./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test4-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/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_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 87dd09ebbd7004650762949ef44f5f810b259dfe76e04f61193dc727167eb435 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 16:54:33,453 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:54:33,521 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2023-12-02 16:54:33,526 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:54:33,527 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:54:33,553 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:54:33,554 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:54:33,555 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:54:33,555 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:54:33,556 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:54:33,556 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:54:33,557 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:54:33,557 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:54:33,558 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 16:54:33,558 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:54:33,559 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:54:33,559 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 16:54:33,560 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 16:54:33,561 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:54:33,561 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 16:54:33,562 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 16:54:33,562 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 16:54:33,563 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 16:54:33,563 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 16:54:33,564 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:54:33,564 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 16:54:33,565 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 16:54:33,565 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 16:54:33,566 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 16:54:33,566 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:54:33,566 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 16:54:33,567 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 16:54:33,567 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 16:54:33,568 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:54:33,568 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 16:54:33,568 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 16:54:33,569 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 16:54:33,569 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 16:54:33,569 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 16:54:33,569 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:54:33,569 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:54:33,570 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 16:54:33,570 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:54:33,570 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:54:33,570 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:54:33,571 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:54:33,571 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 16:54:33,571 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 16:54:33,571 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:54:33,571 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:54:33,571 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:54:33,572 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_7423119b-77a8-49c0-8451-9306fc832bec/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87dd09ebbd7004650762949ef44f5f810b259dfe76e04f61193dc727167eb435 [2023-12-02 16:54:33,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:54:33,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:54:33,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:54:33,812 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:54:33,812 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:54:33,813 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test4-3.i [2023-12-02 16:54:36,676 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:54:36,954 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:54:36,955 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test4-3.i [2023-12-02 16:54:36,976 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/data/f92e04f77/97f10f4311ba4db382deed4805f958ff/FLAGdee2644bc [2023-12-02 16:54:36,989 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/data/f92e04f77/97f10f4311ba4db382deed4805f958ff [2023-12-02 16:54:36,992 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:54:36,993 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:54:36,995 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:54:36,995 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:54:37,000 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:54:37,001 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:54:36" (1/1) ... [2023-12-02 16:54:37,003 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24869e1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:54:37, skipping insertion in model container [2023-12-02 16:54:37,003 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:54:36" (1/1) ... [2023-12-02 16:54:37,090 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:54:37,567 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:54:37,579 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-12-02 16:54:37,579 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7230547 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:54:37, skipping insertion in model container [2023-12-02 16:54:37,579 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 16:54:37,580 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-12-02 16:54:37,581 INFO L158 Benchmark]: Toolchain (without parser) took 587.33ms. Allocated memory is still 151.0MB. Free memory was 109.3MB in the beginning and 87.7MB in the end (delta: 21.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-12-02 16:54:37,582 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 98.6MB. Free memory is still 47.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 16:54:37,583 INFO L158 Benchmark]: CACSL2BoogieTranslator took 585.00ms. Allocated memory is still 151.0MB. Free memory was 109.3MB in the beginning and 87.7MB in the end (delta: 21.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-12-02 16:54:37,584 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 98.6MB. Free memory is still 47.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 585.00ms. Allocated memory is still 151.0MB. Free memory was 109.3MB in the beginning and 87.7MB in the end (delta: 21.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 740]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. 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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/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_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 87dd09ebbd7004650762949ef44f5f810b259dfe76e04f61193dc727167eb435 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 16:54:39,464 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:54:39,543 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2023-12-02 16:54:39,550 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:54:39,551 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:54:39,586 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:54:39,587 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:54:39,588 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:54:39,588 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:54:39,589 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:54:39,589 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:54:39,590 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:54:39,590 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:54:39,591 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:54:39,591 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:54:39,592 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:54:39,593 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 16:54:39,593 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 16:54:39,594 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:54:39,594 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 16:54:39,595 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 16:54:39,596 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 16:54:39,596 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 16:54:39,597 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:54:39,597 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 16:54:39,597 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 16:54:39,598 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 16:54:39,598 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:54:39,599 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 16:54:39,599 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 16:54:39,600 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 16:54:39,600 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 16:54:39,600 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 16:54:39,600 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 16:54:39,601 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 16:54:39,601 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:54:39,601 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:54:39,601 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 16:54:39,602 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 16:54:39,602 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:54:39,602 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:54:39,602 