./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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_93f4ee8e-ae4f-4a72-8924-4d901e653860/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4318218de1a670b98e217596890d501e5109c78977de7e98dfa51804dcb18c15 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:56:58,440 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:56:58,534 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-12-02 15:56:58,539 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:56:58,540 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:56:58,565 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:56:58,566 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:56:58,567 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:56:58,567 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:56:58,568 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:56:58,569 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:56:58,569 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:56:58,570 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:56:58,570 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 15:56:58,571 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:56:58,571 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:56:58,572 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 15:56:58,572 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 15:56:58,573 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:56:58,573 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 15:56:58,574 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 15:56:58,575 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 15:56:58,576 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 15:56:58,577 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 15:56:58,577 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:56:58,578 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 15:56:58,578 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:56:58,579 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 15:56:58,579 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:56:58,579 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 15:56:58,580 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 15:56:58,580 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 15:56:58,580 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:56:58,581 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 15:56:58,581 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 15:56:58,581 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 15:56:58,581 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:56:58,582 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:56:58,582 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:56:58,582 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:56:58,582 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:56:58,583 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:56:58,583 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:56:58,583 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 15:56:58,583 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 15:56:58,583 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:56:58,584 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:56:58,584 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:56:58,584 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_93f4ee8e-ae4f-4a72-8924-4d901e653860/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4318218de1a670b98e217596890d501e5109c78977de7e98dfa51804dcb18c15 [2023-12-02 15:56:58,831 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:56:58,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:56:58,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:56:58,857 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:56:58,857 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:56:58,858 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i [2023-12-02 15:57:01,698 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:57:01,927 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:57:01,927 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i [2023-12-02 15:57:01,944 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/bin/utaipan-verify-nQ1chXbOIh/data/09db50831/19ad2c1639724fd0a46ec12581b78b4b/FLAG499609247 [2023-12-02 15:57:01,958 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/bin/utaipan-verify-nQ1chXbOIh/data/09db50831/19ad2c1639724fd0a46ec12581b78b4b [2023-12-02 15:57:01,960 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:57:01,962 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:57:01,963 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:57:01,963 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:57:01,967 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:57:01,968 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:57:01" (1/1) ... [2023-12-02 15:57:01,969 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9dcfe06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:57:01, skipping insertion in model container [2023-12-02 15:57:01,969 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:57:01" (1/1) ... [2023-12-02 15:57:02,021 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:57:02,355 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:57:02,372 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 15:57:02,373 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@77cc43d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:57:02, skipping insertion in model container [2023-12-02 15:57:02,373 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:57:02,373 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-12-02 15:57:02,375 INFO L158 Benchmark]: Toolchain (without parser) took 412.97ms. Allocated memory is still 155.2MB. Free memory was 116.8MB in the beginning and 101.7MB in the end (delta: 15.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-12-02 15:57:02,376 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 111.1MB. Free memory is still 84.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:57:02,376 INFO L158 Benchmark]: CACSL2BoogieTranslator took 410.57ms. Allocated memory is still 155.2MB. Free memory was 116.3MB in the beginning and 101.7MB in the end (delta: 14.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-12-02 15:57:02,377 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 111.1MB. Free memory is still 84.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 410.57ms. Allocated memory is still 155.2MB. Free memory was 116.3MB in the beginning and 101.7MB in the end (delta: 14.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: 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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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_93f4ee8e-ae4f-4a72-8924-4d901e653860/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4318218de1a670b98e217596890d501e5109c78977de7e98dfa51804dcb18c15 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:57:04,108 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:57:04,186 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-12-02 15:57:04,192 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:57:04,193 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:57:04,221 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:57:04,222 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:57:04,222 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:57:04,223 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:57:04,224 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:57:04,224 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:57:04,225 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:57:04,225 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:57:04,226 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:57:04,226 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:57:04,227 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:57:04,228 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 15:57:04,228 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 15:57:04,229 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:57:04,229 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 15:57:04,230 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:57:04,230 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 15:57:04,231 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:57:04,231 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 15:57:04,232 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 15:57:04,232 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 15:57:04,233 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:57:04,233 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 15:57:04,233 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 15:57:04,234 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 15:57:04,234 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 15:57:04,235 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 15:57:04,235 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:57:04,235 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:57:04,235 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 15:57:04,236 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:57:04,236 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:57:04,236 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:57:04,236 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:57:04,237 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:57:04,237 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 15:57:04,237 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 15:57:04,237 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:57:04,238 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:57:04,238 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:57:04,238 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_93f4ee8e-ae4f-4a72-8924-4d901e653860/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4318218de1a670b98e217596890d501e5109c78977de7e98dfa51804dcb18c15 [2023-12-02 15:57:04,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:57:04,548 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:57:04,550 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:57:04,551 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:57:04,551 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:57:04,553 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i [2023-12-02 15:57:07,226 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:57:07,483 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:57:07,484 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i [2023-12-02 15:57:07,501 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/bin/utaipan-verify-nQ1chXbOIh/data/534628f57/f17d9227b0d54e6ea56ffeff26e8e4be/FLAG83560f756 [2023-12-02 15:57:07,513 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/bin/utaipan-verify-nQ1chXbOIh/data/534628f57/f17d9227b0d54e6ea56ffeff26e8e4be [2023-12-02 15:57:07,516 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:57:07,517 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:57:07,519 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:57:07,519 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:57:07,523 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:57:07,524 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:57:07" (1/1) ... [2023-12-02 15:57:07,524 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@548c13e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:57:07, skipping insertion in model container [2023-12-02 15:57:07,525 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:57:07" (1/1) ... [2023-12-02 15:57:07,575 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:57:07,921 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:57:07,940 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-12-02 15:57:07,956 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:57:08,008 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:57:08,016 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:57:08,063 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:57:08,122 WARN L675 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:57:08,130 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:57:08,131 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:57:08 WrapperNode [2023-12-02 15:57:08,131 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:57:08,132 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:57:08,132 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:57:08,132 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:57:08,148 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:57:08" (1/1) ... [2023-12-02 15:57:08,181 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:57:08" (1/1) ... [2023-12-02 15:57:08,209 INFO L138 Inliner]: procedures = 174, calls = 117, calls flagged for inlining = 29, calls inlined = 14, statements flattened = 188 [2023-12-02 15:57:08,209 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:57:08,210 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:57:08,210 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:57:08,211 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:57:08,220 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:57:08" (1/1) ... [2023-12-02 15:57:08,220 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:57:08" (1/1) ... [2023-12-02 15:57:08,225 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:57:08" (1/1) ... [2023-12-02 15:57:08,225 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:57:08" (1/1) ... [2023-12-02 15:57:08,241 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:57:08" (1/1) ... [2023-12-02 15:57:08,244 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:57:08" (1/1) ... [2023-12-02 15:57:08,247 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:57:08" (1/1) ... [2023-12-02 15:57:08,250 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:57:08" (1/1) ... [2023-12-02 15:57:08,255 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:57:08,256 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:57:08,256 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:57:08,256 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:57:08,257 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:57:08" (1/1) ... [2023-12-02 15:57:08,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:57:08,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:57:08,287 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:57:08,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:57:08,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 15:57:08,332 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2023-12-02 15:57:08,332 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2023-12-02 15:57:08,332 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2023-12-02 15:57:08,332 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2023-12-02 15:57:08,333 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-12-02 15:57:08,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-12-02 15:57:08,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 15:57:08,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:57:08,333 INFO L130 BoogieDeclarations]: Found specification of procedure free_reports [2023-12-02 15:57:08,333 INFO L138 BoogieDeclarations]: Found implementation of procedure free_reports [2023-12-02 15:57:08,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 15:57:08,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 15:57:08,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 15:57:08,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 15:57:08,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 15:57:08,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 15:57:08,335 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2023-12-02 15:57:08,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2023-12-02 15:57:08,335 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-12-02 15:57:08,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-12-02 15:57:08,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:57:08,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:57:08,492 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:57:08,494 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:57:09,217 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:57:09,275 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:57:09,276 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 15:57:09,276 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:57:09 BoogieIcfgContainer [2023-12-02 15:57:09,276 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:57:09,278 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:57:09,278 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:57:09,281 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:57:09,281 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:57:07" (1/3) ... [2023-12-02 15:57:09,281 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@694beaee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:57:09, skipping insertion in model container [2023-12-02 15:57:09,282 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:57:08" (2/3) ... [2023-12-02 15:57:09,282 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@694beaee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:57:09, skipping insertion in model container [2023-12-02 15:57:09,282 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:57:09" (3/3) ... [2023-12-02 15:57:09,283 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test23_4.i [2023-12-02 15:57:09,297 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:57:09,298 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 76 error locations. [2023-12-02 15:57:09,337 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:57:09,343 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;@4e0ca43b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:57:09,343 INFO L358 AbstractCegarLoop]: Starting to check reachability of 76 error locations. [2023-12-02 15:57:09,346 INFO L276 IsEmpty]: Start isEmpty. Operand has 171 states, 80 states have (on average 2.125) internal successors, (170), 156 states have internal predecessors, (170), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 15:57:09,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 15:57:09,352 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:57:09,352 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:57:09,353 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-12-02 15:57:09,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:57:09,357 INFO L85 PathProgramCache]: Analyzing trace with hash -2103071063, now seen corresponding path program 1 times [2023-12-02 15:57:09,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:57:09,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [626151927] [2023-12-02 15:57:09,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:57:09,368 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 