./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-64.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-64.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8c033995a52b99c0430cec79c98c5775553fa5b7cf687f2e866f081cb29fa4f7 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:26:25,415 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:26:25,507 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 13:26:25,512 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:26:25,512 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:26:25,533 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:26:25,534 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:26:25,535 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:26:25,535 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:26:25,536 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:26:25,536 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:26:25,537 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:26:25,537 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:26:25,538 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 13:26:25,538 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:26:25,539 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:26:25,540 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 13:26:25,540 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 13:26:25,540 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:26:25,541 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 13:26:25,541 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 13:26:25,542 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 13:26:25,543 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:26:25,543 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 13:26:25,543 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 13:26:25,544 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 13:26:25,544 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 13:26:25,544 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:26:25,545 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 13:26:25,545 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:26:25,545 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 13:26:25,546 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 13:26:25,546 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 13:26:25,546 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:26:25,547 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:26:25,547 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:26:25,547 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:26:25,547 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:26:25,547 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:26:25,548 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:26:25,548 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 13:26:25,548 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 13:26:25,548 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 13:26:25,548 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:26:25,549 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 13:26:25,549 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:26:25,549 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:26:25,549 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c033995a52b99c0430cec79c98c5775553fa5b7cf687f2e866f081cb29fa4f7 [2023-12-02 13:26:25,791 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:26:25,810 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:26:25,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:26:25,814 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:26:25,814 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:26:25,815 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-64.i [2023-12-02 13:26:28,578 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:26:28,790 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:26:28,791 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-64.i [2023-12-02 13:26:28,799 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/data/d7a4d3c4c/1d43fd12c6a34efeb442ddaa2148a07c/FLAGfd55e08c6 [2023-12-02 13:26:28,814 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/data/d7a4d3c4c/1d43fd12c6a34efeb442ddaa2148a07c [2023-12-02 13:26:28,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:26:28,818 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:26:28,819 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:26:28,819 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:26:28,824 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:26:28,825 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:26:28" (1/1) ... [2023-12-02 13:26:28,826 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4279bc7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:28, skipping insertion in model container [2023-12-02 13:26:28,827 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:26:28" (1/1) ... [2023-12-02 13:26:28,851 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:26:28,999 WARN L240 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_8443e6fb-be10-467c-b530-c544b8847e4f/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-64.i[915,928] [2023-12-02 13:26:29,037 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:26:29,048 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 13:26:29,061 WARN L240 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_8443e6fb-be10-467c-b530-c544b8847e4f/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-64.i[915,928] [2023-12-02 13:26:29,083 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:26:29,099 INFO L206 MainTranslator]: Completed translation [2023-12-02 13:26:29,099 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:29 WrapperNode [2023-12-02 13:26:29,099 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:26:29,100 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 13:26:29,101 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 13:26:29,101 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 13:26:29,108 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:29" (1/1) ... [2023-12-02 13:26:29,118 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:29" (1/1) ... [2023-12-02 13:26:29,154 INFO L138 Inliner]: procedures = 26, calls = 25, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 118 [2023-12-02 13:26:29,154 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 13:26:29,155 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 13:26:29,155 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 13:26:29,156 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 13:26:29,165 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:29" (1/1) ... [2023-12-02 