./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/filter2_alt.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6660a10-1521-4550-9164-41047d5b7d3d/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6660a10-1521-4550-9164-41047d5b7d3d/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6660a10-1521-4550-9164-41047d5b7d3d/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6660a10-1521-4550-9164-41047d5b7d3d/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/filter2_alt.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6660a10-1521-4550-9164-41047d5b7d3d/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6660a10-1521-4550-9164-41047d5b7d3d/bin/uautomizer-YU5uOKAj3y --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5bc48f0b37b49094aa2ed7125525fbb7b9a95c5af6fff8426a24c4fcf99bb295 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:41:27,471 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:41:27,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:41:27,529 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:41:27,530 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:41:27,533 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:41:27,535 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:41:27,539 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:41:27,542 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:41:27,547 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:41:27,549 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:41:27,550 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:41:27,551 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:41:27,553 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:41:27,555 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:41:27,559 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:41:27,564 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:41:27,565 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:41:27,568 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:41:27,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:41:27,577 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:41:27,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:41:27,582 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:41:27,583 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:41:27,591 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:41:27,592 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:41:27,592 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:41:27,594 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:41:27,595 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:41:27,596 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:41:27,596 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:41:27,597 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:41:27,599 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:41:27,601 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:41:27,602 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:41:27,602 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:41:27,603 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:41:27,603 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:41:27,604 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:41:27,605 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:41:27,605 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:41:27,606 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6660a10-1521-4550-9164-41047d5b7d3d/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-13 18:41:27,645 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:41:27,645 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:41:27,646 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:41:27,646 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:41:27,653 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:41:27,653 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:41:27,654 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:41:27,654 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:41:27,654 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:41:27,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:41:27,655 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:41:27,656 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:41:27,656 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:41:27,656 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:41:27,656 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:41:27,657 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:41:27,657 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:41:27,657 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:41:27,657 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:41:27,658 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:41:27,658 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:41:27,658 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:41:27,658 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:41:27,659 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:41:27,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:41:27,659 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:41:27,659 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:41:27,660 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:41:27,660 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:41:27,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:41:27,662 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:41:27,662 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:41:27,662 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:41:27,662 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:41:27,663 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_e6660a10-1521-4550-9164-41047d5b7d3d/bin/uautomizer-YU5uOKAj3y/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6660a10-1521-4550-9164-41047d5b7d3d/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bc48f0b37b49094aa2ed7125525fbb7b9a95c5af6fff8426a24c4fcf99bb295 [2021-11-13 18:41:27,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:41:27,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:41:27,973 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:41:27,974 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:41:27,978 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:41:27,980 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6660a10-1521-4550-9164-41047d5b7d3d/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/float-benchs/filter2_alt.c [2021-11-13 18:41:28,066 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6660a10-1521-4550-9164-41047d5b7d3d/bin/uautomizer-YU5uOKAj3y/data/280f6d557/57f93417a5e34a59bfb60da2781ca0a2/FLAGd42376f54 [2021-11-13 18:41:28,497 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:41:28,498 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6660a10-1521-4550-9164-41047d5b7d3d/sv-benchmarks/c/float-benchs/filter2_alt.c [2021-11-13 18:41:28,503 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6660a10-1521-4550-9164-41047d5b7d3d/bin/uautomizer-YU5uOKAj3y/data/280f6d557/57f93417a5e34a59bfb60da2781ca0a2/FLAGd42376f54 [2021-11-13 18:41:28,899 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6660a10-1521-4550-9164-41047d5b7d3d/bin/uautomizer-YU5uOKAj3y/data/280f6d557/57f93417a5e34a59bfb60da2781ca0a2 [2021-11-13 18:41:28,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:41:28,903 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:41:28,904 