./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3 --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 b31bca48eb92619ef21bf7c6230aa1fe8fb46a8a ..................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3 --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 b31bca48eb92619ef21bf7c6230aa1fe8fb46a8a .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 19:30:24,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:30:24,942 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:30:25,000 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:30:25,001 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:30:25,003 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:30:25,005 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:30:25,009 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:30:25,012 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:30:25,013 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:30:25,015 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:30:25,017 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:30:25,018 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:30:25,020 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:30:25,022 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:30:25,025 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:30:25,026 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:30:25,028 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:30:25,031 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:30:25,036 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:30:25,041 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:30:25,049 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:30:25,051 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:30:25,052 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:30:25,057 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:30:25,057 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:30:25,058 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:30:25,059 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:30:25,060 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:30:25,062 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:30:25,071 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:30:25,072 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:30:25,075 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:30:25,077 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:30:25,079 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:30:25,080 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:30:25,081 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:30:25,081 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:30:25,081 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:30:25,083 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:30:25,084 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:30:25,085 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 19:30:25,137 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:30:25,142 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:30:25,143 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:30:25,143 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:30:25,152 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:30:25,152 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:30:25,153 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:30:25,153 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:30:25,153 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:30:25,154 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:30:25,155 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:30:25,155 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:30:25,156 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:30:25,156 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:30:25,156 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:30:25,156 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:30:25,156 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:30:25,157 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:30:25,157 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:30:25,157 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:30:25,157 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:30:25,158 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:30:25,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:30:25,162 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:30:25,163 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:30:25,163 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:30:25,163 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 19:30:25,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 19:30:25,163 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:30:25,164 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:30:25,164 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:30:25,164 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:30:25,164 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_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b31bca48eb92619ef21bf7c6230aa1fe8fb46a8a [2021-10-15 19:30:25,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:30:25,508 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:30:25,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:30:25,514 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:30:25,515 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:30:25,516 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound20.c [2021-10-15 19:30:25,593 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/data/aa7b489d0/9e021956232a4dda8b9fb3d65aabd9c4/FLAG4754e4568 [2021-10-15 19:30:26,256 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:30:26,257 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound20.c [2021-10-15 19:30:26,268 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/data/aa7b489d0/9e021956232a4dda8b9fb3d65aabd9c4/FLAG4754e4568 [2021-10-15 19:30:26,608 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/data/aa7b489d0/9e021956232a4dda8b9fb3d65aabd9c4 [2021-10-15 19:30:26,615 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:30:26,616 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:30:26,618 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:30:26,618 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:30:26,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:30:26,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:30:26" (1/1) ... [2021-10-15 19:30:26,625 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dd0327f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:30:26, skipping insertion in model container [2021-10-15 19:30:26,626 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:30:26" (1/1) ... [2021-10-15 19:30:26,635 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:30:26,654 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:30:26,870 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_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound20.c[709,722] [2021-10-15 19:30:26,931 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:30:26,942 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:30:26,961 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_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound20.c[709,722] [2021-10-15 19:30:26,995 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:30:27,017 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:30:27,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:30:27 WrapperNode [2021-10-15 19:30:27,018 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:30:27,019 