15:57:09,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:57:09,371 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:09,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:09,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:57:09,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 15:57:09,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:57:09,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 15:57:09,638 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 15:57:09,639 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:57:09,639 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:57:09,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [626151927] [2023-12-02 15:57:09,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [626151927] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:57:09,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:57:09,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 15:57:09,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910887570] [2023-12-02 15:57:09,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:57:09,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 15:57:09,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:57:09,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 15:57:09,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-02 15:57:09,678 INFO L87 Difference]: Start difference. First operand has 171 states, 80 states have (on average 2.125) internal successors, (170), 156 states have internal predecessors, (170), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:57:10,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:57:10,639 INFO L93 Difference]: Finished difference Result 186 states and 201 transitions. [2023-12-02 15:57:10,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 15:57:10,642 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-12-02 15:57:10,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:57:10,652 INFO L225 Difference]: With dead ends: 186 [2023-12-02 15:57:10,652 INFO L226 Difference]: Without dead ends: 185 [2023-12-02 15:57:10,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-02 15:57:10,658 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 14 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 15:57:10,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 631 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 15:57:10,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2023-12-02 15:57:10,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 178. [2023-12-02 15:57:10,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 86 states have (on average 2.0348837209302326) internal successors, (175), 161 states have internal predecessors, (175), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2023-12-02 15:57:10,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 194 transitions. [2023-12-02 15:57:10,708 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 194 transitions. Word has length 11 [2023-12-02 15:57:10,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:57:10,708 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 194 transitions. [2023-12-02 15:57:10,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:57:10,709 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 194 transitions. [2023-12-02 15:57:10,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 15:57:10,709 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:57:10,709 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:57:10,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:10,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:10,912 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-12-02 15:57:10,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:57:10,912 INFO L85 PathProgramCache]: Analyzing trace with hash -2103071062, now seen corresponding path program 1 times [2023-12-02 15:57:10,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:57:10,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1707939126] [2023-12-02 15:57:10,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:57:10,913 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 15:57:10,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:57:10,914 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:10,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:10,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:57:10,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 15:57:10,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:57:11,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 15:57:11,146 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 15:57:11,146 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:57:11,146 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:57:11,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1707939126] [2023-12-02 15:57:11,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1707939126] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:57:11,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:57:11,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 15:57:11,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204590605] [2023-12-02 15:57:11,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:57:11,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 15:57:11,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:57:11,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 15:57:11,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-02 15:57:11,150 INFO L87 Difference]: Start difference. First operand 178 states and 194 transitions. Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:57:12,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:57:12,085 INFO L93 Difference]: Finished difference Result 182 states and 196 transitions. [2023-12-02 15:57:12,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 15:57:12,086 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-12-02 15:57:12,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:57:12,088 INFO L225 Difference]: With dead ends: 182 [2023-12-02 15:57:12,088 INFO L226 Difference]: Without dead ends: 182 [2023-12-02 15:57:12,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-02 15:57:12,090 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 12 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 15:57:12,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 823 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 15:57:12,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-12-02 15:57:12,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 178. [2023-12-02 15:57:12,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 86 states have (on average 2.011627906976744) internal successors, (173), 161 states have internal predecessors, (173), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2023-12-02 15:57:12,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 192 transitions. [2023-12-02 15:57:12,105 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 192 transitions. Word has length 11 [2023-12-02 15:57:12,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:57:12,105 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 192 transitions. [2023-12-02 15:57:12,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:57:12,106 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 192 transitions. [2023-12-02 15:57:12,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 15:57:12,106 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:57:12,107 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:57:12,108 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-02 15:57:12,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:12,307 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-12-02 15:57:12,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:57:12,308 INFO L85 PathProgramCache]: Analyzing trace with hash -360260728, now seen corresponding path program 1 times [2023-12-02 15:57:12,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:57:12,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1888932579] [2023-12-02 15:57:12,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:57:12,309 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 15:57:12,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:57:12,310 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:12,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:12,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:57:12,370 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 15:57:12,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:57:12,424 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 15:57:12,424 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:57:12,424 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:57:12,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1888932579] [2023-12-02 15:57:12,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1888932579] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:57:12,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:57:12,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:57:12,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195587447] [2023-12-02 15:57:12,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:57:12,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:57:12,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:57:12,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:57:12,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:57:12,427 INFO L87 Difference]: Start difference. First operand 178 states and 192 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:57:12,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:57:12,776 INFO L93 Difference]: Finished difference Result 171 states and 184 transitions. [2023-12-02 15:57:12,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 15:57:12,777 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-12-02 15:57:12,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:57:12,778 INFO L225 Difference]: With dead ends: 171 [2023-12-02 15:57:12,778 INFO L226 Difference]: Without dead ends: 171 [2023-12-02 15:57:12,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:57:12,779 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 0 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:57:12,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 612 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 15:57:12,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-12-02 15:57:12,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 170. [2023-12-02 15:57:12,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 83 states have (on average 2.0) internal successors, (166), 154 states have internal predecessors, (166), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2023-12-02 15:57:12,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 183 transitions. [2023-12-02 15:57:12,791 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 183 transitions. Word has length 11 [2023-12-02 15:57:12,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:57:12,792 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 183 transitions. [2023-12-02 15:57:12,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:57:12,792 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 183 transitions. [2023-12-02 15:57:12,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 15:57:12,793 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:57:12,793 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:57:12,795 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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)] Ended with exit code 0 [2023-12-02 15:57:12,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:12,996 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-12-02 15:57:12,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:57:12,996 INFO L85 PathProgramCache]: Analyzing trace with hash -2103156663, now seen corresponding path program 1 times [2023-12-02 15:57:12,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:57:12,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1534566764] [2023-12-02 15:57:12,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:57:12,997 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 15:57:12,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:57:12,998 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:12,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:57:13,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:57:13,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:57:13,067 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 15:57:13,067 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:57:13,067 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:57:13,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1534566764] [2023-12-02 15:57:13,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1534566764] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:57:13,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:57:13,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:57:13,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579320873] [2023-12-02 15:57:13,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:57:13,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:57:13,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:57:13,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:57:13,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:57:13,070 INFO L87 Difference]: Start difference. First operand 170 states and 183 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:57:13,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:57:13,339 INFO L93 Difference]: Finished difference Result 171 states and 183 transitions. [2023-12-02 15:57:13,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 15:57:13,340 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-12-02 15:57:13,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:57:13,341 INFO L225 Difference]: With dead ends: 171 [2023-12-02 15:57:13,341 INFO L226 Difference]: Without dead ends: 171 [2023-12-02 15:57:13,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:57:13,343 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 89 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:57:13,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 517 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 15:57:13,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-12-02 15:57:13,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 170. [2023-12-02 15:57:13,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 83 states have (on average 1.9879518072289157) internal successors, (165), 154 states have internal predecessors, (165), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2023-12-02 15:57:13,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 182 transitions. [2023-12-02 15:57:13,354 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 182 transitions. Word has length 11 [2023-12-02 15:57:13,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:57:13,354 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 182 transitions. [2023-12-02 15:57:13,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:57:13,354 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 182 transitions. [2023-12-02 15:57:13,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 15:57:13,355 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:57:13,355 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:57:13,357 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:13,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:13,558 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-12-02 15:57:13,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:57:13,558 INFO L85 PathProgramCache]: Analyzing trace with hash -360346328, now seen corresponding path program 1 times [2023-12-02 15:57:13,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:57:13,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [110650862] [2023-12-02 15:57:13,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:57:13,559 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 15:57:13,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:57:13,560 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:13,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:13,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:57:13,615 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:57:13,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:57:13,640 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 15:57:13,640 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:57:13,640 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:57:13,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [110650862] [2023-12-02 15:57:13,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [110650862] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:57:13,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:57:13,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:57:13,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745512669] [2023-12-02 15:57:13,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:57:13,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:57:13,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:57:13,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:57:13,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:57:13,643 INFO L87 Difference]: Start difference. First operand 170 states and 182 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:57:13,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:57:13,925 INFO L93 Difference]: Finished difference Result 175 states and 186 transitions. [2023-12-02 15:57:13,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:57:13,926 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-12-02 15:57:13,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:57:13,927 INFO L225 Difference]: With dead ends: 175 [2023-12-02 15:57:13,927 INFO L226 Difference]: Without dead ends: 175 [2023-12-02 15:57:13,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 15:57:13,928 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 86 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:57:13,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 527 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 15:57:13,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-12-02 15:57:13,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 172. [2023-12-02 15:57:13,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 85 states have (on average 1.964705882352941) internal successors, (167), 156 states have internal predecessors, (167), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2023-12-02 15:57:13,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 184 transitions. [2023-12-02 15:57:13,936 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 184 transitions. Word has length 11 [2023-12-02 15:57:13,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:57:13,937 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 184 transitions. [2023-12-02 15:57:13,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:57:13,937 