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:41:28,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:41:28,911 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:41:28,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:41:28" (1/1) ... [2021-11-13 18:41:28,913 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b932638 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:41:28, skipping insertion in model container [2021-11-13 18:41:28,913 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:41:28" (1/1) ... [2021-11-13 18:41:28,919 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:41:28,971 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:41:29,091 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6660a10-1521-4550-9164-41047d5b7d3d/sv-benchmarks/c/float-benchs/filter2_alt.c[631,644] [2021-11-13 18:41:29,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:41:29,119 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:41:29,131 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6660a10-1521-4550-9164-41047d5b7d3d/sv-benchmarks/c/float-benchs/filter2_alt.c[631,644] [2021-11-13 18:41:29,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:41:29,154 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:41:29,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:41:29 WrapperNode [2021-11-13 18:41:29,154 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:41:29,155 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:41:29,156 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:41:29,156 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:41:29,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:41:29" (1/1) ... [2021-11-13 18:41:29,169 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:41:29" (1/1) ... [2021-11-13 18:41:29,189 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:41:29,190 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:41:29,190 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:41:29,190 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:41:29,198 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:41:29" (1/1) ... [2021-11-13 18:41:29,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:41:29" (1/1) ... [2021-11-13 18:41:29,200 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:41:29" (1/1) ... [2021-11-13 18:41:29,201 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:41:29" (1/1) ... [2021-11-13 18:41:29,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:41:29" (1/1) ... [2021-11-13 18:41:29,212 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:41:29" (1/1) ... [2021-11-13 18:41:29,213 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:41:29" (1/1) ... [2021-11-13 18:41:29,215 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:41:29,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:41:29,216 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:41:29,216 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:41:29,217 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:41:29" (1/1) ... [2021-11-13 18:41:29,224 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:41:29,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6660a10-1521-4550-9164-41047d5b7d3d/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:41:29,246 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6660a10-1521-4550-9164-41047d5b7d3d/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:41:29,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6660a10-1521-4550-9164-41047d5b7d3d/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:41:29,302 INFO L130 BoogieDeclarations]: Found specification of procedure RANDOM_INPUT [2021-11-13 18:41:29,302 INFO L138 BoogieDeclarations]: Found implementation of procedure RANDOM_INPUT [2021-11-13 18:41:29,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:41:29,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:41:29,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-13 18:41:29,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-13 18:41:29,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:41:29,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:41:29,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-11-13 18:41:29,512 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:41:29,513 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-13 18:41:29,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:41:29 BoogieIcfgContainer [2021-11-13 18:41:29,515 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:41:29,516 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:41:29,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:41:29,520 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:41:29,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:41:28" (1/3) ... [2021-11-13 18:41:29,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e410a48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:41:29, skipping insertion in model container [2021-11-13 18:41:29,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:41:29" (2/3) ... [2021-11-13 18:41:29,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e410a48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:41:29, skipping insertion in model container [2021-11-13 18:41:29,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:41:29" (3/3) ... [2021-11-13 18:41:29,523 INFO L111 eAbstractionObserver]: Analyzing ICFG filter2_alt.c [2021-11-13 18:41:29,528 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:41:29,529 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 18:41:29,576 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:41:29,583 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 18:41:29,583 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 18:41:29,604 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 18:41:29,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-13 18:41:29,611 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:41:29,638 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:41:29,639 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:41:29,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:41:29,652 INFO L85 PathProgramCache]: Analyzing trace with hash -254494899, now seen corresponding path program 1 times [2021-11-13 18:41:29,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:41:29,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936607348] [2021-11-13 18:41:29,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:41:29,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:41:29,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:41:29,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:41:29,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:41:29,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 18:41:29,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:41:29,907 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-13 18:41:29,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:41:29,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936607348] [2021-11-13 18:41:29,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936607348] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:41:29,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:41:29,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 18:41:29,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017006665] [2021-11-13 18:41:29,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:41:29,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 18:41:29,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:41:29,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 