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:54:39,603 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:54:39,603 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 16:54:39,603 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 16:54:39,603 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:54:39,603 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:54:39,604 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:54:39,604 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_7423119b-77a8-49c0-8451-9306fc832bec/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87dd09ebbd7004650762949ef44f5f810b259dfe76e04f61193dc727167eb435 [2023-12-02 16:54:39,885 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:54:39,904 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:54:39,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:54:39,907 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:54:39,907 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:54:39,909 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test4-3.i [2023-12-02 16:54:42,781 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:54:43,117 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:54:43,118 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test4-3.i [2023-12-02 16:54:43,140 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/data/daef6ac33/387170d42afc497cb029d6fb7d80b4f2/FLAGa84ffe7c8 [2023-12-02 16:54:43,158 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/data/daef6ac33/387170d42afc497cb029d6fb7d80b4f2 [2023-12-02 16:54:43,161 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:54:43,163 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:54:43,164 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:54:43,164 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:54:43,170 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:54:43,171 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:54:43" (1/1) ... [2023-12-02 16:54:43,172 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c13e96a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:54:43, skipping insertion in model container [2023-12-02 16:54:43,172 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:54:43" (1/1) ... [2023-12-02 16:54:43,253 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:54:43,863 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:54:43,877 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-12-02 16:54:43,891 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:54:43,985 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:54:43,989 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 16:54:44,061 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:54:44,112 INFO L206 MainTranslator]: Completed translation [2023-12-02 16:54:44,112 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:54:44 WrapperNode [2023-12-02 16:54:44,112 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 16:54:44,113 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 16:54:44,114 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 16:54:44,114 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 16:54:44,121 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:54:44" (1/1) ... [2023-12-02 16:54:44,155 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:54:44" (1/1) ... [2023-12-02 16:54:44,217 INFO L138 Inliner]: procedures = 180, calls = 439, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1422 [2023-12-02 16:54:44,217 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 16:54:44,218 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 16:54:44,218 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 16:54:44,218 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 16:54:44,228 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:54:44" (1/1) ... [2023-12-02 16:54:44,228 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:54:44" (1/1) ... [2023-12-02 16:54:44,239 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:54:44" (1/1) ... [2023-12-02 16:54:44,240 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:54:44" (1/1) ... [2023-12-02 16:54:44,311 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:54:44" (1/1) ... [2023-12-02 16:54:44,324 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:54:44" (1/1) ... [2023-12-02 16:54:44,331 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:54:44" (1/1) ... [2023-12-02 16:54:44,351 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:54:44" (1/1) ... [2023-12-02 16:54:44,366 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 16:54:44,367 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 16:54:44,368 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 16:54:44,368 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 16:54:44,369 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:54:44" (1/1) ... [2023-12-02 16:54:44,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:54:44,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:54:44,408 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 16:54:44,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 16:54:44,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-12-02 16:54:44,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 16:54:44,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 16:54:44,458 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 16:54:44,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 16:54:44,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 16:54:44,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 16:54:44,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 16:54:44,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 16:54:44,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 16:54:44,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 16:54:44,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 16:54:44,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 16:54:44,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 16:54:44,713 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 16:54:44,715 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 16:54:56,546 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 16:54:56,588 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 16:54:56,588 INFO L309 CfgBuilder]: Removed 77 assume(true) statements. [2023-12-02 16:54:56,589 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:54:56 BoogieIcfgContainer [2023-12-02 16:54:56,589 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 16:54:56,592 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 16:54:56,592 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 16:54:56,595 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 16:54:56,595 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:54:43" (1/3) ... [2023-12-02 16:54:56,596 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1f1202 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:54:56, skipping insertion in model container [2023-12-02 16:54:56,596 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:54:44" (2/3) ... [2023-12-02 16:54:56,596 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1f1202 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:54:56, skipping insertion in model container [2023-12-02 16:54:56,597 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:54:56" (3/3) ... [2023-12-02 16:54:56,598 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_nondet_test4-3.i [2023-12-02 16:54:56,614 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 16:54:56,615 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 16:54:56,662 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 16:54:56,668 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@2604bca2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 16:54:56,668 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 16:54:56,674 INFO L276 IsEmpty]: Start isEmpty. Operand has 246 states, 236 states have (on average 1.6694915254237288) internal successors, (394), 238 states have internal predecessors, (394), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 16:54:56,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 16:54:56,680 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:54:56,680 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 16:54:56,681 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 16:54:56,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:54:56,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1012380, now seen corresponding path program 1 times [2023-12-02 16:54:56,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:54:56,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [783428615] [2023-12-02 16:54:56,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:54:56,697 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 16:54:56,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:54:56,699 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/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 16:54:56,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/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 16:54:56,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:54:56,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 16:54:56,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:54:56,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:54:56,944 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:54:56,945 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:54:56,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [783428615] [2023-12-02 16:54:56,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [783428615] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:54:56,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:54:56,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 16:54:56,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625103383] [2023-12-02 