./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ --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 e89b4ab54b22145b4041cfb458aca993f2d791ac86940dcd03d48a90a5273393 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:34:40,672 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:34:40,674 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:34:40,716 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:34:40,717 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:34:40,719 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:34:40,721 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:34:40,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:34:40,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:34:40,727 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:34:40,729 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:34:40,731 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:34:40,732 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:34:40,733 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:34:40,735 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:34:40,737 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:34:40,738 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:34:40,739 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:34:40,742 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:34:40,746 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:34:40,748 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:34:40,752 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:34:40,754 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:34:40,755 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:34:40,760 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:34:40,760 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:34:40,768 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:34:40,770 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:34:40,771 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:34:40,772 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:34:40,773 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:34:40,774 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:34:40,776 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:34:40,777 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:34:40,781 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:34:40,781 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:34:40,782 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:34:40,782 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:34:40,782 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:34:40,783 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:34:40,784 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:34:40,785 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:34:40,813 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:34:40,814 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:34:40,814 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:34:40,814 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:34:40,815 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:34:40,815 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:34:40,816 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:34:40,816 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:34:40,816 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:34:40,816 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:34:40,817 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:34:40,817 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:34:40,817 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:34:40,817 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:34:40,817 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:34:40,818 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:34:40,818 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:34:40,818 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:34:40,818 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:34:40,818 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:34:40,819 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:34:40,819 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:34:40,819 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:34:40,819 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:34:40,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:34:40,820 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:34:40,820 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:34:40,820 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:34:40,820 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:34:40,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:34:40,821 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:34:40,821 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:34:40,821 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:34:40,821 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_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e89b4ab54b22145b4041cfb458aca993f2d791ac86940dcd03d48a90a5273393 [2022-10-17 10:34:41,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:34:41,143 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:34:41,147 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:34:41,148 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:34:41,149 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:34:41,150 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.c [2022-10-17 10:34:41,229 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/data/ecf204452/6a6364a12aa24df0bf0ef7d5e1e74477/FLAG9551a644f [2022-10-17 10:34:41,681 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:34:41,681 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.c [2022-10-17 10:34:41,688 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/data/ecf204452/6a6364a12aa24df0bf0ef7d5e1e74477/FLAG9551a644f [2022-10-17 10:34:42,062 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/data/ecf204452/6a6364a12aa24df0bf0ef7d5e1e74477 [2022-10-17 10:34:42,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:34:42,066 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:34:42,073 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:34:42,074 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:34:42,077 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:34:42,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:34:42" (1/1) ... [2022-10-17 10:34:42,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32d82a27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:34:42, skipping insertion in model container [2022-10-17 10:34:42,082 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:34:42" (1/1) ... [2022-10-17 10:34:42,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:34:42,107 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:34:42,348 WARN L230 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_87e30016-aeec-42e9-a97d-8e15ec2517b9/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.c[489,502] [2022-10-17 10:34:42,394 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:34:42,404 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:34:42,421 WARN L230 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_87e30016-aeec-42e9-a97d-8e15ec2517b9/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.c[489,502] [2022-10-17 10:34:42,456 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:34:42,475 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:34:42,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:34:42 WrapperNode [2022-10-17 10:34:42,476 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:34:42,481 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:34:42,481 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:34:42,481 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:34:42,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:34:42" (1/1) ... [2022-10-17 10:34:42,498 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:34:42" (1/1) ... [2022-10-17 10:34:42,528 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2022-10-17 10:34:42,528 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:34:42,529 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:34:42,529 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:34:42,530 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:34:42,539 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:34:42" (1/1) ... [2022-10-17 10:34:42,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:34:42" (1/1) ... [2022-10-17 10:34:42,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:34:42" (1/1) ... [2022-10-17 10:34:42,551 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:34:42" (1/1) ... [2022-10-17 10:34:42,554 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:34:42" (1/1) ... [2022-10-17 10:34:42,558 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:34:42" (1/1) ... [2022-10-17 10:34:42,567 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:34:42" (1/1) ... [2022-10-17 10:34:42,572 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:34:42" (1/1) ... [2022-10-17 10:34:42,576 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:34:42,577 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:34:42,577 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:34:42,577 