18:41:29,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 18:41:29,956 INFO L87 Difference]: Start difference. First operand has 23 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 18:41:29,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:41:29,976 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2021-11-13 18:41:29,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 18:41:29,978 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2021-11-13 18:41:29,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:41:29,985 INFO L225 Difference]: With dead ends: 39 [2021-11-13 18:41:29,985 INFO L226 Difference]: Without dead ends: 19 [2021-11-13 18:41:29,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 18:41:29,992 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.62ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 18:41:29,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.62ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 18:41:30,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-13 18:41:30,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-11-13 18:41:30,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 18:41:30,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-11-13 18:41:30,031 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 20 [2021-11-13 18:41:30,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:41:30,031 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-11-13 18:41:30,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 18:41:30,032 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-11-13 18:41:30,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-13 18:41:30,034 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:41:30,034 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:41:30,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 18:41:30,035 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:41:30,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:41:30,036 INFO L85 PathProgramCache]: Analyzing trace with hash -2084909879, now seen corresponding path program 1 times [2021-11-13 18:41:30,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:41:30,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783260534] [2021-11-13 18:41:30,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:41:30,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:41:30,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:41:30,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:41:30,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:41:30,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 18:41:30,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:41:30,192 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-13 18:41:30,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:41:30,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783260534] [2021-11-13 18:41:30,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783260534] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:41:30,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:41:30,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:41:30,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710637910] [2021-11-13 18:41:30,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:41:30,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:41:30,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:41:30,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:41:30,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:41:30,200 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 18:41:30,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:41:30,236 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2021-11-13 18:41:30,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:41:30,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2021-11-13 18:41:30,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:41:30,238 INFO L225 Difference]: With dead ends: 45 [2021-11-13 18:41:30,238 INFO L226 Difference]: Without dead ends: 30 [2021-11-13 18:41:30,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:41:30,240 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 7 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.43ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.24ms IncrementalHoareTripleChecker+Time [2021-11-13 18:41:30,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 41 Invalid, 5 Unknown, 0 Unchecked, 2.43ms Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 17.24ms Time] [2021-11-13 18:41:30,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-13 18:41:30,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2021-11-13 18:41:30,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-13 18:41:30,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2021-11-13 18:41:30,250 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 20 [2021-11-13 18:41:30,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:41:30,250 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2021-11-13 18:41:30,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 18:41:30,251 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2021-11-13 18:41:30,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-13 18:41:30,252 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:41:30,252 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:41:30,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 18:41:30,253 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:41:30,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:41:30,254 INFO L85 PathProgramCache]: Analyzing trace with hash 371954385, now seen corresponding path program 1 times [2021-11-13 18:41:30,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:41:30,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975921773] [2021-11-13 18:41:30,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:41:30,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:41:30,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:41:30,328 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:41:30,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:41:30,436 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 18:41:30,437 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-13 18:41:30,438 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-13 18:41:30,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 18:41:30,446 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-13 18:41:30,449 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 18:41:30,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 06:41:30 BoogieIcfgContainer [2021-11-13 18:41:30,506 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-13 18:41:30,507 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-13 18:41:30,507 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-13 18:41:30,508 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-13 18:41:30,508 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:41:29" (3/4) ... [2021-11-13 18:41:30,511 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-13 18:41:30,511 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-13 18:41:30,512 INFO L158 Benchmark]: Toolchain (without parser) took 1608.95ms. Allocated memory was 96.5MB in the beginning and 130.0MB in the end (delta: 33.6MB). Free memory was 57.4MB in the beginning and 73.7MB in the end (delta: -16.4MB). Peak memory consumption was 16.3MB. Max. memory is 16.1GB. [2021-11-13 18:41:30,513 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 96.5MB. Free memory is still 74.