16:54:56,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:54:56,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:54:56,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:54:56,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:54:56,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:54:56,983 INFO L87 Difference]: Start difference. First operand has 246 states, 236 states have (on average 1.6694915254237288) internal successors, (394), 238 states have internal predecessors, (394), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:54:59,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:55:01,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:55:01,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:55:01,630 INFO L93 Difference]: Finished difference Result 308 states and 403 transitions. [2023-12-02 16:55:01,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:55:01,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-12-02 16:55:01,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:55:01,642 INFO L225 Difference]: With dead ends: 308 [2023-12-02 16:55:01,642 INFO L226 Difference]: Without dead ends: 305 [2023-12-02 16:55:01,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:55:01,647 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 81 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:55:01,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 642 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 2 Unknown, 0 Unchecked, 4.6s Time] [2023-12-02 16:55:01,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2023-12-02 16:55:01,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 255. [2023-12-02 16:55:01,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 246 states have (on average 1.3048780487804879) internal successors, (321), 247 states have internal predecessors, (321), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 16:55:01,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 333 transitions. [2023-12-02 16:55:01,714 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 333 transitions. Word has length 3 [2023-12-02 16:55:01,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:55:01,715 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 333 transitions. [2023-12-02 16:55:01,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:01,715 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 333 transitions. [2023-12-02 16:55:01,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 16:55:01,716 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:55:01,717 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:55:01,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/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 16:55:01,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/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 16:55:01,918 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 16:55:01,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:55:01,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1231380377, now seen corresponding path program 1 times [2023-12-02 16:55:01,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:55:01,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [572919485] [2023-12-02 16:55:01,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:55:01,920 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 16:55:01,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:55:01,921 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/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 16:55:01,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/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 16:55:02,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:55:02,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 16:55:02,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:55:02,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:55:02,217 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:55:02,218 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:55:02,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [572919485] [2023-12-02 16:55:02,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [572919485] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:55:02,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:55:02,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:55:02,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708786180] [2023-12-02 16:55:02,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:55:02,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:55:02,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:55:02,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:55:02,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:55:02,222 INFO L87 Difference]: Start difference. First operand 255 states and 333 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:04,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:55:07,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:55:08,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:55:12,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:55:14,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:55:14,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:55:14,821 INFO L93 Difference]: Finished difference Result 428 states and 558 transitions. [2023-12-02 16:55:14,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 16:55:14,824 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-02 16:55:14,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:55:14,828 INFO L225 Difference]: With dead ends: 428 [2023-12-02 16:55:14,828 INFO L226 Difference]: Without dead ends: 428 [2023-12-02 16:55:14,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:55:14,830 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 244 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 5 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2023-12-02 16:55:14,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 854 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 79 Invalid, 4 Unknown, 0 Unchecked, 12.5s Time] [2023-12-02 16:55:14,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2023-12-02 16:55:14,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 375. [2023-12-02 16:55:14,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 363 states have (on average 1.2947658402203857) internal successors, (470), 364 states have internal predecessors, (470), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 16:55:14,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 488 transitions. [2023-12-02 16:55:14,861 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 488 transitions. Word has length 10 [2023-12-02 16:55:14,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:55:14,861 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 488 transitions. [2023-12-02 16:55:14,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:14,862 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 488 transitions. [2023-12-02 16:55:14,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-02 16:55:14,863 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:55:14,863 INFO L195 NwaCegarLoop]: trace histogram [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 16:55:14,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/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)] Forceful destruction successful, exit code 0 [2023-12-02 16:55:15,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/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 16:55:15,064 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 16:55:15,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:55:15,065 INFO L85 PathProgramCache]: Analyzing trace with hash -895186295, now seen corresponding path program 1 times [2023-12-02 16:55:15,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:55:15,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [730359350] [2023-12-02 16:55:15,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:55:15,066 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 16:55:15,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:55:15,067 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/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 16:55:15,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/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 (4)] Waiting until timeout for monitored process [2023-12-02 16:55:15,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:55:15,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:55:15,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:55:15,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 16:55:15,323 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:55:15,323 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:55:15,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [730359350] [2023-12-02 16:55:15,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [730359350] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:55:15,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:55:15,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 16:55:15,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865869043] [2023-12-02 16:55:15,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:55:15,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:55:15,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:55:15,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:55:15,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:55:15,325 INFO L87 Difference]: Start difference. First operand 375 states and 488 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:16,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:55:16,143 INFO L93 Difference]: Finished difference Result 426 states and 554 transitions. [2023-12-02 16:55:16,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:55:16,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-12-02 