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:34:42,580 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:34:42" (1/1) ... [2022-10-17 10:34:42,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:34:42,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:34:42,623 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:34:42,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:34:42,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:34:42,678 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-17 10:34:42,678 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-17 10:34:42,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:34:42,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:34:42,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:34:42,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-10-17 10:34:42,684 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-10-17 10:34:42,739 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:34:42,742 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:34:42,992 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:34:43,014 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:34:43,025 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 10:34:43,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:34:43 BoogieIcfgContainer [2022-10-17 10:34:43,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:34:43,031 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:34:43,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:34:43,035 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:34:43,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:34:42" (1/3) ... [2022-10-17 10:34:43,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@139f0ceb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:34:43, skipping insertion in model container [2022-10-17 10:34:43,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:34:42" (2/3) ... [2022-10-17 10:34:43,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@139f0ceb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:34:43, skipping insertion in model container [2022-10-17 10:34:43,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:34:43" (3/3) ... [2022-10-17 10:34:43,040 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound2.c [2022-10-17 10:34:43,063 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:34:43,064 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:34:43,139 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:34:43,154 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2f2be7d7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:34:43,162 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:34:43,172 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-10-17 10:34:43,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-10-17 10:34:43,183 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:34:43,184 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:34:43,184 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:34:43,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:34:43,190 INFO L85 PathProgramCache]: Analyzing trace with hash 516392259, now seen corresponding path program 1 times [2022-10-17 10:34:43,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:34:43,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356703899] [2022-10-17 10:34:43,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:34:43,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:34:43,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:34:43,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:34:43,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:34:43,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:34:43,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:34:43,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-17 10:34:43,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:34:43,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:34:43,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:34:43,519 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-17 10:34:43,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:34:43,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356703899] [2022-10-17 10:34:43,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356703899] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:34:43,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:34:43,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:34:43,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828659948] [2022-10-17 10:34:43,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:34:43,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:34:43,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:34:43,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:34:43,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:34:43,581 INFO L87 Difference]: Start difference. First operand has 32 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-17 10:34:43,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:34:43,608 INFO L93 Difference]: Finished difference Result 61 states and 99 transitions. [2022-10-17 10:34:43,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:34:43,611 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2022-10-17 10:34:43,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:34:43,618 INFO L225 Difference]: With dead ends: 61 [2022-10-17 10:34:43,619 INFO L226 Difference]: Without dead ends: 28 [2022-10-17 10:34:43,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:34:43,627 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:34:43,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:34:43,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-10-17 10:34:43,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-10-17 10:34:43,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-10-17 10:34:43,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2022-10-17 10:34:43,672 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 29 [2022-10-17 10:34:43,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:34:43,674 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2022-10-17 10:34:43,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-17 10:34:43,675 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2022-10-17 10:34:43,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-10-17 10:34:43,677 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:34:43,677 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:34:43,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:34:43,678 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:34:43,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:34:43,679 INFO L85 PathProgramCache]: Analyzing trace with hash 501437177, now seen corresponding path program 1 times [2022-10-17 10:34:43,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:34:43,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284470109] [2022-10-17 10:34:43,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:34:43,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:34:43,704 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:34:43,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [677701682] [2022-10-17 10:34:43,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:34:43,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:34:43,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:34:43,707 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:34:43,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 10:34:43,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:34:43,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-17 10:34:43,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:34:43,995 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-17 10:34:43,995 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:34:43,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:34:43,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284470109] [2022-10-17 10:34:43,996 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:34:43,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677701682] [2022-10-17 10:34:43,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677701682] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:34:43,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:34:43,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:34:43,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030859220] [2022-10-17 10:34:43,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:34:43,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:34:44,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:34:44,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:34:44,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:34:44,003 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-17 10:34:44,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:34:44,101 INFO L93 Difference]: Finished difference Result 44 states and 61 transitions. [2022-10-17 10:34:44,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:34:44,102 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2022-10-17 10:34:44,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:34:44,104 INFO L225 Difference]: With dead ends: 44 [2022-10-17 10:34:44,104 INFO L226 Difference]: Without dead ends: 42 [2022-10-17 