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 184 transitions. [2023-12-02 15:57:13,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 15:57:13,938 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:57:13,938 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:57:13,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:14,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:14,140 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_LEAK === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-12-02 15:57:14,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:57:14,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1714185826, now seen corresponding path program 1 times [2023-12-02 15:57:14,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:57:14,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1935326604] [2023-12-02 15:57:14,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:57:14,140 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 15:57:14,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:57:14,141 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:14,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:14,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:57:14,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:57:14,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:57:14,208 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 15:57:14,208 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:57:14,208 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:57:14,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1935326604] [2023-12-02 15:57:14,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1935326604] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:57:14,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:57:14,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:57:14,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177234264] [2023-12-02 15:57:14,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:57:14,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:57:14,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:57:14,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:57:14,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:57:14,210 INFO L87 Difference]: Start difference. First operand 172 states and 184 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:57:14,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:57:14,597 INFO L93 Difference]: Finished difference Result 184 states and 198 transitions. [2023-12-02 15:57:14,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:57:14,597 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-12-02 15:57:14,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:57:14,599 INFO L225 Difference]: With dead ends: 184 [2023-12-02 15:57:14,599 INFO L226 Difference]: Without dead ends: 176 [2023-12-02 15:57:14,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:57:14,600 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 44 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 15:57:14,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 288 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 15:57:14,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-12-02 15:57:14,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 166. [2023-12-02 15:57:14,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 80 states have (on average 2.0125) internal successors, (161), 151 states have internal predecessors, (161), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 15:57:14,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 177 transitions. [2023-12-02 15:57:14,605 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 177 transitions. Word has length 12 [2023-12-02 15:57:14,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:57:14,605 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 177 transitions. [2023-12-02 15:57:14,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:57:14,605 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 177 transitions. [2023-12-02 15:57:14,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-02 15:57:14,606 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:57:14,606 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:57:14,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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)] Forceful destruction successful, exit code 0 [2023-12-02 15:57:14,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:14,806 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-12-02 15:57:14,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:57:14,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1901834553, now seen corresponding path program 1 times [2023-12-02 15:57:14,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:57:14,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1273748221] [2023-12-02 15:57:14,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:57:14,807 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 15:57:14,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:57:14,808 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:14,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:14,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:57:14,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 15:57:14,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:57:14,947 WARN L876 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|))) is different from true [2023-12-02 15:57:14,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 15:57:14,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-12-02 15:57:15,047 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 15:57:15,047 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:57:15,047 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:57:15,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1273748221] [2023-12-02 15:57:15,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1273748221] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:57:15,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:57:15,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:57:15,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934376970] [2023-12-02 15:57:15,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:57:15,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 15:57:15,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:57:15,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 15:57:15,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=19, Unknown=1, NotChecked=8, Total=42 [2023-12-02 15:57:15,050 INFO L87 Difference]: Start difference. First operand 166 states and 177 transitions. Second operand has 7 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:57:15,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:57:15,677 INFO L93 Difference]: Finished difference Result 176 states and 190 transitions. [2023-12-02 15:57:15,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 15:57:15,677 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2023-12-02 15:57:15,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:57:15,679 INFO L225 Difference]: With dead ends: 176 [2023-12-02 15:57:15,679 INFO L226 Difference]: Without dead ends: 176 [2023-12-02 15:57:15,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=27, Unknown=1, NotChecked=10, Total=56 [2023-12-02 15:57:15,680 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 47 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 195 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 15:57:15,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 234 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 249 Invalid, 0 Unknown, 195 Unchecked, 0.6s Time] [2023-12-02 15:57:15,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-12-02 15:57:15,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 165. [2023-12-02 15:57:15,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 80 states have (on average 2.0) internal successors, (160), 150 states have internal predecessors, (160), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 15:57:15,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 176 transitions. [2023-12-02 15:57:15,688 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 176 transitions. Word has length 14 [2023-12-02 15:57:15,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:57:15,689 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 176 transitions. [2023-12-02 15:57:15,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:57:15,689 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 176 transitions. [2023-12-02 15:57:15,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-02 15:57:15,690 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:57:15,690 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:57:15,692 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:15,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:15,893 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-12-02 15:57:15,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:57:15,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1901834554, now seen corresponding path program 1 times [2023-12-02 15:57:15,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:57:15,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [345114528] [2023-12-02 15:57:15,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:57:15,894 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 15:57:15,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:57:15,895 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:15,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:15,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:57:15,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 15:57:15,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:57:16,080 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-12-02 15:57:16,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-12-02 15:57:16,122 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 15:57:16,122 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:57:16,122 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:57:16,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [345114528] [2023-12-02 15:57:16,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [345114528] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:57:16,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:57:16,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:57:16,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674476536] [2023-12-02 15:57:16,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:57:16,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 15:57:16,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:57:16,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 15:57:16,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:57:16,124 INFO L87 Difference]: Start difference. First operand 165 states and 176 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 15:57:17,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:57:17,084 INFO L93 Difference]: Finished difference Result 212 states and 226 transitions. [2023-12-02 15:57:17,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 15:57:17,085 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2023-12-02 15:57:17,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:57:17,087 INFO L225 Difference]: With dead ends: 212 [2023-12-02 15:57:17,087 INFO L226 Difference]: Without dead ends: 212 [2023-12-02 15:57:17,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-02 15:57:17,088 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 160 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 15:57:17,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 338 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 15:57:17,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-12-02 15:57:17,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 173. [2023-12-02 15:57:17,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 87 states have (on average 1.9770114942528736) internal successors, (172), 157 states have internal predecessors, (172), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2023-12-02 15:57:17,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 190 transitions. [2023-12-02 15:57:17,094 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 190 transitions. Word has length 14 [2023-12-02 15:57:17,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:57:17,095 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 190 transitions. [2023-12-02 15:57:17,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 15:57:17,095 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 190 transitions. [2023-12-02 15:57:17,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 15:57:17,095 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:57:17,096 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] [2023-12-02 15:57:17,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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)] Forceful destruction successful, exit code 0 [2023-12-02 15:57:17,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:17,296 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-12-02 15:57:17,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:57:17,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1730159970, now seen corresponding path program 1 times [2023-12-02 15:57:17,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:57:17,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [406348980] [2023-12-02 15:57:17,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:57:17,297 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 15:57:17,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:57:17,298 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:17,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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)] Waiting until timeout for monitored process [2023-12-02 15:57:17,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:57:17,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 15:57:17,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:57:17,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 15:57:17,419 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 15:57:17,420 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:57:17,420 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:57:17,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [406348980] [2023-12-02 15:57:17,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [406348980] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:57:17,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:57:17,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:57:17,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996083749] [2023-12-02 15:57:17,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:57:17,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:57:17,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:57:17,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:57:17,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:57:17,422 INFO L87 Difference]: Start difference. First operand 173 states and 190 transitions. Second operand has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 15:57:17,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:57:17,925 INFO L93 Difference]: Finished difference Result 215 states and 239 transitions. [2023-12-02 15:57:17,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 15:57:17,926 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 20 [2023-12-02 15:57:17,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:57:17,927 INFO L225 Difference]: With dead ends: 215 [2023-12-02 15:57:17,927 INFO L226 Difference]: Without dead ends: 215 [2023-12-02 15:57:17,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:57:17,928 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 52 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 15:57:17,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 389 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 15:57:17,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2023-12-02 15:57:17,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 190. [2023-12-02 15:57:17,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 106 states have (on average 2.009433962264151) internal successors, (213), 174 states have internal predecessors, (213), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2023-12-02 15:57:17,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 231 transitions. [2023-12-02 15:57:17,934 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 231 transitions. Word has length 20 [2023-12-02 15:57:17,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:57:17,934 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 231 transitions. [2023-12-02 15:57:17,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 15:57:17,934 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 231 transitions. [2023-12-02 15:57:17,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 15:57:17,935 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:57:17,935 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] [2023-12-02 15:57:17,937 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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)] Ended with exit code 0 [2023-12-02 15:57:18,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:18,136 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-12-02 15:57:18,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:57:18,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1730159971, now seen corresponding path program 1 times [2023-12-02 15:57:18,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:57:18,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [293363236] [2023-12-02 15:57:18,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:57:18,137 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 15:57:18,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:57:18,138 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:18,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:18,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:57:18,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 15:57:18,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:57:18,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 15:57:18,277 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 15:57:18,278 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:57:18,278 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:57:18,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [293363236] [2023-12-02 15:57:18,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [293363236] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:57:18,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:57:18,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:57:18,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404775639] [2023-12-02 