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:41:30,513 INFO L158 Benchmark]: CACSL2BoogieTranslator took 250.41ms. Allocated memory is still 96.5MB. Free memory was 57.2MB in the beginning and 65.6MB in the end (delta: -8.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 18:41:30,514 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.84ms. Allocated memory is still 96.5MB. Free memory was 65.6MB in the beginning and 63.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 18:41:30,515 INFO L158 Benchmark]: Boogie Preprocessor took 25.52ms. Allocated memory is still 96.5MB. Free memory was 63.9MB in the beginning and 62.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 18:41:30,515 INFO L158 Benchmark]: RCFGBuilder took 298.79ms. Allocated memory is still 96.5MB. Free memory was 62.6MB in the beginning and 51.3MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-13 18:41:30,516 INFO L158 Benchmark]: TraceAbstraction took 990.14ms. Allocated memory was 96.5MB in the beginning and 130.0MB in the end (delta: 33.6MB). Free memory was 51.0MB in the beginning and 74.5MB in the end (delta: -23.5MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. [2021-11-13 18:41:30,517 INFO L158 Benchmark]: Witness Printer took 4.08ms. Allocated memory is still 130.0MB. Free memory was 74.5MB in the beginning and 73.7MB in the end (delta: 769.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:41:30,521 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 96.5MB. Free memory is still 74.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 250.41ms. Allocated memory is still 96.5MB. Free memory was 57.2MB in the beginning and 65.6MB in the end (delta: -8.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.84ms. Allocated memory is still 96.5MB. Free memory was 65.6MB in the beginning and 63.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.52ms. Allocated memory is still 96.5MB. Free memory was 63.9MB in the beginning and 62.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 298.79ms. Allocated memory is still 96.5MB. Free memory was 62.6MB in the beginning and 51.3MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 990.14ms. Allocated memory was 96.5MB in the beginning and 130.0MB in the end (delta: 33.6MB). Free memory was 51.0MB in the beginning and 74.5MB in the end (delta: -23.5MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. * Witness Printer took 4.08ms. Allocated memory is still 130.0MB. Free memory was 74.5MB in the beginning and 73.7MB in the end (delta: 769.0kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 43, overapproximation of someBinaryArithmeticFLOAToperation at line 38. Possible FailurePath: [L19] BOOLEAN INIT; [L20] float P, X; [L32] static float E[2], S[2]; VAL [E={6:0}, INIT=0, P=0, S={7:0}, X=0] [L52] CALL, EXPR RANDOM_INPUT() VAL [E={6:0}, INIT=0, P=0, S={7:0}, X=0] [L24] float x; [L25] x = __VERIFIER_nondet_float() [L26] CALL assume_abort_if_not(x >= -10.f && x <= 10.f) [L12] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, E={6:0}, INIT=0, P=0, S={7:0}, X=0] [L26] RET assume_abort_if_not(x >= -10.f && x <= 10.f) [L27] return x; VAL [\result=57, E={6:0}, INIT=0, P=0, S={7:0}, x=57, X=0] [L52] RET, EXPR RANDOM_INPUT() VAL [E={6:0}, INIT=0, P=0, RANDOM_INPUT()=57, S={7:0}, X=0] [L52] X = RANDOM_INPUT() [L53] INIT = TRUE VAL [E={6:0}, INIT=1, P=0, S={7:0}, X=57] [L54] COND TRUE \read(TRUE) VAL [E={6:0}, INIT=1, P=0, S={7:0}, X=57] [L55] CALL, EXPR RANDOM_INPUT() VAL [E={6:0}, INIT=1, P=0, S={7:0}, X=57] [L24] float x; [L25] x = __VERIFIER_nondet_float() [L26] CALL assume_abort_if_not(x >= -10.f && x <= 10.f) [L12] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, E={6:0}, INIT=1, P=0, S={7:0}, X=57] [L26] RET assume_abort_if_not(x >= -10.f && x <= 10.f) [L27] return x; VAL [\result=52, E={6:0}, INIT=1, P=0, S={7:0}, x=52, X=57] [L55] RET, EXPR RANDOM_INPUT() VAL [E={6:0}, INIT=1, P=0, RANDOM_INPUT()=52, S={7:0}, X=57] [L55] X = RANDOM_INPUT() [L56] CALL filter2 () [L33] COND TRUE \read(INIT) [L34] S[0] = X [L35] P = X [L36] E[0] = X VAL [E={6:0}, INIT=1, P=52, S={7:0}, X=52] [L46] EXPR E[0] [L46] E[1] = E[0] [L46] E[0] = X [L47] EXPR S[0] [L47] S[1] = S[0] [L47] S[0] = P VAL [E={6:0}, INIT=1, P=52, S={7:0}, X=52] [L56] RET filter2 () [L57] INIT = FALSE VAL [E={6:0}, INIT=0, P=52, S={7:0}, X=52] [L54] COND TRUE \read(TRUE) VAL [E={6:0}, INIT=0, P=52, S={7:0}, X=52] [L55] CALL, EXPR RANDOM_INPUT() VAL [E={6:0}, INIT=0, P=52, S={7:0}, X=52] [L24] float x; [L25] x = __VERIFIER_nondet_float() [L26] CALL assume_abort_if_not(x >= -10.f && x <= 10.f) [L12] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, E={6:0}, INIT=0, P=52, S={7:0}, X=52] [L26] RET assume_abort_if_not(x >= -10.f && x <= 10.f) [L27] return x; VAL [\result=49, E={6:0}, INIT=0, P=52, S={7:0}, X=52, x=49] [L55] RET, EXPR RANDOM_INPUT() VAL [E={6:0}, INIT=0, P=52, RANDOM_INPUT()=49, S={7:0}, X=52] [L55] X = RANDOM_INPUT() [L56] CALL filter2 () [L33] COND FALSE !(\read(INIT)) [L39] EXPR E[0] [L40] EXPR E[1] [L41] EXPR S[0] [L42] EXPR S[1] [L38-L42] P = (((((0.4677826f * X) - (E[0] * 0.7700725f)) + (E[1] * 0.4344376f)) + (S[0] * 1.5419f)) - (S[1] * 0.6740477f)) [L43] CALL __VERIFIER_assert(P >= -15.f && P <= 15.f) [L14] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, E={6:0}, INIT=0, S={7:0}, X=49] [L14] reach_error() VAL [\old(cond)=0, cond=0, E={6:0}, INIT=0, S={7:0}, X=49] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7 SdHoareTripleChecker+Valid, 17.24ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7 mSDsluCounter, 62 SdHoareTripleChecker+Invalid, 15.26ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5 IncrementalHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 46 mSDtfsCounter, 5 mSolverCounterSat, 3.05ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=2, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 71 NumberOfCodeBlocks, 71 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 46 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 10/10 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-13 18:41:30,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6660a10-1521-4550-9164-41047d5b7d3d/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6660a10-1521-4550-9164-41047d5b7d3d/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6660a10-1521-4550-9164-41047d5b7d3d/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6660a10-1521-4550-9164-41047d5b7d3d/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6660a10-1521-4550-9164-41047d5b7d3d/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/filter2_alt.