10:34:44,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:34:44,106 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 7 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:34:44,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 127 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:34:44,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-10-17 10:34:44,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2022-10-17 10:34:44,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 20 states have (on average 1.25) internal successors, (25), 22 states have internal predecessors, (25), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2022-10-17 10:34:44,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 58 transitions. [2022-10-17 10:34:44,123 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 58 transitions. Word has length 29 [2022-10-17 10:34:44,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:34:44,124 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 58 transitions. [2022-10-17 10:34:44,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-17 10:34:44,124 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 58 transitions. [2022-10-17 10:34:44,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-10-17 10:34:44,126 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:34:44,126 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:34:44,161 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-10-17 10:34:44,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:34:44,349 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:34:44,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:34:44,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1017640517, now seen corresponding path program 1 times [2022-10-17 10:34:44,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:34:44,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675929521] [2022-10-17 10:34:44,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:34:44,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:34:44,372 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:34:44,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1333833915] [2022-10-17 10:34:44,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:34:44,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:34:44,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:34:44,375 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:34:44,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 10:34:44,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:34:44,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 29 conjunts are in the unsatisfiable core [2022-10-17 10:34:44,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:34:44,928 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-17 10:34:44,928 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:34:44,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:34:44,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675929521] [2022-10-17 10:34:44,932 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:34:44,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333833915] [2022-10-17 10:34:44,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333833915] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:34:44,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:34:44,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-17 10:34:44,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954052757] [2022-10-17 10:34:44,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:34:44,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-17 10:34:44,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:34:44,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-17 10:34:44,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:34:44,939 INFO L87 Difference]: Start difference. First operand 41 states and 58 transitions. Second operand has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-17 10:34:45,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:34:45,172 INFO L93 Difference]: Finished difference Result 66 states and 98 transitions. [2022-10-17 10:34:45,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 10:34:45,173 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 34 [2022-10-17 10:34:45,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:34:45,179 INFO L225 Difference]: With dead ends: 66 [2022-10-17 10:34:45,179 INFO L226 Difference]: Without dead ends: 64 [2022-10-17 10:34:45,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-10-17 10:34:45,185 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 31 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:34:45,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 149 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:34:45,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-10-17 10:34:45,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 57. [2022-10-17 10:34:45,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 31 states have internal predecessors, (38), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2022-10-17 10:34:45,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 83 transitions. [2022-10-17 10:34:45,220 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 83 transitions. Word has length 34 [2022-10-17 10:34:45,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:34:45,221 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 83 transitions. [2022-10-17 10:34:45,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-17 10:34:45,221 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 83 transitions. [2022-10-17 10:34:45,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-10-17 10:34:45,223 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:34:45,223 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:34:45,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:34:45,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:34:45,437 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:34:45,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:34:45,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1133401081, now seen corresponding path program 1 times [2022-10-17 10:34:45,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:34:45,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081720881] [2022-10-17 10:34:45,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:34:45,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:34:45,455 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:34:45,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1762285840] [2022-10-17 10:34:45,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:34:45,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:34:45,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:34:45,457 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:34:45,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 10:34:45,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:34:45,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 19 conjunts are in the unsatisfiable core [2022-10-17 10:34:45,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:34:45,732 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-17 10:34:45,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:34:45,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:34:45,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081720881] [2022-10-17 10:34:45,874 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:34:45,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762285840] [2022-10-17 10:34:45,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762285840] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:34:45,875 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:34:45,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2022-10-17 10:34:45,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508538628] [2022-10-17 10:34:45,876 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-17 10:34:45,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 10:34:45,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:34:45,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 10:34:45,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:34:45,878 INFO L87 Difference]: Start difference. First operand 57 states and 83 transitions. Second operand has 9 states, 8 states have (on average 2.125) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-10-17 10:34:46,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:34:46,073 INFO L93 Difference]: Finished difference Result 64 states and 89 transitions. [2022-10-17 10:34:46,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:34:46,073 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 39 [2022-10-17 10:34:46,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:34:46,075 INFO L225 Difference]: With dead ends: 64 [2022-10-17 10:34:46,075 INFO L226 Difference]: Without dead ends: 60 [2022-10-17 10:34:46,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:34:46,077 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 17 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:34:46,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 156 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:34:46,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-10-17 10:34:46,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2022-10-17 