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:30:27,020 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:30:27,020 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:30:27,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:30:27" (1/1) ... [2021-10-15 19:30:27,039 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:30:27" (1/1) ... [2021-10-15 19:30:27,065 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:30:27,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:30:27,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:30:27,067 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:30:27,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:30:27" (1/1) ... [2021-10-15 19:30:27,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:30:27" (1/1) ... [2021-10-15 19:30:27,079 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:30:27" (1/1) ... [2021-10-15 19:30:27,080 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:30:27" (1/1) ... [2021-10-15 19:30:27,087 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:30:27" (1/1) ... [2021-10-15 19:30:27,092 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:30:27" (1/1) ... [2021-10-15 19:30:27,094 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:30:27" (1/1) ... [2021-10-15 19:30:27,097 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:30:27,098 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:30:27,098 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:30:27,098 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:30:27,100 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:30:27" (1/1) ... [2021-10-15 19:30:27,114 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:30:27,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:30:27,152 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:30:27,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:30:27,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 19:30:27,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:30:27,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:30:27,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:30:27,589 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:30:27,589 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-10-15 19:30:27,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:30:27 BoogieIcfgContainer [2021-10-15 19:30:27,592 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:30:27,608 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:30:27,608 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:30:27,612 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:30:27,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:30:26" (1/3) ... [2021-10-15 19:30:27,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22a94691 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:30:27, skipping insertion in model container [2021-10-15 19:30:27,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:30:27" (2/3) ... [2021-10-15 19:30:27,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22a94691 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:30:27, skipping insertion in model container [2021-10-15 19:30:27,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:30:27" (3/3) ... [2021-10-15 19:30:27,616 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_unwindbound20.c [2021-10-15 19:30:27,622 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:30:27,638 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-15 19:30:27,708 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:30:27,717 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, mConcurrency=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 [2021-10-15 19:30:27,717 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-15 19:30:27,733 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 32 places, 40 transitions, 80 flow [2021-10-15 19:30:27,762 INFO L129 PetriNetUnfolder]: 9/40 cut-off events. [2021-10-15 19:30:27,762 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:30:27,764 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 40 events. 9/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 82 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-10-15 19:30:27,764 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 40 transitions, 80 flow [2021-10-15 19:30:27,770 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 35 transitions, 70 flow [2021-10-15 19:30:27,773 INFO L129 PetriNetUnfolder]: 3/13 cut-off events. [2021-10-15 19:30:27,774 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:30:27,774 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:30:27,778 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-15 19:30:27,779 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-15 19:30:27,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:30:27,788 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-10-15 19:30:27,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:30:27,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996141127] [2021-10-15 19:30:27,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:30:27,809 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:30:27,948 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-15 19:30:27,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [698629977] [2021-10-15 19:30:27,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:30:27,949 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:30:27,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:30:27,952 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:30:27,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-15 19:30:28,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:30:28,041 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:30:28,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:30:28,098 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:30:28,104 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-15 19:30:28,105 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:30:28,108 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:30:28,109 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:30:28,109 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:30:28,110 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:30:28,111 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:30:28,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-15 19:30:28,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-15 19:30:28,328 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:30:28,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:30:28 BoogieIcfgContainer [2021-10-15 19:30:28,368 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:30:28,371 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:30:28,372 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:30:28,372 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:30:28,373 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:30:27" (3/4) ... [2021-10-15 19:30:28,376 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-15 19:30:28,377 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:30:28,381 INFO L168 Benchmark]: Toolchain (without parser) took 1761.58 ms. Allocated memory is still 100.7 MB. Free memory was 60.9 MB in the beginning and 44.0 MB in the end (delta: 16.9 MB). Peak memory consumption was 14.5 MB. Max. memory is 16.1 GB. [2021-10-15 19:30:28,382 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 100.7 MB. Free memory is still 77.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:30:28,383 INFO L168 Benchmark]: CACSL2BoogieTranslator took 400.43 ms. Allocated memory is still 100.7 MB. Free memory was 60.7 MB in the beginning and 75.0 MB in the end (delta: -14.