15:57:18,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:57:18,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:57:18,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:57:18,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:57:18,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:57:18,280 INFO L87 Difference]: Start difference. First operand 190 states and 231 transitions. Second operand has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 15:57:18,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:57:18,969 INFO L93 Difference]: Finished difference Result 219 states and 243 transitions. [2023-12-02 15:57:18,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 15:57:18,969 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 20 [2023-12-02 15:57:18,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:57:18,971 INFO L225 Difference]: With dead ends: 219 [2023-12-02 15:57:18,971 INFO L226 Difference]: Without dead ends: 219 [2023-12-02 15:57:18,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:57:18,972 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 57 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 15:57:18,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 384 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 15:57:18,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-12-02 15:57:18,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 192. [2023-12-02 15:57:18,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 109 states have (on average 1.9724770642201834) internal successors, (215), 175 states have internal predecessors, (215), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-12-02 15:57:18,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 236 transitions. [2023-12-02 15:57:18,980 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 236 transitions. Word has length 20 [2023-12-02 15:57:18,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:57:18,980 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 236 transitions. [2023-12-02 15:57:18,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 15:57:18,981 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 236 transitions. [2023-12-02 15:57:18,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-02 15:57:18,981 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:57:18,981 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] [2023-12-02 15:57:18,984 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:19,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:19,182 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-12-02 15:57:19,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:57:19,186 INFO L85 PathProgramCache]: Analyzing trace with hash 531449695, now seen corresponding path program 1 times [2023-12-02 15:57:19,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:57:19,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [645559891] [2023-12-02 15:57:19,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:57:19,187 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 15:57:19,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:57:19,188 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:19,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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)] Waiting until timeout for monitored process [2023-12-02 15:57:19,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:57:19,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 15:57:19,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:57:19,297 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 15:57:19,297 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:57:19,297 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:57:19,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [645559891] [2023-12-02 15:57:19,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [645559891] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:57:19,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:57:19,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:57:19,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315556715] [2023-12-02 15:57:19,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:57:19,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:57:19,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:57:19,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:57:19,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:57:19,299 INFO L87 Difference]: Start difference. First operand 192 states and 236 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 15:57:19,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:57:19,553 INFO L93 Difference]: Finished difference Result 192 states and 235 transitions. [2023-12-02 15:57:19,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 15:57:19,553 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2023-12-02 15:57:19,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:57:19,555 INFO L225 Difference]: With dead ends: 192 [2023-12-02 15:57:19,555 INFO L226 Difference]: Without dead ends: 192 [2023-12-02 15:57:19,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:57:19,556 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 70 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:57:19,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 486 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:57:19,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2023-12-02 15:57:19,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2023-12-02 15:57:19,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 109 states have (on average 1.963302752293578) internal successors, (214), 175 states have internal predecessors, (214), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-12-02 15:57:19,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 235 transitions. [2023-12-02 15:57:19,564 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 235 transitions. Word has length 22 [2023-12-02 15:57:19,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:57:19,564 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 235 transitions. [2023-12-02 15:57:19,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 15:57:19,564 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 235 transitions. [2023-12-02 15:57:19,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-02 15:57:19,565 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:57:19,565 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, 1] [2023-12-02 15:57:19,568 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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)] Ended with exit code 0 [2023-12-02 15:57:19,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:19,767 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-12-02 15:57:19,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:57:19,768 INFO L85 PathProgramCache]: Analyzing trace with hash -803474699, now seen corresponding path program 1 times [2023-12-02 15:57:19,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:57:19,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1505997052] [2023-12-02 15:57:19,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:57:19,769 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 15:57:19,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:57:19,770 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:19,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:19,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:57:19,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 15:57:19,942 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:57:19,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 15:57:19,987 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-12-02 15:57:19,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-12-02 15:57:20,038 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 15:57:20,038 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:57:20,038 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:57:20,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1505997052] [2023-12-02 15:57:20,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1505997052] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:57:20,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:57:20,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 15:57:20,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310168301] [2023-12-02 15:57:20,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:57:20,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 15:57:20,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:57:20,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 15:57:20,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-02 15:57:20,040 INFO L87 Difference]: Start difference. First operand 192 states and 235 transitions. Second operand has 7 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 15:57:20,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:57:20,747 INFO L93 Difference]: Finished difference Result 204 states and 244 transitions. [2023-12-02 15:57:20,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 15:57:20,748 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2023-12-02 15:57:20,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:57:20,749 INFO L225 Difference]: With dead ends: 204 [2023-12-02 15:57:20,750 INFO L226 Difference]: Without dead ends: 204 [2023-12-02 15:57:20,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-02 15:57:20,750 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 113 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 15:57:20,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 388 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 15:57:20,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-12-02 15:57:20,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 188. [2023-12-02 15:57:20,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 109 states have (on average 1.889908256880734) internal successors, (206), 171 states have internal predecessors, (206), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-12-02 15:57:20,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 227 transitions. [2023-12-02 15:57:20,758 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 227 transitions. Word has length 26 [2023-12-02 15:57:20,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:57:20,758 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 227 transitions. [2023-12-02 15:57:20,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 15:57:20,759 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 227 transitions. [2023-12-02 15:57:20,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-02 15:57:20,759 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:57:20,759 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, 1] [2023-12-02 15:57:20,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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)] Ended with exit code 0 [2023-12-02 15:57:20,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:20,960 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-12-02 15:57:20,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:57:20,960 INFO L85 PathProgramCache]: Analyzing trace with hash -803474698, now seen corresponding path program 1 times [2023-12-02 15:57:20,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:57:20,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1546181247] [2023-12-02 15:57:20,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:57:20,961 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 15:57:20,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:57:20,962 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:20,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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)] Waiting until timeout for monitored process [2023-12-02 15:57:21,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:57:21,105 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-02 15:57:21,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:57:21,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 15:57:21,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 15:57:21,160 WARN L876 $PredicateComparison]: unable to prove that (exists ((|ldv_zalloc_#t~malloc13#1.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| |ldv_zalloc_#t~malloc13#1.base|) (_ bv0 1)) (= |c_#length| (store |c_old(#length)| |ldv_zalloc_#t~malloc13#1.base| (select |c_#length| |ldv_zalloc_#t~malloc13#1.base|))))) is different from true [2023-12-02 15:57:21,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 15:57:21,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-12-02 15:57:21,191 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 15:57:21,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 15:57:21,260 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 15:57:21,260 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:57:21,260 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:57:21,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1546181247] [2023-12-02 15:57:21,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1546181247] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:57:21,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:57:21,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 15:57:21,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743670988] [2023-12-02 15:57:21,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:57:21,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 15:57:21,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:57:21,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 15:57:21,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=21, Unknown=1, NotChecked=8, Total=42 [2023-12-02 15:57:21,262 INFO L87 Difference]: Start difference. First operand 188 states and 227 transitions. Second operand has 7 states, 4 states have (on average 5.0) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 15:57:22,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:57:22,108 INFO L93 Difference]: Finished difference Result 213 states and 237 transitions. [2023-12-02 15:57:22,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 15:57:22,108 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 4 states have (on average 5.0) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2023-12-02 15:57:22,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:57:22,110 INFO L225 Difference]: With dead ends: 213 [2023-12-02 15:57:22,110 INFO L226 Difference]: Without dead ends: 213 [2023-12-02 15:57:22,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=29, Unknown=1, NotChecked=10, Total=56 [2023-12-02 15:57:22,111 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 92 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 239 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 15:57:22,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 278 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 375 Invalid, 0 Unknown, 239 Unchecked, 0.8s Time] [2023-12-02 15:57:22,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-12-02 15:57:22,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 188. [2023-12-02 15:57:22,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 109 states have (on average 1.853211009174312) internal successors, (202), 171 states have internal predecessors, (202), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-12-02 15:57:22,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 223 transitions. [2023-12-02 15:57:22,119 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 223 transitions. Word has length 26 [2023-12-02 15:57:22,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:57:22,119 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 223 transitions. [2023-12-02 15:57:22,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 4 states have (on average 5.0) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 15:57:22,119 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 223 transitions. [2023-12-02 15:57:22,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-02 15:57:22,120 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:57:22,120 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, 1, 1, 1] [2023-12-02 15:57:22,124 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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)] Ended with exit code 0 [2023-12-02 15:57:22,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:22,321 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-12-02 15:57:22,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:57:22,321 INFO L85 PathProgramCache]: Analyzing trace with hash 954888201, now seen corresponding path program 1 times [2023-12-02 15:57:22,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:57:22,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [852569537] [2023-12-02 15:57:22,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:57:22,322 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 15:57:22,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:57:22,323 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:22,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 (15)] Waiting until timeout for monitored process [2023-12-02 15:57:22,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:57:22,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:57:22,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:57:22,458 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 15:57:22,458 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:57:22,458 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:57:22,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [852569537] [2023-12-02 15:57:22,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [852569537] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:57:22,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:57:22,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:57:22,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059752808] [2023-12-02 15:57:22,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:57:22,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:57:22,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:57:22,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:57:22,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:57:22,460 INFO L87 Difference]: Start difference. First operand 188 states and 223 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 15:57:22,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:57:22,676 INFO L93 Difference]: Finished difference Result 228 states and 267 transitions. [2023-12-02 15:57:22,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:57:22,677 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2023-12-02 15:57:22,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:57:22,678 INFO L225 Difference]: With dead ends: 228 [2023-12-02 15:57:22,679 INFO L226 Difference]: Without dead ends: 228 [2023-12-02 15:57:22,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 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 15:57:22,680 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 35 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:57:22,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 