10:34:46,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 32 states have (on average 1.28125) internal successors, (41), 34 states have internal predecessors, (41), 22 states have call successors, (22), 5 states have call predecessors, (22), 5 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-10-17 10:34:46,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 83 transitions. [2022-10-17 10:34:46,095 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 83 transitions. Word has length 39 [2022-10-17 10:34:46,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:34:46,096 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 83 transitions. [2022-10-17 10:34:46,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-10-17 10:34:46,096 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 83 transitions. [2022-10-17 10:34:46,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-10-17 10:34:46,098 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:34:46,098 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:34:46,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:34:46,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-10-17 10:34:46,313 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:34:46,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:34:46,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1954831506, now seen corresponding path program 1 times [2022-10-17 10:34:46,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:34:46,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670322650] [2022-10-17 10:34:46,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:34:46,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:34:46,343 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:34:46,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [810858025] [2022-10-17 10:34:46,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:34:46,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:34:46,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:34:46,346 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:34:46,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-17 10:34:46,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:34:46,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-17 10:34:46,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:34:46,425 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-10-17 10:34:46,425 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:34:46,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:34:46,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670322650] [2022-10-17 10:34:46,426 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:34:46,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810858025] [2022-10-17 10:34:46,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810858025] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:34:46,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:34:46,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:34:46,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544536188] [2022-10-17 10:34:46,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:34:46,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:34:46,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:34:46,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:34:46,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:34:46,431 INFO L87 Difference]: Start difference. First operand 60 states and 83 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-10-17 10:34:46,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:34:46,493 INFO L93 Difference]: Finished difference Result 66 states and 88 transitions. [2022-10-17 10:34:46,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:34:46,494 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 45 [2022-10-17 10:34:46,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:34:46,499 INFO L225 Difference]: With dead ends: 66 [2022-10-17 10:34:46,499 INFO L226 Difference]: Without dead ends: 64 [2022-10-17 10:34:46,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:34:46,501 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 5 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:34:46,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 123 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:34:46,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-10-17 10:34:46,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-10-17 10:34:46,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 37 states have internal predecessors, (44), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-10-17 10:34:46,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 86 transitions. [2022-10-17 10:34:46,535 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 86 transitions. Word has length 45 [2022-10-17 10:34:46,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:34:46,536 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 86 transitions. [2022-10-17 10:34:46,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-10-17 10:34:46,539 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 86 transitions. [2022-10-17 10:34:46,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-10-17 10:34:46,540 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:34:46,540 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:34:46,562 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-10-17 10:34:46,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:34:46,741 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:34:46,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:34:46,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1265228631, now seen corresponding path program 1 times [2022-10-17 10:34:46,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:34:46,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076144921] [2022-10-17 10:34:46,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:34:46,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:34:46,755 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:34:46,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1758074696] [2022-10-17 10:34:46,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:34:46,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:34:46,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:34:46,757 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:34:46,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-17 10:34:46,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:34:46,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-17 10:34:46,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:34:46,913 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-10-17 10:34:46,913 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:34:46,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:34:46,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076144921] [2022-10-17 10:34:46,914 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:34:46,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758074696] [2022-10-17 10:34:46,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758074696] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:34:46,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:34:46,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:34:46,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475324711] [2022-10-17 10:34:46,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:34:46,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:34:46,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:34:46,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:34:46,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:34:46,917 INFO L87 Difference]: Start difference. First operand 64 states and 86 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-17 10:34:46,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:34:46,976 INFO L93 Difference]: Finished difference Result 80 states and 104 transitions. [2022-10-17 10:34:46,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:34:46,978 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 47 [2022-10-17 10:34:46,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:34:46,980 INFO L225 Difference]: With dead ends: 80 [2022-10-17 10:34:46,981 INFO L226 Difference]: Without dead ends: 78 [2022-10-17 10:34:46,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:34:46,983 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 6 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:34:46,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 127 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:34:46,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-10-17 10:34:47,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 75. [2022-10-17 10:34:47,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 44 states have internal predecessors, (50), 25 states have call successors, (25), 8 states have call predecessors, (25), 8 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2022-10-17 10:34:47,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 98 transitions. [2022-10-17 10:34:47,017 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 98 transitions. Word has length 47 [2022-10-17 10:34:47,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:34:47,018 