16:55:16,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:55:16,152 INFO L225 Difference]: With dead ends: 426 [2023-12-02 16:55:16,152 INFO L226 Difference]: Without dead ends: 426 [2023-12-02 16:55:16,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:55:16,153 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 127 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 16:55:16,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 585 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 16:55:16,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2023-12-02 16:55:16,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 373. [2023-12-02 16:55:16,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 361 states have (on average 1.290858725761773) internal successors, (466), 362 states have internal predecessors, (466), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 16:55:16,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 484 transitions. [2023-12-02 16:55:16,169 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 484 transitions. Word has length 25 [2023-12-02 16:55:16,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:55:16,169 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 484 transitions. [2023-12-02 16:55:16,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:16,170 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 484 transitions. [2023-12-02 16:55:16,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-02 16:55:16,171 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:55:16,171 INFO L195 NwaCegarLoop]: trace histogram [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 16:55:16,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/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 (4)] Forceful destruction successful, exit code 0 [2023-12-02 16:55:16,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/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 16:55:16,372 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 16:55:16,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:55:16,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1710837259, now seen corresponding path program 1 times [2023-12-02 16:55:16,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:55:16,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1556307149] [2023-12-02 16:55:16,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:55:16,373 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 16:55:16,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:55:16,374 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/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 16:55:16,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/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 (5)] Waiting until timeout for monitored process [2023-12-02 16:55:16,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:55:16,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 16:55:16,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:55:16,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:55:16,638 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:55:16,638 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:55:16,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1556307149] [2023-12-02 16:55:16,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1556307149] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:55:16,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:55:16,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:55:16,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731853478] [2023-12-02 16:55:16,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:55:16,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:55:16,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:55:16,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:55:16,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:55:16,641 INFO L87 Difference]: Start difference. First operand 373 states and 484 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:19,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:55:21,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:55:24,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:55:26,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:55:31,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:55:31,572 INFO L93 Difference]: Finished difference Result 426 states and 553 transitions. [2023-12-02 16:55:31,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 16:55:31,576 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-12-02 16:55:31,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:55:31,578 INFO L225 Difference]: With dead ends: 426 [2023-12-02 16:55:31,578 INFO L226 Difference]: Without dead ends: 420 [2023-12-02 16:55:31,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:55:31,580 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 133 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 6 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2023-12-02 16:55:31,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 1143 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 200 Invalid, 4 Unknown, 0 Unchecked, 14.9s Time] [2023-12-02 16:55:31,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2023-12-02 16:55:31,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 367. [2023-12-02 16:55:31,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 355 states have (on average 1.2929577464788733) internal successors, (459), 356 states have internal predecessors, (459), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 16:55:31,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 477 transitions. [2023-12-02 16:55:31,597 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 477 transitions. Word has length 25 [2023-12-02 16:55:31,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:55:31,597 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 477 transitions. [2023-12-02 16:55:31,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:55:31,598 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 477 transitions. [2023-12-02 16:55:31,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-02 16:55:31,604 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:55:31,604 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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 16:55:31,606 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/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 (5)] Ended with exit code 0 [2023-12-02 16:55:31,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/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 16:55:31,805 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 16:55:31,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:55:31,806 INFO L85 PathProgramCache]: Analyzing trace with hash 2008452670, now seen corresponding path program 1 times [2023-12-02 16:55:31,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:55:31,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1419520584] [2023-12-02 16:55:31,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:55:31,807 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 16:55:31,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:55:31,808 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/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 16:55:31,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/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 16:55:32,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:55:32,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 771 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:55:32,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:55:32,695 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 16:55:32,695 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:55:32,695 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:55:32,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1419520584] [2023-12-02 16:55:32,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1419520584] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:55:32,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:55:32,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:55:32,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4470274] [2023-12-02 16:55:32,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:55:32,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:55:32,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:55:32,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:55:32,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:55:32,699 INFO L87 Difference]: Start difference. First operand 367 states and 477 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 16:55:32,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:55:32,839 INFO L93 Difference]: Finished difference Result 375 states and 469 transitions. [2023-12-02 16:55:32,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:55:32,840 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 142 [2023-12-02 16:55:32,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:55:32,842 INFO L225 Difference]: With dead ends: 375 [2023-12-02 16:55:32,842 INFO L226 Difference]: Without dead ends: 375 [2023-12-02 16:55:32,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:55:32,843 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 43 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:55:32,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 825 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:55:32,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2023-12-02 16:55:32,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 373. [2023-12-02 16:55:32,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 361 states have (on average 1.2437673130193905) internal successors, (449), 362 states have internal