13:26:29,165 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:29" (1/1) ... [2023-12-02 13:26:29,168 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:29" (1/1) ... [2023-12-02 13:26:29,169 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:29" (1/1) ... [2023-12-02 13:26:29,179 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:29" (1/1) ... [2023-12-02 13:26:29,182 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:29" (1/1) ... [2023-12-02 13:26:29,185 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:29" (1/1) ... [2023-12-02 13:26:29,187 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:29" (1/1) ... [2023-12-02 13:26:29,191 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 13:26:29,192 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 13:26:29,192 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 13:26:29,192 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 13:26:29,193 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:29" (1/1) ... [2023-12-02 13:26:29,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:26:29,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:26:29,224 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 13:26:29,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 13:26:29,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 13:26:29,258 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 13:26:29,258 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 13:26:29,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 13:26:29,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 13:26:29,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 13:26:29,336 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 13:26:29,339 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 13:26:29,609 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 13:26:29,772 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 13:26:29,772 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 13:26:29,773 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:26:29 BoogieIcfgContainer [2023-12-02 13:26:29,773 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 13:26:29,789 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 13:26:29,789 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 13:26:29,793 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 13:26:29,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:26:28" (1/3) ... [2023-12-02 13:26:29,794 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e955dc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:26:29, skipping insertion in model container [2023-12-02 13:26:29,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:29" (2/3) ... [2023-12-02 13:26:29,794 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e955dc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:26:29, skipping insertion in model container [2023-12-02 13:26:29,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:26:29" (3/3) ... [2023-12-02 13:26:29,796 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount25_file-64.i [2023-12-02 13:26:29,816 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 13:26:29,816 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 13:26:29,857 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 13:26:29,864 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@50afc3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 13:26:29,864 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 13:26:29,868 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 13:26:29,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-02 13:26:29,877 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:26:29,877 INFO L195 NwaCegarLoop]: trace histogram [12, 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, 1, 1, 1] [2023-12-02 13:26:29,878 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:26:29,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:26:29,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1274320839, now seen corresponding path program 1 times [2023-12-02 13:26:29,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:26:29,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794775262] [2023-12-02 13:26:29,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:26:29,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:26:30,021 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:26:30,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1370994470] [2023-12-02 13:26:30,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:26:30,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:26:30,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:26:30,025 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:26:30,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 13:26:30,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 13:26:30,251 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 13:26:30,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 13:26:30,373 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 13:26:30,375 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 13:26:30,376 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 13:26:30,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 13:26:30,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:26:30,582 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-02 13:26:30,585 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 13:26:30,629 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 01:26:30 BoogieIcfgContainer [2023-12-02 13:26:30,629 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 13:26:30,630 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 13:26:30,630 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 13:26:30,630 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 13:26:30,631 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:26:29" (3/4) ... [2023-12-02 13:26:30,633 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 13:26:30,634 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 13:26:30,635 INFO L158 Benchmark]: Toolchain (without parser) took 1817.20ms. Allocated memory is still 165.7MB. Free memory was 129.9MB in the beginning and 107.5MB in the end (delta: 22.4MB). Peak memory consumption was 24.9MB. Max. memory is 16.1GB. [2023-12-02 13:26:30,636 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 111.1MB. Free memory is still 84.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 13:26:30,636 INFO L158 Benchmark]: CACSL2BoogieTranslator took 280.48ms. Allocated memory is still 165.7MB. Free memory was 129.9MB in the beginning and 117.8MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-02 13:26:30,637 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.13ms. Allocated memory is still 165.7MB. Free memory was 117.8MB in the beginning and 114.