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 98 transitions. [2022-10-17 10:34:47,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-17 10:34:47,018 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 98 transitions. [2022-10-17 10:34:47,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-10-17 10:34:47,023 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:34:47,023 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:34:47,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-17 10:34:47,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:34:47,237 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:34:47,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:34:47,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1617953190, now seen corresponding path program 1 times [2022-10-17 10:34:47,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:34:47,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625483895] [2022-10-17 10:34:47,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:34:47,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:34:47,251 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:34:47,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [500330907] [2022-10-17 10:34:47,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:34:47,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:34:47,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:34:47,253 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:34:47,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-17 10:34:47,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:34:47,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-17 10:34:47,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:34:47,373 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-10-17 10:34:47,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:34:47,513 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-10-17 10:34:47,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:34:47,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625483895] [2022-10-17 10:34:47,513 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:34:47,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500330907] [2022-10-17 10:34:47,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500330907] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:34:47,514 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:34:47,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2022-10-17 10:34:47,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901097806] [2022-10-17 10:34:47,515 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:34:47,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 10:34:47,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:34:47,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 10:34:47,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:34:47,518 INFO L87 Difference]: Start difference. First operand 75 states and 98 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-10-17 10:34:47,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:34:47,717 INFO L93 Difference]: Finished difference Result 84 states and 108 transitions. [2022-10-17 10:34:47,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 10:34:47,718 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 50 [2022-10-17 10:34:47,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:34:47,722 INFO L225 Difference]: With dead ends: 84 [2022-10-17 10:34:47,722 INFO L226 Difference]: Without dead ends: 80 [2022-10-17 10:34:47,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 89 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:34:47,724 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 13 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:34:47,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 122 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:34:47,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-10-17 10:34:47,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-10-17 10:34:47,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 48 states have internal predecessors, (52), 25 states have call successors, (25), 9 states have call predecessors, (25), 9 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2022-10-17 10:34:47,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 101 transitions. [2022-10-17 10:34:47,763 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 101 transitions. Word has length 50 [2022-10-17 10:34:47,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:34:47,764 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 101 transitions. [2022-10-17 10:34:47,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-10-17 10:34:47,765 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 101 transitions. [2022-10-17 10:34:47,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-10-17 10:34:47,770 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:34:47,771 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:34:47,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-17 10:34:47,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-10-17 10:34:47,993 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:34:47,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:34:47,994 INFO L85 PathProgramCache]: Analyzing trace with hash 860577929, now seen corresponding path program 1 times [2022-10-17 10:34:47,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:34:47,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955585143] [2022-10-17 10:34:47,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:34:47,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:34:48,007 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:34:48,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [158707058] [2022-10-17 10:34:48,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:34:48,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:34:48,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:34:48,009 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:34:48,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-17 10:34:48,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:34:48,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 44 conjunts are in the unsatisfiable core [2022-10-17 10:34:48,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:34:48,512 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 18 proven. 17 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-17 10:34:48,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:34:48,852 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 15 proven. 8 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-10-17 10:34:48,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:34:48,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955585143] [2022-10-17 10:34:48,853 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:34:48,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158707058] [2022-10-17 10:34:48,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158707058] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:34:48,853 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:34:48,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 16 [2022-10-17 10:34:48,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432121237] [2022-10-17 10:34:48,854 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:34:48,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-17 10:34:48,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:34:48,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-17 10:34:48,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-10-17 10:34:48,856 INFO L87 Difference]: Start difference. First operand 80 states and 101 transitions. Second operand has 16 states, 15 states have (on average 2.066666666666667) internal successors, (31), 13 states have internal predecessors, (31), 6 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 8 states have call predecessors, (16), 6 states have call successors, (16) [2022-10-17 10:34:51,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-10-17 10:34:51,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:34:51,875 INFO L93 Difference]: Finished difference Result 122 states and 161 transitions. [2022-10-17 10:34:51,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-17 10:34:51,876 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.066666666666667) internal successors, (31), 13 states have internal predecessors, (31), 6 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 8 states have call predecessors, (16), 6 states have call successors, (16) Word has length 52 [2022-10-17 10:34:51,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:34:51,878 INFO L225 Difference]: With dead ends: 122 [2022-10-17 10:34:51,878 INFO L226 Difference]: Without dead ends: 120 [2022-10-17 10:34:51,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 88 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2022-10-17 10:34:51,880 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 58 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 127 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-10-17 10:34:51,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 96 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 402 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2022-10-17 