417 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:57:22,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2023-12-02 15:57:22,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 192. [2023-12-02 15:57:22,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 113 states have (on average 1.823008849557522) internal successors, (206), 175 states have internal predecessors, (206), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-12-02 15:57:22,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 227 transitions. [2023-12-02 15:57:22,688 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 227 transitions. Word has length 28 [2023-12-02 15:57:22,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:57:22,688 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 227 transitions. [2023-12-02 15:57:22,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 15:57:22,689 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 227 transitions. [2023-12-02 15:57:22,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-02 15:57:22,690 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:57:22,690 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, 1, 1, 1, 1] [2023-12-02 15:57:22,694 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 (15)] Ended with exit code 0 [2023-12-02 15:57:22,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:22,893 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-12-02 15:57:22,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:57:22,894 INFO L85 PathProgramCache]: Analyzing trace with hash -463236912, now seen corresponding path program 1 times [2023-12-02 15:57:22,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:57:22,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [405937281] [2023-12-02 15:57:22,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:57:22,894 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 15:57:22,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:57:22,895 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:22,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:57:22,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 15:57:22,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:57:23,323 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 15:57:23,323 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:57:23,323 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:57:23,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [405937281] [2023-12-02 15:57:23,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [405937281] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:57:23,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:57:23,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:57:23,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630474021] [2023-12-02 15:57:23,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:57:23,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 15:57:23,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:57:23,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 15:57:23,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-02 15:57:23,326 INFO L87 Difference]: Start difference. First operand 192 states and 227 transitions. Second operand has 7 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 15:57:24,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:57:24,049 INFO L93 Difference]: Finished difference Result 190 states and 224 transitions. [2023-12-02 15:57:24,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 15:57:24,050 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2023-12-02 15:57:24,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:57:24,051 INFO L225 Difference]: With dead ends: 190 [2023-12-02 15:57:24,052 INFO L226 Difference]: Without dead ends: 190 [2023-12-02 15:57:24,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-02 15:57:24,053 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 186 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 15:57:24,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 397 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 15:57:24,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-12-02 15:57:24,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2023-12-02 15:57:24,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 113 states have (on average 1.7964601769911503) internal successors, (203), 173 states have internal predecessors, (203), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-12-02 15:57:24,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 224 transitions. [2023-12-02 15:57:24,059 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 224 transitions. Word has length 29 [2023-12-02 15:57:24,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:57:24,060 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 224 transitions. [2023-12-02 15:57:24,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 15:57:24,060 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 224 transitions. [2023-12-02 15:57:24,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-02 15:57:24,061 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:57:24,061 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, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:57:24,064 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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)] Ended with exit code 0 [2023-12-02 15:57:24,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:24,261 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-12-02 15:57:24,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:57:24,262 INFO L85 PathProgramCache]: Analyzing trace with hash 476538657, now seen corresponding path program 1 times [2023-12-02 15:57:24,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:57:24,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [126257230] [2023-12-02 15:57:24,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:57:24,262 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 15:57:24,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:57:24,263 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:24,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 (17)] Waiting until timeout for monitored process [2023-12-02 15:57:24,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:57:24,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 15:57:24,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:57:24,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 15:57:24,478 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 15:57:24,478 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:57:24,479 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:57:24,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [126257230] [2023-12-02 15:57:24,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [126257230] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:57:24,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:57:24,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:57:24,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080668776] [2023-12-02 15:57:24,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:57:24,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 15:57:24,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:57:24,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 15:57:24,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:57:24,480 INFO L87 Difference]: Start difference. First operand 190 states and 224 transitions. Second operand has 6 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 15:57:25,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:57:25,124 INFO L93 Difference]: Finished difference Result 201 states and 224 transitions. [2023-12-02 15:57:25,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 15:57:25,125 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 32 [2023-12-02 15:57:25,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:57:25,126 INFO L225 Difference]: With dead ends: 201 [2023-12-02 15:57:25,126 INFO L226 Difference]: Without dead ends: 201 [2023-12-02 15:57:25,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-02 15:57:25,127 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 55 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 15:57:25,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 462 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 15:57:25,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2023-12-02 15:57:25,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 189. [2023-12-02 15:57:25,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 113 states have (on average 1.7699115044247788) internal successors, (200), 172 states have internal predecessors, (200), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-12-02 15:57:25,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 221 transitions. [2023-12-02 15:57:25,133 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 221 transitions. Word has length 32 [2023-12-02 15:57:25,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:57:25,133 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 221 transitions. [2023-12-02 15:57:25,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 15:57:25,134 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 221 transitions. [2023-12-02 15:57:25,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-02 15:57:25,134 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:57:25,134 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, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:57:25,139 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 (17)] Ended with exit code 0 [2023-12-02 15:57:25,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:25,335 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-12-02 15:57:25,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:57:25,335 INFO L85 PathProgramCache]: Analyzing trace with hash 476538658, now seen corresponding path program 1 times [2023-12-02 15:57:25,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:57:25,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1221601245] [2023-12-02 15:57:25,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:57:25,336 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 15:57:25,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:57:25,337 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:25,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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)] Waiting until timeout for monitored process [2023-12-02 15:57:25,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:57:25,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-02 15:57:25,533 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:57:25,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 15:57:25,647 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 15:57:25,647 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:57:25,647 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:57:25,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1221601245] [2023-12-02 15:57:25,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1221601245] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:57:25,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:57:25,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:57:25,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105992325] [2023-12-02 15:57:25,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:57:25,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 15:57:25,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:57:25,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 15:57:25,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:57:25,650 INFO L87 Difference]: Start difference. First operand 189 states and 221 transitions. Second operand has 6 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 15:57:26,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:57:26,510 INFO L93 Difference]: Finished difference Result 202 states and 225 transitions. [2023-12-02 15:57:26,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:57:26,510 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 32 [2023-12-02 15:57:26,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:57:26,512 INFO L225 Difference]: With dead ends: 202 [2023-12-02 15:57:26,512 INFO L226 Difference]: Without dead ends: 202 [2023-12-02 15:57:26,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-02 15:57:26,512 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 44 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 15:57:26,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 455 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 15:57:26,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2023-12-02 15:57:26,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 189. [2023-12-02 15:57:26,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 113 states have (on average 1.752212389380531) internal successors, (198), 172 states have internal predecessors, (198), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-12-02 15:57:26,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 219 transitions. [2023-12-02 15:57:26,517 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 219 transitions. Word has length 32 [2023-12-02 15:57:26,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:57:26,518 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 219 transitions. [2023-12-02 15:57:26,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 15:57:26,518 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 219 transitions. [2023-12-02 15:57:26,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-02 15:57:26,518 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:57:26,518 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:57:26,522 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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)] Ended with exit code 0 [2023-12-02 15:57:26,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:26,719 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-12-02 15:57:26,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:57:26,720 INFO L85 PathProgramCache]: Analyzing trace with hash -201321533, now seen corresponding path program 1 times [2023-12-02 15:57:26,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:57:26,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2070816300] [2023-12-02 15:57:26,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:57:26,720 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 15:57:26,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:57:26,722 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:26,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:26,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:57:26,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:57:26,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:57:26,856 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 15:57:26,856 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:57:26,856 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:57:26,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2070816300] [2023-12-02 15:57:26,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2070816300] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:57:26,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:57:26,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:57:26,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747171157] [2023-12-02 15:57:26,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:57:26,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:57:26,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:57:26,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:57:26,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:57:26,858 INFO L87 Difference]: Start difference. First operand 189 states and 219 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 15:57:27,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:57:27,092 INFO L93 Difference]: Finished difference Result 210 states and 242 transitions. [2023-12-02 15:57:27,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:57:27,093 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 33 [2023-12-02 15:57:27,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:57:27,094 INFO L225 Difference]: With dead ends: 210 [2023-12-02 15:57:27,094 INFO L226 Difference]: Without dead ends: 210 [2023-12-02 15:57:27,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 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 15:57:27,095 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 21 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:57:27,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 407 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:57:27,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-12-02 15:57:27,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 191. [2023-12-02 15:57:27,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 115 states have (on average 1.7391304347826086) internal successors, (200), 174 states have internal predecessors, (200), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-12-02 15:57:27,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 221 transitions. [2023-12-02 15:57:27,100 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 221 transitions. Word has length 33 [2023-12-02 15:57:27,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:57:27,100 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 221 transitions. [2023-12-02 15:57:27,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 15:57:27,100 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 221 transitions. [2023-12-02 15:57:27,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-02 15:57:27,101 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:57:27,101 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:57:27,103 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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)] Ended with exit code 0 [2023-12-02 15:57:27,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:27,301 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-12-02 15:57:27,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:57:27,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1607842640, now seen corresponding path program 1 times [2023-12-02 15:57:27,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:57:27,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1966530952] [2023-12-02 15:57:27,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:57:27,302 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 15:57:27,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:57:27,303 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:27,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 (20)] Waiting until timeout for monitored process [2023-12-02 15:57:27,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:57:27,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-02 15:57:27,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:57:27,811 INFO L349 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size [2023-12-02 15:57:27,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 46 [2023-12-02 15:57:28,223 INFO L349 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2023-12-02 15:57:28,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 42 [2023-12-02 15:57:28,466 INFO L349 Elim1Store]: treesize reduction 118, result has 27.6 percent of original size [2023-12-02 15:57:28,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 38 treesize of output 73 [2023-12-02 15:57:28,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 15:57:29,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 11 [2023-12-02 15:57:29,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 15:57:29,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 15:57:29,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 15:57:29,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 15:57:30,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-12-02 15:57:30,953 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 15:57:30,953 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:57:30,953 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:57:30,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1966530952] [2023-12-02 15:57:30,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1966530952] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:57:30,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:57:30,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-02 15:57:30,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455486458] [2023-12-02 15:57:30,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:57:30,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-02 15:57:30,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:57:30,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-02 15:57:30,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2023-12-02 15:57:30,956 INFO L87 Difference]: Start difference. First operand 191 states and 221 transitions. Second operand has 18 states, 14 states have (on average 2.0) internal successors, (28), 15 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 15:57:39,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:57:44,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:57:46,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:57:47,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:57:47,195 INFO L93 Difference]: Finished difference Result 307 states and 348 transitions. [2023-12-02 15:57:47,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-02 15:57:47,196 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 14 states have (on average 2.0) internal successors, (28), 15 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 34 [2023-12-02 15:57:47,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:57:47,198 INFO L225 Difference]: With dead ends: 307 [2023-12-02 15:57:47,198 INFO L226 Difference]: Without dead ends: 307 [2023-12-02 15:57:47,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=151, Invalid=661, Unknown=0, NotChecked=0, Total=812 [2023-12-02 15:57:47,199 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 697 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 1337 mSolverCounterSat, 77 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 1418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1337 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2023-12-02 15:57:47,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 629 Invalid, 1418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1337 Invalid, 4 Unknown, 0 Unchecked, 12.9s Time] [2023-12-02 15:57:47,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2023-12-02 15:57:47,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 212. [2023-12-02 15:57:47,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 137 states have (on average 1.7153284671532847) internal successors, (235), 192 states have internal predecessors, (235), 10 states have call successors, (10), 7 states have call predecessors, (10), 8 states have return successors, (13), 12 states have call predecessors, (13), 10 states have call successors, (13) [2023-12-02 15:57:47,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 258 transitions. [2023-12-02 15:57:47,208 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 258 transitions. Word has length 34 [2023-12-02 15:57:47,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:57:47,208 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 258 transitions. [2023-12-02 15:57:47,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 14 states have (on average 2.0) internal successors, (28), 15 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 15:57:47,208 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 258 transitions. [2023-12-02 15:57:47,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-02 15:57:47,209 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:57:47,209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:57:47,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 (20)] Forceful destruction successful, exit code 0 [2023-12-02 15:57:47,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:47,411 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-12-02 15:57:47,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:57:47,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1607842639, now seen corresponding path program 1 times [2023-12-02 15:57:47,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:57:47,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2097648644] [2023-12-02 15:57:47,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:57:47,412 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 15:57:47,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:57:47,413 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:57:47,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 (21)] Waiting until timeout for monitored process [2023-12-02 15:57:47,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:57:47,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 69 conjunts are in the unsatisfiable core [2023-12-02 15:57:47,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:57:47,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 15:57:47,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-12-02 15:57:47,907 INFO L349 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2023-12-02 15:57:47,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-12-02 15:57:48,160 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-12-02 15:57:48,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2023-12-02 15:57:48,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 15:57:48,355 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 15:57:48,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 15:57:48,400 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-12-02 15:57:48,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-12-02 15:57:48,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 15:57:48,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 15:57:48,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 11 [2023-12-02 15:57:48,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 11 [2023-12-02 15:57:49,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 15:57:49,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 15:57:49,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 15:57:49,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 15:57:49,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 15:57:49,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 15:57:49,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 15:57:49,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 15:57:49,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-12-02 15:57:49,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-12-02 15:57:50,079 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 15:57:50,079 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:57:50,079 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:57:50,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2097648644] [2023-12-02 15:57:50,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2097648644] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:57:50,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:57:50,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-12-02 15:57:50,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201242009] [2023-12-02 15:57:50,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:57:50,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-02 15:57:50,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:57:50,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-02 15:57:50,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2023-12-02 15:57:50,081 INFO L87 Difference]: Start difference. First operand 212 states and 258 transitions. Second operand has 17 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 15 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 15:57:58,216 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:58:01,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:58:03,734 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 [0] [2023-12-02 15:58:04,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:58:04,574 INFO L93 Difference]: Finished difference Result 244 states and 281 transitions. [2023-12-02 15:58:04,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-02 15:58:04,575 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 15 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 34 [2023-12-02 15:58:04,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:58:04,577 INFO L225 Difference]: With dead ends: 244 [2023-12-02 15:58:04,577 INFO L226 Difference]: Without dead ends: 244 [2023-12-02 15:58:04,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=130, Invalid=682, Unknown=0, NotChecked=0, Total=812 [2023-12-02 15:58:04,578 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 577 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 1507 mSolverCounterSat, 59 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 1569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1507 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:58:04,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [579 Valid, 536 Invalid, 1569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1507 Invalid, 3 Unknown, 0 Unchecked, 12.0s Time] [2023-12-02 15:58:04,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2023-12-02 15:58:04,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 211. [2023-12-02 15:58:04,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 137 states have (on average 1.686131386861314) internal successors, (231), 191 states have internal predecessors, (231), 10 states have call successors, (10), 7 states have call predecessors, (10), 8 states have return successors, (13), 12 states have call predecessors, (13), 10 states have call successors, (13) [2023-12-02 15:58:04,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 254 transitions. [2023-12-02 15:58:04,585 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 254 transitions. Word has length 34 [2023-12-02 15:58:04,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:58:04,585 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 254 transitions. [2023-12-02 15:58:04,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 15 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 15:58:04,585 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 254 transitions. [2023-12-02 15:58:04,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-02 15:58:04,586 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:58:04,586 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:58:04,591 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 (21)] Ended with exit code 0 [2023-12-02 15:58:04,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:58:04,787 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-12-02 15:58:04,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:58:04,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1696490124, now seen corresponding path program 1 times [2023-12-02 15:58:04,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:58:04,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1633836736] [2023-12-02 15:58:04,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:58:04,788 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 15:58:04,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:58:04,789 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:58:04,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 (22)] Waiting until timeout for monitored process [2023-12-02 15:58:05,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:58:05,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 76 conjunts are in the unsatisfiable core [2023-12-02 15:58:05,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:58:05,284 INFO L349 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-12-02 15:58:05,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 31 treesize of output 53 [2023-12-02 15:58:05,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 15:58:05,827 INFO L349 Elim1Store]: treesize reduction 92, result has 31.3 percent of original size [2023-12-02 15:58:05,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 42 treesize of output 77 [2023-12-02 15:58:06,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 15:58:06,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 15:58:06,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 15:58:06,028 INFO L349 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2023-12-02 15:58:06,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 32 [2023-12-02 15:58:06,333 INFO L349 Elim1Store]: treesize reduction 166, result has 27.8 percent of original size [2023-12-02 15:58:06,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 49 treesize of output 97 [2023-12-02 15:58:07,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 40 [2023-12-02 15:58:07,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 15:58:07,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 12 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 11 [2023-12-02 15:58:07,673 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-02 15:58:07,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 43 [2023-12-02 15:58:08,266 INFO L349 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2023-12-02 15:58:08,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 53 [2023-12-02 15:58:08,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 15:58:08,427 INFO L349 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2023-12-02 15:58:08,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 53 [2023-12-02 15:58:08,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 15:58:08,571 INFO L349 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2023-12-02 15:58:08,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 53 [2023-12-02 15:58:08,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 15:58:08,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 15:58:08,772 INFO L349 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2023-12-02 15:58:08,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 53 [2023-12-02 15:58:09,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-12-02 15:58:10,649 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:58:10,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 136 treesize of output 108 [2023-12-02 15:58:11,505 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 15:58:11,505 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:58:11,505 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:58:11,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1633836736] [2023-12-02 15:58:11,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1633836736] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:58:11,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:58:11,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-12-02 15:58:11,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499132707] [2023-12-02 15:58:11,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:58:11,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-02 15:58:11,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:58:11,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-02 15:58:11,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2023-12-02 15:58:11,507 INFO L87 Difference]: Start difference. First operand 211 states and 254 transitions. Second operand has 20 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 15:58:29,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:58:29,583 INFO L93 Difference]: Finished difference Result 340 states and 377 transitions. [2023-12-02 15:58:29,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-02 15:58:29,584 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 35 [2023-12-02 15:58:29,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:58:29,585 INFO L225 Difference]: With dead ends: 340 [2023-12-02 15:58:29,585 INFO L226 Difference]: Without dead ends: 340 [2023-12-02 15:58:29,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=204, Invalid=986, Unknown=0, NotChecked=0, Total=1190 [2023-12-02 15:58:29,586 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 612 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 1816 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 1895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2023-12-02 15:58:29,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [613 Valid, 931 Invalid, 1895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1816 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2023-12-02 15:58:29,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2023-12-02 15:58:29,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 222. [2023-12-02 15:58:29,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 145 states have (on average 1.6620689655172414) internal successors, (241), 200 states have internal predecessors, (241), 11 states have call successors, (11), 9 states have call predecessors, (11), 10 states have return successors, (15), 12 states have call predecessors, (15), 11 states have call successors, (15) [2023-12-02 15:58:29,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 267 transitions. [2023-12-02 15:58:29,593 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 267 transitions. Word has length 35 [2023-12-02 15:58:29,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:58:29,593 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 267 transitions. [2023-12-02 15:58:29,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 15:58:29,593 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 267 transitions. [2023-12-02 15:58:29,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-02 15:58:29,594 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:58:29,594 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:58:29,598 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 (22)] Ended with exit code 0 [2023-12-02 15:58:29,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:58:29,794 