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 13:26:30,638 INFO L158 Benchmark]: Boogie Preprocessor took 36.14ms. Allocated memory is still 165.7MB. Free memory was 114.6MB in the beginning and 113.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 13:26:30,638 INFO L158 Benchmark]: RCFGBuilder took 581.49ms. Allocated memory is still 165.7MB. Free memory was 112.5MB in the beginning and 77.6MB in the end (delta: 34.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2023-12-02 13:26:30,639 INFO L158 Benchmark]: TraceAbstraction took 840.31ms. Allocated memory is still 165.7MB. Free memory was 135.3MB in the beginning and 107.5MB in the end (delta: 27.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-12-02 13:26:30,640 INFO L158 Benchmark]: Witness Printer took 4.34ms. Allocated memory is still 165.7MB. Free memory is still 107.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 13:26:30,643 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 111.1MB. Free memory is still 84.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 280.48ms. Allocated memory is still 165.7MB. Free memory was 129.9MB in the beginning and 117.8MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.13ms. Allocated memory is still 165.7MB. Free memory was 117.8MB in the beginning and 114.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.14ms. Allocated memory is still 165.7MB. Free memory was 114.6MB in the beginning and 113.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 581.49ms. Allocated memory is still 165.7MB. Free memory was 112.5MB in the beginning and 77.6MB in the end (delta: 34.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 840.31ms. Allocated memory is still 165.7MB. Free memory was 135.3MB in the beginning and 107.5MB in the end (delta: 27.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Witness Printer took 4.34ms. Allocated memory is still 165.7MB. Free memory is still 107.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 82, overapproximation of someBinaryFLOATComparisonOperation at line 82, overapproximation of bitwiseAnd at line 38. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] double var_1_1 = 0.9; [L23] unsigned long int var_1_3 = 2941876006; [L24] double var_1_5 = 127.422; [L25] unsigned short int var_1_6 = 10; [L26] unsigned char var_1_7 = 1; [L27] unsigned long int var_1_9 = 4; [L28] unsigned short int var_1_11 = 44699; [L29] signed short int var_1_13 = 2; [L30] unsigned char var_1_15 = 0; [L31] unsigned char var_1_16 = 16; [L32] float var_1_17 = 8.125; [L86] isInitial = 1 [L87] FCALL initially() [L88] COND TRUE 1 [L89] FCALL updateLastVariables() [L90] CALL updateVariables() [L60] var_1_3 = __VERIFIER_nondet_ulong() [L61] CALL assume_abort_if_not(var_1_3 >= 2147483647) VAL [\old(cond)=1, isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483649, var_1_5=63711/500, var_1_6=10, var_1_7=1, var_1_9=4] [L20] COND FALSE !(!cond) [L61] RET assume_abort_if_not(var_1_3 >= 2147483647) VAL [isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483649, var_1_5=63711/500, var_1_6=10, var_1_7=1, var_1_9=4] [L62] CALL assume_abort_if_not(var_1_3 <= 4294967295) VAL [\old(cond)=1, isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483649, var_1_5=63711/500, var_1_6=10, var_1_7=1, var_1_9=4] [L20] COND FALSE !(!cond) [L62] RET assume_abort_if_not(var_1_3 <= 4294967295) VAL [isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483649, var_1_5=63711/500, var_1_6=10, var_1_7=1, var_1_9=4] [L63] var_1_5 = __VERIFIER_nondet_double() [L64] CALL assume_abort_if_not((var_1_5 >= -922337.2036854765600e+13F && var_1_5 <= -1.0e-20F) || (var_1_5 <= 9223372.036854765600e+12F && var_1_5 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483649, var_1_6=10, var_1_7=1, var_1_9=4] [L20] COND FALSE !(!cond) [L64] RET assume_abort_if_not((var_1_5 >= -922337.2036854765600e+13F && var_1_5 <= -1.0e-20F) || (var_1_5 <= 9223372.036854765600e+12F && var_1_5 >= 1.0e-20F )) VAL [isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483649, var_1_6=10, var_1_7=1, var_1_9=4] [L65] var_1_7 = __VERIFIER_nondet_uchar() [L66] CALL assume_abort_if_not(var_1_7 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483649, var_1_6=10, var_1_9=4] [L20] COND FALSE !(!cond) [L66] RET assume_abort_if_not(var_1_7 >= 0) VAL [isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483649, var_1_6=10, var_1_9=4] [L67] CALL assume_abort_if_not(var_1_7 <= 1) VAL [\old(cond)=1, isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483649, var_1_6=10, var_1_7=1, var_1_9=4] [L20] COND FALSE !(!cond) [L67] RET assume_abort_if_not(var_1_7 <= 1) VAL [isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483649, var_1_6=10, var_1_7=1, var_1_9=4] [L68] var_1_9 = __VERIFIER_nondet_ulong() [L69] CALL assume_abort_if_not(var_1_9 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483649, var_1_6=10, var_1_7=1] [L20] COND FALSE !(!cond) [L69] RET assume_abort_if_not(var_1_9 >= 0) VAL [isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483649, var_1_6=10, var_1_7=1] [L70] CALL assume_abort_if_not(var_1_9 <= 4294967295) VAL [\old(cond)=1, isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483649, var_1_6=10, var_1_7=1] [L20] COND FALSE !(!cond) [L70] RET assume_abort_if_not(var_1_9 <= 4294967295) VAL [isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483649, var_1_6=10, var_1_7=1] [L71] CALL assume_abort_if_not(var_1_9 != 0) VAL [\old(cond)=1, isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483649, var_1_6=10, var_1_7=1, var_1_9=2] [L20] COND FALSE !(!cond) [L71] RET assume_abort_if_not(var_1_9 != 0) VAL [isInitial=1, var_1_11=44699, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483649, var_1_6=10, var_1_7=1, var_1_9=2] [L72] var_1_11 = __VERIFIER_nondet_ushort() [L73] CALL assume_abort_if_not(var_1_11 >= 32767) VAL [\old(cond)=1, isInitial=1, var_1_11=32767, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483649, var_1_6=10, var_1_7=1, var_1_9=2] [L20] COND FALSE !(!cond) [L73] RET assume_abort_if_not(var_1_11 >= 32767) VAL [isInitial=1, var_1_11=32767, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483649, var_1_6=10, var_1_7=1, var_1_9=2] [L74] CALL assume_abort_if_not(var_1_11 <= 65534) VAL [\old(cond)=1, isInitial=1, var_1_11=32767, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483649, var_1_6=10, var_1_7=1, var_1_9=2] [L20] COND FALSE !(!cond) [L74] RET assume_abort_if_not(var_1_11 <= 65534) VAL [isInitial=1, var_1_11=32767, var_1_13=2, var_1_15=0, var_1_16=16, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483649, var_1_6=10, var_1_7=1, var_1_9=2] [L75] var_1_16 = __VERIFIER_nondet_uchar() [L76] CALL assume_abort_if_not(var_1_16 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_11=32767, var_1_13=2, var_1_15=0, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483649, var_1_6=10, var_1_7=1, var_1_9=2] [L20] COND FALSE !