10:34:51,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-10-17 10:34:51,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 92. [2022-10-17 10:34:51,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 54 states have (on average 1.1296296296296295) internal successors, (61), 57 states have internal predecessors, (61), 25 states have call successors, (25), 12 states have call predecessors, (25), 12 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2022-10-17 10:34:51,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 110 transitions. [2022-10-17 10:34:51,915 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 110 transitions. Word has length 52 [2022-10-17 10:34:51,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:34:51,916 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 110 transitions. [2022-10-17 10:34:51,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.066666666666667) internal successors, (31), 13 states have internal predecessors, (31), 6 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 8 states have call predecessors, (16), 6 states have call successors, (16) [2022-10-17 10:34:51,916 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 110 transitions. [2022-10-17 10:34:51,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-10-17 10:34:51,918 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:34:51,918 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:34:51,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-17 10:34:52,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:34:52,137 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:34:52,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:34:52,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1226126935, now seen corresponding path program 2 times [2022-10-17 10:34:52,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:34:52,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430856730] [2022-10-17 10:34:52,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:34:52,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:34:52,161 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:34:52,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [664203383] [2022-10-17 10:34:52,167 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:34:52,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:34:52,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:34:52,168 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:34:52,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-17 10:34:52,234 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-17 10:34:52,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:34:52,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 39 conjunts are in the unsatisfiable core [2022-10-17 10:34:52,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:34:52,751 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-10-17 10:34:52,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:34:53,132 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-10-17 10:34:53,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:34:53,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430856730] [2022-10-17 10:34:53,133 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:34:53,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664203383] [2022-10-17 10:34:53,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664203383] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:34:53,133 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:34:53,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 19 [2022-10-17 10:34:53,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930110922] [2022-10-17 10:34:53,134 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:34:53,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-10-17 10:34:53,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:34:53,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-10-17 10:34:53,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2022-10-17 10:34:53,136 INFO L87 Difference]: Start difference. First operand 92 states and 110 transitions. Second operand has 19 states, 16 states have (on average 1.875) internal successors, (30), 14 states have internal predecessors, (30), 9 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 9 states have call predecessors, (17), 7 states have call successors, (17) [2022-10-17 10:34:54,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:34:54,084 INFO L93 Difference]: Finished difference Result 160 states and 185 transitions. [2022-10-17 10:34:54,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-17 10:34:54,085 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 1.875) internal successors, (30), 14 states have internal predecessors, (30), 9 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 9 states have call predecessors, (17), 7 states have call successors, (17) Word has length 57 [2022-10-17 10:34:54,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:34:54,086 INFO L225 Difference]: With dead ends: 160 [2022-10-17 10:34:54,086 INFO L226 Difference]: Without dead ends: 82 [2022-10-17 10:34:54,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 93 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2022-10-17 10:34:54,089 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 50 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-17 10:34:54,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 100 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-17 10:34:54,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-10-17 10:34:54,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2022-10-17 10:34:54,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 51 states have (on average 1.0784313725490196) internal successors, (55), 53 states have internal predecessors, (55), 18 states have call successors, (18), 12 states have call predecessors, (18), 12 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2022-10-17 10:34:54,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2022-10-17 10:34:54,114 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 57 [2022-10-17 10:34:54,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:34:54,114 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2022-10-17 10:34:54,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 1.875) internal successors, (30), 14 states have internal predecessors, (30), 9 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 9 states have call predecessors, (17), 7 states have call successors, (17) [2022-10-17 10:34:54,115 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2022-10-17 10:34:54,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-10-17 10:34:54,116 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:34:54,116 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:34:54,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-17 10:34:54,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:34:54,329 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:34:54,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:34:54,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1236716699, now seen corresponding path program 1 times [2022-10-17 10:34:54,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:34:54,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330525810] [2022-10-17 10:34:54,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:34:54,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:34:54,341 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:34:54,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [559716071] [2022-10-17 10:34:54,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:34:54,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:34:54,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:34:54,343 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:34:54,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-17 10:34:54,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:34:54,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-17 10:34:54,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:34:54,531 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-10-17 10:34:54,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:34:54,672 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-10-17 10:34:54,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:34:54,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330525810] [2022-10-17 10:34:54,673 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:34:54,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559716071] [2022-10-17 10:34:54,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559716071] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:34:54,673 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:34:54,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-10-17 10:34:54,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411031442] [2022-10-17 10:34:54,674 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:34:54,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-17 10:34:54,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:34:54,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-17 10:34:54,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:34:54,678 INFO L87 Difference]: Start difference. First operand 82 states and 90 