2021-10-11 00:27:51,385 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-11 00:27:51,385 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions.
[2021-10-11 00:27:51,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states.
[2021-10-11 00:27:51,385 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions.
[2021-10-11 00:27:51,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2021-10-11 00:27:51,388 INFO L414 BasicCegarLoop]: Found error trace
[2021-10-11 00:27:51,389 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-11 00:27:51,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-11 00:27:51,598 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-10-11 00:27:51,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-11 00:27:51,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1003651516, now seen corresponding path program 10 times
[2021-10-11 00:27:51,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-11 00:27:51,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928172654]
[2021-10-11 00:27:51,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-11 00:27:51,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-10-11 00:27:51,879 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-10-11 00:27:52,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-10-11 00:27:52,043 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-10-11 00:27:52,078 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2021-10-11 00:27:52,078 INFO L523 BasicCegarLoop]: Counterexample might be feasible
[2021-10-11 00:27:52,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2021-10-11 00:27:52,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:27:52 BoogieIcfgContainer
[2021-10-11 00:27:52,153 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-10-11 00:27:52,153 INFO L113 PluginConnector]: ------------------------Witness Printer----------------------------
[2021-10-11 00:27:52,153 INFO L271 PluginConnector]: Initializing Witness Printer...
[2021-10-11 00:27:52,154 INFO L275 PluginConnector]: Witness Printer initialized
[2021-10-11 00:27:52,154 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:27:38" (3/4) ...
[2021-10-11 00:27:52,156 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample
[2021-10-11 00:27:52,242 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26e762ca-cfcb-4d02-a01c-11f99dcc0c70/bin/uautomizer-Z5i5R5N3CC/witness.graphml
[2021-10-11 00:27:52,243 INFO L132 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2021-10-11 00:27:52,244 INFO L168 Benchmark]: Toolchain (without parser) took 14973.77 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 76.9 MB in the beginning and 87.1 MB in the end (delta: -10.2 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB.
[2021-10-11 00:27:52,245 INFO L168 Benchmark]: CDTParser took 0.79 ms. Allocated memory is still 88.1 MB. Free memory was 47.4 MB in the beginning and 47.3 MB in the end (delta: 42.6 kB). There was no memory consumed. Max. memory is 16.1 GB.
[2021-10-11 00:27:52,245 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.74 ms. Allocated memory is still 107.0 MB. Free memory was 76.9 MB in the beginning and 83.1 MB in the end (delta: -6.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB.
[2021-10-11 00:27:52,246 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.19 ms. Allocated memory is still 107.0 MB. Free memory was 82.8 MB in the beginning and 81.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB.
[2021-10-11 00:27:52,246 INFO L168 Benchmark]: Boogie Preprocessor took 29.08 ms. Allocated memory is still 107.0 MB. Free memory was 81.2 MB in the beginning and 79.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
[2021-10-11 00:27:52,246 INFO L168 Benchmark]: RCFGBuilder took 499.79 ms. Allocated memory is still 107.0 MB. Free memory was 79.5 MB in the beginning and 61.0 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB.
[2021-10-11 00:27:52,247 INFO L168 Benchmark]: TraceAbstraction took 14020.14 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 60.6 MB in the beginning and 91.3 MB in the end (delta: -30.7 MB). Peak memory consumption was 54.8 MB. Max. memory is 16.1 GB.
[2021-10-11 00:27:52,247 INFO L168 Benchmark]: Witness Printer took 89.29 ms. Allocated memory is still 130.0 MB. Free memory was 91.3 MB in the beginning and 87.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB.
[2021-10-11 00:27:52,249 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.79 ms. Allocated memory is still 88.1 MB. Free memory was 47.4 MB in the beginning and 47.3 MB in the end (delta: 42.6 kB). There was no memory consumed. Max. memory is 16.1 GB.
* CACSL2BoogieTranslator took 291.74 ms. Allocated memory is still 107.0 MB. Free memory was 76.9 MB in the beginning and 83.1 MB in the end (delta: -6.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB.
* Boogie Procedure Inliner took 37.19 ms. Allocated memory is still 107.0 MB. Free memory was 82.8 MB in the beginning and 81.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB.