(!cond) [L76] RET assume_abort_if_not(var_1_16 >= 0) VAL [isInitial=1, var_1_11=32767, var_1_13=2, var_1_15=0, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483649, var_1_6=10, var_1_7=1, var_1_9=2] [L77] CALL assume_abort_if_not(var_1_16 <= 254) VAL [\old(cond)=1, isInitial=1, var_1_11=32767, var_1_13=2, var_1_15=0, var_1_16=2, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483649, var_1_6=10, var_1_7=1, var_1_9=2] [L20] COND FALSE !(!cond) [L77] RET assume_abort_if_not(var_1_16 <= 254) VAL [isInitial=1, var_1_11=32767, var_1_13=2, var_1_15=0, var_1_16=2, var_1_17=65/8, var_1_1=9/10, var_1_3=2147483649, var_1_6=10, var_1_7=1, var_1_9=2] [L90] RET updateVariables() [L91] CALL step() [L36] var_1_15 = var_1_16 [L37] var_1_17 = var_1_5 [L38] EXPR var_1_15 & var_1_15 [L38] unsigned long int stepLocal_2 = var_1_3 * (var_1_15 & var_1_15); [L39] COND TRUE \read(var_1_7) [L40] COND FALSE !(stepLocal_2 <= (var_1_15 / var_1_9)) [L43] var_1_6 = (var_1_11 - ((((var_1_15) < 0 ) ? -(var_1_15) : (var_1_15)))) [L48] var_1_13 = var_1_15 [L49] signed long int stepLocal_1 = var_1_6 * var_1_15; [L50] unsigned char stepLocal_0 = var_1_15; [L51] COND TRUE stepLocal_0 <= (var_1_3 - var_1_6) [L52] COND FALSE !(var_1_3 < stepLocal_1) [L55] var_1_1 = var_1_5 [L91] RET step() [L92] CALL, EXPR property() [L82] EXPR ((var_1_15 <= (var_1_3 - var_1_6)) ? ((var_1_3 < (var_1_6 * var_1_15)) ? (var_1_1 == ((double) var_1_5)) : (var_1_1 == ((double) var_1_5))) : 1) && (var_1_7 ? (((var_1_3 * (var_1_15 & var_1_15)) <= (var_1_15 / var_1_9)) ? (var_1_6 == ((unsigned short int) (47342 - var_1_15))) : (var_1_6 == ((unsigned short int) (var_1_11 - ((((var_1_15) < 0 ) ? -(var_1_15) : (var_1_15))))))) : (var_1_6 == ((unsigned short int) (((((var_1_15) > (var_1_15)) ? (var_1_15) : (var_1_15))) + 1)))) [L82-L83] return (((((var_1_15 <= (var_1_3 - var_1_6)) ? ((var_1_3 < (var_1_6 * var_1_15)) ? (var_1_1 == ((double) var_1_5)) : (var_1_1 == ((double) var_1_5))) : 1) && (var_1_7 ? (((var_1_3 * (var_1_15 & var_1_15)) <= (var_1_15 / var_1_9)) ? (var_1_6 == ((unsigned short int) (47342 - var_1_15))) : (var_1_6 == ((unsigned short int) (var_1_11 - ((((var_1_15) < 0 ) ? -(var_1_15) : (var_1_15))))))) : (var_1_6 == ((unsigned short int) (((((var_1_15) > (var_1_15)) ? (var_1_15) : (var_1_15))) + 1))))) && (var_1_13 == ((signed short int) var_1_15))) && (var_1_15 == ((unsigned char) var_1_16))) && (var_1_17 == ((float) var_1_5)) ; [L92] RET, EXPR property() [L92] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, var_1_11=32767, var_1_13=2, var_1_15=2, var_1_16=2, var_1_17=2, var_1_1=2, var_1_3=2147483649, var_1_5=2, var_1_6=32765, var_1_7=1, var_1_9=2] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, var_1_11=32767, var_1_13=2, var_1_15=2, var_1_16=2, var_1_17=2, var_1_1=2, var_1_3=2147483649, var_1_5=2, var_1_6=32765, var_1_7=1, var_1_9=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 12, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-12-02 13:26:30,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-64.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8c033995a52b99c0430cec79c98c5775553fa5b7cf687f2e866f081cb29fa4f7 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:26:32,586 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:26:32,667 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-12-02 13:26:32,673 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:26:32,674 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:26:32,702 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:26:32,703 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:26:32,704 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:26:32,704 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:26:32,705 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:26:32,706 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:26:32,706 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:26:32,707 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:26:32,707 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:26:32,708 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:26:32,708 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:26:32,709 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:26:32,710 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 13:26:32,710 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 13:26:32,711 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 13:26:32,711 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:26:32,712 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 13:26:32,712 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:26:32,713 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 13:26:32,713 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 13:26:32,714 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 13:26:32,714 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 13:26:32,714 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 13:26:32,715 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 13:26:32,715 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:26:32,716 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:26:32,716 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 13:26:32,716 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:26:32,717 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:26:32,717 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:26:32,717 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:26:32,717 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:26:32,718 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 13:26:32,718 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 13:26:32,718 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 13:26:32,718 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:26:32,719 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 13:26:32,719 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:26:32,719 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:26:32,719 INFO L153 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c033995a52b99c0430cec79c98c5775553fa5b7cf687f2e866f081cb29fa4f7 [2023-12-02 13:26:33,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:26:33,028 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:26:33,030 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:26:33,031 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:26:33,032 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:26:33,033 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-64.i [2023-12-02 13:26:35,822 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:26:36,029 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:26:36,030 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-64.i [2023-12-02 13:26:36,037 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/data/e91411eb7/1112d4fda0a64a898e57b344a7c2b6a5/FLAG3895b2f27 [2023-12-02 13:26:36,050 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/data/e91411eb7/1112d4fda0a64a898e57b344a7c2b6a5 [2023-12-02 13:26:36,052 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:26:36,053 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:26:36,054 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:26:36,054 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:26:36,058 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:26:36,059 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:26:36" (1/1) ... [2023-12-02 13:26:36,060 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ce8687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:36, skipping insertion in model container [2023-12-02 13:26:36,060 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:26:36" (1/1) ... [2023-12-02 13:26:36,082 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:26:36,208 WARN L240 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_8443e6fb-be10-467c-b530-c544b8847e4f/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-64.i[915,928] [2023-12-02 13:26:36,244 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:26:36,260 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 13:26:36,271 WARN L240 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_8443e6fb-be10-467c-b530-c544b8847e4f/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-64.i[915,928] [2023-12-02 13:26:36,290 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:26:36,308 INFO L206 MainTranslator]: Completed translation [2023-12-02 13:26:36,309 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:36 WrapperNode [2023-12-02 13:26:36,309 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:26:36,310 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 13:26:36,310 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 13:26:36,310 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 13:26:36,316 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:36" (1/1) ... [2023-12-02 13:26:36,326 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:36" (1/1) ... [2023-12-02 13:26:36,350 INFO L138 Inliner]: procedures = 27, calls = 25, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 90 [2023-12-02 13:26:36,350 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 13:26:36,351 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 13:26:36,351 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 13:26:36,352 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 13:26:36,359 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:36" (1/1) ... [2023-12-02 13:26:36,359 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:36" (1/1) ... [2023-12-02 13:26:36,363 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:36" (1/1) ... [2023-12-02 13:26:36,364 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:36" (1/1) ... [2023-12-02 13:26:36,373 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:36" (1/1) ... [2023-12-02 13:26:36,376 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:36" (1/1) ... [2023-12-02 13:26:36,379 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:36" (1/1) ... [2023-12-02 13:26:36,381 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:36" (1/1) ... [2023-12-02 13:26:36,385 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 13:26:36,386 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 13:26:36,387 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 13:26:36,387 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 13:26:36,388 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:36" (1/1) ... [2023-12-02 13:26:36,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:26:36,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:26:36,415 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 13:26:36,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 13:26:36,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 13:26:36,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 13:26:36,452 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 13:26:36,452 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 13:26:36,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 13:26:36,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 13:26:36,523 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 13:26:36,525 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 13:26:37,038 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 13:26:37,089 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 13:26:37,089 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 13:26:37,090 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:26:37 BoogieIcfgContainer [2023-12-02 13:26:37,090 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 13:26:37,093 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 13:26:37,093 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 13:26:37,096 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 13:26:37,096 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:26:36" (1/3) ... [2023-12-02 13:26:37,097 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43e8b22a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:26:37, skipping insertion in model container [2023-12-02 13:26:37,097 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:36" (2/3) ... [2023-12-02 13:26:37,098 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43e8b22a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:26:37, skipping insertion in model container [2023-12-02 13:26:37,098 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:26:37" (3/3) ... [2023-12-02 13:26:37,099 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount25_file-64.i [2023-12-02 13:26:37,115 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 13:26:37,115 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 13:26:37,151 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 13:26:37,156 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@6e46616f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 13:26:37,156 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 13:26:37,160 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 22 states have internal predecessors, (30), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 13:26:37,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-02 13:26:37,171 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:26:37,172 