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 7 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 5 states have call predecessors, (17), 6 states have call successors, (17) [2022-10-17 10:34:54,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:34:54,841 INFO L93 Difference]: Finished difference Result 86 states and 93 transitions. [2022-10-17 10:34:54,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 10:34:54,842 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 7 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 5 states have call predecessors, (17), 6 states have call successors, (17) Word has length 65 [2022-10-17 10:34:54,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:34:54,842 INFO L225 Difference]: With dead ends: 86 [2022-10-17 10:34:54,842 INFO L226 Difference]: Without dead ends: 0 [2022-10-17 10:34:54,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-10-17 10:34:54,844 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 10 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:34:54,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 118 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:34:54,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-10-17 10:34:54,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-10-17 10:34:54,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-10-17 10:34:54,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-10-17 10:34:54,845 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 65 [2022-10-17 10:34:54,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:34:54,846 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-10-17 10:34:54,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 7 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 5 states have call predecessors, (17), 6 states have call successors, (17) [2022-10-17 10:34:54,846 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-10-17 10:34:54,846 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-10-17 10:34:54,850 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-10-17 10:34:54,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-17 10:34:55,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-10-17 10:34:55,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-10-17 10:34:57,801 INFO L895 garLoopResultBuilder]: At program point L35-2(lines 35 52) the Hoare annotation is: (let ((.cse0 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse1 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) (.cse2 (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|)) (.cse3 (= |ULTIMATE.start_main_~s~0#1| 1))) (or (and (= |ULTIMATE.start_main_~y~0#1| (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) (<= |ULTIMATE.start_main_~y~0#1| 2) (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~a~0#1|) .cse0 (= (+ |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|) 0) .cse1 .cse2 (= (+ |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~s~0#1|) 1) .cse3) (and (= |ULTIMATE.start_main_~p~0#1| 1) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) .cse0 .cse1 .cse2 (<= |ULTIMATE.start_main_~x~0#1| 2) .cse3))) [2022-10-17 10:34:57,801 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-10-17 10:34:57,801 INFO L902 garLoopResultBuilder]: At program point L58(lines 18 59) the Hoare annotation is: true [2022-10-17 10:34:57,801 INFO L895 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2)) [2022-10-17 10:34:57,802 INFO L895 garLoopResultBuilder]: At program point L56(line 56) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse1 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse2 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse3 (<= |ULTIMATE.start_main_~x~0#1| 2))) (or (and .cse0 .cse1 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) .cse2 .cse3 (= |ULTIMATE.start_main_~s~0#1| 1)) (and .cse0 .cse1 (= (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|) .cse2 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|) .cse3))) [2022-10-17 10:34:57,802 INFO L895 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (let ((.cse0 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse1 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) (.cse2 (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|)) (.cse3 (= |ULTIMATE.start_main_~s~0#1| 1))) (or (and (= |ULTIMATE.start_main_~y~0#1| (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) (<= |ULTIMATE.start_main_~y~0#1| 2) (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~a~0#1|) .cse0 (= (+ |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|) 0) .cse1 .cse2 (= (+ |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~s~0#1|) 1) .cse3) (and (= |ULTIMATE.start_main_~p~0#1| 1) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) .cse0 .cse1 .cse2 (<= |ULTIMATE.start_main_~x~0#1| 2) .cse3))) [2022-10-17 10:34:57,802 INFO L899 garLoopResultBuilder]: For program point L38(lines 35 52) no Hoare annotation was computed. [2022-10-17 10:34:57,802 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse2 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse5 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse1 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse3 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse4 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse6 (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|)) (.cse7 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse8 (= |ULTIMATE.start_main_~s~0#1| 1))) (or (and .cse0 .cse1 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8) (and (not (< |ULTIMATE.start_main_~b~0#1| 0)) (not (= |ULTIMATE.start_main_~b~0#1| 0)) (= |ULTIMATE.start_main_~y~0#1| (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) .cse0 .cse2 .cse4 (= (+ |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|) 0) .cse5 .cse6 (= (+ |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~s~0#1|) 1)) (and (= |ULTIMATE.start_main_~p~0#1| 1) .cse1 (<= |ULTIMATE.start_main_~b~0#1| 1) (= (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|) .cse3 (<= 1 |ULTIMATE.start_main_~a~0#1|) .cse4 .cse6 .cse7 .cse8))) [2022-10-17 10:34:57,802 INFO L895 garLoopResultBuilder]: At program point L36-1(line 36) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse2 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse5 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse1 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse3 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse4 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse6 (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|)) (.cse7 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse8 (= |ULTIMATE.start_main_~s~0#1| 1))) (or (and .cse0 .cse1 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8) (and (not (< |ULTIMATE.start_main_~b~0#1| 0)) (not (= |ULTIMATE.start_main_~b~0#1| 0)) (= |ULTIMATE.start_main_~y~0#1| (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) .cse0 .cse2 .cse4 (= (+ |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|) 0) .cse5 .cse6 (= (+ |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~s~0#1|) 1)) (and (= |ULTIMATE.start_main_~p~0#1| 1) .cse1 (<= |ULTIMATE.start_main_~b~0#1| 1) (= (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|) .cse3 (<= 1 |ULTIMATE.start_main_~a~0#1|) .cse4 .cse6 .cse7 .cse8))) [2022-10-17 10:34:57,802 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-10-17 10:34:57,803 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-10-17 10:34:57,803 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-10-17 10:34:57,803 INFO L899 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2022-10-17 10:34:57,803 INFO L899 garLoopResultBuilder]: For program point L57(line 57) no Hoare annotation was computed. [2022-10-17 10:34:57,803 INFO L895 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2)) [2022-10-17 10:34:57,803 INFO L895 garLoopResultBuilder]: At program point L24-1(line 24) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2)) [2022-10-17 10:34:57,803 INFO L895 garLoopResultBuilder]: At program point L55(line 55) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse1 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse2 (= |ULTIMATE.start_main_~s~0#1| 1))) (or (and (= |ULTIMATE.start_main_~p~0#1| 1) .cse0 (<= 1 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) .cse1 (<= |ULTIMATE.start_main_~x~0#1| 2) .cse2) (and (= |ULTIMATE.start_main_~y~0#1| (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) .cse0 (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~a~0#1|) .cse1 (= (+ |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|) 0) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|) (= (+ |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~s~0#1|) 1) .cse2))) [2022-10-17 10:34:57,803 INFO L902 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: true [2022-10-17 10:34:57,804 INFO L899 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2022-10-17 10:34:57,804 INFO L899 garLoopResultBuilder]: For program point L43(lines 43 51) no Hoare annotation was computed. [2022-10-17 10:34:57,804 INFO L895 garLoopResultBuilder]: At program point L43-2(lines 35 52) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse2 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse5 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse1 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse3 