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6660a10-1521-4550-9164-41047d5b7d3d/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6660a10-1521-4550-9164-41047d5b7d3d/bin/uautomizer-YU5uOKAj3y --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5bc48f0b37b49094aa2ed7125525fbb7b9a95c5af6fff8426a24c4fcf99bb295 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:41:32,887 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:41:32,889 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:41:32,922 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:41:32,922 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:41:32,924 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:41:32,925 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:41:32,928 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:41:32,930 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:41:32,931 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:41:32,932 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:41:32,933 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:41:32,934 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:41:32,935 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:41:32,936 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:41:32,938 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:41:32,939 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:41:32,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:41:32,956 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:41:32,959 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:41:32,961 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:41:32,962 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:41:32,963 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:41:32,964 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:41:32,968 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:41:32,968 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:41:32,969 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:41:32,970 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:41:32,970 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:41:32,972 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:41:32,972 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:41:32,973 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:41:32,974 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:41:32,975 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:41:32,976 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:41:32,976 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:41:32,977 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:41:32,978 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:41:32,978 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:41:32,979 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:41:32,980 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:41:32,981 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6660a10-1521-4550-9164-41047d5b7d3d/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-13 18:41:33,007 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:41:33,008 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:41:33,008 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:41:33,008 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:41:33,009 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:41:33,009 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:41:33,010 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:41:33,010 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:41:33,011 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:41:33,011 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:41:33,011 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:41:33,011 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:41:33,012 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:41:33,012 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:41:33,012 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:41:33,013 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:41:33,013 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 18:41:33,013 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 18:41:33,013 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:41:33,014 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:41:33,014 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:41:33,014 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:41:33,015 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:41:33,015 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:41:33,015 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:41:33,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:41:33,016 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:41:33,016 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:41:33,016 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:41:33,017 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-13 18:41:33,017 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 18:41:33,017 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:41:33,018 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:41:33,018 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:41:33,018 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:41:33,018 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 18:41:33,019 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6660a10-1521-4550-9164-41047d5b7d3d/bin/uautomizer-YU5uOKAj3y/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6660a10-1521-4550-9164-41047d5b7d3d/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bc48f0b37b49094aa2ed7125525fbb7b9a95c5af6fff8426a24c4fcf99bb295 [2021-11-13 18:41:33,405 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:41:33,424 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:41:33,427 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:41:33,428 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:41:33,429 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:41:33,430 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6660a10-1521-4550-9164-41047d5b7d3d/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/float-benchs/filter2_alt.c [2021-11-13 18:41:33,489 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6660a10-1521-4550-9164-41047d5b7d3d/bin/uautomizer-YU5uOKAj3y/data/fd9efb13a/420fa3c206714bc5aae4df93e1fd773f/FLAGb8ae7cf6f [2021-11-13 18:41:33,986 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:41:33,987 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6660a10-1521-4550-9164-41047d5b7d3d/sv-benchmarks/c/float-benchs/filter2_alt.c [2021-11-13 18:41:33,993 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6660a10-1521-4550-9164-41047d5b7d3d/bin/uautomizer-YU5uOKAj3y/data/fd9efb13a/420fa3c206714bc5aae4df93e1fd773f/FLAGb8ae7cf6f [2021-11-13 18:41:34,361 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6660a10-1521-4550-9164-41047d5b7d3d/bin/uautomizer-YU5uOKAj3y/data/fd9efb13a/420fa3c206714bc5aae4df93e1fd773f [2021-11-13 18:41:34,366 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:41:34,369 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:41:34,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:41:34,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:41:34,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:41:34,374 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:41:34" (1/1) ... [2021-11-13 18:41:34,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19a638fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:41:34, skipping insertion in model container [2021-11-13 18:41:34,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:41:34" (1/1) ... [2021-11-13 18:41:34,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:41:34,401 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:41:34,588 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6660a10-1521-4550-9164-41047d5b7d3d/sv-benchmarks/c/float-benchs/filter2_alt.c[631,644] [2021-11-13 18:41:34,618 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:41:34,663 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:41:34,674 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6660a10-1521-4550-9164-41047d5b7d3d/sv-benchmarks/c/float-benchs/filter2_alt.c[631,644] [2021-11-13 18:41:34,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:41:34,713 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:41:34,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:41:34 WrapperNode [2021-11-13 18:41:34,714 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:41:34,715 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:41:34,715 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:41:34,715 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:41:34,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:41:34" (1/1) ... [2021-11-13 18:41:34,734 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:41:34" (1/1) ... [2021-11-13 18:41:34,757 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:41:34,758 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:41:34,758 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:41:34,758 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:41:34,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:41:34" (1/1) ... [2021-11-13 18:41:34,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:41:34" (1/1) ... [2021-11-13 18:41:34,777 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:41:34" (1/1) ... [2021-11-13 18:41:34,778 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:41:34" (1/1) ... [2021-11-13 18:41:34,804 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:41:34" (1/1) ... [2021-11-13 18:41:34,817 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:41:34" (1/1) ... [2021-11-13 18:41:34,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:41:34" (1/1) ... [2021-11-13 18:41:34,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:41:34,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:41:34,834 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:41:34,834 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:41:34,835 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:41:34" (1/1) ... [2021-11-13 18:41:34,848 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:41:34,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6660a10-1521-4550-9164-41047d5b7d3d/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:41:34,876 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6660a10-1521-4550-9164-41047d5b7d3d/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:41:34,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6660a10-1521-4550-9164-41047d5b7d3d/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:41:34,923 INFO L130 BoogieDeclarations]: Found specification of procedure RANDOM_INPUT [2021-11-13 18:41:34,923 INFO L138 BoogieDeclarations]: Found implementation of procedure RANDOM_INPUT [2021-11-13 18:41:34,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2021-11-13 18:41:34,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 18:41:34,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:41:34,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-11-13 18:41:34,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:41:34,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:41:34,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-11-13 18:41:37,312 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:41:37,313 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-13 18:41:37,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:41:37 BoogieIcfgContainer [2021-11-13 18:41:37,314 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:41:37,316 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:41:37,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:41:37,319 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:41:37,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:41:34" (1/3) ... [2021-11-13 18:41:37,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@293ba006 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:41:37, skipping insertion in model container [2021-11-13 18:41:37,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:41:34" (2/3) ... [2021-11-13 18:41:37,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@293ba006 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:41:37, skipping insertion in model container [2021-11-13 18:41:37,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:41:37" (3/3) ... [2021-11-13 18:41:37,323 INFO L111 eAbstractionObserver]: Analyzing ICFG filter2_alt.c [2021-11-13 18:41:37,334 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:41:37,334 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 18:41:37,398 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:41:37,404 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 18:41:37,405 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 18:41:37,418 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 18:41:37,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-13 18:41:37,422 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:41:37,423 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:41:37,423 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:41:37,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:41:37,428 INFO L85 PathProgramCache]: Analyzing trace with hash -254494899, now seen corresponding path program 1 times [2021-11-13 18:41:37,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:41:37,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1038783520] [2021-11-13 18:41:37,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:41:37,448 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:41:37,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6660a10-1521-4550-9164-41047d5b7d3d/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:41:37,462 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6660a10-1521-4550-9164-41047d5b7d3d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:41:37,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6660a10-1521-4550-9164-41047d5b7d3d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 18:41:37,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:41:37,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-13 18:41:37,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:41:38,028 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-13 18:41:38,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:41:38,121 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 18:41:38,122 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:41:38,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1038783520] [2021-11-13 18:41:38,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1038783520] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 18:41:38,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:41:38,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-13 18:41:38,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40626260] [2021-11-13 18:41:38,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:41:38,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 18:41:38,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:41:38,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 18:41:38,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 18:41:38,160 INFO L87 Difference]: Start difference. First operand has 23 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 18:41:38,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:41:38,178 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2021-11-13 18:41:38,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 18:41:38,181 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2021-11-13 18:41:38,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:41:38,187 INFO L225 Difference]: With dead ends: 39 [2021-11-13 18:41:38,187 INFO L226 Difference]: Without dead ends: 19 [2021-11-13 18:41:38,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 18:41:38,196 