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 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, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:26:37,173 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:26:37,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:26:37,178 INFO L85 PathProgramCache]: Analyzing trace with hash -795653600, now seen corresponding path program 1 times [2023-12-02 13:26:37,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:26:37,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [396567772] [2023-12-02 13:26:37,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:26:37,189 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:26:37,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:26:37,191 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 13:26:37,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-02 13:26:37,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:26:37,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 13:26:37,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:26:37,426 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2023-12-02 13:26:37,426 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:26:37,427 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:26:37,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [396567772] [2023-12-02 13:26:37,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [396567772] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:26:37,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:26:37,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:26:37,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756169973] [2023-12-02 13:26:37,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:26:37,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 13:26:37,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:26:37,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 13:26:37,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 13:26:37,462 INFO L87 Difference]: Start difference. First operand has 36 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 22 states have internal predecessors, (30), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-02 13:26:37,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:26:37,625 INFO L93 Difference]: Finished difference Result 69 states and 118 transitions. [2023-12-02 13:26:37,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 13:26:37,637 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 74 [2023-12-02 13:26:37,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:26:37,642 INFO L225 Difference]: With dead ends: 69 [2023-12-02 13:26:37,642 INFO L226 Difference]: Without dead ends: 34 [2023-12-02 13:26:37,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 13:26:37,648 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:26:37,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:26:37,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-12-02 13:26:37,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2023-12-02 13:26:37,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 13:26:37,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2023-12-02 13:26:37,685 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 74 [2023-12-02 13:26:37,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:26:37,686 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2023-12-02 13:26:37,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-02 13:26:37,686 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2023-12-02 13:26:37,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-02 13:26:37,690 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:26:37,690 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 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, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:26:37,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-02 13:26:37,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:26:37,895 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:26:37,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:26:37,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1930292064, now seen corresponding path program 1 times [2023-12-02 13:26:37,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:26:37,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [876625572] [2023-12-02 13:26:37,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:26:37,897 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:26:37,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:26:37,898 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 13:26:37,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-02 13:26:38,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:26:38,105 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 13:26:38,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:26:38,440 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 11 proven. 33 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-02 13:26:38,441 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:26:38,539 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:26:38,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [876625572] [2023-12-02 13:26:38,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [876625572] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:26:38,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1919053401] [2023-12-02 13:26:38,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:26:38,541 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 13:26:38,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 13:26:38,543 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 13:26:38,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-12-02 13:26:39,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:26:39,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 13:26:39,091 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:26:39,285 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 11 proven. 33 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-02 13:26:39,285 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:26:39,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1919053401] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:26:39,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709369722] [2023-12-02 13:26:39,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:26:39,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:26:39,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:26:39,326 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:26:39,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 13:26:39,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:26:39,476 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 13:26:39,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:26:39,660 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 11 proven. 33 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-02 13:26:39,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:26:39,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709369722] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:26:39,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 13:26:39,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2023-12-02 13:26:39,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341865628] [2023-12-02 13:26:39,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 13:26:39,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 13:26:39,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:26:39,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 13:26:39,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-02 13:26:39,699 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-02 13:26:40,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:26:40,647 INFO L93 Difference]: Finished difference Result 82 states and 113 transitions. [2023-12-02 13:26:40,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 13:26:40,657 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 74 [2023-12-02 13:26:40,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:26:40,658 INFO L225 Difference]: With dead ends: 82 [2023-12-02 13:26:40,659 INFO L226 Difference]: Without dead ends: 49 [2023-12-02 13:26:40,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-12-02 13:26:40,661 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 23 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 13:26:40,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 69 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 13:26:40,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-12-02 13:26:40,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 38. [2023-12-02 13:26:40,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 13:26:40,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 51 transitions. [2023-12-02 13:26:40,673 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 51 transitions. Word has length 74 [2023-12-02 13:26:40,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:26:40,674 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 51 transitions. [2023-12-02 13:26:40,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-02 13:26:40,675 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 51 transitions. [2023-12-02 13:26:40,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-02 13:26:40,676 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:26:40,676 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:26:40,688 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 13:26:40,880 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2023-12-02 13:26:41,081 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-02 13:26:41,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:26:41,278 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:26:41,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:26:41,279 INFO L85 PathProgramCache]: Analyzing trace with hash 281272175, now seen corresponding path program 1 times [2023-12-02 13:26:41,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:26:41,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1277687571] [2023-12-02 13:26:41,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:26:41,280 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:26:41,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:26:41,281 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 13:26:41,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-02 13:26:41,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:26:41,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 13:26:41,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:26:41,640 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 11 proven. 33 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-02 13:26:41,640 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:26:41,854 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:26:41,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1277687571] [2023-12-02 13:26:41,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1277687571] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:26:41,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1425001741] [2023-12-02 13:26:41,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:26:41,855 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 13:26:41,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 13:26:41,856 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 13:26:41,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-02 13:26:42,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:26:42,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 13:26:42,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:26:42,402 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 11 proven. 33 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-02 13:26:42,403 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:26:42,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1425001741] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:26:42,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695377744] [2023-12-02 13:26:42,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:26:42,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:26:42,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:26:42,471 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:26:42,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 13:26:42,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:26:42,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 13:26:42,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:26:43,153 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 44 proven. 