./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg --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 3387469fc11c16d7f8ab51cbf8a20f0f1310ee033d6c034e3a7582b30964acec ....................................................................................................................................................................................................................................................... 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_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg --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 3387469fc11c16d7f8ab51cbf8a20f0f1310ee033d6c034e3a7582b30964acec ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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-b2eff8b [2021-10-28 09:04:02,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:04:02,612 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:04:02,680 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:04:02,681 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:04:02,687 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:04:02,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:04:02,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:04:02,698 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:04:02,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:04:02,709 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:04:02,712 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:04:02,713 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:04:02,717 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:04:02,720 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:04:02,728 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:04:02,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:04:02,733 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:04:02,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:04:02,741 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:04:02,743 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:04:02,745 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:04:02,747 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:04:02,748 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:04:02,752 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:04:02,753 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:04:02,753 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:04:02,755 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:04:02,755 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:04:02,757 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:04:02,757 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:04:02,759 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:04:02,760 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:04:02,761 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:04:02,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:04:02,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:04:02,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:04:02,765 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:04:02,766 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:04:02,767 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:04:02,768 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:04:02,769 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:04:02,800 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:04:02,801 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:04:02,801 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:04:02,801 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:04:02,803 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:04:02,803 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:04:02,804 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:04:02,804 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:04:02,804 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:04:02,805 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:04:02,805 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:04:02,805 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:04:02,805 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:04:02,806 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:04:02,806 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:04:02,806 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:04:02,806 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:04:02,807 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:04:02,807 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:04:02,807 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:04:02,808 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:04:02,808 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:04:02,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:04:02,808 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:04:02,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:04:02,809 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:04:02,809 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:04:02,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:04:02,810 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:04:02,810 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:04:02,810 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:04:02,811 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:04:02,811 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_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3387469fc11c16d7f8ab51cbf8a20f0f1310ee033d6c034e3a7582b30964acec [2021-10-28 09:04:03,111 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:04:03,143 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:04:03,148 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:04:03,149 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:04:03,150 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:04:03,152 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c [2021-10-28 09:04:03,231 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/data/b1bac053a/b230088366114d6eb3955c07f341102f/FLAG96b41993a [2021-10-28 09:04:03,777 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:04:03,778 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c [2021-10-28 09:04:03,784 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/data/b1bac053a/b230088366114d6eb3955c07f341102f/FLAG96b41993a [2021-10-28 09:04:04,158 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/data/b1bac053a/b230088366114d6eb3955c07f341102f [2021-10-28 09:04:04,161 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:04:04,163 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:04:04,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:04:04,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:04:04,176 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:04:04,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:04:04" (1/1) ... [2021-10-28 09:04:04,178 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f230e9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:04, skipping insertion in model container [2021-10-28 09:04:04,179 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:04:04" (1/1) ... [2021-10-28 09:04:04,189 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:04:04,208 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:04:04,405 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_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c[712,725] [2021-10-28 09:04:04,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:04:04,452 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:04:04,470 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_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c[712,725] [2021-10-28 09:04:04,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:04:04,504 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:04:04,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:04 WrapperNode [2021-10-28 09:04:04,506 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:04:04,509 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:04:04,509 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:04:04,509 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:04:04,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:04" (1/1) ... [2021-10-28 09:04:04,530 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:04" (1/1) ... [2021-10-28 09:04:04,559 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:04:04,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:04:04,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:04:04,561 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:04:04,570 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:04" (1/1) ... [2021-10-28 09:04:04,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:04" (1/1) ... [2021-10-28 09:04:04,583 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:04" (1/1) ... [2021-10-28 09:04:04,583 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:04" (1/1) ... [2021-10-28 09:04:04,589 