predecessors, (449), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 16:55:32,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 467 transitions. [2023-12-02 16:55:32,857 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 467 transitions. Word has length 142 [2023-12-02 16:55:32,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:55:32,857 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 467 transitions. [2023-12-02 16:55:32,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 16:55:32,858 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 467 transitions. [2023-12-02 16:55:32,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-02 16:55:32,860 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:55:32,861 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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 16:55:32,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/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 16:55:33,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/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 16:55:33,064 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 16:55:33,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:55:33,065 INFO L85 PathProgramCache]: Analyzing trace with hash -2059728660, now seen corresponding path program 1 times [2023-12-02 16:55:33,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:55:33,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1449484405] [2023-12-02 16:55:33,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:55:33,067 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 16:55:33,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:55:33,068 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/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 16:55:33,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/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 (7)] Waiting until timeout for monitored process [2023-12-02 16:55:33,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:55:33,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 762 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 16:55:33,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:55:34,044 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 16:55:34,044 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:55:34,044 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:55:34,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1449484405] [2023-12-02 16:55:34,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1449484405] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:55:34,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:55:34,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:55:34,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382671838] [2023-12-02 16:55:34,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:55:34,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:55:34,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:55:34,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:55:34,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:55:34,048 INFO L87 Difference]: Start difference. First operand 373 states and 467 transitions. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 16:55:34,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:55:34,153 INFO L93 Difference]: Finished difference Result 361 states and 447 transitions. [2023-12-02 16:55:34,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:55:34,154 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 142 [2023-12-02 16:55:34,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:55:34,157 INFO L225 Difference]: With dead ends: 361 [2023-12-02 16:55:34,157 INFO L226 Difference]: Without dead ends: 361 [2023-12-02 16:55:34,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:55:34,159 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 15 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:55:34,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 826 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:55:34,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2023-12-02 16:55:34,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2023-12-02 16:55:34,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 349 states have (on average 1.2292263610315186) internal successors, (429), 350 states have internal predecessors, (429), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 16:55:34,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 447 transitions. [2023-12-02 16:55:34,175 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 447 transitions. Word has length 142 [2023-12-02 16:55:34,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:55:34,176 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 447 transitions. [2023-12-02 16:55:34,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 16:55:34,176 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 447 transitions. [2023-12-02 16:55:34,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-02 16:55:34,179 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:55:34,179 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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 16:55:34,193 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/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 (7)] Ended with exit code 0 [2023-12-02 16:55:34,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/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 16:55:34,384 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 16:55:34,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:55:34,385 INFO L85 PathProgramCache]: Analyzing trace with hash 94639154, now seen corresponding path program 1 times [2023-12-02 16:55:34,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:55:34,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1993818679] [2023-12-02 16:55:34,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:55:34,386 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 16:55:34,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:55:34,387 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/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 16:55:34,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/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)] Waiting until timeout for monitored process [2023-12-02 16:55:35,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:55:35,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:55:35,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:55:35,265 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-02 16:55:35,265 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:55:35,265 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:55:35,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1993818679] [2023-12-02 16:55:35,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1993818679] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:55:35,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:55:35,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:55:35,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130666864] [2023-12-02 16:55:35,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:55:35,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:55:35,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:55:35,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:55:35,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:55:35,269 INFO L87 Difference]: Start difference. First operand 361 states and 447 transitions. Second operand has 4 states, 3 states have (on average 43.333333333333336) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 16:55:35,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:55:35,370 INFO L93 Difference]: Finished difference Result 363 states and 452 transitions. [2023-12-02 16:55:35,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:55:35,371 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 43.333333333333336) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 142 [2023-12-02 16:55:35,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:55:35,374 INFO L225 Difference]: With dead ends: 363 [2023-12-02 16:55:35,374 INFO L226 Difference]: Without dead ends: 363 [2023-12-02 16:55:35,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:55:35,376 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 1 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:55:35,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 878 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:55:35,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2023-12-02 16:55:35,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2023-12-02 16:55:35,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 350 states have (on average 1.2314285714285715) internal successors, (431), 352 states have internal predecessors, (431), 9 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-12-02 16:55:35,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 452 transitions. [2023-12-02 16:55:35,390 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 452 transitions. Word has length 142 [2023-12-02 16:55:35,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:55:35,391 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 452 transitions. [2023-12-02 16:55:35,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 43.333333333333336) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 16:55:35,391 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 452 transitions. [2023-12-02 16:55:35,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-02 16:55:35,394 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:55:35,394 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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 16:55:35,406 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/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)] Ended