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-12-02 15:58:29,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:58:29,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1696490125, now seen corresponding path program 1 times [2023-12-02 15:58:29,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:58:29,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1275545073] [2023-12-02 15:58:29,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:58:29,795 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 15:58:29,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:58:29,796 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:58:29,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 (23)] Waiting until timeout for monitored process [2023-12-02 15:58:30,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:58:30,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 103 conjunts are in the unsatisfiable core [2023-12-02 15:58:30,320 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:58:30,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 15:58:30,527 INFO L349 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-12-02 15:58:30,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-12-02 15:58:31,147 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2023-12-02 15:58:31,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 21 [2023-12-02 15:58:31,225 INFO L349 Elim1Store]: treesize reduction 78, result has 35.0 percent of original size [2023-12-02 15:58:31,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 67 [2023-12-02 15:58:31,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 15:58:31,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 15:58:31,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-12-02 15:58:31,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 15:58:31,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 15:58:31,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 15:58:31,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2023-12-02 15:58:31,711 INFO L349 Elim1Store]: treesize reduction 58, result has 26.6 percent of original size [2023-12-02 15:58:31,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 38 treesize of output 44 [2023-12-02 15:58:31,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-12-02 15:58:32,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 42 [2023-12-02 15:58:32,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 15:58:32,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-12-02 15:58:33,184 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-02 15:58:33,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 21 [2023-12-02 15:58:33,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 29 [2023-12-02 15:58:33,236 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-02 15:58:33,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 99 treesize of output 45 [2023-12-02 15:58:34,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 26 [2023-12-02 15:58:34,106 INFO L349 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2023-12-02 15:58:34,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 25 [2023-12-02 15:58:34,156 INFO L349 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2023-12-02 15:58:34,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 57 [2023-12-02 15:58:34,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 26 [2023-12-02 15:58:34,414 INFO L349 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2023-12-02 15:58:34,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 25 [2023-12-02 15:58:34,465 INFO L349 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2023-12-02 15:58:34,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 57 [2023-12-02 15:58:34,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 26 [2023-12-02 15:58:34,699 INFO L349 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2023-12-02 15:58:34,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 57 [2023-12-02 15:58:34,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 15:58:34,780 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-12-02 15:58:34,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 25 [2023-12-02 15:58:34,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 26 [2023-12-02 15:58:35,048 INFO L349 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2023-12-02 15:58:35,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 57 [2023-12-02 15:58:35,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 15:58:35,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 15:58:35,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2023-12-02 15:58:37,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-02 15:58:37,540 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-02 15:58:37,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 38 [2023-12-02 15:58:37,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-02 15:58:37,747 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 15:58:37,747 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:58:37,748 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:58:37,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1275545073] [2023-12-02 15:58:37,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1275545073] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:58:37,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:58:37,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-12-02 15:58:37,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889969620] [2023-12-02 15:58:37,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:58:37,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-02 15:58:37,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:58:37,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-02 15:58:37,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=496, Unknown=0, NotChecked=0, Total=552 [2023-12-02 15:58:37,750 INFO L87 Difference]: Start difference. First operand 222 states and 267 transitions. Second operand has 24 states, 20 states have (on average 1.45) internal successors, (29), 19 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 15:58:59,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:58:59,506 INFO L93 Difference]: Finished difference Result 309 states and 357 transitions. [2023-12-02 15:58:59,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-02 15:58:59,506 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 1.45) internal successors, (29), 19 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 35 [2023-12-02 15:58:59,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:58:59,508 INFO L225 Difference]: With dead ends: 309 [2023-12-02 15:58:59,508 INFO L226 Difference]: Without dead ends: 309 [2023-12-02 15:58:59,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 8 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=235, Invalid=1405, Unknown=0, NotChecked=0, Total=1640 [2023-12-02 15:58:59,509 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 425 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 2533 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 2590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2023-12-02 15:58:59,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 1094 Invalid, 2590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2533 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time] [2023-12-02 15:58:59,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2023-12-02 15:58:59,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 251. [2023-12-02 15:58:59,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 170 states have (on average 1.6176470588235294) internal successors, (275), 227 states have internal predecessors, (275), 13 states have call successors, (13), 11 states have call predecessors, (13), 12 states have return successors, (18), 12 states have call predecessors, (18), 13 states have call successors, (18) [2023-12-02 15:58:59,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 306 transitions. [2023-12-02 15:58:59,517 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 306 transitions. Word has length 35 [2023-12-02 15:58:59,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:58:59,517 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 306 transitions. [2023-12-02 15:58:59,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 1.45) internal successors, (29), 19 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 15:58:59,518 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 306 transitions. [2023-12-02 15:58:59,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-02 15:58:59,518 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:58:59,518 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:58:59,523 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 (23)] Ended with exit code 0 [2023-12-02 15:58:59,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:58:59,719 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-12-02 15:58:59,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:58:59,719 INFO L85 PathProgramCache]: Analyzing trace with hash -196390838, now seen corresponding path program 1 times [2023-12-02 15:58:59,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:58:59,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1594340730] [2023-12-02 15:58:59,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:58:59,720 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 15:58:59,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:58:59,721 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:58:59,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 (24)] Waiting until timeout for monitored process [2023-12-02 15:58:59,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:58:59,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-02 15:58:59,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:58:59,975 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 15:58:59,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 15:59:00,165 INFO L349 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2023-12-02 15:59:00,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 17 [2023-12-02 15:59:00,328 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-12-02 15:59:00,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-12-02 15:59:00,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 15:59:00,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-12-02 15:59:00,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2023-12-02 15:59:00,906 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 15:59:00,907 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:59:00,907 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:59:00,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1594340730] [2023-12-02 15:59:00,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1594340730] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:59:00,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:59:00,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-02 15:59:00,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598516219] [2023-12-02 15:59:00,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:59:00,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-02 15:59:00,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:59:00,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-02 15:59:00,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-12-02 15:59:00,909 INFO L87 Difference]: Start difference. First operand 251 states and 306 transitions. Second operand has 13 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 11 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 15:59:03,487 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 [0] [2023-12-02 15:59:05,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:59:08,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:59:10,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:59:10,090 INFO L93 Difference]: Finished difference Result 315 states and 373 transitions. [2023-12-02 15:59:10,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 15:59:10,090 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 11 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 35 [2023-12-02 15:59:10,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:59:10,092 INFO L225 Difference]: With dead ends: 315 [2023-12-02 15:59:10,092 INFO L226 Difference]: Without dead ends: 315 [2023-12-02 15:59:10,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=105, Invalid=495, Unknown=0, NotChecked=0, Total=600 [2023-12-02 15:59:10,093 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 440 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 48 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2023-12-02 15:59:10,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 441 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 800 Invalid, 3 Unknown, 0 Unchecked, 8.7s Time] [2023-12-02 15:59:10,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2023-12-02 15:59:10,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 265. [2023-12-02 15:59:10,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 182 states have (on average 1.6263736263736264) internal successors, (296), 239 states have internal predecessors, (296), 14 states have call successors, (14), 12 states have call predecessors, (14), 13 states have return successors, (20), 13 states have call predecessors, (20), 14 states have call successors, (20) [2023-12-02 15:59:10,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 330 transitions. [2023-12-02 15:59:10,102 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 330 transitions. Word has length 35 [2023-12-02 15:59:10,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:59:10,103 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 330 transitions. [2023-12-02 15:59:10,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 11 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 15:59:10,103 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 330 transitions. [2023-12-02 15:59:10,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-02 15:59:10,103 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:59:10,104 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:59:10,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 (24)] Ended with exit code 0 [2023-12-02 15:59:10,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:59:10,304 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-12-02 15:59:10,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:59:10,305 INFO L85 PathProgramCache]: Analyzing trace with hash -196390837, now seen corresponding path program 1 times [2023-12-02 15:59:10,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:59:10,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [179871146] [2023-12-02 15:59:10,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:59:10,305 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 15:59:10,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:59:10,306 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:59:10,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 (25)] Waiting until timeout for monitored process [2023-12-02 15:59:10,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:59:10,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-02 15:59:10,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:59:10,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 15:59:10,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-12-02 15:59:10,695 INFO L349 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2023-12-02 15:59:10,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-12-02 15:59:10,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 15:59:10,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-12-02 15:59:11,046 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-12-02 15:59:11,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-12-02 15:59:11,275 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 15:59:11,275 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:59:11,275 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:59:11,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [179871146] [2023-12-02 15:59:11,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [179871146] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:59:11,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:59:11,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-02 15:59:11,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661748321] [2023-12-02 15:59:11,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:59:11,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 15:59:11,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:59:11,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 15:59:11,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-02 15:59:11,277 INFO L87 Difference]: Start difference. First operand 265 states and 330 transitions. Second operand has 11 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 15:59:14,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:59:14,521 INFO L93 Difference]: Finished difference Result 296 states and 355 transitions. [2023-12-02 15:59:14,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 15:59:14,522 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 35 [2023-12-02 15:59:14,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:59:14,524 INFO L225 Difference]: With dead ends: 296 [2023-12-02 15:59:14,524 INFO L226 Difference]: Without dead ends: 296 [2023-12-02 15:59:14,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2023-12-02 15:59:14,524 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 390 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-02 15:59:14,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 303 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-02 15:59:14,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2023-12-02 15:59:14,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 263. [2023-12-02 15:59:14,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 182 states have (on average 1.6043956043956045) internal successors, (292), 237 states have internal predecessors, (292), 14 states have call successors, (14), 12 states have call predecessors, (14), 13 states have return successors, (20), 13 states have call predecessors, (20), 14 states have call successors, (20) [2023-12-02 15:59:14,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 326 transitions. [2023-12-02 15:59:14,532 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 326 transitions. Word has length 35 [2023-12-02 15:59:14,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:59:14,532 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 326 transitions. [2023-12-02 15:59:14,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 15:59:14,533 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 326 transitions. [2023-12-02 15:59:14,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-02 15:59:14,533 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:59:14,533 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:59:14,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 (25)] Forceful