30 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-12-02 13:26:43,154 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:26:43,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695377744] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:26:43,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 13:26:43,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 11] total 12 [2023-12-02 13:26:43,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571404077] [2023-12-02 13:26:43,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 13:26:43,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 13:26:43,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:26:43,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 13:26:43,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-12-02 13:26:43,740 INFO L87 Difference]: Start difference. First operand 38 states and 51 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-02 13:26:45,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:26:45,734 INFO L93 Difference]: Finished difference Result 86 states and 113 transitions. [2023-12-02 13:26:45,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 13:26:45,735 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 75 [2023-12-02 13:26:45,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:26:45,736 INFO L225 Difference]: With dead ends: 86 [2023-12-02 13:26:45,737 INFO L226 Difference]: Without dead ends: 49 [2023-12-02 13:26:45,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=159, Invalid=393, Unknown=0, NotChecked=0, Total=552 [2023-12-02 13:26:45,738 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 73 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-02 13:26:45,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 74 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-02 13:26:45,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-12-02 13:26:45,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 38. [2023-12-02 13:26:45,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 13:26:45,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 50 transitions. [2023-12-02 13:26:45,745 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 50 transitions. Word has length 75 [2023-12-02 13:26:45,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:26:45,746 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 50 transitions. [2023-12-02 13:26:45,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-02 13:26:45,746 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 50 transitions. [2023-12-02 13:26:45,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-02 13:26:45,747 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:26:45,747 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:26:45,752 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-12-02 13:26:45,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-02 13:26:46,151 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2023-12-02 13:26:46,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 13:26:46,348 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:26:46,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:26:46,349 INFO L85 PathProgramCache]: Analyzing trace with hash 281331757, now seen corresponding path program 1 times [2023-12-02 13:26:46,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:26:46,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [512379386] [2023-12-02 13:26:46,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:26:46,349 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:26:46,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:26:46,350 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 13:26:46,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-02 13:26:46,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:26:46,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 13:26:46,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:27:17,557 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 87 proven. 27 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-12-02 13:27:17,557 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:28:39,519 WARN L293 SmtUtils]: Spent 24.83s on a formula simplification that was a NOOP. DAG size: 114 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:29:48,465 WARN L293 SmtUtils]: Spent 40.86s on a formula simplification. DAG size of input: 104 DAG size of output: 103 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:31:00,383 WARN L293 SmtUtils]: Spent 23.45s on a formula simplification that was a NOOP. DAG size: 97 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:31:24,860 WARN L293 SmtUtils]: Spent 7.46s on a formula simplification that was a NOOP. DAG size: 39 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:32:01,132 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-12-02 13:32:01,132 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:32:01,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [512379386] [2023-12-02 13:32:01,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [512379386] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:32:01,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [569205067] [2023-12-02 13:32:01,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:32:01,132 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 13:32:01,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 13:32:01,134 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 13:32:01,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-12-02 13:32:01,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:32:01,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-02 13:32:01,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:33:16,357 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 87 proven. 27 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-12-02 13:33:16,357 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:35:14,064 WARN L293 SmtUtils]: Spent 20.93s on a formula simplification that was a NOOP. DAG size: 107 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:36:20,233 WARN L293 SmtUtils]: Spent 34.37s on a formula simplification. DAG size of input: 98 DAG size of output: 97 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:37:26,918 WARN L293 SmtUtils]: Spent 19.23s on a formula simplification that was a NOOP. DAG size: 91 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:37:53,049 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-12-02 13:37:53,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [569205067] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:37:53,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196210954] [2023-12-02 13:37:53,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:37:53,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:37:53,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:37:53,051 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:37:53,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8443e6fb-be10-467c-b530-c544b8847e4f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 13:37:53,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:37:53,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-02 13:37:53,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:38:58,790 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 120 proven. 36 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-12-02 13:38:58,790 INFO L327 TraceCheckSpWp]: Computing backward predicates...