* Boogie Preprocessor took 29.08 ms. Allocated memory is still 107.0 MB. Free memory was 81.2 MB in the beginning and 79.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
* RCFGBuilder took 499.79 ms. Allocated memory is still 107.0 MB. Free memory was 79.5 MB in the beginning and 61.0 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB.
* TraceAbstraction took 14020.14 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 60.6 MB in the beginning and 91.3 MB in the end (delta: -30.7 MB). Peak memory consumption was 54.8 MB. Max. memory is 16.1 GB.
* Witness Printer took 89.29 ms. Allocated memory is still 130.0 MB. Free memory was 91.3 MB in the beginning and 87.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- CounterExampleResult [Line: 55]: a call to reach_error is reachable
a call to reach_error is reachable
We found a FailurePath:
[L23] struct cont cont;
[L24] struct dummy dummy;
[L25] struct dummy *dummies[10];
[L26] int a[10];
[L27] int i, *pa;
[L28] i = __VERIFIER_nondet_int()
[L29] int j = 0;
[L29] COND TRUE j < 10
[L30] a[j] = __VERIFIER_nondet_int()
[L34] dummies[j] = 0
[L29] j++
[L29] COND TRUE j < 10
[L30] a[j] = __VERIFIER_nondet_int()
[L34] dummies[j] = 0
[L29] j++
[L29] COND TRUE j < 10
[L30] a[j] = __VERIFIER_nondet_int()
[L34] dummies[j] = 0
[L29] j++
[L29] COND TRUE j < 10
[L30] a[j] = __VERIFIER_nondet_int()
[L34] dummies[j] = 0
[L29] j++
[L29] COND TRUE j < 10
[L30] a[j] = __VERIFIER_nondet_int()
[L34] dummies[j] = 0
[L29] j++
[L29] COND TRUE j < 10
[L30] a[j] = __VERIFIER_nondet_int()
[L34] dummies[j] = 0
[L29] j++
[L29] COND TRUE j < 10
[L30] a[j] = __VERIFIER_nondet_int()
[L34] dummies[j] = 0
[L29] j++
[L29] COND TRUE j < 10
[L30] a[j] = __VERIFIER_nondet_int()
[L34] dummies[j] = 0
[L29] j++
[L29] COND TRUE j < 10
[L30] a[j] = __VERIFIER_nondet_int()
[L34] dummies[j] = 0
[L29] j++
[L29] COND TRUE j < 10
[L30] a[j] = __VERIFIER_nondet_int()
[L34] dummies[j] = 0
[L29] j++
[L29] COND FALSE !(j < 10)
[L36] COND TRUE i >= 0 && i < 9
[L37] a[i] = i
[L38] dummy.array = &a[i]
[L39] dummies[i + 1] = &dummy
[L40] cont.array = &dummies[0]
[L41] EXPR cont.array
[L41] EXPR cont.array[i]
[L41] EXPR cont.array[i]->array
[L41] pa = &cont.array[i]->array[i]
[L42] EXPR a[i]
[L42] COND TRUE a[i] > 0
[L43] EXPR dummies[i + 1]
[L43] EXPR dummies[i + 1]->array
[L43] EXPR dummies[i + 1]->array[i]
[L43] i = dummies[i + 1]->array[i] - 10
[L44] EXPR \read(*pa)
[L44] COND FALSE !(i < *pa)
[L18] EXPR pc->array
[L18] EXPR pc->array[i]
[L18] EXPR pc->array[i]->array
[L18] EXPR pc->array[i]->array[i]
[L18] return pc->array[i]->array[i] == i;
[L47] COND TRUE !check(&cont, i)
[L55] reach_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.8s, OverallIterations: 12, TraceHistogramMax: 10, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 140 SDtfs, 55 SDslu, 520 SDs, 0 SdLazy, 189 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 257 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 9 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 9.0s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 430 NumberOfCodeBlocks, 430 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 379 ConstructedInterpolants, 0 QuantifiedInterpolants, 16761 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1404 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 20 InterpolantComputations, 2 PerfectInterpolantSequences, 0/570 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!
Received shutdown request...