destruction successful, exit code 0 [2023-12-02 15:59:14,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:59:14,734 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-12-02 15:59:14,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:59:14,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1318613493, now seen corresponding path program 1 times [2023-12-02 15:59:14,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:59:14,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [365094798] [2023-12-02 15:59:14,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:59:14,735 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 15:59:14,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:59:14,736 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:59:14,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 (26)] Waiting until timeout for monitored process [2023-12-02 15:59:15,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 15:59:15,160 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 15:59:15,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 15:59:15,468 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2023-12-02 15:59:15,468 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 15:59:15,469 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 76 remaining) [2023-12-02 15:59:15,471 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 76 remaining) [2023-12-02 15:59:15,471 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 76 remaining) [2023-12-02 15:59:15,471 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 76 remaining) [2023-12-02 15:59:15,471 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 76 remaining) [2023-12-02 15:59:15,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr4ASSERT_VIOLATIONMEMORY_FREE (70 of 76 remaining) [2023-12-02 15:59:15,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr5ASSERT_VIOLATIONMEMORY_FREE (69 of 76 remaining) [2023-12-02 15:59:15,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr6ASSERT_VIOLATIONMEMORY_FREE (68 of 76 remaining) [2023-12-02 15:59:15,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 76 remaining) [2023-12-02 15:59:15,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 76 remaining) [2023-12-02 15:59:15,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 76 remaining) [2023-12-02 15:59:15,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 76 remaining) [2023-12-02 15:59:15,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 76 remaining) [2023-12-02 15:59:15,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 76 remaining) [2023-12-02 15:59:15,474 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 76 remaining) [2023-12-02 15:59:15,474 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 76 remaining) [2023-12-02 15:59:15,474 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 76 remaining) [2023-12-02 15:59:15,474 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 76 remaining) [2023-12-02 15:59:15,474 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 76 remaining) [2023-12-02 15:59:15,474 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 76 remaining) [2023-12-02 15:59:15,474 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 76 remaining) [2023-12-02 15:59:15,475 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 76 remaining) [2023-12-02 15:59:15,475 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 76 remaining) [2023-12-02 15:59:15,475 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 76 remaining) [2023-12-02 15:59:15,475 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 76 remaining) [2023-12-02 15:59:15,475 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 76 remaining) [2023-12-02 15:59:15,476 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 76 remaining) [2023-12-02 15:59:15,476 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 76 remaining) [2023-12-02 15:59:15,476 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 76 remaining) [2023-12-02 15:59:15,476 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 76 remaining) [2023-12-02 15:59:15,476 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 76 remaining) [2023-12-02 15:59:15,476 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 76 remaining) [2023-12-02 15:59:15,477 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 76 remaining) [2023-12-02 15:59:15,477 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 76 remaining) [2023-12-02 15:59:15,477 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 76 remaining) [2023-12-02 15:59:15,477 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 76 remaining) [2023-12-02 15:59:15,477 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 76 remaining) [2023-12-02 15:59:15,478 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 76 remaining) [2023-12-02 15:59:15,478 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 76 remaining) [2023-12-02 15:59:15,478 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 76 remaining) [2023-12-02 15:59:15,478 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 76 remaining) [2023-12-02 15:59:15,478 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 76 remaining) [2023-12-02 15:59:15,478 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 76 remaining) [2023-12-02 15:59:15,478 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 76 remaining) [2023-12-02 15:59:15,479 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 76 remaining) [2023-12-02 15:59:15,479 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 76 remaining) [2023-12-02 15:59:15,479 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 76 remaining) [2023-12-02 15:59:15,479 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 76 remaining) [2023-12-02 15:59:15,479 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 76 remaining) [2023-12-02 15:59:15,479 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 76 remaining) [2023-12-02 15:59:15,480 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 76 remaining) [2023-12-02 15:59:15,480 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 76 remaining) [2023-12-02 15:59:15,480 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 76 remaining) [2023-12-02 15:59:15,480 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 76 remaining) [2023-12-02 15:59:15,480 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 76 remaining) [2023-12-02 15:59:15,480 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 76 remaining) [2023-12-02 15:59:15,481 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 76 remaining) [2023-12-02 15:59:15,481 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE (18 of 76 remaining) [2023-12-02 15:59:15,481 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE (17 of 76 remaining) [2023-12-02 15:59:15,481 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE (16 of 76 remaining) [2023-12-02 15:59:15,481 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 76 remaining) [2023-12-02 15:59:15,481 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 76 remaining) [2023-12-02 15:59:15,481 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE (13 of 76 remaining) [2023-12-02 15:59:15,482 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE (12 of 76 remaining) [2023-12-02 15:59:15,482 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE (11 of 76 remaining) [2023-12-02 15:59:15,482 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE (10 of 76 remaining) [2023-12-02 15:59:15,482 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE (9 of 76 remaining) [2023-12-02 15:59:15,482 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE (8 of 76 remaining) [2023-12-02 15:59:15,482 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 76 remaining) [2023-12-02 15:59:15,482 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 76 remaining) [2023-12-02 15:59:15,483 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 76 remaining) [2023-12-02 15:59:15,483 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 76 remaining) [2023-12-02 15:59:15,483 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE (3 of 76 remaining) [2023-12-02 15:59:15,483 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE (2 of 76 remaining) [2023-12-02 15:59:15,483 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_FREE (1 of 76 remaining) [2023-12-02 15:59:15,483 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_LEAK (0 of 76 remaining) [2023-12-02 15:59:15,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 (26)] Ended with exit code 0 [2023-12-02 15:59:15,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/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 15:59:15,686 INFO L445 BasicCegarLoop]: Path program 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 15:59:15,690 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 15:59:15,718 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~ret66 [2023-12-02 15:59:15,720 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~ret59 [2023-12-02 15:59:15,721 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem50 [2023-12-02 15:59:15,730 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 03:59:15 BoogieIcfgContainer [2023-12-02 15:59:15,730 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 15:59:15,730 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 15:59:15,730 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 15:59:15,730 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 15:59:15,731 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:57:09" (3/4) ... [2023-12-02 15:59:15,731 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-12-02 15:59:15,744 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~ret66 [2023-12-02 15:59:15,745 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~ret59 [2023-12-02 15:59:15,746 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem50 [2023-12-02 15:59:15,779 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 15:59:15,780 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 15:59:15,780 INFO L158 Benchmark]: Toolchain (without parser) took 128263.50ms. Allocated memory was 96.5MB in the beginning and 172.0MB in the end (delta: 75.5MB). Free memory was 71.3MB in the beginning and 109.3MB in the end (delta: -38.0MB). Peak memory consumption was 38.9MB. Max. memory is 16.1GB. [2023-12-02 15:59:15,781 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 67.1MB. Free memory was 43.3MB in the beginning and 43.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:59:15,781 INFO L158 Benchmark]: CACSL2BoogieTranslator took 612.59ms. Allocated memory is still 96.5MB. Free memory was 71.0MB in the beginning and 70.4MB in the end (delta: 602.2kB). Peak memory consumption was 35.8MB. Max. memory is 16.1GB. [2023-12-02 15:59:15,782 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.69ms. Allocated memory is still 96.5MB. Free memory was 70.4MB in the beginning and 67.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 15:59:15,782 INFO L158 Benchmark]: Boogie Preprocessor took 45.09ms. Allocated memory is still 96.5MB. Free memory was 67.3MB in the beginning and 64.1MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 15:59:15,782 INFO L158 Benchmark]: RCFGBuilder took 1020.32ms. Allocated memory is still 96.5MB. Free memory was 64.1MB in the beginning and 48.4MB in the end (delta: 15.7MB). Peak memory consumption was 39.2MB. Max. memory is 16.1GB. [2023-12-02 15:59:15,783 INFO L158 Benchmark]: TraceAbstraction took 126451.66ms. Allocated memory was 96.5MB in the beginning and 172.0MB in the end (delta: 75.5MB). Free memory was 47.8MB in the beginning and 113.5MB in the end (delta: -65.7MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. [2023-12-02 15:59:15,783 INFO L158 Benchmark]: Witness Printer took 49.70ms. Allocated memory is still 172.0MB. Free memory was 113.5MB in the beginning and 109.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 15:59:15,785 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 67.1MB. Free memory was 43.3MB in the beginning and 43.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 612.59ms. Allocated memory is still 96.5MB. Free memory was 71.0MB in the beginning and 70.4MB in the end (delta: 602.2kB). Peak memory consumption was 35.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 77.69ms. Allocated memory is still 96.5MB. Free memory was 70.4MB in the beginning and 67.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.09ms. Allocated memory is still 96.5MB. Free memory was 67.3MB in the beginning and 64.1MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1020.32ms. Allocated memory is still 96.5MB. Free memory was 64.1MB in the beginning and 48.4MB in the end (delta: 15.7MB). Peak memory consumption was 39.2MB. Max. memory is 16.1GB. * TraceAbstraction took 126451.66ms. Allocated memory was 96.5MB in the beginning and 172.0MB in the end (delta: 75.5MB). Free memory was 47.8MB in the beginning and 113.5MB in the end (delta: -65.7MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. * Witness Printer took 49.70ms. Allocated memory is still 172.0MB. Free memory was 113.5MB in the beginning and 109.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~ret66 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~ret59 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem50 - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~ret66 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~ret59 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem50 - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L855] struct hid_device dev; [L863] CALL entry_point() [L857] CALL probe_23(&dev) [L838] int ret = - -3; VAL [dev={2:0}, dev={2:0}, dev={2:0}, ldv_global_msg_list={1:0}, ret=3] [L839] CALL, EXPR ldv_malloc(sizeof(struct hid_report_enum)) VAL [\old(size)=1036, dev={2:0}, ldv_global_msg_list={1:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L839] RET, EXPR ldv_malloc(sizeof(struct hid_report_enum)) VAL [dev={2:0}, dev={2:0}, dev={2:0}, ldv_global_msg_list={1:0}, ret=3] [L839] struct hid_report_enum *p = (struct hid_report_enum *)ldv_malloc(sizeof(struct hid_report_enum)); [L840] COND FALSE !(p==0) VAL [dev={2:0}, dev={2:0}, dev={2:0}, ldv_global_msg_list={1:0}, p={3:0}, ret=3] [L842] CALL LDV_INIT_LIST_HEAD(&p->report_list) VAL [dev={2:0}, ldv_global_msg_list={1:0}, list={3:4}] [L540] list->next = list VAL [dev={2:0}, ldv_global_msg_list={1:0}, list={3:4}, list={3:4}] [L541] list->prev = list [L842] RET LDV_INIT_LIST_HEAD(&p->report_list) VAL [dev={2:0}, dev={2:0}, dev={2:0}, ldv_global_msg_list={1:0}, p={3:0}, ret=3] [L843] dev->report_enum = p [L844] CALL hid_open_report(dev) [L812] struct hid_parser *parser; [L813] struct hid_item item; VAL [dev={2:0}, device={2:0}, device={2:0}, item={11:0}, ldv_global_msg_list={1:0}] [L814] CALL, EXPR ldv_zalloc(sizeof(struct hid_parser)) VAL [dev={2:0}, ldv_global_msg_list={1:0}] [L533] EXPR, FCALL calloc(size, 1) [L533] return calloc(size, 1); [L814] RET, EXPR ldv_zalloc(sizeof(struct hid_parser)) VAL [dev={2:0}, device={2:0}, device={2:0}, item={11:0}, ldv_global_msg_list={1:0}] [L814] parser = ldv_zalloc(sizeof(struct hid_parser)) [L815] COND FALSE !(!parser) VAL [dev={2:0}, device={2:0}, device={2:0}, item={11:0}, ldv_global_msg_list={1:0}, parser={6:0}] [L818] parser->device = device [L819] CALL, EXPR ldv_positive() [L519] int r = __VERIFIER_nondet_int(); [L520] COND TRUE r>0 [L520] return r; VAL [\result=536870914, dev={2:0}, ldv_global_msg_list={1:0}, r=536870914] [L819] RET, EXPR ldv_positive() [L819] parser->report_id = ldv_positive() [L820] CALL, EXPR fetch_item(&item) [L778] COND FALSE !(__VERIFIER_nondet_int()) [L781] item->type = 0 [L782] item->a = __VERIFIER_nondet_int() [L783] item->b = __VERIFIER_nondet_int() [L784] item->c = __VERIFIER_nondet_int() [L785] return 0; VAL [\result=0, dev={2:0}, item={11:0}, item={11:0}, ldv_global_msg_list={1:0}] [L820] RET, EXPR fetch_item(&item) [L820] COND TRUE fetch_item(&item)!=-1 [L821] CALL hid_parser_main(parser, &item) [L800] EXPR parser->device VAL [dev={2:0}, item={11:0}, item={11:0}, ldv_global_msg_list={1:0}, parser={6:0}, parser={6:0}] [L800] EXPR parser->report_id [L800] CALL hid_register_report(parser->device, parser->report_id) [L788] EXPR device->report_enum [L788] struct hid_report_enum *report_enum = device->report_enum; [L789] struct hid_report *report; VAL [\old(id)=536870914, dev={2:0}, device={2:0}, device={2:0}, id=536870914, ldv_global_msg_list={1:0}, report_enum={3:0}] [L790] report_enum->report_id_hash[id] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 808]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 808]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 808]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 826]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 826]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 826]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 830]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 830]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 830]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 849]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 849]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 849]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 835]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 835]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 835]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 862]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 171 locations, 76 error locations. Started 1 CEGAR loops. OverallTime: 126.4s, OverallIterations: 25, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 93.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 mSolverCounterUnknown, 4355 SdHoareTripleChecker+Valid, 67.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4318 mSDsluCounter, 11967 SdHoareTripleChecker+Invalid, 64.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 434 IncrementalHoareTripleChecker+Unchecked, 9287 mSDsCounter, 476 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13574 IncrementalHoareTripleChecker+Invalid, 14494 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 476 mSolverCounterUnsat, 2680 mSDtfsCounter, 13574 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 639 GetRequests, 382 SyntacticMatches, 7 SemanticMatches, 250 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 720 ImplicationChecksByTransitivity, 35.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=265occurred in iteration=23, InterpolantAutomatonStates: 224, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 24 MinimizatonAttempts, 636 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 23.0s InterpolantComputationTime, 606 NumberOfCodeBlocks, 606 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 547 ConstructedInterpolants, 170 QuantifiedInterpolants, 11368 SizeOfPredicates, 187 NumberOfNonLiveVariables, 3995 ConjunctsInSsa, 509 ConjunctsInUnsatCore, 24 InterpolantComputations, 24 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-12-02 15:59:15,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f4ee8e-ae4f-4a72-8924-4d901e653860/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)