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:04" (1/1) ... [2021-10-28 09:04:04,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:04" (1/1) ... [2021-10-28 09:04:04,595 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:04" (1/1) ... [2021-10-28 09:04:04,597 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:04:04,599 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:04:04,599 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:04:04,599 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:04:04,600 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:04" (1/1) ... [2021-10-28 09:04:04,610 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:04:04,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:04:04,637 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:04:04,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:04:04,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:04:04,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:04:04,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:04:04,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:04:04,999 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:04:05,008 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-28 09:04:05,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:04:05 BoogieIcfgContainer [2021-10-28 09:04:05,011 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:04:05,014 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:04:05,015 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:04:05,020 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:04:05,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:04:04" (1/3) ... [2021-10-28 09:04:05,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a4d36ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:04:05, skipping insertion in model container [2021-10-28 09:04:05,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:04" (2/3) ... [2021-10-28 09:04:05,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a4d36ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:04:05, skipping insertion in model container [2021-10-28 09:04:05,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:04:05" (3/3) ... [2021-10-28 09:04:05,024 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound1.c [2021-10-28 09:04:05,035 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:04:05,036 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-28 09:04:05,113 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:04:05,125 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 09:04:05,126 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-28 09:04:05,147 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:05,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 09:04:05,161 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:04:05,161 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 09:04:05,162 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:04:05,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:04:05,171 INFO L85 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-10-28 09:04:05,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:04:05,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561354255] [2021-10-28 09:04:05,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:04:05,212 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:04:05,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:04:05,387 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:04:05,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:04:05,440 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:04:05,443 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 09:04:05,444 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:04:05,447 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:04:05,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:04:05,453 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-10-28 09:04:05,456 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:04:05,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:04:05 BoogieIcfgContainer [2021-10-28 09:04:05,484 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:04:05,485 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:04:05,485 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:04:05,485 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:04:05,486 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:04:05" (3/4) ... [2021-10-28 09:04:05,490 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 09:04:05,490 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:04:05,493 INFO L168 Benchmark]: Toolchain (without parser) took 1328.23 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 64.9 MB in the beginning and 76.8 MB in the end (delta: -11.9 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:04:05,494 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 86.0 MB. Free memory was 62.3 MB in the beginning and 62.2 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:04:05,495 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.70 ms. Allocated memory is still 86.0 MB. Free memory was 64.6 MB in the beginning and 61.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:04:05,496 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.53 ms. Allocated memory is still 86.0 MB. Free memory was 61.4 MB in the beginning and 60.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:04:05,497 INFO L168 Benchmark]: Boogie Preprocessor took 37.67 ms. Allocated memory is still 86.0 MB. Free memory was 60.1 MB in the beginning and 58.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:04:05,498 INFO L168 Benchmark]: RCFGBuilder took 412.98 ms. Allocated memory is still 86.0 MB. Free memory was 58.9 MB in the beginning and 50.0 MB in the end (delta: 9.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:04:05,499 INFO L168 Benchmark]: TraceAbstraction took 470.00 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 49.4 MB in the beginning and 77.2 MB in the end (delta: -27.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:04:05,500 INFO L168 Benchmark]: Witness Printer took 5.89 ms. Allocated memory is still 104.9 MB. Free memory was 77.2 MB in the beginning and 76.8 MB in the end (delta: 435.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:04:05,505 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 86.0 MB. Free memory was 62.3 MB in the beginning and 62.2 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 341.70 ms. Allocated memory is still 86.0 MB. Free memory was 64.6 MB in the beginning and 61.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.53 ms. Allocated memory is still 86.0 MB. Free memory was 61.4 MB in the beginning and 60.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.67 ms. Allocated memory is still 86.0 MB. Free memory was 60.1 MB in the beginning and 58.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 412.98 ms. Allocated memory is still 86.0 MB. Free memory was 58.9 MB in the beginning and 50.0 MB in the end (delta: 9.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 470.00 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 49.4 MB in the beginning and 77.2 MB in the end (delta: -27.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.89 ms. Allocated memory is still 104.9 MB. Free memory was 77.2 MB in the beginning and 76.8 MB in the end (delta: 435.2 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 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 33, overapproximation of someBinaryArithmeticDOUBLEoperation at line 29. Possible FailurePath: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x; [L28] a = __VERIFIER_nondet_double() [L29] x = a / 2.0 [L30] r = 0 VAL [counter=0] [L32] EXPR counter++ VAL [counter=1] [L32] COND TRUE 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. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s 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 [2021-10-28 09:04:05,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/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-b2eff8b [2021-10-28 09:04:08,623 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:04:08,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:04:08,699 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:04:08,699 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:04:08,705 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:04:08,707 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:04:08,716 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:04:08,719 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:04:08,726 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:04:08,727 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:04:08,730 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:04:08,731 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:04:08,735 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:04:08,738 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:04:08,745 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:04:08,748 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:04:08,749 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:04:08,752 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:04:08,763 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:04:08,766 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:04:08,768 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:04:08,771 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:04:08,775 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:04:08,788 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:04:08,790 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:04:08,791 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:04:08,792 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:04:08,794 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:04:08,796 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:04:08,796 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:04:08,798 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:04:08,800 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:04:08,801 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:04:08,803 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:04:08,804 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:04:08,805 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:04:08,806 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:04:08,806 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:04:08,808 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:04:08,809 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:04:08,810 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-28 09:04:08,873 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:04:08,874 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:04:08,875 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:04:08,875 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:04:08,878 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:04:08,878 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:04:08,879 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:04:08,879 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:04:08,879 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:04:08,880 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:04:08,881 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:04:08,881 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:04:08,882 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:04:08,882 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:04:08,883 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 09:04:08,883 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 09:04:08,883 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:04:08,883 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:04:08,884 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:04:08,884 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:04:08,884 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:04:08,885 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:04:08,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:04:08,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:04:08,886 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:04:08,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:04:08,887 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:04:08,887 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 09:04:08,887 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 09:04:08,887 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:04:08,888 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:04:08,888 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:04:08,889 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:04:08,889 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 09:04:08,889 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_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3387469fc11c16d7f8ab51cbf8a20f0f1310ee033d6c034e3a7582b30964acec [2021-10-28 09:04:09,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:04:09,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:04:09,458 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:04:09,460 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:04:09,460 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:04:09,461 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c [2021-10-28 09:04:09,560 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/data/97d3c5306/597002f65a164128a315f9c7a8a9f363/FLAGc0758174c [2021-10-28 09:04:10,262 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:04:10,265 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c [2021-10-28 09:04:10,273 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/data/97d3c5306/597002f65a164128a315f9c7a8a9f363/FLAGc0758174c [2021-10-28 09:04:10,615 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/data/97d3c5306/597002f65a164128a315f9c7a8a9f363 [2021-10-28 09:04:10,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:04:10,620 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:04:10,622 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:04:10,622 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:04:10,627 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:04:10,628 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:04:10" (1/1) ... [2021-10-28 09:04:10,629 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@652dd25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:10, skipping insertion in model container [2021-10-28 09:04:10,629 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:04:10" (1/1) ... [2021-10-28 09:04:10,639 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:04:10,656 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:04:10,830 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_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c[712,725] [2021-10-28 09:04:10,850 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:04:10,872 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:04:10,908 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_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c[712,725] [2021-10-28 09:04:10,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:04:10,974 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:04:10,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:10 WrapperNode [2021-10-28 09:04:10,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:04:10,976 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:04:10,976 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:04:10,977 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:04:10,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:10" (1/1) ... [2021-10-28 09:04:11,000 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:10" (1/1) ... [2021-10-28 09:04:11,023 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:04:11,024 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:04:11,024 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:04:11,024 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:04:11,035 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:10" (1/1) ... [2021-10-28 09:04:11,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:10" (1/1) ... [2021-10-28 09:04:11,039 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:10" (1/1) ... [2021-10-28 09:04:11,039 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:10" (1/1) ... [2021-10-28 09:04:11,048 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:10" (1/1) ... [2021-10-28 09:04:11,053 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:10" (1/1) ... [2021-10-28 09:04:11,055 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:10" (1/1) ... [2021-10-28 09:04:11,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:04:11,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:04:11,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:04:11,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:04:11,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:10" (1/1) ... [2021-10-28 09:04:11,076 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:04:11,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:04:11,111 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:04:11,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:04:11,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 09:04:11,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:04:11,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:04:11,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:04:17,450 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:04:17,450 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-28 09:04:17,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:04:17 BoogieIcfgContainer [2021-10-28 09:04:17,453 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:04:17,455 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:04:17,456 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:04:17,460 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:04:17,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:04:10" (1/3) ... [2021-10-28 