with exit code 0 [2023-12-02 16:55:35,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/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 16:55:35,598 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 16:55:35,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:55:35,599 INFO L85 PathProgramCache]: Analyzing trace with hash 544603410, now seen corresponding path program 1 times [2023-12-02 16:55:35,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:55:35,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1798618371] [2023-12-02 16:55:35,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:55:35,600 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 16:55:35,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:55:35,601 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/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 16:55:35,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/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 16:55:36,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:55:36,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 809 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 16:55:36,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:55:36,454 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-02 16:55:36,454 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:55:36,606 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 16:55:36,606 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:55:36,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1798618371] [2023-12-02 16:55:36,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1798618371] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:55:36,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [593392540] [2023-12-02 16:55:36,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:55:36,607 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:55:36,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:55:36,609 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:55:36,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-12-02 16:55:37,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:55:37,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 809 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 16:55:37,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:55:37,608 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 16:55:37,609 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:55:37,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [593392540] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:55:37,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 16:55:37,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2023-12-02 16:55:37,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262049300] [2023-12-02 16:55:37,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:55:37,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:55:37,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:55:37,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:55:37,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-02 16:55:37,612 INFO L87 Difference]: Start difference. First operand 363 states and 452 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 16:55:37,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:55:37,744 INFO L93 Difference]: Finished difference Result 405 states and 494 transitions. [2023-12-02 16:55:37,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:55:37,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 146 [2023-12-02 16:55:37,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:55:37,749 INFO L225 Difference]: With dead ends: 405 [2023-12-02 16:55:37,749 INFO L226 Difference]: Without dead ends: 405 [2023-12-02 16:55:37,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 428 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-02 16:55:37,750 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 5 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:55:37,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 542 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:55:37,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2023-12-02 16:55:37,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 403. [2023-12-02 16:55:37,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 390 states have (on average 1.2076923076923076) internal successors, (471), 392 states have internal predecessors, (471), 9 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-12-02 16:55:37,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 492 transitions. [2023-12-02 16:55:37,763 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 492 transitions. Word has length 146 [2023-12-02 16:55:37,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:55:37,763 INFO L495 AbstractCegarLoop]: Abstraction has 403 states and 492 transitions. [2023-12-02 16:55:37,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 16:55:37,764 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 492 transitions. [2023-12-02 16:55:37,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-02 16:55:37,766 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:55:37,766 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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 16:55:37,780 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/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)] Ended with exit code 0 [2023-12-02 16:55:37,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2023-12-02 16:55:38,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/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=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 16:55:38,167 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 16:55:38,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:55:38,168 INFO L85 PathProgramCache]: Analyzing trace with hash 110874324, now seen corresponding path program 1 times [2023-12-02 16:55:38,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:55:38,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1508765342] [2023-12-02 16:55:38,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:55:38,169 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 16:55:38,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:55:38,170 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/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 16:55:38,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/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 (11)] Waiting until timeout for monitored process [2023-12-02 16:55:38,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:55:39,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 16:55:39,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:55:39,060 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-02 16:55:39,060 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:55:39,166 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 16:55:39,166 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:55:39,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1508765342] [2023-12-02 16:55:39,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1508765342] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:55:39,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1757810654] [2023-12-02 16:55:39,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:55:39,167 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:55:39,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:55:39,168 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:55:39,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2023-12-02 16:55:40,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:55:40,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 16:55:40,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:55:40,159 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 16:55:40,159 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:55:40,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1757810654] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:55:40,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 16:55:40,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2023-12-02 16:55:40,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801045716] [2023-12-02 16:55:40,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:55:40,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:55:40,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:55:40,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:55:40,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-02 16:55:40,162 INFO L87 Difference]: Start difference. First operand 403 states and 492 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 16:55:40,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:55:40,301 INFO L93 Difference]: Finished difference Result 371 states and 438 transitions. [2023-12-02 16:55:40,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:55:40,303 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 146 [2023-12-02 16:55:40,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:55:40,306 INFO L225 Difference]: With dead ends: 371 [2023-12-02 16:55:40,306 INFO L226 Difference]: Without dead ends: 371 [2023-12-02 16:55:40,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 427 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-02 16:55:40,307 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 39 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:55:40,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 780 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:55:40,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2023-12-02 16:55:40,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 369. [2023-12-02 16:55:40,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 356 states have (on average 1.1657303370786516) internal successors, (415), 358 states have internal