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse4 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse6 (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|)) (.cse7 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse8 (= |ULTIMATE.start_main_~s~0#1| 1))) (or (and .cse0 .cse1 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8) (and (not (< |ULTIMATE.start_main_~b~0#1| 0)) (not (= |ULTIMATE.start_main_~b~0#1| 0)) (= |ULTIMATE.start_main_~y~0#1| (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) .cse0 .cse2 .cse4 (= (+ |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|) 0) .cse5 .cse6 (= (+ |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~s~0#1|) 1)) (and (= |ULTIMATE.start_main_~p~0#1| 1) .cse1 (<= |ULTIMATE.start_main_~b~0#1| 1) (= (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|) .cse3 (<= 1 |ULTIMATE.start_main_~a~0#1|) .cse4 .cse6 .cse7 .cse8))) [2022-10-17 10:34:57,804 INFO L895 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (let ((.cse1 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse2 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse4 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse8 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse9 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse0 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse3 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse5 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse6 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse7 (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9) (and (= |ULTIMATE.start_main_~p~0#1| 1) .cse1 (<= |ULTIMATE.start_main_~b~0#1| 1) .cse2 .cse4 (<= 1 |ULTIMATE.start_main_~a~0#1|) .cse5 .cse7 .cse8 .cse9) (and (not (< |ULTIMATE.start_main_~b~0#1| 0)) (not (= |ULTIMATE.start_main_~b~0#1| 0)) (= |ULTIMATE.start_main_~y~0#1| (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) .cse0 .cse3 .cse5 (= (+ |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|) 0) .cse6 .cse7 (= (+ |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~s~0#1|) 1)))) [2022-10-17 10:34:57,804 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 7 9) the Hoare annotation is: true [2022-10-17 10:34:57,804 INFO L899 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2022-10-17 10:34:57,804 INFO L899 garLoopResultBuilder]: For program point L8-2(lines 7 9) no Hoare annotation was computed. [2022-10-17 10:34:57,805 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2022-10-17 10:34:57,806 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 10 16) the Hoare annotation is: true [2022-10-17 10:34:57,806 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2022-10-17 10:34:57,806 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2022-10-17 10:34:57,806 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2022-10-17 10:34:57,806 INFO L899 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2022-10-17 10:34:57,807 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2022-10-17 10:34:57,810 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:34:57,813 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 10:34:57,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 10:34:57 BoogieIcfgContainer [2022-10-17 10:34:57,854 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 10:34:57,855 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 10:34:57,855 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 10:34:57,855 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 10:34:57,855 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:34:43" (3/4) ... [2022-10-17 10:34:57,858 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-10-17 10:34:57,867 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-10-17 10:34:57,867 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-10-17 10:34:57,874 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-10-17 10:34:57,875 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-10-17 10:34:57,875 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-10-17 10:34:57,875 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-10-17 10:34:57,932 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/witness.graphml [2022-10-17 10:34:57,932 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 10:34:57,933 INFO L158 Benchmark]: Toolchain (without parser) took 15866.26ms. Allocated memory was 90.2MB in the beginning and 140.5MB in the end (delta: 50.3MB). Free memory was 53.6MB in the beginning and 69.6MB in the end (delta: -16.0MB). Peak memory consumption was 33.7MB. Max. memory is 16.1GB. [2022-10-17 10:34:57,933 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 90.2MB. Free memory is still 69.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:34:57,934 INFO L158 Benchmark]: CACSL2BoogieTranslator took 403.13ms. Allocated memory is still 90.2MB. Free memory was 53.4MB in the beginning and 65.9MB in the end (delta: -12.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 10:34:57,934 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.55ms. Allocated memory is still 90.2MB. Free memory was 65.9MB in the beginning and 64.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:34:57,935 INFO L158 Benchmark]: Boogie Preprocessor took 46.55ms. Allocated memory is still 90.2MB. Free memory was 64.3MB in the beginning and 63.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 10:34:57,936 INFO L158 Benchmark]: RCFGBuilder took 451.73ms. Allocated memory is still 90.2MB. Free memory was 63.2MB in the beginning and 52.4MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-10-17 10:34:57,937 INFO L158 Benchmark]: TraceAbstraction took 14823.79ms. Allocated memory was 90.2MB in the beginning and 140.5MB in the end (delta: 50.3MB). Free memory was 51.8MB in the beginning and 72.8MB in the end (delta: -21.0MB). Peak memory consumption was 66.2MB. Max. memory is 16.1GB. [2022-10-17 10:34:57,937 INFO L158 Benchmark]: Witness Printer took 77.29ms. Allocated memory is still 140.5MB. Free memory was 72.8MB in the beginning and 69.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 10:34:57,940 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 90.2MB. Free memory is still 69.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 403.13ms. Allocated memory is still 90.2MB. Free memory was 53.4MB in the beginning and 65.9MB in the end (delta: -12.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.55ms. Allocated memory is still 90.2MB. Free memory was 65.9MB in the beginning and 64.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 46.55ms. Allocated memory is still 90.2MB. Free memory was 64.3MB in the beginning and 63.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 451.73ms. Allocated memory is still 90.2MB. Free memory was 63.2MB in the beginning and 52.4MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 14823.79ms. Allocated memory was 90.2MB in the beginning and 140.5MB in the end (delta: 50.3MB). Free memory was 51.8MB in the beginning and 72.8MB in the end (delta: -21.0MB). Peak memory consumption was 66.2MB. Max. memory is 16.1GB. * Witness Printer took 77.29ms. Allocated memory is still 140.5MB. Free memory was 72.8MB in the beginning and 69.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 14.7s, OverallIterations: 10, TraceHistogramMax: 7, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 244 SdHoareTripleChecker+Valid, 4.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 197 mSDsluCounter, 1160 SdHoareTripleChecker+Invalid, 3.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 837 mSDsCounter, 270 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1485 IncrementalHoareTripleChecker+Invalid, 1756 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 270 mSolverCounterUnsat, 323 mSDtfsCounter, 1485 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 673 GetRequests, 562 SyntacticMatches, 12 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=92occurred in iteration=8, InterpolantAutomatonStates: 83, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 39 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 68 PreInvPairs, 93 NumberOfFragments, 808 HoareAnnotationTreeSize, 68 FomulaSimplifications, 177 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 15 FomulaSimplificationsInter, 2111 FormulaSimplificationTreeSizeReductionInter, 2.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 447 NumberOfCodeBlocks, 447 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 657 ConstructedInterpolants, 0 QuantifiedInterpolants, 2316 SizeOfPredicates, 34 NumberOfNonLiveVariables, 1102 ConjunctsInSsa, 176 ConjunctsInUnsatCore, 14 InterpolantComputations, 5 PerfectInterpolantSequences, 706/790 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((((((((y <= 2 && 1 <= y) && b == y) && r == 0) && q == 0) && 1 <= x) && a == x) && r * y + p * x == a) && x <= 2) && s == 1) || (((((((((!(b < 0) && !(b == 0)) && y == a + b) && y <= 2) && r == 0) && 1 <= x) && p + q == 0) && a == x) && r * y + p * x == a) && r + s == 1)) || (((((((((p == 1 && 1 <= y) && b <= 1) && s * y + q * x == b) && q == 0) && 1 <= a) && 1 <= x) && r * y + p * x == a) && x <= 2) && s == 1) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-10-17 10:34:57,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e30016-aeec-42e9-a97d-8e15ec2517b9/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE