./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro --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 bda512f5ab4e84c08e80fd02a1c07c8fba5ca60aa45d55edfde2cc268dd1288e --- 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-8393723 [2022-11-18 21:09:36,555 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 21:09:36,558 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 21:09:36,605 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 21:09:36,608 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 21:09:36,612 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 21:09:36,615 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 21:09:36,621 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 21:09:36,624 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 21:09:36,631 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 21:09:36,632 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 21:09:36,635 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 21:09:36,636 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 21:09:36,639 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 21:09:36,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 21:09:36,644 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 21:09:36,646 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 21:09:36,647 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 21:09:36,649 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 21:09:36,661 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 21:09:36,664 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 21:09:36,665 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 21:09:36,668 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 21:09:36,669 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 21:09:36,673 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 21:09:36,673 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 21:09:36,674 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 21:09:36,675 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 21:09:36,675 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 21:09:36,676 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 21:09:36,677 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 21:09:36,678 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 21:09:36,679 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 21:09:36,680 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 21:09:36,681 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 21:09:36,681 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 21:09:36,682 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 21:09:36,682 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 21:09:36,683 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 21:09:36,684 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 21:09:36,685 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 21:09:36,688 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 21:09:36,733 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 21:09:36,733 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 21:09:36,734 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 21:09:36,734 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 21:09:36,735 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 21:09:36,736 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 21:09:36,736 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 21:09:36,736 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 21:09:36,737 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 21:09:36,737 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 21:09:36,738 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 21:09:36,738 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 21:09:36,739 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 21:09:36,739 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 21:09:36,739 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 21:09:36,739 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 21:09:36,740 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 21:09:36,740 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 21:09:36,740 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 21:09:36,740 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 21:09:36,740 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 21:09:36,741 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 21:09:36,741 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 21:09:36,741 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 21:09:36,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:09:36,742 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 21:09:36,742 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 21:09:36,744 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 21:09:36,744 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 21:09:36,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 21:09:36,744 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 21:09:36,745 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 21:09:36,745 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 21:09:36,745 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_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bda512f5ab4e84c08e80fd02a1c07c8fba5ca60aa45d55edfde2cc268dd1288e [2022-11-18 21:09:37,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 21:09:37,111 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 21:09:37,114 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 21:09:37,116 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 21:09:37,117 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 21:09:37,119 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c [2022-11-18 21:09:37,222 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/data/97d8bc2f1/e200eac559284ae0924757bc4e8375d8/FLAGaf63379e9 [2022-11-18 21:09:37,906 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 21:09:37,907 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c [2022-11-18 21:09:37,926 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/data/97d8bc2f1/e200eac559284ae0924757bc4e8375d8/FLAGaf63379e9 [2022-11-18 21:09:37,944 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/data/97d8bc2f1/e200eac559284ae0924757bc4e8375d8 [2022-11-18 21:09:37,947 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 21:09:37,949 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 21:09:37,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 21:09:37,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 21:09:37,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 21:09:37,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:09:37" (1/1) ... [2022-11-18 21:09:37,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7843ba80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:37, skipping insertion in model container [2022-11-18 21:09:37,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:09:37" (1/1) ... [2022-11-18 21:09:37,969 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 21:09:37,991 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 21:09:38,295 WARN L234 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_45ea5e10-23b3-4c02-8159-c52e2249e9bd/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c[490,503] [2022-11-18 21:09:38,342 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:09:38,353 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 21:09:38,374 WARN L234 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_45ea5e10-23b3-4c02-8159-c52e2249e9bd/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c[490,503] [2022-11-18 21:09:38,397 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:09:38,417 INFO L208 MainTranslator]: Completed translation [2022-11-18 21:09:38,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:38 WrapperNode [2022-11-18 21:09:38,418 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 21:09:38,419 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 21:09:38,419 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 21:09:38,419 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 21:09:38,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:38" (1/1) ... [2022-11-18 21:09:38,438 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:38" (1/1) ... [2022-11-18 21:09:38,470 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 80 [2022-11-18 21:09:38,471 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 21:09:38,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 21:09:38,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 21:09:38,472 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 21:09:38,483 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:38" (1/1) ... [2022-11-18 21:09:38,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:38" (1/1) ... [2022-11-18 21:09:38,496 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:38" (1/1) ... [2022-11-18 21:09:38,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:38" (1/1) ... [2022-11-18 21:09:38,499 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:38" (1/1) ... [2022-11-18 21:09:38,503 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:38" (1/1) ... [2022-11-18 21:09:38,505 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:38" (1/1) ... [2022-11-18 21:09:38,506 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:38" (1/1) ... [2022-11-18 21:09:38,522 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 21:09:38,523 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 21:09:38,523 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 21:09:38,523 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 21:09:38,527 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:38" (1/1) ... [2022-11-18 21:09:38,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:09:38,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:09:38,570 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 21:09:38,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 21:09:38,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 21:09:38,642 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-18 21:09:38,642 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-18 21:09:38,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 21:09:38,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 21:09:38,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 21:09:38,643 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-18 21:09:38,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-18 21:09:38,742 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 21:09:38,746 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 21:09:39,033 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 21:09:39,068 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 21:09:39,069 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-18 21:09:39,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:09:39 BoogieIcfgContainer [2022-11-18 21:09:39,071 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 21:09:39,074 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 21:09:39,075 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 21:09:39,079 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 21:09:39,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:09:37" (1/3) ... [2022-11-18 21:09:39,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c94ab09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:09:39, skipping insertion in model container [2022-11-18 21:09:39,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:38" (2/3) ... [2022-11-18 21:09:39,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c94ab09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:09:39, skipping insertion in model container [2022-11-18 21:09:39,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:09:39" (3/3) ... [2022-11-18 21:09:39,088 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd3-ll_valuebound2.c [2022-11-18 21:09:39,141 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 21:09:39,141 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 21:09:39,245 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 21:09:39,260 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;@70904522, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 21:09:39,261 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 21:09:39,266 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-18 21:09:39,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-18 21:09:39,277 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:09:39,278 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] [2022-11-18 21:09:39,279 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:09:39,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:39,289 INFO L85 PathProgramCache]: Analyzing trace with hash 872320404, now seen corresponding path program 1 times [2022-11-18 21:09:39,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:39,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457886662] [2022-11-18 21:09:39,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:39,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:39,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:39,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:39,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457886662] [2022-11-18 21:09:39,518 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 21:09:39,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39511533] [2022-11-18 21:09:39,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:39,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:39,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:09:39,525 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:09:39,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 21:09:39,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:39,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-18 21:09:39,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:09:39,716 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:09:39,717 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:09:39,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39511533] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:09:39,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:09:39,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 21:09:39,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069153587] [2022-11-18 21:09:39,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:09:39,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 21:09:39,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:39,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 21:09:39,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 21:09:39,797 INFO L87 Difference]: Start difference. First operand has 35 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 21:09:39,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:09:39,861 INFO L93 Difference]: Finished difference Result 67 states and 109 transitions. [2022-11-18 21:09:39,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 21:09:39,866 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2022-11-18 21:09:39,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:09:39,876 INFO L225 Difference]: With dead ends: 67 [2022-11-18 21:09:39,876 INFO L226 Difference]: Without dead ends: 31 [2022-11-18 21:09:39,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 21:09:39,888 INFO L413 NwaCegarLoop]: 44 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, 44 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 [2022-11-18 21:09:39,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 21:09:39,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-18 21:09:39,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-18 21:09:39,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-18 21:09:39,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2022-11-18 21:09:39,957 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 29 [2022-11-18 21:09:39,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:09:39,959 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2022-11-18 21:09:39,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 21:09:39,961 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2022-11-18 21:09:39,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-18 21:09:39,964 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:09:39,965 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, 1] [2022-11-18 21:09:39,983 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 21:09:40,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:40,173 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:09:40,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:40,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1714405113, now seen corresponding path program 1 times [2022-11-18 21:09:40,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:40,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927876670] [2022-11-18 21:09:40,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:40,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:40,231 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:09:40,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1249002557] [2022-11-18 21:09:40,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:40,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:40,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:09:40,236 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:09:40,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 21:09:40,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:40,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 21:09:40,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:09:40,509 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 21:09:40,511 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:09:40,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:40,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927876670] [2022-11-18 21:09:40,514 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:09:40,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249002557] [2022-11-18 21:09:40,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249002557] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:09:40,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:09:40,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 21:09:40,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694349275] [2022-11-18 21:09:40,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:09:40,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:09:40,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:40,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:09:40,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 21:09:40,525 INFO L87 Difference]: Start difference. First operand 31 states and 40 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 21:09:40,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:09:40,720 INFO L93 Difference]: Finished difference Result 50 states and 65 transitions. [2022-11-18 21:09:40,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 21:09:40,721 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 30 [2022-11-18 21:09:40,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:09:40,723 INFO L225 Difference]: With dead ends: 50 [2022-11-18 21:09:40,723 INFO L226 Difference]: Without dead ends: 43 [2022-11-18 21:09:40,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:09:40,726 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 32 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 21:09:40,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 113 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 21:09:40,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-18 21:09:40,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 33. [2022-11-18 21:09:40,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-18 21:09:40,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2022-11-18 21:09:40,746 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 30 [2022-11-18 21:09:40,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:09:40,747 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2022-11-18 21:09:40,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 21:09:40,748 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2022-11-18 21:09:40,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-18 21:09:40,749 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:09:40,749 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, 1, 1, 1, 1] [2022-11-18 21:09:40,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 21:09:40,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:40,960 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:09:40,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:40,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1825736765, now seen corresponding path program 1 times [2022-11-18 21:09:40,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:40,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974870354] [2022-11-18 21:09:40,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:40,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:40,994 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:09:41,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1674358130] [2022-11-18 21:09:41,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:41,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:41,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:09:41,003 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:09:41,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 21:09:41,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:41,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-18 21:09:41,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:09:41,528 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 21:09:41,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:09:41,867 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 21:09:41,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:41,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974870354] [2022-11-18 21:09:41,868 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:09:41,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674358130] [2022-11-18 21:09:41,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674358130] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 21:09:41,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:09:41,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2022-11-18 21:09:41,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320525469] [2022-11-18 21:09:41,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:09:41,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:09:41,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:41,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:09:41,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-11-18 21:09:41,873 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 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) [2022-11-18 21:09:42,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:09:42,052 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2022-11-18 21:09:42,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 21:09:42,053 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 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 33 [2022-11-18 21:09:42,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:09:42,057 INFO L225 Difference]: With dead ends: 49 [2022-11-18 21:09:42,057 INFO L226 Difference]: Without dead ends: 47 [2022-11-18 21:09:42,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2022-11-18 21:09:42,062 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 22 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 21:09:42,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 147 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 21:09:42,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-18 21:09:42,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2022-11-18 21:09:42,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 29 states have (on average 1.206896551724138) internal successors, (35), 30 states have internal predecessors, (35), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-18 21:09:42,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2022-11-18 21:09:42,083 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 33 [2022-11-18 21:09:42,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:09:42,084 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2022-11-18 21:09:42,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 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) [2022-11-18 21:09:42,084 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2022-11-18 21:09:42,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-18 21:09:42,086 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:09:42,086 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, 1] [2022-11-18 21:09:42,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 21:09:42,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-18 21:09:42,296 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:09:42,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:42,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1547103247, now seen corresponding path program 1 times [2022-11-18 21:09:42,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:42,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760410830] [2022-11-18 21:09:42,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:42,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:42,347 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:09:42,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [90664144] [2022-11-18 21:09:42,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:42,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:42,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:09:42,353 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:09:42,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 21:09:42,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:42,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 21:09:42,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:09:42,594 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 21:09:42,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:09:42,777 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 21:09:42,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:42,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760410830] [2022-11-18 21:09:42,779 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:09:42,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90664144] [2022-11-18 21:09:42,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90664144] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:09:42,780 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:09:42,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2022-11-18 21:09:42,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923045195] [2022-11-18 21:09:42,781 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:09:42,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 21:09:42,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:42,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 21:09:42,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-18 21:09:42,783 INFO L87 Difference]: Start difference. First operand 46 states and 60 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 21:09:43,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:09:43,084 INFO L93 Difference]: Finished difference Result 99 states and 139 transitions. [2022-11-18 21:09:43,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 21:09:43,085 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2022-11-18 21:09:43,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:09:43,087 INFO L225 Difference]: With dead ends: 99 [2022-11-18 21:09:43,087 INFO L226 Difference]: Without dead ends: 92 [2022-11-18 21:09:43,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 57 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-11-18 21:09:43,089 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 61 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:09:43,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 209 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 21:09:43,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-11-18 21:09:43,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 67. [2022-11-18 21:09:43,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 47 states have internal predecessors, (58), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-18 21:09:43,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 91 transitions. [2022-11-18 21:09:43,115 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 91 transitions. Word has length 35 [2022-11-18 21:09:43,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:09:43,116 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 91 transitions. [2022-11-18 21:09:43,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 21:09:43,116 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 91 transitions. [2022-11-18 21:09:43,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-18 21:09:43,117 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:09:43,118 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, 1, 1, 1, 1] [2022-11-18 21:09:43,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 21:09:43,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:43,325 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:09:43,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:43,325 INFO L85 PathProgramCache]: Analyzing trace with hash -720434099, now seen corresponding path program 1 times [2022-11-18 21:09:43,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:43,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344203457] [2022-11-18 21:09:43,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:43,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:43,360 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:09:43,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1120679094] [2022-11-18 21:09:43,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:43,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:43,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:09:43,371 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:09:43,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 21:09:43,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:43,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-18 21:09:43,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:09:44,100 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 21:09:44,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:09:44,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:44,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344203457] [2022-11-18 21:09:44,521 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:09:44,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120679094] [2022-11-18 21:09:44,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120679094] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:09:44,522 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:09:44,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2022-11-18 21:09:44,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238371091] [2022-11-18 21:09:44,522 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 21:09:44,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 21:09:44,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:44,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 21:09:44,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2022-11-18 21:09:44,524 INFO L87 Difference]: Start difference. First operand 67 states and 91 transitions. Second operand has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 11 states have internal predecessors, (21), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-18 21:09:44,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:09:44,970 INFO L93 Difference]: Finished difference Result 82 states and 110 transitions. [2022-11-18 21:09:44,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 21:09:44,971 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 11 states have internal predecessors, (21), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 38 [2022-11-18 21:09:44,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:09:44,973 INFO L225 Difference]: With dead ends: 82 [2022-11-18 21:09:44,973 INFO L226 Difference]: Without dead ends: 80 [2022-11-18 21:09:44,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2022-11-18 21:09:44,975 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 66 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 21:09:44,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 135 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 295 Invalid, 0 Unknown, 41 Unchecked, 0.3s Time] [2022-11-18 21:09:44,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-18 21:09:44,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 71. [2022-11-18 21:09:44,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 50 states have internal predecessors, (61), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-18 21:09:45,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 94 transitions. [2022-11-18 21:09:45,005 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 94 transitions. Word has length 38 [2022-11-18 21:09:45,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:09:45,006 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 94 transitions. [2022-11-18 21:09:45,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 11 states have internal predecessors, (21), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-18 21:09:45,006 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 94 transitions. [2022-11-18 21:09:45,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-18 21:09:45,017 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:09:45,017 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:09:45,031 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-18 21:09:45,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:45,225 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:09:45,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:45,225 INFO L85 PathProgramCache]: Analyzing trace with hash -376152117, now seen corresponding path program 1 times [2022-11-18 21:09:45,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:45,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162879048] [2022-11-18 21:09:45,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:45,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:45,239 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:09:45,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1379513226] [2022-11-18 21:09:45,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:45,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:45,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:09:45,241 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:09:45,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 21:09:45,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:45,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 21:09:45,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:09:45,448 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 21:09:45,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:09:45,657 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 21:09:45,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:45,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162879048] [2022-11-18 21:09:45,658 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:09:45,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379513226] [2022-11-18 21:09:45,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379513226] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:09:45,659 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:09:45,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 13 [2022-11-18 21:09:45,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742503124] [2022-11-18 21:09:45,659 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:09:45,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 21:09:45,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:45,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 21:09:45,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-18 21:09:45,663 INFO L87 Difference]: Start difference. First operand 71 states and 94 transitions. Second operand has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 10 states have internal predecessors, (36), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-18 21:09:45,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:09:45,972 INFO L93 Difference]: Finished difference Result 107 states and 143 transitions. [2022-11-18 21:09:45,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 21:09:45,975 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 10 states have internal predecessors, (36), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 38 [2022-11-18 21:09:45,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:09:45,977 INFO L225 Difference]: With dead ends: 107 [2022-11-18 21:09:45,977 INFO L226 Difference]: Without dead ends: 105 [2022-11-18 21:09:45,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-11-18 21:09:45,978 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 54 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 71 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:09:45,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 261 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 183 Invalid, 0 Unknown, 71 Unchecked, 0.2s Time] [2022-11-18 21:09:45,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-11-18 21:09:46,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 101. [2022-11-18 21:09:46,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 70 states have (on average 1.2571428571428571) internal successors, (88), 71 states have internal predecessors, (88), 25 states have call successors, (25), 5 states have call predecessors, (25), 5 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-11-18 21:09:46,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 137 transitions. [2022-11-18 21:09:46,005 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 137 transitions. Word has length 38 [2022-11-18 21:09:46,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:09:46,006 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 137 transitions. [2022-11-18 21:09:46,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 10 states have internal predecessors, (36), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-18 21:09:46,006 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 137 transitions. [2022-11-18 21:09:46,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-18 21:09:46,008 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:09:46,008 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, 1, 1, 1, 1] [2022-11-18 21:09:46,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 21:09:46,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:46,215 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:09:46,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:46,216 INFO L85 PathProgramCache]: Analyzing trace with hash 279172547, now seen corresponding path program 1 times [2022-11-18 21:09:46,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:46,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153183362] [2022-11-18 21:09:46,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:46,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:46,251 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:09:46,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1754594346] [2022-11-18 21:09:46,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:46,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:46,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:09:46,265 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:09:46,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 21:09:46,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:46,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 21:09:46,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:09:46,966 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 21:09:46,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:09:47,240 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-18 21:09:47,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:47,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153183362] [2022-11-18 21:09:47,241 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:09:47,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754594346] [2022-11-18 21:09:47,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754594346] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 21:09:47,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:09:47,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 14 [2022-11-18 21:09:47,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577248467] [2022-11-18 21:09:47,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:09:47,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 21:09:47,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:47,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 21:09:47,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-11-18 21:09:47,244 INFO L87 Difference]: Start difference. First operand 101 states and 137 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 21:09:47,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:09:47,367 INFO L93 Difference]: Finished difference Result 147 states and 209 transitions. [2022-11-18 21:09:47,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 21:09:47,368 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 43 [2022-11-18 21:09:47,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:09:47,370 INFO L225 Difference]: With dead ends: 147 [2022-11-18 21:09:47,370 INFO L226 Difference]: Without dead ends: 145 [2022-11-18 21:09:47,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-18 21:09:47,372 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 7 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 21:09:47,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 124 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 21:09:47,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-11-18 21:09:47,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 139. [2022-11-18 21:09:47,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 87 states have (on average 1.2873563218390804) internal successors, (112), 88 states have internal predecessors, (112), 45 states have call successors, (45), 6 states have call predecessors, (45), 6 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-11-18 21:09:47,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 201 transitions. [2022-11-18 21:09:47,416 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 201 transitions. Word has length 43 [2022-11-18 21:09:47,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:09:47,417 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 201 transitions. [2022-11-18 21:09:47,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 21:09:47,417 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 201 transitions. [2022-11-18 21:09:47,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-18 21:09:47,418 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:09:47,418 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2022-11-18 21:09:47,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 21:09:47,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:47,626 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:09:47,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:47,626 INFO L85 PathProgramCache]: Analyzing trace with hash -2141198011, now seen corresponding path program 1 times [2022-11-18 21:09:47,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:47,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066012381] [2022-11-18 21:09:47,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:47,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:47,644 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:09:47,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1759630923] [2022-11-18 21:09:47,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:47,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:47,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:09:47,650 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:09:47,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 21:09:47,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:47,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-18 21:09:47,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:09:47,936 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 21:09:47,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:09:48,154 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 21:09:48,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:48,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066012381] [2022-11-18 21:09:48,154 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:09:48,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759630923] [2022-11-18 21:09:48,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759630923] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:09:48,155 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:09:48,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 13 [2022-11-18 21:09:48,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975794015] [2022-11-18 21:09:48,156 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:09:48,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 21:09:48,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:48,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 21:09:48,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-18 21:09:48,158 INFO L87 Difference]: Start difference. First operand 139 states and 201 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-18 21:09:49,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:09:49,135 INFO L93 Difference]: Finished difference Result 243 states and 350 transitions. [2022-11-18 21:09:49,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 21:09:49,136 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 43 [2022-11-18 21:09:49,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:09:49,140 INFO L225 Difference]: With dead ends: 243 [2022-11-18 21:09:49,141 INFO L226 Difference]: Without dead ends: 241 [2022-11-18 21:09:49,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2022-11-18 21:09:49,142 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 75 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 76 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 21:09:49,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 299 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 366 Invalid, 0 Unknown, 76 Unchecked, 0.6s Time] [2022-11-18 21:09:49,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-11-18 21:09:49,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 198. [2022-11-18 21:09:49,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 125 states have (on average 1.272) internal successors, (159), 133 states have internal predecessors, (159), 64 states have call successors, (64), 8 states have call predecessors, (64), 8 states have return successors, (63), 56 states have call predecessors, (63), 63 states have call successors, (63) [2022-11-18 21:09:49,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 286 transitions. [2022-11-18 21:09:49,247 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 286 transitions. Word has length 43 [2022-11-18 21:09:49,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:09:49,248 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 286 transitions. [2022-11-18 21:09:49,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-18 21:09:49,248 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 286 transitions. [2022-11-18 21:09:49,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-18 21:09:49,249 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:09:49,249 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:09:49,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 21:09:49,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:49,460 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:09:49,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:49,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1796916029, now seen corresponding path program 2 times [2022-11-18 21:09:49,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:49,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544440483] [2022-11-18 21:09:49,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:49,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:49,485 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:09:49,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [475784720] [2022-11-18 21:09:49,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:09:49,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:49,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:09:49,507 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:09:49,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 21:09:49,586 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 21:09:49,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:09:49,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 21:09:49,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:09:49,640 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 21:09:49,641 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:09:49,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:49,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544440483] [2022-11-18 21:09:49,641 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:09:49,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475784720] [2022-11-18 21:09:49,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475784720] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:09:49,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:09:49,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 21:09:49,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223428726] [2022-11-18 21:09:49,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:09:49,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 21:09:49,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:49,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 21:09:49,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 21:09:49,649 INFO L87 Difference]: Start difference. First operand 198 states and 286 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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) [2022-11-18 21:09:49,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:09:49,845 INFO L93 Difference]: Finished difference Result 254 states and 362 transitions. [2022-11-18 21:09:49,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 21:09:49,846 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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 43 [2022-11-18 21:09:49,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:09:49,849 INFO L225 Difference]: With dead ends: 254 [2022-11-18 21:09:49,849 INFO L226 Difference]: Without dead ends: 158 [2022-11-18 21:09:49,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:09:49,851 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 19 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 21:09:49,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 139 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 21:09:49,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-11-18 21:09:49,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 133. [2022-11-18 21:09:49,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 83 states have (on average 1.2048192771084338) internal successors, (100), 88 states have internal predecessors, (100), 41 states have call successors, (41), 8 states have call predecessors, (41), 8 states have return successors, (40), 36 states have call predecessors, (40), 40 states have call successors, (40) [2022-11-18 21:09:49,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 181 transitions. [2022-11-18 21:09:49,922 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 181 transitions. Word has length 43 [2022-11-18 21:09:49,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:09:49,922 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 181 transitions. [2022-11-18 21:09:49,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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) [2022-11-18 21:09:49,923 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 181 transitions. [2022-11-18 21:09:49,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-18 21:09:49,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:09:49,924 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, 1, 1, 1] [2022-11-18 21:09:49,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 21:09:50,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-18 21:09:50,131 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:09:50,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:50,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1189241395, now seen corresponding path program 1 times [2022-11-18 21:09:50,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:50,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628111799] [2022-11-18 21:09:50,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:50,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:50,147 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:09:50,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [666513256] [2022-11-18 21:09:50,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:50,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:50,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:09:50,149 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:09:50,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 21:09:50,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:50,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 21:09:50,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:09:50,341 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 21:09:50,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:09:50,660 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-18 21:09:50,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:50,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628111799] [2022-11-18 21:09:50,660 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:09:50,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666513256] [2022-11-18 21:09:50,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666513256] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 21:09:50,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:09:50,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2022-11-18 21:09:50,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825568188] [2022-11-18 21:09:50,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:09:50,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 21:09:50,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:50,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 21:09:50,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-18 21:09:50,664 INFO L87 Difference]: Start difference. First operand 133 states and 181 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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) [2022-11-18 21:09:50,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:09:50,831 INFO L93 Difference]: Finished difference Result 139 states and 186 transitions. [2022-11-18 21:09:50,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 21:09:50,832 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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 48 [2022-11-18 21:09:50,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:09:50,835 INFO L225 Difference]: With dead ends: 139 [2022-11-18 21:09:50,835 INFO L226 Difference]: Without dead ends: 137 [2022-11-18 21:09:50,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 85 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-18 21:09:50,837 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 8 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 21:09:50,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 122 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 21:09:50,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-11-18 21:09:50,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2022-11-18 21:09:50,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 86 states have (on average 1.197674418604651) internal successors, (103), 91 states have internal predecessors, (103), 41 states have call successors, (41), 9 states have call predecessors, (41), 9 states have return successors, (40), 36 states have call predecessors, (40), 40 states have call successors, (40) [2022-11-18 21:09:50,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 184 transitions. [2022-11-18 21:09:50,925 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 184 transitions. Word has length 48 [2022-11-18 21:09:50,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:09:50,926 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 184 transitions. [2022-11-18 21:09:50,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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) [2022-11-18 21:09:50,926 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 184 transitions. [2022-11-18 21:09:50,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-18 21:09:50,929 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:09:50,929 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2022-11-18 21:09:50,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 21:09:51,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 21:09:51,136 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:09:51,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:51,137 INFO L85 PathProgramCache]: Analyzing trace with hash -828341661, now seen corresponding path program 1 times [2022-11-18 21:09:51,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:51,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887677534] [2022-11-18 21:09:51,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:51,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:51,161 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:09:51,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1148036003] [2022-11-18 21:09:51,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:51,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:51,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:09:51,170 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:09:51,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 21:09:51,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:51,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-18 21:09:51,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:09:52,435 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 13 proven. 20 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-18 21:09:52,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:09:53,513 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-18 21:09:53,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:53,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887677534] [2022-11-18 21:09:53,514 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:09:53,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148036003] [2022-11-18 21:09:53,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148036003] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:09:53,514 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:09:53,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 27 [2022-11-18 21:09:53,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714133491] [2022-11-18 21:09:53,515 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:09:53,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-18 21:09:53,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:53,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-18 21:09:53,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=593, Unknown=0, NotChecked=0, Total=702 [2022-11-18 21:09:53,517 INFO L87 Difference]: Start difference. First operand 137 states and 184 transitions. Second operand has 27 states, 25 states have (on average 1.96) internal successors, (49), 24 states have internal predecessors, (49), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2022-11-18 21:10:01,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:10:01,077 INFO L93 Difference]: Finished difference Result 312 states and 426 transitions. [2022-11-18 21:10:01,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 21:10:01,077 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 1.96) internal successors, (49), 24 states have internal predecessors, (49), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 60 [2022-11-18 21:10:01,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:10:01,079 INFO L225 Difference]: With dead ends: 312 [2022-11-18 21:10:01,079 INFO L226 Difference]: Without dead ends: 190 [2022-11-18 21:10:01,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=476, Invalid=1974, Unknown=0, NotChecked=0, Total=2450 [2022-11-18 21:10:01,081 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 218 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 913 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-18 21:10:01,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 192 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 913 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-18 21:10:01,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-11-18 21:10:01,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 169. [2022-11-18 21:10:01,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 108 states have (on average 1.1851851851851851) internal successors, (128), 113 states have internal predecessors, (128), 49 states have call successors, (49), 11 states have call predecessors, (49), 11 states have return successors, (48), 44 states have call predecessors, (48), 48 states have call successors, (48) [2022-11-18 21:10:01,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 225 transitions. [2022-11-18 21:10:01,196 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 225 transitions. Word has length 60 [2022-11-18 21:10:01,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:10:01,196 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 225 transitions. [2022-11-18 21:10:01,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 1.96) internal successors, (49), 24 states have internal predecessors, (49), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2022-11-18 21:10:01,197 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 225 transitions. [2022-11-18 21:10:01,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-18 21:10:01,198 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:10:01,198 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:10:01,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 21:10:01,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 21:10:01,404 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:10:01,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:01,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1439093215, now seen corresponding path program 1 times [2022-11-18 21:10:01,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:01,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244967920] [2022-11-18 21:10:01,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:01,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:01,417 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:10:01,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2044277504] [2022-11-18 21:10:01,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:01,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:10:01,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:10:01,419 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:10:01,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 21:10:01,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:01,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 21:10:01,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:10:01,646 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 30 proven. 6 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-18 21:10:01,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:10:01,815 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-18 21:10:01,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:10:01,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244967920] [2022-11-18 21:10:01,816 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:10:01,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044277504] [2022-11-18 21:10:01,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044277504] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:10:01,817 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:10:01,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2022-11-18 21:10:01,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557133451] [2022-11-18 21:10:01,817 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:10:01,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 21:10:01,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:10:01,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 21:10:01,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-11-18 21:10:01,819 INFO L87 Difference]: Start difference. First operand 169 states and 225 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 14 states have internal predecessors, (46), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-18 21:10:02,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:10:02,371 INFO L93 Difference]: Finished difference Result 236 states and 310 transitions. [2022-11-18 21:10:02,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 21:10:02,372 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 14 states have internal predecessors, (46), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 68 [2022-11-18 21:10:02,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:10:02,373 INFO L225 Difference]: With dead ends: 236 [2022-11-18 21:10:02,374 INFO L226 Difference]: Without dead ends: 156 [2022-11-18 21:10:02,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2022-11-18 21:10:02,375 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 92 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 21:10:02,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 216 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 21:10:02,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-11-18 21:10:02,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 153. [2022-11-18 21:10:02,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 94 states have (on average 1.148936170212766) internal successors, (108), 97 states have internal predecessors, (108), 47 states have call successors, (47), 11 states have call predecessors, (47), 11 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2022-11-18 21:10:02,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 201 transitions. [2022-11-18 21:10:02,491 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 201 transitions. Word has length 68 [2022-11-18 21:10:02,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:10:02,491 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 201 transitions. [2022-11-18 21:10:02,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 14 states have internal predecessors, (46), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-18 21:10:02,492 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 201 transitions. [2022-11-18 21:10:02,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-18 21:10:02,493 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:10:02,493 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:10:02,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 21:10:02,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 21:10:02,699 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:10:02,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:02,699 INFO L85 PathProgramCache]: Analyzing trace with hash 160585404, now seen corresponding path program 1 times [2022-11-18 21:10:02,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:02,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377661242] [2022-11-18 21:10:02,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:02,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:02,717 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:10:02,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1904340168] [2022-11-18 21:10:02,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:02,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:10:02,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:10:02,725 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:10:02,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 21:10:02,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:02,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 82 conjunts are in the unsatisfiable core [2022-11-18 21:10:02,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:10:04,402 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 36 proven. 29 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-11-18 21:10:04,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:10:16,481 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 30 proven. 26 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-11-18 21:10:16,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:10:16,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377661242] [2022-11-18 21:10:16,482 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:10:16,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904340168] [2022-11-18 21:10:16,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904340168] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:10:16,483 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:10:16,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 16] total 33 [2022-11-18 21:10:16,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803370045] [2022-11-18 21:10:16,483 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:10:16,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-18 21:10:16,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:10:16,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-18 21:10:16,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=905, Unknown=0, NotChecked=0, Total=1056 [2022-11-18 21:10:16,486 INFO L87 Difference]: Start difference. First operand 153 states and 201 transitions. Second operand has 33 states, 31 states have (on average 2.0) internal successors, (62), 31 states have internal predecessors, (62), 9 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) [2022-11-18 21:10:26,288 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 [] [2022-11-18 21:10:42,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-18 21:10:50,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-18 21:11:09,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-18 21:11:21,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:11:21,983 INFO L93 Difference]: Finished difference Result 315 states and 442 transitions. [2022-11-18 21:11:21,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-11-18 21:11:21,984 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 2.0) internal successors, (62), 31 states have internal predecessors, (62), 9 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) Word has length 87 [2022-11-18 21:11:21,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:11:21,987 INFO L225 Difference]: With dead ends: 315 [2022-11-18 21:11:21,987 INFO L226 Difference]: Without dead ends: 311 [2022-11-18 21:11:21,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 139 SyntacticMatches, 2 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2497 ImplicationChecksByTransitivity, 40.2s TimeCoverageRelationStatistics Valid=1455, Invalid=6735, Unknown=0, NotChecked=0, Total=8190 [2022-11-18 21:11:21,992 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 447 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 2599 mSolverCounterSat, 589 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 3192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 2599 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.9s IncrementalHoareTripleChecker+Time [2022-11-18 21:11:21,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 430 Invalid, 3192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 2599 Invalid, 4 Unknown, 0 Unchecked, 30.9s Time] [2022-11-18 21:11:21,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2022-11-18 21:11:22,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 278. [2022-11-18 21:11:22,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 170 states have (on average 1.1823529411764706) internal successors, (201), 172 states have internal predecessors, (201), 90 states have call successors, (90), 17 states have call predecessors, (90), 17 states have return successors, (89), 88 states have call predecessors, (89), 89 states have call successors, (89) [2022-11-18 21:11:22,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 380 transitions. [2022-11-18 21:11:22,381 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 380 transitions. Word has length 87 [2022-11-18 21:11:22,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:11:22,382 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 380 transitions. [2022-11-18 21:11:22,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 2.0) internal successors, (62), 31 states have internal predecessors, (62), 9 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) [2022-11-18 21:11:22,382 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 380 transitions. [2022-11-18 21:11:22,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-18 21:11:22,383 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:11:22,384 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:11:22,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 21:11:22,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:11:22,590 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:11:22,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:11:22,591 INFO L85 PathProgramCache]: Analyzing trace with hash -275231594, now seen corresponding path program 1 times [2022-11-18 21:11:22,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:11:22,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121681871] [2022-11-18 21:11:22,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:11:22,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:11:22,609 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:11:22,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1079862152] [2022-11-18 21:11:22,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:11:22,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:11:22,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:11:22,628 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:11:22,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 21:11:22,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:11:22,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 21:11:22,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:11:22,946 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 90 proven. 15 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-11-18 21:11:22,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:11:23,265 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 28 proven. 17 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-18 21:11:23,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:11:23,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121681871] [2022-11-18 21:11:23,265 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:11:23,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079862152] [2022-11-18 21:11:23,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079862152] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:11:23,266 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:11:23,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2022-11-18 21:11:23,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395127144] [2022-11-18 21:11:23,266 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:11:23,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 21:11:23,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:11:23,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 21:11:23,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2022-11-18 21:11:23,268 INFO L87 Difference]: Start difference. First operand 278 states and 380 transitions. Second operand has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 7 states have call predecessors, (28), 8 states have call successors, (28) [2022-11-18 21:11:24,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:11:24,272 INFO L93 Difference]: Finished difference Result 467 states and 650 transitions. [2022-11-18 21:11:24,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 21:11:24,273 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 7 states have call predecessors, (28), 8 states have call successors, (28) Word has length 90 [2022-11-18 21:11:24,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:11:24,279 INFO L225 Difference]: With dead ends: 467 [2022-11-18 21:11:24,279 INFO L226 Difference]: Without dead ends: 311 [2022-11-18 21:11:24,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 161 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=176, Invalid=694, Unknown=0, NotChecked=0, Total=870 [2022-11-18 21:11:24,281 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 52 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 21:11:24,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 307 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 21:11:24,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2022-11-18 21:11:24,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 305. [2022-11-18 21:11:24,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 181 states have (on average 1.1767955801104972) internal successors, (213), 183 states have internal predecessors, (213), 106 states have call successors, (106), 17 states have call predecessors, (106), 17 states have return successors, (105), 104 states have call predecessors, (105), 105 states have call successors, (105) [2022-11-18 21:11:24,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 424 transitions. [2022-11-18 21:11:24,576 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 424 transitions. Word has length 90 [2022-11-18 21:11:24,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:11:24,577 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 424 transitions. [2022-11-18 21:11:24,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 7 states have call predecessors, (28), 8 states have call successors, (28) [2022-11-18 21:11:24,577 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 424 transitions. [2022-11-18 21:11:24,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-18 21:11:24,579 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:11:24,579 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:11:24,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 21:11:24,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:11:24,786 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:11:24,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:11:24,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1599365144, now seen corresponding path program 1 times [2022-11-18 21:11:24,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:11:24,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958707299] [2022-11-18 21:11:24,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:11:24,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:11:24,821 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:11:24,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [407962410] [2022-11-18 21:11:24,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:11:24,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:11:24,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:11:24,832 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:11:24,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 21:11:24,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:11:24,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 21:11:24,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:11:25,269 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 58 proven. 19 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2022-11-18 21:11:25,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:11:25,672 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 28 proven. 19 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-11-18 21:11:25,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:11:25,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958707299] [2022-11-18 21:11:25,673 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:11:25,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407962410] [2022-11-18 21:11:25,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407962410] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:11:25,673 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:11:25,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-11-18 21:11:25,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177408984] [2022-11-18 21:11:25,674 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:11:25,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 21:11:25,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:11:25,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 21:11:25,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2022-11-18 21:11:25,676 INFO L87 Difference]: Start difference. First operand 305 states and 424 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 8 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (26), 7 states have call predecessors, (26), 8 states have call successors, (26) [2022-11-18 21:11:27,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:11:27,265 INFO L93 Difference]: Finished difference Result 376 states and 518 transitions. [2022-11-18 21:11:27,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 21:11:27,266 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 8 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (26), 7 states have call predecessors, (26), 8 states have call successors, (26) Word has length 90 [2022-11-18 21:11:27,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:11:27,268 INFO L225 Difference]: With dead ends: 376 [2022-11-18 21:11:27,268 INFO L226 Difference]: Without dead ends: 225 [2022-11-18 21:11:27,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 160 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=281, Invalid=979, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 21:11:27,273 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 135 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 21:11:27,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 190 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 21:11:27,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-11-18 21:11:27,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2022-11-18 21:11:27,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 135 states have (on average 1.1777777777777778) internal successors, (159), 137 states have internal predecessors, (159), 78 states have call successors, (78), 11 states have call predecessors, (78), 11 states have return successors, (77), 76 states have call predecessors, (77), 77 states have call successors, (77) [2022-11-18 21:11:27,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 314 transitions. [2022-11-18 21:11:27,492 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 314 transitions. Word has length 90 [2022-11-18 21:11:27,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:11:27,493 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 314 transitions. [2022-11-18 21:11:27,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 8 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (26), 7 states have call predecessors, (26), 8 states have call successors, (26) [2022-11-18 21:11:27,493 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 314 transitions. [2022-11-18 21:11:27,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-18 21:11:27,501 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:11:27,501 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:11:27,508 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-11-18 21:11:27,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 21:11:27,708 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:11:27,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:11:27,709 INFO L85 PathProgramCache]: Analyzing trace with hash 453133023, now seen corresponding path program 2 times [2022-11-18 21:11:27,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:11:27,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458062829] [2022-11-18 21:11:27,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:11:27,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:11:27,736 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:11:27,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [338261871] [2022-11-18 21:11:27,737 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:11:27,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:11:27,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:11:27,738 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:11:27,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 21:11:27,849 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 21:11:27,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:11:27,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 21:11:27,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:11:28,169 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 46 proven. 30 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2022-11-18 21:11:28,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:11:28,556 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 44 proven. 32 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2022-11-18 21:11:28,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:11:28,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458062829] [2022-11-18 21:11:28,557 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:11:28,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338261871] [2022-11-18 21:11:28,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338261871] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:11:28,558 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:11:28,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2022-11-18 21:11:28,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249163197] [2022-11-18 21:11:28,558 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:11:28,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 21:11:28,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:11:28,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 21:11:28,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2022-11-18 21:11:28,560 INFO L87 Difference]: Start difference. First operand 225 states and 314 transitions. Second operand has 21 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 19 states have internal predecessors, (61), 10 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 9 states have call predecessors, (31), 9 states have call successors, (31) [2022-11-18 21:11:30,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:11:30,171 INFO L93 Difference]: Finished difference Result 376 states and 535 transitions. [2022-11-18 21:11:30,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 21:11:30,172 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 19 states have internal predecessors, (61), 10 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 9 states have call predecessors, (31), 9 states have call successors, (31) Word has length 112 [2022-11-18 21:11:30,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:11:30,175 INFO L225 Difference]: With dead ends: 376 [2022-11-18 21:11:30,175 INFO L226 Difference]: Without dead ends: 288 [2022-11-18 21:11:30,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=363, Invalid=1119, Unknown=0, NotChecked=0, Total=1482 [2022-11-18 21:11:30,177 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 132 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 21:11:30,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 340 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 21:11:30,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2022-11-18 21:11:30,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 283. [2022-11-18 21:11:30,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 166 states have (on average 1.1686746987951808) internal successors, (194), 167 states have internal predecessors, (194), 105 states have call successors, (105), 11 states have call predecessors, (105), 11 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2022-11-18 21:11:30,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 403 transitions. [2022-11-18 21:11:30,413 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 403 transitions. Word has length 112 [2022-11-18 21:11:30,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:11:30,414 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 403 transitions. [2022-11-18 21:11:30,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 19 states have internal predecessors, (61), 10 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 9 states have call predecessors, (31), 9 states have call successors, (31) [2022-11-18 21:11:30,414 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 403 transitions. [2022-11-18 21:11:30,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-18 21:11:30,416 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:11:30,416 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:11:30,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-18 21:11:30,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 21:11:30,621 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:11:30,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:11:30,622 INFO L85 PathProgramCache]: Analyzing trace with hash 387872868, now seen corresponding path program 3 times [2022-11-18 21:11:30,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:11:30,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29129351] [2022-11-18 21:11:30,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:11:30,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:11:30,634 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:11:30,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1123161620] [2022-11-18 21:11:30,635 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 21:11:30,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:11:30,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:11:30,639 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:11:30,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-18 21:11:30,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 21:11:30,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:11:30,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-18 21:11:30,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:11:31,593 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 47 proven. 30 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2022-11-18 21:11:31,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:11:32,290 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 26 proven. 42 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2022-11-18 21:11:32,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:11:32,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29129351] [2022-11-18 21:11:32,291 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:11:32,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123161620] [2022-11-18 21:11:32,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123161620] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:11:32,291 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:11:32,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 24 [2022-11-18 21:11:32,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478936007] [2022-11-18 21:11:32,292 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:11:32,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 21:11:32,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:11:32,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 21:11:32,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2022-11-18 21:11:32,293 INFO L87 Difference]: Start difference. First operand 283 states and 403 transitions. Second operand has 24 states, 24 states have (on average 2.875) internal successors, (69), 21 states have internal predecessors, (69), 8 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2022-11-18 21:11:42,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:11:42,235 INFO L93 Difference]: Finished difference Result 378 states and 529 transitions. [2022-11-18 21:11:42,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-18 21:11:42,237 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.875) internal successors, (69), 21 states have internal predecessors, (69), 8 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) Word has length 115 [2022-11-18 21:11:42,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:11:42,239 INFO L225 Difference]: With dead ends: 378 [2022-11-18 21:11:42,240 INFO L226 Difference]: Without dead ends: 376 [2022-11-18 21:11:42,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=309, Invalid=1413, Unknown=0, NotChecked=0, Total=1722 [2022-11-18 21:11:42,241 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 190 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-18 21:11:42,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 376 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-11-18 21:11:42,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-11-18 21:11:42,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 368. [2022-11-18 21:11:42,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 218 states have (on average 1.165137614678899) internal successors, (254), 219 states have internal predecessors, (254), 133 states have call successors, (133), 16 states have call predecessors, (133), 16 states have return successors, (132), 132 states have call predecessors, (132), 132 states have call successors, (132) [2022-11-18 21:11:42,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 519 transitions. [2022-11-18 21:11:42,607 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 519 transitions. Word has length 115 [2022-11-18 21:11:42,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:11:42,608 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 519 transitions. [2022-11-18 21:11:42,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.875) internal successors, (69), 21 states have internal predecessors, (69), 8 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2022-11-18 21:11:42,608 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 519 transitions. [2022-11-18 21:11:42,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-18 21:11:42,610 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:11:42,610 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:11:42,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-18 21:11:42,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 21:11:42,817 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:11:42,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:11:42,818 INFO L85 PathProgramCache]: Analyzing trace with hash 965525295, now seen corresponding path program 4 times [2022-11-18 21:11:42,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:11:42,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089820537] [2022-11-18 21:11:42,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:11:42,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:11:42,831 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:11:42,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [649522604] [2022-11-18 21:11:42,832 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 21:11:42,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:11:42,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:11:42,834 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:11:42,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-18 21:11:42,945 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 21:11:42,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:11:42,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 21:11:42,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:11:43,184 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 139 proven. 28 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2022-11-18 21:11:43,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:11:43,659 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 43 proven. 32 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2022-11-18 21:11:43,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:11:43,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089820537] [2022-11-18 21:11:43,660 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:11:43,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649522604] [2022-11-18 21:11:43,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649522604] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:11:43,661 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:11:43,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 21 [2022-11-18 21:11:43,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539770721] [2022-11-18 21:11:43,662 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:11:43,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 21:11:43,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:11:43,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 21:11:43,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2022-11-18 21:11:43,664 INFO L87 Difference]: Start difference. First operand 368 states and 519 transitions. Second operand has 21 states, 21 states have (on average 2.761904761904762) internal successors, (58), 19 states have internal predecessors, (58), 10 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (35), 10 states have call predecessors, (35), 10 states have call successors, (35) [2022-11-18 21:11:44,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:11:44,458 INFO L93 Difference]: Finished difference Result 449 states and 618 transitions. [2022-11-18 21:11:44,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 21:11:44,463 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.761904761904762) internal successors, (58), 19 states have internal predecessors, (58), 10 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (35), 10 states have call predecessors, (35), 10 states have call successors, (35) Word has length 117 [2022-11-18 21:11:44,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:11:44,464 INFO L225 Difference]: With dead ends: 449 [2022-11-18 21:11:44,464 INFO L226 Difference]: Without dead ends: 154 [2022-11-18 21:11:44,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=208, Invalid=722, Unknown=0, NotChecked=0, Total=930 [2022-11-18 21:11:44,467 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 80 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 21:11:44,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 243 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 21:11:44,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-11-18 21:11:44,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2022-11-18 21:11:44,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 102 states have (on average 1.0196078431372548) internal successors, (104), 103 states have internal predecessors, (104), 37 states have call successors, (37), 14 states have call predecessors, (37), 14 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-11-18 21:11:44,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 177 transitions. [2022-11-18 21:11:44,584 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 177 transitions. Word has length 117 [2022-11-18 21:11:44,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:11:44,584 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 177 transitions. [2022-11-18 21:11:44,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.761904761904762) internal successors, (58), 19 states have internal predecessors, (58), 10 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (35), 10 states have call predecessors, (35), 10 states have call successors, (35) [2022-11-18 21:11:44,585 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 177 transitions. [2022-11-18 21:11:44,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-18 21:11:44,587 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:11:44,587 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:11:44,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-18 21:11:44,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 21:11:44,794 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:11:44,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:11:44,794 INFO L85 PathProgramCache]: Analyzing trace with hash -451913227, now seen corresponding path program 5 times [2022-11-18 21:11:44,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:11:44,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210347388] [2022-11-18 21:11:44,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:11:44,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:11:44,807 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:11:44,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1198445459] [2022-11-18 21:11:44,807 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 21:11:44,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:11:44,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:11:44,809 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:11:44,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-18 21:11:44,940 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-11-18 21:11:44,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:11:44,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 21:11:44,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:11:45,387 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 63 proven. 68 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2022-11-18 21:11:45,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:11:45,931 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 61 proven. 70 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2022-11-18 21:11:45,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:11:45,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210347388] [2022-11-18 21:11:45,932 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:11:45,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198445459] [2022-11-18 21:11:45,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198445459] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:11:45,932 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:11:45,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 29 [2022-11-18 21:11:45,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954075235] [2022-11-18 21:11:45,933 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:11:45,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-18 21:11:45,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:11:45,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-18 21:11:45,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=711, Unknown=0, NotChecked=0, Total=812 [2022-11-18 21:11:45,935 INFO L87 Difference]: Start difference. First operand 154 states and 177 transitions. Second operand has 29 states, 29 states have (on average 2.793103448275862) internal successors, (81), 27 states have internal predecessors, (81), 12 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 11 states have call predecessors, (39), 11 states have call successors, (39) [2022-11-18 21:11:47,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:11:47,592 INFO L93 Difference]: Finished difference Result 162 states and 183 transitions. [2022-11-18 21:11:47,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 21:11:47,593 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.793103448275862) internal successors, (81), 27 states have internal predecessors, (81), 12 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 11 states have call predecessors, (39), 11 states have call successors, (39) Word has length 142 [2022-11-18 21:11:47,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:11:47,593 INFO L225 Difference]: With dead ends: 162 [2022-11-18 21:11:47,594 INFO L226 Difference]: Without dead ends: 0 [2022-11-18 21:11:47,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=403, Invalid=1577, Unknown=0, NotChecked=0, Total=1980 [2022-11-18 21:11:47,596 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 100 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 21:11:47,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 381 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 21:11:47,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-18 21:11:47,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-18 21:11:47,598 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) [2022-11-18 21:11:47,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-18 21:11:47,598 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 142 [2022-11-18 21:11:47,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:11:47,599 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-18 21:11:47,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.793103448275862) internal successors, (81), 27 states have internal predecessors, (81), 12 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 11 states have call predecessors, (39), 11 states have call successors, (39) [2022-11-18 21:11:47,599 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-18 21:11:47,600 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-18 21:11:47,603 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-18 21:11:47,611 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-11-18 21:11:47,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:11:47,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-18 21:11:56,626 WARN L233 SmtUtils]: Spent 7.21s on a formula simplification. DAG size of input: 225 DAG size of output: 72 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-18 21:12:04,212 WARN L233 SmtUtils]: Spent 7.57s on a formula simplification. DAG size of input: 235 DAG size of output: 75 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-18 21:12:13,511 WARN L233 SmtUtils]: Spent 9.29s on a formula simplification. DAG size of input: 225 DAG size of output: 72 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-18 21:12:22,902 WARN L233 SmtUtils]: Spent 9.38s on a formula simplification. DAG size of input: 235 DAG size of output: 75 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-18 21:12:30,115 WARN L233 SmtUtils]: Spent 6.30s on a formula simplification. DAG size of input: 214 DAG size of output: 88 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-18 21:12:40,673 WARN L233 SmtUtils]: Spent 9.15s on a formula simplification. DAG size of input: 225 DAG size of output: 72 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-18 21:12:40,693 INFO L895 garLoopResultBuilder]: At program point L35-2(lines 35 73) the Hoare annotation is: (let ((.cse0 (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (.cse14 (+ |ULTIMATE.start_main_~b~0#1| 1))) (let ((.cse4 (<= |ULTIMATE.start_main_~a~0#1| 2)) (.cse5 (<= .cse14 |ULTIMATE.start_main_~a~0#1|)) (.cse1 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse2 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse6 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse3 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse10 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse7 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse9 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse11 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse12 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse8 (= .cse0 |ULTIMATE.start_main_~a~0#1|)) (.cse13 (= |ULTIMATE.start_main_~s~0#1| 1))) (or (and (<= 0 |ULTIMATE.start_main_~b~0#1|) (= .cse0 (+ |ULTIMATE.start_main_~a~0#1| .cse1 .cse2)) .cse3 .cse4 .cse5 (<= (* 3 |ULTIMATE.start_main_~b~0#1|) 0) (<= 0 |ULTIMATE.start_main_~c~0#1|) (<= (* 3 |ULTIMATE.start_main_~c~0#1|) 0) .cse6 .cse7 .cse8 .cse9) (and .cse3 .cse4 .cse5 (< |ULTIMATE.start_main_~c~0#1| (+ (* (div (+ |ULTIMATE.start_main_~c~0#1| (- |ULTIMATE.start_main_~b~0#1|)) 2) 2) 2)) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse10 (= |ULTIMATE.start_main_~s~0#1| 0) .cse6 (<= |ULTIMATE.start_main_~c~0#1| 2) (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) .cse7 .cse8) (and (= (+ .cse1 .cse2) |ULTIMATE.start_main_~b~0#1|) (<= |ULTIMATE.start_main_~b~0#1| 2) (<= 1 |ULTIMATE.start_main_~b~0#1|) .cse11 (= |ULTIMATE.start_main_~q~0#1| 0) .cse6 .cse12 .cse8 .cse9 .cse13) (and (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~x~0#1|) .cse3 (<= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|) .cse10 .cse7 (or (<= (* 2 |ULTIMATE.start_main_~v~0#1|) |ULTIMATE.start_main_~c~0#1|) (not (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~v~0#1|))) (< |ULTIMATE.start_main_~x~0#1| (* 2 |ULTIMATE.start_main_~y~0#1|)) .cse8 .cse9 (= (+ |ULTIMATE.start_main_~s~0#1| 1) 0)) (and (<= (+ |ULTIMATE.start_main_~x~0#1| 1) |ULTIMATE.start_main_~y~0#1|) (<= (+ |ULTIMATE.start_main_~b~0#1| (* 2 |ULTIMATE.start_main_~a~0#1|)) 2) .cse11 (< (* 2 |ULTIMATE.start_main_~c~0#1|) .cse14) (= (+ 2 |ULTIMATE.start_main_~q~0#1|) 0) (< (* 2 |ULTIMATE.start_main_~b~0#1|) (+ |ULTIMATE.start_main_~c~0#1| 1)) .cse12 (= |ULTIMATE.start_main_~y~0#1| (+ (* 2 |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~b~0#1|)) .cse8 .cse13)))) [2022-11-18 21:12:40,693 INFO L895 garLoopResultBuilder]: At program point L35-3(lines 35 73) the Hoare annotation is: (let ((.cse0 (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)))) (and (= .cse0 (+ |ULTIMATE.start_main_~a~0#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|))) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= (+ |ULTIMATE.start_main_~b~0#1| 1) |ULTIMATE.start_main_~a~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= .cse0 |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2))) [2022-11-18 21:12:40,694 INFO L895 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: (let ((.cse13 (+ |ULTIMATE.start_main_~b~0#1| 1)) (.cse16 (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)))) (let ((.cse1 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse3 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse4 (= .cse16 (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|) (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~c~0#1|))) (.cse6 (= |ULTIMATE.start_main_~s~0#1| 0)) (.cse9 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse10 (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse2 (<= .cse13 |ULTIMATE.start_main_~c~0#1|)) (.cse7 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse8 (<= |ULTIMATE.start_main_~c~0#1| 2)) (.cse12 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse0 (= (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~d~0#1|) |ULTIMATE.start_main_~v~0#1|)) (.cse5 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse11 (= .cse16 |ULTIMATE.start_main_~a~0#1|)) (.cse15 (<= |ULTIMATE.start_main_~x~0#1| 2))) (or (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~v~0#1|) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11) (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 (= (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~v~0#1|) .cse10 .cse11 (= 2 |ULTIMATE.start_main_~d~0#1|)) (let ((.cse14 (* |ULTIMATE.start_main_~b~0#1| 4))) (and (= |ULTIMATE.start_main_~a~0#1| (+ |ULTIMATE.start_main_~c~0#1| (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~k~0#1|))) (<= |ULTIMATE.start_main_~y~0#1| 2) .cse12 (<= |ULTIMATE.start_main_~a~0#1| 2) .cse0 (<= .cse13 |ULTIMATE.start_main_~a~0#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|) .cse2 .cse7 .cse8 (<= |ULTIMATE.start_main_~v~0#1| .cse14) .cse11 .cse15 (<= .cse14 |ULTIMATE.start_main_~c~0#1|))) (and (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~x~0#1|) .cse12 .cse0 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) .cse5 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) .cse11 .cse15 (= |ULTIMATE.start_main_~s~0#1| 1))))) [2022-11-18 21:12:40,694 INFO L899 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2022-11-18 21:12:40,694 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-18 21:12:40,694 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-18 21:12:40,694 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-18 21:12:40,694 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)) [2022-11-18 21:12:40,694 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)) [2022-11-18 21:12:40,694 INFO L899 garLoopResultBuilder]: For program point L53(lines 49 59) no Hoare annotation was computed. [2022-11-18 21:12:40,695 INFO L895 garLoopResultBuilder]: At program point L49-2(lines 49 59) the Hoare annotation is: (let ((.cse14 (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (.cse15 (+ |ULTIMATE.start_main_~b~0#1| 1))) (let ((.cse3 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse4 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse5 (= |ULTIMATE.start_main_~s~0#1| 0)) (.cse8 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse9 (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse11 (= |ULTIMATE.start_main_~a~0#1| (+ |ULTIMATE.start_main_~c~0#1| (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~k~0#1|)))) (.cse12 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse0 (= (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~d~0#1|) |ULTIMATE.start_main_~v~0#1|)) (.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 (<= .cse15 |ULTIMATE.start_main_~c~0#1|)) (.cse6 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse7 (<= |ULTIMATE.start_main_~c~0#1| 2)) (.cse10 (= .cse14 |ULTIMATE.start_main_~a~0#1|)) (.cse13 (<= |ULTIMATE.start_main_~x~0#1| 2))) (or (and (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~v~0#1|) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10) (and .cse11 .cse12 .cse0 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) .cse4 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) .cse10 .cse13 (= |ULTIMATE.start_main_~s~0#1| 1)) (and (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse2 .cse3 (= .cse14 (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|) (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~c~0#1|)) .cse4 .cse5 .cse6 .cse7 .cse8 (= (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~v~0#1|) .cse9 .cse10 (= 2 |ULTIMATE.start_main_~d~0#1|)) (let ((.cse16 (* |ULTIMATE.start_main_~b~0#1| 4))) (and .cse11 (<= |ULTIMATE.start_main_~y~0#1| 2) .cse12 (<= |ULTIMATE.start_main_~a~0#1| 2) .cse0 (<= .cse15 |ULTIMATE.start_main_~a~0#1|) .cse1 .cse2 .cse6 .cse7 (<= |ULTIMATE.start_main_~v~0#1| .cse16) .cse10 .cse13 (<= .cse16 |ULTIMATE.start_main_~c~0#1|)))))) [2022-11-18 21:12:40,695 INFO L899 garLoopResultBuilder]: For program point L49-3(lines 49 59) no Hoare annotation was computed. [2022-11-18 21:12:40,695 INFO L899 garLoopResultBuilder]: For program point L74(line 74) no Hoare annotation was computed. [2022-11-18 21:12:40,695 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-18 21:12:40,695 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)) [2022-11-18 21:12:40,695 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse14 (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (.cse15 (+ |ULTIMATE.start_main_~b~0#1| 1))) (let ((.cse3 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse4 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse5 (= |ULTIMATE.start_main_~s~0#1| 0)) (.cse8 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse9 (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse11 (= |ULTIMATE.start_main_~a~0#1| (+ |ULTIMATE.start_main_~c~0#1| (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~k~0#1|)))) (.cse12 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse0 (= (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~d~0#1|) |ULTIMATE.start_main_~v~0#1|)) (.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 (<= .cse15 |ULTIMATE.start_main_~c~0#1|)) (.cse6 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse7 (<= |ULTIMATE.start_main_~c~0#1| 2)) (.cse10 (= .cse14 |ULTIMATE.start_main_~a~0#1|)) (.cse13 (<= |ULTIMATE.start_main_~x~0#1| 2))) (or (and (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~v~0#1|) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10) (and .cse11 .cse12 .cse0 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) .cse4 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) .cse10 .cse13 (= |ULTIMATE.start_main_~s~0#1| 1)) (and (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse2 .cse3 (= .cse14 (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|) (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~c~0#1|)) .cse4 .cse5 .cse6 .cse7 .cse8 (= (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~v~0#1|) .cse9 .cse10 (= 2 |ULTIMATE.start_main_~d~0#1|)) (let ((.cse16 (* |ULTIMATE.start_main_~b~0#1| 4))) (and .cse11 (<= |ULTIMATE.start_main_~y~0#1| 2) .cse12 (<= |ULTIMATE.start_main_~a~0#1| 2) .cse0 (<= .cse15 |ULTIMATE.start_main_~a~0#1|) .cse1 .cse2 .cse6 .cse7 (<= |ULTIMATE.start_main_~v~0#1| .cse16) .cse10 .cse13 (<= .cse16 |ULTIMATE.start_main_~c~0#1|)))))) [2022-11-18 21:12:40,696 INFO L895 garLoopResultBuilder]: At program point L50-1(line 50) the Hoare annotation is: (let ((.cse13 (+ |ULTIMATE.start_main_~b~0#1| 1)) (.cse16 (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)))) (let ((.cse1 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse3 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse4 (= .cse16 (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|) (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~c~0#1|))) (.cse6 (= |ULTIMATE.start_main_~s~0#1| 0)) (.cse9 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse10 (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse2 (<= .cse13 |ULTIMATE.start_main_~c~0#1|)) (.cse7 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse8 (<= |ULTIMATE.start_main_~c~0#1| 2)) (.cse12 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse0 (= (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~d~0#1|) |ULTIMATE.start_main_~v~0#1|)) (.cse5 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse11 (= .cse16 |ULTIMATE.start_main_~a~0#1|)) (.cse15 (<= |ULTIMATE.start_main_~x~0#1| 2))) (or (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~v~0#1|) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11) (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 (= (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~v~0#1|) .cse10 .cse11 (= 2 |ULTIMATE.start_main_~d~0#1|)) (let ((.cse14 (* |ULTIMATE.start_main_~b~0#1| 4))) (and (= |ULTIMATE.start_main_~a~0#1| (+ |ULTIMATE.start_main_~c~0#1| (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~k~0#1|))) (<= |ULTIMATE.start_main_~y~0#1| 2) .cse12 (<= |ULTIMATE.start_main_~a~0#1| 2) .cse0 (<= .cse13 |ULTIMATE.start_main_~a~0#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|) .cse2 .cse7 .cse8 (<= |ULTIMATE.start_main_~v~0#1| .cse14) .cse11 .cse15 (<= .cse14 |ULTIMATE.start_main_~c~0#1|))) (and (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~x~0#1|) .cse12 .cse0 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) .cse5 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) .cse11 .cse15 (= |ULTIMATE.start_main_~s~0#1| 1))))) [2022-11-18 21:12:40,696 INFO L902 garLoopResultBuilder]: At program point L75(lines 18 76) the Hoare annotation is: true [2022-11-18 21:12:40,696 INFO L895 garLoopResultBuilder]: At program point L42-2(lines 42 62) the Hoare annotation is: (let ((.cse17 (* 2 |ULTIMATE.start_main_~b~0#1|)) (.cse22 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse23 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (let ((.cse0 (+ .cse22 .cse23)) (.cse12 (+ |ULTIMATE.start_main_~b~0#1| 1)) (.cse20 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse21 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse16 (+ .cse17 |ULTIMATE.start_main_~c~0#1|))) (let ((.cse13 (<= .cse16 2)) (.cse11 (= (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~d~0#1|) |ULTIMATE.start_main_~v~0#1|)) (.cse6 (= (+ .cse20 .cse21) |ULTIMATE.start_main_~b~0#1|)) (.cse2 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse7 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse3 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse10 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse5 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse1 (<= .cse12 |ULTIMATE.start_main_~c~0#1|)) (.cse18 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse19 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse8 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse14 (= |ULTIMATE.start_main_~s~0#1| 0)) (.cse9 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse15 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse4 (= .cse0 |ULTIMATE.start_main_~a~0#1|))) (or (and (<= (+ |ULTIMATE.start_main_~x~0#1| 1) |ULTIMATE.start_main_~y~0#1|) (forall ((|ULTIMATE.start_main_~q~0#1| Int) (|ULTIMATE.start_main_~s~0#1| Int)) (= .cse0 (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|) (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~c~0#1|))) .cse1 (<= (+ |ULTIMATE.start_main_~b~0#1| (* 2 |ULTIMATE.start_main_~a~0#1|)) 2) .cse2 (= (+ 2 |ULTIMATE.start_main_~q~0#1|) 0) .cse3 (= |ULTIMATE.start_main_~y~0#1| (+ (* 2 |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~b~0#1|)) .cse4 .cse5) (and (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~x~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) .cse6 (<= |ULTIMATE.start_main_~b~0#1| 2) .cse2 .cse7 .cse8 .cse9 .cse3 .cse4 .cse10 .cse5) (and (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) .cse11 (<= .cse12 |ULTIMATE.start_main_~a~0#1|) .cse6 .cse13 .cse14 .cse9 .cse15 (= .cse16 |ULTIMATE.start_main_~y~0#1|) (< |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~b~0#1|) (= .cse17 |ULTIMATE.start_main_~v~0#1|) .cse4 (= 2 |ULTIMATE.start_main_~k~0#1|)) (and (= (+ .cse18 .cse19 .cse20 .cse21) (+ .cse22 |ULTIMATE.start_main_~b~0#1| .cse23)) (<= |ULTIMATE.start_main_~v~0#1| .cse17) .cse11 .cse6 .cse13 (<= 0 |ULTIMATE.start_main_~c~0#1|) .cse2 .cse7 (<= (+ |ULTIMATE.start_main_~c~0#1| 1) .cse17) .cse9 .cse3 .cse4 .cse10 .cse5) (and (= |ULTIMATE.start_main_~k~0#1| 1) (< |ULTIMATE.start_main_~x~0#1| .cse17) .cse11 .cse6 .cse2 .cse7 .cse3 .cse4 .cse10 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse5 (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) |ULTIMATE.start_main_~x~0#1|)) (and (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse1 (= |ULTIMATE.start_main_~q~0#1| 1) (= .cse0 (+ .cse18 .cse19 |ULTIMATE.start_main_~c~0#1|)) .cse8 .cse14 .cse9 (<= |ULTIMATE.start_main_~c~0#1| 2) .cse15 (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~y~0#1|) .cse4))))) [2022-11-18 21:12:40,697 INFO L899 garLoopResultBuilder]: For program point L42-3(lines 42 62) no Hoare annotation was computed. [2022-11-18 21:12:40,697 INFO L899 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2022-11-18 21:12:40,697 INFO L902 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: true [2022-11-18 21:12:40,697 INFO L899 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2022-11-18 21:12:40,698 INFO L895 garLoopResultBuilder]: At program point L51(line 51) the Hoare annotation is: (let ((.cse13 (+ |ULTIMATE.start_main_~b~0#1| 1)) (.cse16 (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)))) (let ((.cse1 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse3 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse4 (= .cse16 (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|) (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~c~0#1|))) (.cse6 (= |ULTIMATE.start_main_~s~0#1| 0)) (.cse9 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse10 (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse2 (<= .cse13 |ULTIMATE.start_main_~c~0#1|)) (.cse7 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse8 (<= |ULTIMATE.start_main_~c~0#1| 2)) (.cse12 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse0 (= (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~d~0#1|) |ULTIMATE.start_main_~v~0#1|)) (.cse5 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse11 (= .cse16 |ULTIMATE.start_main_~a~0#1|)) (.cse15 (<= |ULTIMATE.start_main_~x~0#1| 2))) (or (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~v~0#1|) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11) (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 (= (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~v~0#1|) .cse10 .cse11 (= 2 |ULTIMATE.start_main_~d~0#1|)) (let ((.cse14 (* |ULTIMATE.start_main_~b~0#1| 4))) (and (= |ULTIMATE.start_main_~a~0#1| (+ |ULTIMATE.start_main_~c~0#1| (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~k~0#1|))) (<= |ULTIMATE.start_main_~y~0#1| 2) .cse12 (<= |ULTIMATE.start_main_~a~0#1| 2) .cse0 (<= .cse13 |ULTIMATE.start_main_~a~0#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|) .cse2 .cse7 .cse8 (<= |ULTIMATE.start_main_~v~0#1| .cse14) .cse11 .cse15 (<= .cse14 |ULTIMATE.start_main_~c~0#1|))) (and (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~x~0#1|) .cse12 .cse0 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) .cse5 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) .cse11 .cse15 (= |ULTIMATE.start_main_~s~0#1| 1))))) [2022-11-18 21:12:40,698 INFO L899 garLoopResultBuilder]: For program point L43(lines 43 44) no Hoare annotation was computed. [2022-11-18 21:12:40,698 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 7 9) the Hoare annotation is: true [2022-11-18 21:12:40,698 INFO L899 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2022-11-18 21:12:40,698 INFO L899 garLoopResultBuilder]: For program point L8-2(lines 7 9) no Hoare annotation was computed. [2022-11-18 21:12:40,699 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2022-11-18 21:12:40,699 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 10 16) the Hoare annotation is: true [2022-11-18 21:12:40,699 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2022-11-18 21:12:40,699 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2022-11-18 21:12:40,699 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2022-11-18 21:12:40,699 INFO L899 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2022-11-18 21:12:40,699 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2022-11-18 21:12:40,703 INFO L444 BasicCegarLoop]: Path program histogram: [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:12:40,705 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 21:12:40,725 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~q~0#1,QUANTIFIED] [2022-11-18 21:12:40,726 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0#1,QUANTIFIED] [2022-11-18 21:12:40,733 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~q~0#1,QUANTIFIED] [2022-11-18 21:12:40,733 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0#1,QUANTIFIED] [2022-11-18 21:12:40,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 09:12:40 BoogieIcfgContainer [2022-11-18 21:12:40,742 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 21:12:40,743 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 21:12:40,743 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 21:12:40,743 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 21:12:40,744 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:09:39" (3/4) ... [2022-11-18 21:12:40,747 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-18 21:12:40,753 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-11-18 21:12:40,753 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-18 21:12:40,757 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-11-18 21:12:40,757 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-18 21:12:40,758 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-18 21:12:40,758 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-18 21:12:40,800 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 21:12:40,800 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 21:12:40,801 INFO L158 Benchmark]: Toolchain (without parser) took 182851.77ms. Allocated memory was 130.0MB in the beginning and 211.8MB in the end (delta: 81.8MB). Free memory was 94.7MB in the beginning and 113.9MB in the end (delta: -19.2MB). Peak memory consumption was 63.0MB. Max. memory is 16.1GB. [2022-11-18 21:12:40,801 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 81.8MB. Free memory was 36.6MB in the beginning and 36.6MB in the end (delta: 45.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 21:12:40,801 INFO L158 Benchmark]: CACSL2BoogieTranslator took 466.75ms. Allocated memory is still 130.0MB. Free memory was 94.7MB in the beginning and 103.0MB in the end (delta: -8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 21:12:40,802 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.05ms. Allocated memory is still 130.0MB. Free memory was 103.0MB in the beginning and 101.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 21:12:40,802 INFO L158 Benchmark]: Boogie Preprocessor took 50.28ms. Allocated memory is still 130.0MB. Free memory was 101.4MB in the beginning and 100.5MB in the end (delta: 926.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 21:12:40,802 INFO L158 Benchmark]: RCFGBuilder took 548.52ms. Allocated memory is still 130.0MB. Free memory was 100.1MB in the beginning and 88.9MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 21:12:40,803 INFO L158 Benchmark]: TraceAbstraction took 181667.89ms. Allocated memory was 130.0MB in the beginning and 211.8MB in the end (delta: 81.8MB). Free memory was 87.9MB in the beginning and 117.1MB in the end (delta: -29.1MB). Peak memory consumption was 112.3MB. Max. memory is 16.1GB. [2022-11-18 21:12:40,803 INFO L158 Benchmark]: Witness Printer took 57.30ms. Allocated memory is still 211.8MB. Free memory was 117.1MB in the beginning and 113.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-18 21:12:40,805 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 81.8MB. Free memory was 36.6MB in the beginning and 36.6MB in the end (delta: 45.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 466.75ms. Allocated memory is still 130.0MB. Free memory was 94.7MB in the beginning and 103.0MB in the end (delta: -8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.05ms. Allocated memory is still 130.0MB. Free memory was 103.0MB in the beginning and 101.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 50.28ms. Allocated memory is still 130.0MB. Free memory was 101.4MB in the beginning and 100.5MB in the end (delta: 926.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 548.52ms. Allocated memory is still 130.0MB. Free memory was 100.1MB in the beginning and 88.9MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 181667.89ms. Allocated memory was 130.0MB in the beginning and 211.8MB in the end (delta: 81.8MB). Free memory was 87.9MB in the beginning and 117.1MB in the end (delta: -29.1MB). Peak memory consumption was 112.3MB. Max. memory is 16.1GB. * Witness Printer took 57.30ms. Allocated memory is still 211.8MB. Free memory was 117.1MB in the beginning and 113.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~q~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~q~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0#1,QUANTIFIED] * 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, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 181.5s, OverallIterations: 19, TraceHistogramMax: 17, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.1s, AutomataDifference: 93.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 52.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4 mSolverCounterUnknown, 1840 SdHoareTripleChecker+Valid, 47.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1790 mSDsluCounter, 4268 SdHoareTripleChecker+Invalid, 45.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 188 IncrementalHoareTripleChecker+Unchecked, 3432 mSDsCounter, 1798 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8162 IncrementalHoareTripleChecker+Invalid, 10152 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1798 mSolverCounterUnsat, 836 mSDtfsCounter, 8162 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2563 GetRequests, 2068 SyntacticMatches, 13 SemanticMatches, 482 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4514 ImplicationChecksByTransitivity, 53.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=368occurred in iteration=17, InterpolantAutomatonStates: 312, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.3s AutomataMinimizationTime, 19 MinimizatonAttempts, 199 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 389 PreInvPairs, 463 NumberOfFragments, 1957 HoareAnnotationTreeSize, 389 FomulaSimplifications, 8748 FormulaSimplificationTreeSizeReduction, 1.6s HoareSimplificationTime, 15 FomulaSimplificationsInter, 27494 FormulaSimplificationTreeSizeReductionInter, 51.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 26.1s InterpolantComputationTime, 1290 NumberOfCodeBlocks, 1219 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 2348 ConstructedInterpolants, 16 QuantifiedInterpolants, 11421 SizeOfPredicates, 138 NumberOfNonLiveVariables, 3182 ConjunctsInSsa, 456 ConjunctsInUnsatCore, 34 InterpolantComputations, 6 PerfectInterpolantSequences, 5032/5581 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: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 42]: Loop Invariant [2022-11-18 21:12:40,813 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~q~0#1,QUANTIFIED] [2022-11-18 21:12:40,813 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0#1,QUANTIFIED] [2022-11-18 21:12:40,815 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~q~0#1,QUANTIFIED] [2022-11-18 21:12:40,815 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0#1,QUANTIFIED] Derived loop invariant: (((((((((((((x + 1 <= y && (forall ULTIMATE.start_main_~q~0#1 : int, ULTIMATE.start_main_~s~0#1 : int :: r * y + p * x == k * ULTIMATE.start_main_~q~0#1 * x + k * ULTIMATE.start_main_~s~0#1 * y + c)) && b + 1 <= c) && b + 2 * a <= 2) && r == 0) && 2 + q == 0) && a == x) && y == 2 * x + b) && r * y + p * x == a) && s == 1) || (((((((((((c == x && 1 <= y) && s * y + q * x == b) && b <= 2) && r == 0) && q == 0) && k == 0) && 1 <= x) && a == x) && r * y + p * x == a) && x <= 2) && s == 1)) || ((((((((((((a == y && b * d == v) && b + 1 <= a) && s * y + q * x == b) && 2 * b + c <= 2) && s == 0) && 1 <= x) && r == 1) && 2 * b + c == y) && c < b) && 2 * b == v) && r * y + p * x == a) && 2 == k)) || (((((((((((((k * q * x + k * s * y + s * y + q * x == r * y + b + p * x && v <= 2 * b) && b * d == v) && s * y + q * x == b) && 2 * b + c <= 2) && 0 <= c) && r == 0) && q == 0) && c + 1 <= 2 * b) && 1 <= x) && a == x) && r * y + p * x == a) && x <= 2) && s == 1)) || (((((((((((k == 1 && x < 2 * b) && b * d == v) && s * y + q * x == b) && r == 0) && q == 0) && a == x) && r * y + p * x == a) && x <= 2) && b <= x) && s == 1) && b + c == x)) || ((((((((((b == x && b + 1 <= c) && q == 1) && r * y + p * x == k * q * x + k * s * y + c) && k == 0) && s == 0) && 1 <= x) && c <= 2) && r == 1) && c == y) && r * y + p * x == a) - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: ((((((((((((((a == y && b * d == v) && s * y + q * x == b) && b + 1 <= c) && b == v) && q == 1) && k == 0) && s == 0) && 1 <= x) && c <= 2) && r == 1) && c == y) && r * y + p * x == a) || ((((((((((((a == c + b * k && 1 <= y) && b * d == v) && b == y) && b <= a) && v <= c) && r == 0) && q == 0) && k == 0) && a == x) && r * y + p * x == a) && x <= 2) && s == 1)) || ((((((((((((b == x && b + 1 <= c) && q == 1) && r * y + p * x == k * q * x + k * s * y + c) && k == 0) && s == 0) && 1 <= x) && c <= 2) && r == 1) && 2 * b == v) && c == y) && r * y + p * x == a) && 2 == d)) || (((((((((((((a == c + b * k && y <= 2) && 1 <= y) && a <= 2) && b * d == v) && b + 1 <= a) && s * y + q * x == b) && b + 1 <= c) && 1 <= x) && c <= 2) && v <= b * 4) && r * y + p * x == a) && x <= 2) && b * 4 <= c) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((((((((((((0 <= b && r * y + p * x == a + s * y + q * x) && a == y) && a <= 2) && b + 1 <= a) && 3 * b <= 0) && 0 <= c) && 3 * c <= 0) && 1 <= x) && r == 1) && r * y + p * x == a) && x <= 2) || (((((((((((a == y && a <= 2) && b + 1 <= a) && c < (c + -b) / 2 * 2 + 2) && b == x) && q == 1) && s == 0) && 1 <= x) && c <= 2) && b <= c) && r == 1) && r * y + p * x == a)) || (((((((((s * y + q * x == b && b <= 2) && 1 <= b) && r == 0) && q == 0) && 1 <= x) && a == x) && r * y + p * x == a) && x <= 2) && s == 1)) || (((((((((b + y == x && a == y) && y <= x) && q == 1) && r == 1) && (2 * v <= c || !(c == v))) && x < 2 * y) && r * y + p * x == a) && x <= 2) && s + 1 == 0)) || (((((((((x + 1 <= y && b + 2 * a <= 2) && r == 0) && 2 * c < b + 1) && 2 + q == 0) && 2 * b < c + 1) && a == x) && y == 2 * x + b) && r * y + p * x == a) && s == 1) RESULT: Ultimate proved your program to be correct! [2022-11-18 21:12:40,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45ea5e10-23b3-4c02-8159-c52e2249e9bd/bin/uautomizer-TMbwUNV5ro/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