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-15 19:30:28,385 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.71 ms. Allocated memory is still 100.7 MB. Free memory was 75.0 MB in the beginning and 73.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:30:28,387 INFO L168 Benchmark]: Boogie Preprocessor took 31.04 ms. Allocated memory is still 100.7 MB. Free memory was 73.3 MB in the beginning and 72.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:30:28,394 INFO L168 Benchmark]: RCFGBuilder took 494.22 ms. Allocated memory is still 100.7 MB. Free memory was 72.1 MB in the beginning and 62.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-15 19:30:28,396 INFO L168 Benchmark]: TraceAbstraction took 760.72 ms. Allocated memory is still 100.7 MB. Free memory was 61.6 MB in the beginning and 44.5 MB in the end (delta: 17.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-15 19:30:28,396 INFO L168 Benchmark]: Witness Printer took 5.64 ms. Allocated memory is still 100.7 MB. Free memory was 44.5 MB in the beginning and 44.4 MB in the end (delta: 2.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:30:28,407 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 100.7 MB. Free memory is still 77.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 400.43 ms. Allocated memory is still 100.7 MB. Free memory was 60.7 MB in the beginning and 75.0 MB in the end (delta: -14.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.71 ms. Allocated memory is still 100.7 MB. Free memory was 75.0 MB in the beginning and 73.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.04 ms. Allocated memory is still 100.7 MB. Free memory was 73.3 MB in the beginning and 72.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 494.22 ms. Allocated memory is still 100.7 MB. Free memory was 72.1 MB in the beginning and 62.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 760.72 ms. Allocated memory is still 100.7 MB. Free memory was 61.6 MB in the beginning and 44.5 MB in the end (delta: 17.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Witness Printer took 5.64 ms. Allocated memory is still 100.7 MB. Free memory was 44.5 MB in the beginning and 44.4 MB in the end (delta: 2.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 34. Possible FailurePath: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x, s; [L28] a = __VERIFIER_nondet_double() [L29] x = a [L30] s = 3.25 [L31] r = 1 VAL [counter=0] [L33] EXPR counter++ VAL [counter=1] [L33] COND TRUE counter++<20 [L17] COND TRUE !(cond) VAL [counter=1] [L19] reach_error() VAL [counter=1] - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 621.3ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 52.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 11.8ms SsaConstructionTime, 26.8ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-15 19:30:28,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-15 19:30:31,422 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:30:31,425 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:30:31,501 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:30:31,502 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:30:31,504 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:30:31,506 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:30:31,510 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:30:31,513 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:30:31,514 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:30:31,516 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:30:31,518 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:30:31,519 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:30:31,520 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:30:31,523 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:30:31,525 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:30:31,526 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:30:31,528 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:30:31,547 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:30:31,550 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:30:31,553 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:30:31,555 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:30:31,557 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:30:31,559 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:30:31,563 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:30:31,564 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:30:31,565 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:30:31,567 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:30:31,568 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:30:31,570 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:30:31,570 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:30:31,572 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:30:31,574 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:30:31,575 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:30:31,577 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:30:31,578 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:30:31,579 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:30:31,579 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:30:31,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:30:31,582 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:30:31,583 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:30:31,584 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-15 19:30:31,618 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:30:31,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:30:31,619 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:30:31,619 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:30:31,621 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:30:31,621 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:30:31,622 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:30:31,622 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:30:31,622 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:30:31,623 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:30:31,623 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:30:31,623 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:30:31,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:30:31,624 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:30:31,624 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-15 19:30:31,625 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-15 19:30:31,625 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:30:31,625 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:30:31,625 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:30:31,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:30:31,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:30:31,627 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:30:31,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:30:31,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:30:31,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:30:31,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:30:31,628 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:30:31,629 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-15 19:30:31,629 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-15 19:30:31,629 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:30:31,629 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:30:31,630 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:30:31,630 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:30:31,631 