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.13ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 18:41:38,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 1.13ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 18:41:38,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-13 18:41:38,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-11-13 18:41:38,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 18:41:38,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-11-13 18:41:38,236 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 20 [2021-11-13 18:41:38,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:41:38,238 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-11-13 18:41:38,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 18:41:38,238 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-11-13 18:41:38,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-13 18:41:38,241 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:41:38,241 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:41:38,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6660a10-1521-4550-9164-41047d5b7d3d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 18:41:38,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6660a10-1521-4550-9164-41047d5b7d3d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:41:38,463 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:41:38,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:41:38,464 INFO L85 PathProgramCache]: Analyzing trace with hash -2084909879, now seen corresponding path program 1 times [2021-11-13 18:41:38,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:41:38,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1737452828] [2021-11-13 18:41:38,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:41:38,465 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:41:38,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6660a10-1521-4550-9164-41047d5b7d3d/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:41:38,467 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6660a10-1521-4550-9164-41047d5b7d3d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:41:38,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6660a10-1521-4550-9164-41047d5b7d3d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 18:41:38,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:41:38,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:41:38,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:41:39,132 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:41:39,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:41:39,253 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-13 18:41:39,253 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:41:39,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1737452828] [2021-11-13 18:41:39,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1737452828] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:41:39,255 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:41:39,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 18:41:39,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42265150] [2021-11-13 18:41:39,260 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:41:39,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:41:39,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:41:39,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:41:39,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:41:39,265 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-13 18:41:41,430 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:41:43,437 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:41:43,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:41:43,439 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2021-11-13 18:41:43,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:41:43,478 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 20 [2021-11-13 18:41:43,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:41:43,479 INFO L225 Difference]: With dead ends: 47 [2021-11-13 18:41:43,480 INFO L226 Difference]: Without dead ends: 32 [2021-11-13 18:41:43,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:41:43,482 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 7 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4143.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.23ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4154.73ms IncrementalHoareTripleChecker+Time [2021-11-13 18:41:43,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 57 Invalid, 10 Unknown, 0 Unchecked, 2.23ms Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 2 Unknown, 0 Unchecked, 4154.73ms Time] [2021-11-13 18:41:43,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-11-13 18:41:43,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2021-11-13 18:41:43,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-13 18:41:43,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2021-11-13 18:41:43,491 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 20 [2021-11-13 18:41:43,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:41:43,492 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2021-11-13 18:41:43,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-13 18:41:43,492 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2021-11-13 18:41:43,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-13 18:41:43,493 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:41:43,493 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:41:43,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6660a10-1521-4550-9164-41047d5b7d3d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 18:41:43,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6660a10-1521-4550-9164-41047d5b7d3d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:41:43,694 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:41:43,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:41:43,695 INFO L85 PathProgramCache]: Analyzing trace with hash 371954385, now seen corresponding path program 1 times [2021-11-13 18:41:43,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:41:43,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [696132171] [2021-11-13 18:41:43,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:41:43,697 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:41:43,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6660a10-1521-4550-9164-41047d5b7d3d/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:41:43,698 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6660a10-1521-4550-9164-41047d5b7d3d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:41:43,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6660a10-1521-4550-9164-41047d5b7d3d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 18:41:47,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:41:47,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-13 18:41:47,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:41:47,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 107 [2021-11-13 18:41:48,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 33 [2021-11-13 18:41:49,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:41:49,298 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-11-13 18:41:49,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 189 treesize of output 131 [2021-11-13 18:41:54,227 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-13 18:41:54,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 740 treesize of output 392