09:04:17,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eda246c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:04:17, skipping insertion in model container [2021-10-28 09:04:17,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:10" (2/3) ... [2021-10-28 09:04:17,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eda246c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:04:17, skipping insertion in model container [2021-10-28 09:04:17,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:04:17" (3/3) ... [2021-10-28 09:04:17,464 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound1.c [2021-10-28 09:04:17,471 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:04:17,471 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-28 09:04:17,561 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:04:17,573 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 09:04:17,574 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-28 09:04:17,590 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:04:17,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 09:04:17,596 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:04:17,609 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 09:04:17,610 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:04:17,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:04:17,617 INFO L85 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-10-28 09:04:17,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:04:17,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1324987717] [2021-10-28 09:04:17,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:04:17,633 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:04:17,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:04:17,636 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:04:17,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 09:04:21,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:04:21,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:04:21,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:04:42,914 WARN L838 $PredicateComparison]: unable to prove that (or (and (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 ULTIMATE.start_main_~a~0) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32))) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse1 ULTIMATE.start_main_~a~0) .cse1)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))))) is different from false [2021-10-28 09:04:48,506 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 ULTIMATE.start_main_~a~0) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) is different from false [2021-10-28 09:04:50,543 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 ULTIMATE.start_main_~a~0) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) is different from true [2021-10-28 09:04:50,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:04:50,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:04:56,903 WARN L838 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)) is different from false [2021-10-28 09:04:58,962 WARN L860 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)) is different from true [2021-10-28 09:05:07,628 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~a~0_8 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~a~0_8) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~a~0_8 ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32))) is different from false [2021-10-28 09:05:09,680 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~a~0_8 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~a~0_8) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~a~0_8 ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32))) is different from true [2021-10-28 09:05:09,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:05:09,682 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:05:09,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1324987717] [2021-10-28 09:05:09,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1324987717] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:05:09,683 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:05:09,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-10-28 09:05:09,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038609068] [2021-10-28 09:05:09,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:05:09,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:05:09,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:05:09,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=13, Unknown=7, NotChecked=36, Total=72 [2021-10-28 09:05:09,710 INFO L87 Difference]: Start difference. First operand has 16 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:05:11,864 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~a~0_8 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~a~0_8) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~a~0_8 ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-28 09:05:13,915 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~a~0_8 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~a~0_8) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~a~0_8 ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-28 09:05:15,974 WARN L838 $PredicateComparison]: unable to prove that (and (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)) (= c_ULTIMATE.start_main_~r~0 (_ bv0 32)) (= c_ULTIMATE.start_main_~x~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-28 09:05:18,038 WARN L860 $PredicateComparison]: unable to prove that (and (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)) (= c_ULTIMATE.start_main_~r~0 (_ bv0 32)) (= c_ULTIMATE.start_main_~x~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-28 09:05:20,101 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) (and (not .cse0) (or (and (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse1 ULTIMATE.start_main_~a~0) .cse1)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32))) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (and .cse0 (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse2 ULTIMATE.start_main_~a~0) .cse2)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))))))) is different from false [2021-10-28 09:05:31,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:05:31,070 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2021-10-28 09:05:31,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:05:31,094 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-28 09:05:31,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:05:31,103 INFO L225 Difference]: With dead ends: 37 [2021-10-28 09:05:31,103 INFO L226 Difference]: Without dead ends: 19 [2021-10-28 09:05:31,106 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 28.4s TimeCoverageRelationStatistics Valid=22, Invalid=14, Unknown=12, NotChecked=84, Total=132 [2021-10-28 09:05:31,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-28 09:05:31,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2021-10-28 09:05:31,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 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) [2021-10-28 09:05:31,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-10-28 09:05:31,142 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 6 [2021-10-28 09:05:31,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:05:31,143 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-10-28 09:05:31,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:05:31,143 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-10-28 09:05:31,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 09:05:31,144 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:05:31,144 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:05:31,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:05:31,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:05:31,365 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:05:31,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:05:31,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1806862075, now seen corresponding path program 1 times [2021-10-28 09:05:31,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:05:31,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1575211335] [2021-10-28 09:05:31,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:05:31,368 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:05:31,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:05:31,370 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:05:31,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 09:05:31,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:05:31,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 09:05:31,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:05:32,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:05:32,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:05:32,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:05:32,238 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:05:32,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1575211335] [2021-10-28 09:05:32,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1575211335] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:05:32,240 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:05:32,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-28 09:05:32,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403270360] [2021-10-28 09:05:32,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:05:32,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:05:32,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:05:32,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:05:32,244 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:05:35,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:05:35,901 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-10-28 09:05:35,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:05:35,902 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-28 09:05:35,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:05:35,904 INFO L225 Difference]: With dead ends: 19 [2021-10-28 09:05:35,904 INFO L226 Difference]: Without dead ends: 15 [2021-10-28 09:05:35,905 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:05:35,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-28 09:05:35,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-28 09:05:35,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:05:35,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-10-28 09:05:35,912 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 7 [2021-10-28 09:05:35,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:05:35,913 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-10-28 09:05:35,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:05:35,914 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-10-28 09:05:35,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 09:05:35,915 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:05:35,915 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:05:35,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:05:36,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:05:36,118 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:05:36,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:05:36,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1274494228, now seen corresponding path program 1 times [2021-10-28 09:05:36,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:05:36,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1410691032] [2021-10-28 09:05:36,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:05:36,121 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:05:36,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:05:36,129 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:05:36,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 09:05:36,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:05:36,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:05:36,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:05:55,651 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)))) (or (and .cse0 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (not .cse0)))) is different from false [2021-10-28 09:05:57,729 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)))) (or (and .cse0 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (not .cse0)))) is different from true [2021-10-28 09:06:03,966 WARN L838 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)) is different from false [2021-10-28 09:06:06,049 WARN L860 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)) is different from true [2021-10-28 09:06:18,597 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53)) (ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (ULTIMATE.start_main_~r~0 (_ BitVec 32))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~r~0)) ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) currentRoundingMode ULTIMATE.start_main_~r~0)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) ULTIMATE.start_main_~x~0))) (_ bv0 32))) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) is different from false [2021-10-28 09:06:18,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:18,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:06:37,558 WARN L838 $PredicateComparison]: unable to prove that (or (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32))) is different from false [2021-10-28 09:06:39,650 WARN L860 $PredicateComparison]: unable to prove that (or (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32))) is different from true [2021-10-28 09:06:39,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:39,686 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:06:39,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1410691032] [2021-10-28 09:06:39,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1410691032] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:06:39,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:06:39,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-28 09:06:39,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649961757] [2021-10-28 09:06:39,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:06:39,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:06:39,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:06:39,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=4, Unknown=7, NotChecked=20, Total=42 [2021-10-28 09:06:39,692 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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) [2021-10-28 09:06:44,102 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (.cse0 (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)))) (and (or (and .cse0 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (and .cse1 (not .cse0))) (or .cse1 .cse0))) is different from false [2021-10-28 09:06:46,193 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (.cse0 (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)))) (and (or (and .cse0 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (and .cse1 (not .cse0))) (or .cse1 .cse0))) is different from true [2021-10-28 09:06:48,284 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53)) (ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (ULTIMATE.start_main_~r~0 (_ BitVec 32))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~r~0)) ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) currentRoundingMode ULTIMATE.start_main_~r~0)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) ULTIMATE.start_main_~x~0))) (_ bv0 32))) (not (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) is different from false [2021-10-28 09:06:50,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:06:50,573 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-10-28 09:06:50,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:06:50,574 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-28 09:06:50,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:06:50,575 INFO L225 Difference]: With dead ends: 19 [2021-10-28 09:06:50,575 INFO L226 Difference]: Without dead ends: 15 [2021-10-28 09:06:50,576 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.9s TimeCoverageRelationStatistics Valid=15, Invalid=5, Unknown=10, NotChecked=42, Total=72 [2021-10-28 09:06:50,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-28 09:06:50,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-28 09:06:50,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:06:50,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-10-28 09:06:50,581 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 9 [2021-10-28 09:06:50,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:06:50,582 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-10-28 09:06:50,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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) [2021-10-28 09:06:50,582 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-10-28 09:06:50,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 09:06:50,583 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:06:50,583 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:50,606 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-28 09:06:50,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:06:50,786 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:06:50,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:50,787 INFO L85 PathProgramCache]: Analyzing trace with hash 855725686, now seen corresponding path program 1 times [2021-10-28 09:06:50,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:06:50,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1632357134] [2021-10-28 09:06:50,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:50,789 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:06:50,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:06:50,792 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:06:50,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 09:06:51,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:06:51,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:06:51,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:06:52,115 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:52,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:06:52,413 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:06:52,413 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:06:52,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1632357134] [2021-10-28 09:06:52,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1632357134] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-28 09:06:52,414 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:06:52,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-28 09:06:52,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613628353] [2021-10-28 09:06:52,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:06:52,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:06:52,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:06:52,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:06:52,418 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:06:58,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:06:58,050 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2021-10-28 09:06:58,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:06:58,050 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-28 09:06:58,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:06:58,051 INFO L225 Difference]: With dead ends: 22 [2021-10-28 09:06:58,051 INFO L226 Difference]: Without dead ends: 12 [2021-10-28 09:06:58,052 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:06:58,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-28 09:06:58,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-28 09:06:58,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0) internal successors, (11), 11 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:06:58,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2021-10-28 09:06:58,056 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 10 [2021-10-28 09:06:58,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:06:58,056 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2021-10-28 09:06:58,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:06:58,057 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2021-10-28 09:06:58,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 09:06:58,058 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:06:58,058 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:06:58,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:06:58,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:06:58,269 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:06:58,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:06:58,270 INFO L85 PathProgramCache]: Analyzing trace with hash 757648847, now seen corresponding path program 1 times [2021-10-28 09:06:58,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:06:58,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [619267352] [2021-10-28 09:06:58,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:06:58,271 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:06:58,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:06:58,274 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:06:58,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-28 09:07:16,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:07:16,747 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:07:26,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:07:26,786 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-28 09:07:26,786 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 09:07:26,788 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:07:26,791 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:07:26,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-28 09:07:26,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:07:26,996 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-10-28 09:07:27,001 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:07:27,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:07:27 BoogieIcfgContainer [2021-10-28 09:07:27,035 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:07:27,036 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:07:27,036 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:07:27,036 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:07:27,037 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:04:17" (3/4) ... [2021-10-28 09:07:27,040 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 09:07:27,133 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:07:27,134 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:07:27,136 INFO L168 Benchmark]: Toolchain (without parser) took 196514.95 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 28.5 MB in the beginning and 29.3 MB in the end (delta: -754.3 kB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. [2021-10-28 09:07:27,139 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 52.4 MB. Free memory was 33.1 MB in the beginning and 33.0 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:07:27,140 INFO L168 Benchmark]: CACSL2BoogieTranslator took 353.51 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 28.4 MB in the beginning and 47.5 MB in the end (delta: -19.1 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:07:27,146 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.86 ms. Allocated memory is still 65.0 MB. Free memory was 47.3 MB in the beginning and 46.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:07:27,146 INFO L168 Benchmark]: Boogie Preprocessor took 35.11 ms. Allocated memory is still 65.0 MB. Free memory was 46.0 MB in the beginning and 44.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:07:27,147 INFO L168 Benchmark]: RCFGBuilder took 6393.41 ms. Allocated memory is still 65.0 MB. Free memory was 44.5 MB in the beginning and 34.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:07:27,148 INFO L168 Benchmark]: TraceAbstraction took 189579.79 ms. Allocated memory is still 65.0 MB. Free memory was 34.4 MB in the beginning and 31.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. [2021-10-28 09:07:27,148 INFO L168 Benchmark]: Witness Printer took 98.32 ms. Allocated memory is still 65.0 MB. Free memory was 31.4 MB in the beginning and 29.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:07:27,160 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 52.4 MB. Free memory was 33.1 MB in the beginning and 33.0 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 353.51 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 28.4 MB in the beginning and 47.5 MB in the end (delta: -19.1 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.86 ms. Allocated memory is still 65.0 MB. Free memory was 47.3 MB in the beginning and 46.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.11 ms. Allocated memory is still 65.0 MB. Free memory was 46.0 MB in the beginning and 44.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 6393.41 ms. Allocated memory is still 65.0 MB. Free memory was 44.5 MB in the beginning and 34.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 189579.79 ms. Allocated memory is still 65.0 MB. Free memory was 34.4 MB in the beginning and 31.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. * Witness Printer took 98.32 ms. Allocated memory is still 65.0 MB. Free memory was 31.4 MB in the beginning and 29.3 MB in the end (delta: 2.1 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 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; [L28] a = __VERIFIER_nondet_double() [L29] x = a / 2.0 [L30] r = 0 VAL [counter=0] [L32] EXPR counter++ VAL [counter=1] [L32] COND TRUE counter++<1 [L17] COND FALSE !(!(cond)) VAL [counter=1] [L35] COND FALSE !(!(x > r)) [L37] x = x - r [L38] r = r + 1 VAL [counter=1] [L32] EXPR counter++ VAL [counter=2] [L32] COND FALSE !(counter++<1) [L17] COND TRUE !(cond) VAL [counter=2] [L19] reach_error() VAL [counter=2] - 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, 16 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 189.4s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 41.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 50 SDtfs, 16 SDslu, 89 SDs, 0 SdLazy, 30 SolverSat, 6 SolverUnsat, 9 SolverUnknown, 0 SolverNotchecked, 24.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 13 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 49.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 23.8s SatisfiabilityAnalysisTime, 112.4s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 56 ConstructedInterpolants, 4 QuantifiedInterpolants, 527 SizeOfPredicates, 14 NumberOfNonLiveVariables, 145 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 2/6 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! [2021-10-28 09:07:27,405 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-10-28 09:07:27,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e11d2fde-c8b0-45cb-931c-15c9a2b22c69/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...