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-15 19:30:31,631 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_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b31bca48eb92619ef21bf7c6230aa1fe8fb46a8a [2021-10-15 19:30:32,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:30:32,159 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:30:32,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:30:32,164 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:30:32,165 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:30:32,166 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound20.c [2021-10-15 19:30:32,247 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/data/0be3cb168/de58b84ebfce435bba7d512d9e41f1c4/FLAG077023523 [2021-10-15 19:30:32,966 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:30:32,966 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound20.c [2021-10-15 19:30:32,979 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/data/0be3cb168/de58b84ebfce435bba7d512d9e41f1c4/FLAG077023523 [2021-10-15 19:30:33,319 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/data/0be3cb168/de58b84ebfce435bba7d512d9e41f1c4 [2021-10-15 19:30:33,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:30:33,325 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:30:33,329 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:30:33,330 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:30:33,335 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:30:33,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:30:33" (1/1) ... [2021-10-15 19:30:33,337 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@be97c4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:30:33, skipping insertion in model container [2021-10-15 19:30:33,338 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:30:33" (1/1) ... [2021-10-15 19:30:33,347 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:30:33,365 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:30:33,547 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_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound20.c[709,722] [2021-10-15 19:30:33,580 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:30:33,597 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:30:33,613 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_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound20.c[709,722] [2021-10-15 19:30:33,630 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:30:33,649 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:30:33,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:30:33 WrapperNode [2021-10-15 19:30:33,650 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:30:33,652 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:30:33,652 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:30:33,652 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:30:33,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:30:33" (1/1) ... [2021-10-15 19:30:33,676 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:30:33" (1/1) ... [2021-10-15 19:30:33,705 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:30:33,706 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:30:33,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:30:33,707 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:30:33,718 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:30:33" (1/1) ... [2021-10-15 19:30:33,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:30:33" (1/1) ... [2021-10-15 19:30:33,723 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:30:33" (1/1) ... [2021-10-15 19:30:33,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:30:33" (1/1) ... [2021-10-15 19:30:33,733 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:30:33" (1/1) ... [2021-10-15 19:30:33,738 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:30:33" (1/1) ... [2021-10-15 19:30:33,741 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:30:33" (1/1) ... [2021-10-15 19:30:33,745 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:30:33,751 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:30:33,751 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:30:33,751 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:30:33,752 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:30:33" (1/1) ... [2021-10-15 19:30:33,763 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:30:33,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:30:33,827 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:30:33,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:30:33,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-15 19:30:33,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:30:33,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:30:33,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:30:46,703 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:30:46,704 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-10-15 19:30:46,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:30:46 BoogieIcfgContainer [2021-10-15 19:30:46,706 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:30:46,708 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:30:46,709 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:30:46,713 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:30:46,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:30:33" (1/3) ... [2021-10-15 19:30:46,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9186492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:30:46, skipping insertion in model container [2021-10-15 19:30:46,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:30:33" (2/3) ... [2021-10-15 19:30:46,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9186492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:30:46, skipping insertion in model container [2021-10-15 19:30:46,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:30:46" (3/3) ... [2021-10-15 19:30:46,717 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_unwindbound20.c [2021-10-15 19:30:46,724 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:30:46,725 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-15 19:30:46,787 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:30:46,796 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, mConcurrency=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 [2021-10-15 19:30:46,796 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-15 19:30:46,808 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 32 places, 40 transitions, 80 flow [2021-10-15 19:30:46,832 INFO L129 PetriNetUnfolder]: 9/40 cut-off events. [2021-10-15 19:30:46,833 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:30:46,834 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 40 events. 9/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 82 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-10-15 19:30:46,835 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 40 transitions, 80 flow [2021-10-15 19:30:46,840 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 35 transitions, 70 flow [2021-10-15 19:30:46,844 INFO L129 PetriNetUnfolder]: 3/13 cut-off events. [2021-10-15 19:30:46,845 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:30:46,845 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:30:46,846 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-15 19:30:46,846 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-15 19:30:46,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:30:46,853 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-10-15 19:30:46,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:30:46,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [179216376] [2021-10-15 19:30:46,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:30:46,867 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:30:46,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:30:46,873 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:30:46,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-15 19:30:47,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:30:47,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-15 19:30:47,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:30:47,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:30:47,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:30:55,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:30:55,152 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:30:55,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [179216376] [2021-10-15 19:30:55,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [179216376] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:30:55,153 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:30:55,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-15 19:30:55,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543535663] [2021-10-15 19:30:55,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-15 19:30:55,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:30:55,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-15 19:30:55,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-15 19:30:55,187 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2021-10-15 19:30:55,191 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 35 transitions, 70 flow. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:30:55,191 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:30:55,192 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2021-10-15 19:30:55,193 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:31:25,511 INFO L129 PetriNetUnfolder]: 3/37 cut-off events. [2021-10-15 19:31:25,511 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:31:25,512 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 37 events. 3/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 70 event pairs, 0 based on Foata normal form. 7/38 useless extension candidates. Maximal degree in co-relation 2. Up to 15 conditions per place. [2021-10-15 19:31:25,514 INFO L132 encePairwiseOnDemand]: 19/40 looper letters, 10 selfloop transitions, 17 changer transitions 0/35 dead transitions. [2021-10-15 19:31:25,514 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 35 transitions, 124 flow [2021-10-15 19:31:25,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 19:31:25,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 19:31:25,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 102 transitions. [2021-10-15 19:31:25,547 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.425 [2021-10-15 19:31:25,548 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 102 transitions. [2021-10-15 19:31:25,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 102 transitions. [2021-10-15 19:31:25,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:31:25,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 102 transitions. [2021-10-15 19:31:25,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:31:25,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 40.0) internal successors, (280), 7 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:31:25,563 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 40.0) internal successors, (280), 7 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:31:25,565 INFO L186 Difference]: Start difference. First operand has 28 places, 35 transitions, 70 flow. Second operand 6 states and 102 transitions. [2021-10-15 19:31:25,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 35 transitions, 124 flow [2021-10-15 19:31:25,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 124 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:31:25,573 INFO L242 Difference]: Finished difference. Result has 35 places, 35 transitions, 130 flow [2021-10-15 19:31:25,576 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=130, PETRI_PLACES=35, PETRI_TRANSITIONS=35} [2021-10-15 19:31:25,577 INFO L334 CegarLoopForPetriNet]: 28 programPoint places, 7 predicate places. [2021-10-15 19:31:25,577 INFO L470 AbstractCegarLoop]: Abstraction has has 35 places, 35 transitions, 130 flow [2021-10-15 19:31:25,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:31:25,578 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:31:25,578 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:31:25,593 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-15 19:31:25,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:31:25,780 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-15 19:31:25,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:31:25,781 INFO L82 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2021-10-15 19:31:25,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:31:25,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1724050988] [2021-10-15 19:31:25,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:31:25,784 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:31:25,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:31:25,785 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:31:25,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-15 19:31:27,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:31:27,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-15 19:31:27,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:31:29,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:31:29,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:31:35,996 WARN L838 $PredicateComparison]: unable to prove that (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) is different from false [2021-10-15 19:31:38,040 WARN L860 $PredicateComparison]: unable to prove that (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) is different from true [2021-10-15 19:32:03,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:32:03,399 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:32:03,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1724050988] [2021-10-15 19:32:03,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1724050988] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:32:03,400 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:32:03,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-10-15 19:32:03,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487279759] [2021-10-15 19:32:03,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-15 19:32:03,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:32:03,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-15 19:32:03,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=30, Unknown=2, NotChecked=10, Total=56 [2021-10-15 19:32:03,404 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2021-10-15 19:32:03,405 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 35 transitions, 130 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:32:03,405 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:32:03,405 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2021-10-15 19:32:03,405 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:32:13,580 WARN L207 SmtUtils]: Spent 6.08 s on a formula simplification that was a NOOP. DAG size: 14 [2021-10-15 19:32:20,104 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~r~0 (_ bv1 32)) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) (= c_currentRoundingMode roundNearestTiesToEven) (forall ((v_ULTIMATE.start_main_~a~0_11 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (let ((.cse1 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)) v_ULTIMATE.start_main_~a~0_11))) (fp.sub c_currentRoundingMode .cse1 .cse1))) (_ bv0 32)))) is different from true [2021-10-15 19:32:22,764 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~r~0 (_ bv1 32)) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-15 19:33:10,590 INFO L129 PetriNetUnfolder]: 3/38 cut-off events. [2021-10-15 19:33:10,590 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2021-10-15 19:33:10,591 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 38 events. 3/38 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 61 event pairs, 0 based on Foata normal form. 1/38 useless extension candidates. Maximal degree in co-relation 47. Up to 13 conditions per place. [2021-10-15 19:33:10,592 INFO L132 encePairwiseOnDemand]: 26/40 looper letters, 10 selfloop transitions, 18 changer transitions 0/36 dead transitions. [2021-10-15 19:33:10,592 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 36 transitions, 191 flow [2021-10-15 19:33:10,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-15 19:33:10,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-15 19:33:10,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 117 transitions. [2021-10-15 19:33:10,595 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.365625 [2021-10-15 19:33:10,595 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 117 transitions. [2021-10-15 19:33:10,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 117 transitions. [2021-10-15 19:33:10,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:33:10,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 117 transitions. [2021-10-15 19:33:10,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:33:10,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 40.0) internal successors, (360), 9 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:33:10,601 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 40.0) internal successors, (360), 9 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:33:10,601 INFO L186 Difference]: Start difference. First operand has 35 places, 35 transitions, 130 flow. Second operand 8 states and 117 transitions. [2021-10-15 19:33:10,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 36 transitions, 191 flow [2021-10-15 19:33:10,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 36 transitions, 189 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 19:33:10,607 INFO L242 Difference]: Finished difference. Result has 43 places, 36 transitions, 197 flow [2021-10-15 19:33:10,608 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=197, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2021-10-15 19:33:10,609 INFO L334 CegarLoopForPetriNet]: 28 programPoint places, 15 predicate places. [2021-10-15 19:33:10,609 INFO L470 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 197 flow [2021-10-15 19:33:10,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:33:10,610 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:33:10,610 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:33:10,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-15 19:33:10,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:33:10,831 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-15 19:33:10,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:33:10,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1248817364, now seen corresponding path program 1 times [2021-10-15 19:33:10,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:33:10,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [560775421] [2021-10-15 19:33:10,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:33:10,832 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:33:10,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:33:10,842 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:33:10,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-15 19:33:11,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:33:11,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-15 19:33:11,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:33:11,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:33:11,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:33:11,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:33:11,739 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:33:11,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [560775421] [2021-10-15 19:33:11,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [560775421] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:33:11,740 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:33:11,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-15 19:33:11,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994030963] [2021-10-15 19:33:11,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 19:33:11,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:33:11,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:33:11,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:33:11,744 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 40 [2021-10-15 19:33:11,745 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 197 flow. Second operand has 6 states, 6 states have (on average 29.333333333333332) internal successors, (176), 6 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:33:11,745 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:33:11,745 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 40 [2021-10-15 19:33:11,745 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:33:13,419 INFO L129 PetriNetUnfolder]: 2/53 cut-off events. [2021-10-15 19:33:13,420 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2021-10-15 19:33:13,420 INFO L84 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 53 events. 2/53 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 81 event pairs, 0 based on Foata normal form. 2/53 useless extension candidates. Maximal degree in co-relation 115. Up to 13 conditions per place. [2021-10-15 19:33:13,421 INFO L132 encePairwiseOnDemand]: 36/40 looper letters, 4 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2021-10-15 19:33:13,421 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 36 transitions, 206 flow [2021-10-15 19:33:13,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 19:33:13,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 19:33:13,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 179 transitions. [2021-10-15 19:33:13,424 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7458333333333333 [2021-10-15 19:33:13,424 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 179 transitions. [2021-10-15 19:33:13,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 179 transitions. [2021-10-15 19:33:13,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:33:13,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 179 transitions. [2021-10-15 19:33:13,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:33:13,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 40.0) internal successors, (280), 7 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:33:13,429 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 40.0) internal successors, (280), 7 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:33:13,429 INFO L186 Difference]: Start difference. First operand has 43 places, 36 transitions, 197 flow. Second operand 6 states and 179 transitions. [2021-10-15 19:33:13,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 36 transitions, 206 flow [2021-10-15 19:33:13,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 36 transitions, 169 flow, removed 1 selfloop flow, removed 