predecessors, (415), 9 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-12-02 16:55:40,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 436 transitions. [2023-12-02 16:55:40,322 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 436 transitions. Word has length 146 [2023-12-02 16:55:40,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:55:40,323 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 436 transitions. [2023-12-02 16:55:40,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 16:55:40,324 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 436 transitions. [2023-12-02 16:55:40,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-02 16:55:40,326 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:55:40,326 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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 16:55:40,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/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 (11)] Ended with exit code 0 [2023-12-02 16:55:40,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2023-12-02 16:55:40,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/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=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 16:55:40,727 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 16:55:40,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:55:40,727 INFO L85 PathProgramCache]: Analyzing trace with hash -793230074, now seen corresponding path program 1 times [2023-12-02 16:55:40,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:55:40,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1933055642] [2023-12-02 16:55:40,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:55:40,729 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 16:55:40,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:55:40,730 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/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 16:55:40,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/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 (13)] Waiting until timeout for monitored process [2023-12-02 16:55:41,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:55:41,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 16:55:41,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:55:41,755 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-02 16:55:41,755 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:55:41,857 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 16:55:41,857 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:55:41,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1933055642] [2023-12-02 16:55:41,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1933055642] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:55:41,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1424698608] [2023-12-02 16:55:41,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:55:41,858 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:55:41,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:55:41,859 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:55:41,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2023-12-02 16:55:43,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:55:43,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 16:55:43,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:55:43,322 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-02 16:55:43,323 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:55:43,379 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 16:55:43,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1424698608] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:55:43,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009277600] [2023-12-02 16:55:43,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:55:43,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:55:43,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:55:43,381 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:55:43,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-02 16:55:44,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:55:44,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 16:55:44,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:55:44,308 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 16:55:44,308 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:55:44,436 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 16:55:44,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009277600] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:55:44,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 16:55:44,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 11 [2023-12-02 16:55:44,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085641527] [2023-12-02 16:55:44,437 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 16:55:44,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 16:55:44,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:55:44,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 16:55:44,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-12-02 16:55:44,439 INFO L87 Difference]: Start difference. First operand 369 states and 436 transitions. Second operand has 11 states, 8 states have (on average 17.875) internal successors, (143), 11 states have internal predecessors, (143), 2 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-02 16:55:44,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:55:44,914 INFO L93 Difference]: Finished difference Result 381 states and 459 transitions. [2023-12-02 16:55:44,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:55:44,915 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 17.875) internal successors, (143), 11 states have internal predecessors, (143), 2 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 146 [2023-12-02 16:55:44,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:55:44,918 INFO L225 Difference]: With dead ends: 381 [2023-12-02 16:55:44,919 INFO L226 Difference]: Without dead ends: 381 [2023-12-02 16:55:44,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 881 GetRequests, 861 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=306, Unknown=0, NotChecked=0, Total=462 [2023-12-02 16:55:44,920 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 17 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1375 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:55:44,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1375 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 16:55:44,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2023-12-02 16:55:44,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 379. [2023-12-02 16:55:44,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 365 states have (on average 1.1835616438356165) internal successors, (432), 367 states have internal predecessors, (432), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-12-02 16:55:44,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 453 transitions. [2023-12-02 16:55:44,938 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 453 transitions. Word has length 146 [2023-12-02 16:55:44,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:55:44,939 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 453 transitions. [2023-12-02 16:55:44,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 17.875) internal successors, (143), 11 states have internal predecessors, (143), 2 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-02 16:55:44,939 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 453 transitions. [2023-12-02 16:55:44,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-02 16:55:44,942 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:55:44,942 INFO L195 NwaCegarLoop]: trace histogram [16, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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 16:55:44,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-02 16:55:45,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/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 (13)] Forceful destruction successful, exit code 0 [2023-12-02 16:55:45,352 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2023-12-02 16:55:45,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/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=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 16:55:45,543 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 16:55:45,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:55:45,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1713333978, now seen corresponding path program 2 times [2023-12-02 16:55:45,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:55:45,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1043770806] [2023-12-02 16:55:45,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 16:55:45,545 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 16:55:45,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:55:45,545 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/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 16:55:45,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/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 (16)] Waiting until timeout for monitored process [2023-12-02 16:55:46,375 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 16:55:46,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:55:46,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 935 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 16:55:46,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:55:46,501 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 82 proven. 10 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2023-12-02 16:55:46,501 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:55:46,781 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 1 proven. 88 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2023-12-02 16:55:46,781 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:55:46,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1043770806] [2023-12-02 16:55:46,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1043770806] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:55:46,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1107968719] [2023-12-02 16:55:46,782 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 16:55:46,782 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:55:46,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:55:46,783 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:55:46,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2023-12-02 16:55:48,243 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 16:55:48,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:55:48,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 935 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 16:55:48,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:55:48,321 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 82 proven. 10 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2023-12-02 16:55:48,322 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:55:48,419 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 1 proven. 88 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2023-12-02 16:55:48,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1107968719] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:55:48,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505118833] [2023-12-02 16:55:48,420 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 16:55:48,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:55:48,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:55:48,421 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:55:48,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-02 16:55:49,319 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 16:55:49,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:55:49,355 INFO L262 TraceCheckSpWp]: Trace formula consists of 935 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 16:55:49,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:55:49,437 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 82 proven. 10 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2023-12-02 16:55:49,437 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:55:49,715 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 1 proven. 88 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2023-12-02 16:55:49,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505118833] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:55:49,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 16:55:49,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 20 [2023-12-02 16:55:49,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672873607] [2023-12-02 16:55:49,717 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 16:55:49,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-02 16:55:49,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:55:49,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-02 16:55:49,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2023-12-02 16:55:49,720 INFO L87 Difference]: Start difference. First operand 379 states and 453 transitions. Second operand has 20 states, 17 states have (on average 8.882352941176471) internal successors, (151), 20 states have internal predecessors, (151), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 16:55:50,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:55:50,768 INFO L93 Difference]: Finished difference Result 392 states and 476 transitions. [2023-12-02 16:55:50,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-02 16:55:50,769 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 8.882352941176471) internal successors, (151), 20 states have internal predecessors, (151), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 158 [2023-12-02 16:55:50,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:55:50,772 INFO L225 Difference]: With dead ends: 392 [2023-12-02 16:55:50,773 INFO L226 Difference]: Without dead ends: 389 [2023-12-02 16:55:50,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 957 GetRequests, 924 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=416, Invalid=774, Unknown=0, NotChecked=0, Total=1190 [2023-12-02 16:55:50,774 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 12 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:55:50,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1669 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 16:55:50,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2023-12-02 16:55:50,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 386. [2023-12-02 16:55:50,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 372 states have (on average 1.1801075268817205) internal successors, (439), 374 states have internal predecessors, (439), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-12-02 16:55:50,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 460 transitions. [2023-12-02 16:55:50,792 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 460 transitions. Word has length 158 [2023-12-02 16:55:50,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:55:50,793 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 460 transitions. [2023-12-02 16:55:50,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 8.882352941176471) internal successors, (151), 20 states have internal predecessors, (151), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 16:55:50,793 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 460 transitions. [2023-12-02 16:55:50,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-02 16:55:50,796 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:55:50,796 INFO L195 NwaCegarLoop]: trace histogram [30, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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 16:55:50,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/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 (16)] Forceful destruction successful, exit code 0 [2023-12-02 16:55:51,020 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-02 16:55:51,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2023-12-02 16:55:51,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/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=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 16:55:51,398 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 16:55:51,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:55:51,398 INFO L85 PathProgramCache]: Analyzing trace with hash -518248322, now seen corresponding path program 3 times [2023-12-02 16:55:51,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:55:51,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [686288203] [2023-12-02 16:55:51,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 16:55:51,399 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 16:55:51,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:55:51,400 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/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 16:55:51,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/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 (19)] Waiting until timeout for monitored process [2023-12-02 16:55:54,302 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-02 16:55:54,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:55:54,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 16:55:54,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:55:54,461 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 172 proven. 15 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2023-12-02 16:55:54,462 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:55:54,860 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 172 proven. 15 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2023-12-02 16:55:54,861 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:55:54,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [686288203] [2023-12-02 16:55:54,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [686288203] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:55:54,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [492081587] [2023-12-02 16:55:54,861 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 16:55:54,861 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:55:54,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:55:54,862 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:55:54,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2023-12-02 16:56:22,887 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-02 16:56:22,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:56:22,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 16:56:22,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:56:22,982 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 172 proven. 15 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2023-12-02 16:56:22,982 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:56:23,113 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 172 proven. 15 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2023-12-02 16:56:23,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [492081587] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:56:23,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113879218] [2023-12-02 16:56:23,113 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 16:56:23,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:56:23,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:56:23,115 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:56:23,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7423119b-77a8-49c0-8451-9306fc832bec/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process