6 redundant places. [2021-10-15 19:33:13,436 INFO L242 Difference]: Finished difference. Result has 43 places, 36 transitions, 173 flow [2021-10-15 19:33:13,436 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=173, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2021-10-15 19:33:13,437 INFO L334 CegarLoopForPetriNet]: 28 programPoint places, 15 predicate places. [2021-10-15 19:33:13,437 INFO L470 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 173 flow [2021-10-15 19:33:13,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.333333333333332) internal successors, (176), 6 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:33:13,438 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:33:13,438 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:33:13,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-15 19:33:13,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:33:13,661 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-15 19:33:13,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:33:13,661 INFO L82 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2021-10-15 19:33:13,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:33:13,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1015647712] [2021-10-15 19:33:13,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:33:13,662 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:33:13,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:33:13,663 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:33:13,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-15 19:33:15,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:33:15,459 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:33:17,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:33:17,223 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-15 19:33:17,223 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-15 19:33:17,224 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:33:17,227 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:33:17,227 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:33:17,227 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:33:17,228 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:33:17,228 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:33:17,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-15 19:33:17,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:33:17,437 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:33:17,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:33:17 BoogieIcfgContainer [2021-10-15 19:33:17,501 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:33:17,502 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:33:17,503 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:33:17,503 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:33:17,504 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:30:46" (3/4) ... [2021-10-15 19:33:17,516 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-15 19:33:17,597 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 19:33:17,600 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:33:17,602 INFO L168 Benchmark]: Toolchain (without parser) took 164276.17 ms. Allocated memory was 50.3 MB in the beginning and 73.4 MB in the end (delta: 23.1 MB). Free memory was 26.4 MB in the beginning and 52.2 MB in the end (delta: -25.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:33:17,603 INFO L168 Benchmark]: CDTParser took 0.51 ms. Allocated memory is still 50.3 MB. Free memory was 30.4 MB in the beginning and 30.3 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:33:17,604 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.53 ms. Allocated memory is still 50.3 MB. Free memory was 26.2 MB in the beginning and 26.4 MB in the end (delta: -232.3 kB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. [2021-10-15 19:33:17,605 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.68 ms. Allocated memory is still 50.3 MB. Free memory was 26.4 MB in the beginning and 24.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:33:17,607 INFO L168 Benchmark]: Boogie Preprocessor took 43.74 ms. Allocated memory is still 50.3 MB. Free memory was 24.7 MB in the beginning and 23.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:33:17,610 INFO L168 Benchmark]: RCFGBuilder took 12955.21 ms. Allocated memory was 50.3 MB in the beginning and 73.4 MB in the end (delta: 23.1 MB). Free memory was 23.1 MB in the beginning and 46.4 MB in the end (delta: -23.3 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. [2021-10-15 19:33:17,613 INFO L168 Benchmark]: TraceAbstraction took 150793.07 ms. Allocated memory is still 73.4 MB. Free memory was 46.0 MB in the beginning and 53.9 MB in the end (delta: -7.8 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. [2021-10-15 19:33:17,619 INFO L168 Benchmark]: Witness Printer took 97.88 ms. Allocated memory is still 73.4 MB. Free memory was 53.9 MB in the beginning and 52.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:33:17,622 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51 ms. Allocated memory is still 50.3 MB. Free memory was 30.4 MB in the beginning and 30.3 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 321.53 ms. Allocated memory is still 50.3 MB. Free memory was 26.2 MB in the beginning and 26.4 MB in the end (delta: -232.3 kB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.68 ms. Allocated memory is still 50.3 MB. Free memory was 26.4 MB in the beginning and 24.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.74 ms. Allocated memory is still 50.3 MB. Free memory was 24.7 MB in the beginning and 23.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 12955.21 ms. Allocated memory was 50.3 MB in the beginning and 73.4 MB in the end (delta: 23.1 MB). Free memory was 23.1 MB in the beginning and 46.4 MB in the end (delta: -23.3 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 150793.07 ms. Allocated memory is still 73.4 MB. Free memory was 46.0 MB in the beginning and 53.9 MB in the end (delta: -7.8 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. * Witness Printer took 97.88 ms. Allocated memory is still 73.4 MB. Free memory was 53.9 MB in the beginning and 52.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x, s; [L28] a = __VERIFIER_nondet_double() [L29] x = a [L30] s = 3.25 [L31] r = 1 VAL [counter=0] [L33] EXPR counter++ VAL [counter=1] [L33] COND TRUE counter++<20 [L17] COND FALSE !(!(cond)) VAL [counter=1] [L17] COND FALSE !(!(cond)) VAL [counter=1] [L17] COND TRUE !(cond) VAL [counter=1] [L19] reach_error() VAL [counter=1] - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 150652.7ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 99297.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 44.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 31 SDtfs, 36 SDslu, 34 SDs, 0 SdLazy, 110 SolverSat, 20 SolverUnsat, 28 SolverUnknown, 0 SolverNotchecked, 78957.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 39745.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=197occurred in iteration=2, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 47.4ms SsaConstructionTime, 3942.1ms SatisfiabilityAnalysisTime, 44446.3ms InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 40 ConstructedInterpolants, 1 QuantifiedInterpolants, 310 SizeOfPredicates, 10 NumberOfNonLiveVariables, 108 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-15 19:33:17,854 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-10-15 19:33:17,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c4a2dc8-3e7f-49a2-acea-9a790f31d5c0/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request...